A flexible container and methods of using the same

Abstract

This invention discloses a flexible container and its usage method, comprising a container body with piping fittings, a support assembly, and paddle blades; the support assembly includes a lifting plate, a base, and connecting supports; the lifting plate is fixed to the top of the container body, and the base is fixed to the bottom of the container body; the connecting supports are disposed inside the container body, with one end connected to the lifting plate and the other end inserted into or detached from the base; wherein, the connecting supports can rotate relative to the lifting plate and the base about the axis of the container body, and can also fold and extend along the axis of the container body; paddle blades are disposed on the connecting supports. Through the above-mentioned design, this invention can avoid the risk of the flexible container's membrane material being torn, scratched, or damaged by collision during transportation, installation, and transfer lifting, improving the container's structural stability and load-bearing capacity, and ensuring the integrity of the sterile environment inside the container.

Description

Technical Field

[0001] This invention relates to the field of biopharmaceuticals, and in particular to a flexible container and its method of use. Background Technology

[0002] In biopharmaceuticals, cell culture, and other fields, flexible containers (such as disposable bioreactor bags) serve as core storage and reaction devices, widely used in the production processes of vaccines, proteins, and macromolecular drugs. Their core requirements are aseptic sealing, convenient transport, and stable use of materials. Currently, flexible containers face numerous unresolved issues in practical applications, which are closely related to the inherent material properties of the containers and their insufficient adaptability to various usage scenarios.

[0003] Firstly, the main body of flexible containers is mostly made of flexible membrane materials. These materials are inherently weak in rigidity and have limited load-bearing capacity. During transportation and installation, the accompanying pipes and related accessories will naturally sag due to their own weight, continuously exerting tensile forces on the connection between the membrane material and the pipe joints. Simultaneously, flexible membrane materials have poor tear and tensile resistance and cannot withstand the heavy loads of the accessories for extended periods, leading to tears or damage at container joints or the membrane material. Once damaged, this directly compromises the integrity of the container and its internal sterile environment, rendering the entire container unusable. If the damage is not detected initially, the pressure of the liquid and gas inside the container will gradually cause the damaged areas to rupture during later use, resulting in product leakage, contamination, and ultimately significant economic losses.

[0004] Furthermore, during the transfer and hoisting of flexible containers, due to their lack of sufficient structural stability, uneven stress is prone to occur, which can lead to container overturning and deformation, further increasing the risk of membrane material damage.

[0005] Furthermore, in folded transportation scenarios, flexible containers are prone to excessive compression due to the lack of effective constraints, causing internal components to shake and collide with the membrane material, resulting in additional damage to the membrane material.

[0006] Therefore, a flexible container and its usage method are needed to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a flexible container and its usage method to avoid the risk of the flexible container's membrane being torn, scratched, or damaged by collision during transportation, installation, and transfer hoisting, thereby improving the container's structural stability and load-bearing capacity and ensuring the integrity of the sterile environment inside the container.

[0008] To solve the above-mentioned technical problems, the present invention provides a flexible container, including a container body with piping fittings, a support assembly, and blades. The support assembly includes a lifting platform, a chassis, and connecting support components; The lifting platform is fixed to the top of the container body, and the base is fixed to the bottom of the container body; The connecting support is disposed inside the container body, and one end of the connecting support is connected to the lifting plate, while the other end is inserted into or separated from the chassis. The connecting support can rotate relative to the lifting plate and the chassis around the axis of the container body, and can also fold and extend along the axis of the container body. The blades are mounted on the connecting support.

[0009] Furthermore, an isolation sleeve is provided on the top of the container body; The isolation sleeve includes a fixed part and a rotating part, and the rotating part can rotate relative to the fixed part in a sealed manner. The lifting platform is fixedly connected to the fixing part; The connecting support is connected to the rotating part.

[0010] Furthermore, the connecting support includes a flexible hose, a retaining ring, a transmission tube, a retaining sleeve, a positioning head, and a hinged connecting rod; One end of the hose is fixedly connected to the rotating part via the retaining ring; One end of the transmission tube is fixedly connected to the flexible hose through the fixing sleeve, and the other end is inserted into the chassis through the positioning head; The chassis has a limiting hole in the middle that matches the positioning head; One end of the hinged connecting rod is rotatably connected to the outer wall of the fixed ring, and the other end is rotatably connected to the fixed sleeve.

[0011] Furthermore, the container body has a folded transport state and a working state; When the container body is in the folded transport state, the hinged connecting rod folds and retracts along the axis of the container body, and the positioning head is inserted into the limiting hole; When the container body is in working condition, the hinged connecting rod extends and straightens along the axis of the container body to vertically wrap the hose, and the positioning head separates from the limiting hole.

[0012] Furthermore, at least two sets of the hinged connecting rods are provided, and multiple sets of the hinged connecting rods are arranged in a ring at equal intervals with the axis of the transmission tube as the axis. When the lifting platform moves relative to the chassis, multiple sets of hinged connecting rods deflect synchronously.

[0013] Furthermore, the blades are disposed on the outer wall of the fixed sleeve, and the blades are staggered with the multiple sets of the hinged connecting rods.

[0014] Furthermore, the bottom of the chassis is provided with a flange, which is sealed and welded to the bottom of the container body.

[0015] Furthermore, lifting lugs are welded onto the main body of the container; The lifting lugs are provided at the top and bottom edges of the container body, and the lifting lugs are detachably connected to the lifting plate by a lifting strap; The piping fittings are also detachably connected to the lifting platform via the slings.

[0016] Furthermore, both the lifting platform and the chassis are rigid structures, and the lifting platform is provided with fixing holes or bosses for limiting and fixing the slings or docking with external lifting equipment.

[0017] On the other hand, the present invention also proposes a method for using a flexible container, which is implemented using the flexible container described in the above embodiments, and specifically includes the following steps: Transportation phase: Fold and retract the connecting support along the axis of the container body, and insert and position the end of the connecting support away from the lifting plate into the chassis. The lifting platform and the chassis are fixed by the transport frame, so that the lifting platform, connecting support and chassis together form a fixed support frame, which provides radial constraint on the membrane material of the container body and prevents the membrane material from collapsing. At the same time, the pipe fittings are fixed to the lifting platform, so that the weight of the pipe fittings is borne by the lifting platform, thus completing the transport packaging; Work phase: The flexible container is lifted as a whole by connecting it with an external hoisting equipment and a hoisting platform, so that the connecting support components extend and straighten along the axis of the container body until they separate from the base. A shaft is provided, and the lower end of the shaft is inserted into the transmission tube of the connecting support, while the upper end of the shaft is connected to the transmission assembly outside the container. The transmission assembly applies a rotational driving force to the connecting support through the insert shaft, causing the connecting support to rotate relative to the lifting plate and the chassis around the axis of the container body, thereby driving the paddle blades to rotate synchronously and completing the stirring operation.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects: By setting up a container body with piping fittings, a support assembly including a lifting platform, a chassis, and connecting support components, as well as paddle blades, the lifting platform and chassis form a rigid upper and lower support for the container body, effectively distributing the weight of the container and piping fittings, and preventing the weight of the piping fittings from directly pulling on the membrane material and the connection between the pipe joints, thus reducing the possibility of membrane material tearing or being damaged at the source.

[0019] Meanwhile, by allowing the connecting support to rotate relative to the lifting platform and chassis around the container's axis and to fold and extend along that axis, and by allowing the paddle blades to rotate synchronously with the connecting support, the foldable and extendable nature of the connecting support enables radial constraint during folded transport, preventing excessive compression of the container and resulting in internal components shaking and colliding with the membrane material. Furthermore, during transport and lifting, the flexible container's structural stability can be enhanced by the support components, avoiding overturning and deformation caused by uneven stress, further reducing the risk of membrane material damage, ensuring the integrity of the sterile environment inside the container, preventing material leakage and contamination, reducing economic losses, and adapting to folded transport requirements, ensuring stable operation of the container in various usage scenarios. This achieves the goal of meeting the high-precision and high-reliability requirements of flexible containers in the biopharmaceutical field. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a flexible container in one embodiment of the present invention; Figure 2 This is a half-sectional view of a flexible container according to an embodiment of the present invention; Figure 3 This is a partial cross-sectional view of the isolation sleeve in a flexible container according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the connecting support member in the flexible container in a folded state according to an embodiment of the present invention; Figure 5 This is a cross-sectional view of the flexible container in operation in one embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the flexible container in a folded transportation state according to one embodiment of the present invention; Figure 7 This is a partial structural diagram of the chassis when the flexible container is in a folded transportation state according to one embodiment of the present invention.

[0021] Icon labels: 1. Container body; 11. Piping fittings; 12. Lifting lugs; 2. Lifting platform; 3. Chassis; 31. Limiting hole; 32. Drainage port; 4. Connecting support component; 41. Flexible hose; 42. Retaining ring; 43. Transmission tube; 44. Fixing sleeve; 45. Positioning head; 46. Hinge connecting rod; 5. Paddle blades; 6. Isolation sleeve; 61. Fixing part; 62. Rotating part; 7. Suspenders; 8. Transport frame; 81. Transport pallet. Detailed Implementation

[0022] The flexible container and its usage method of the present invention will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the invention.

[0023] Furthermore, based on the teachings of this specification, those skilled in the art can form new technical solutions through cross-combination of different implementation methods without creating technical contradictions. Such variations should all be considered to fall within the protection scope of this patent.

[0024] The invention is described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0025] Example 1 like Figures 1 to 3 As shown, an embodiment of the present invention proposes a flexible container, including a container body 1 with piping fittings 11, a support assembly, and blades 5.

[0026] The support assembly includes a lifting platform 2, a chassis 3, and a connecting support 4.

[0027] The lifting platform 2 is fixed to the top of the container body 1, and the base plate 3 is fixed to the bottom of the container body 1, forming rigid supports at the top and bottom of the container body 1 respectively.

[0028] In this embodiment, a lifting lug 12 is welded onto the container body 1.

[0029] The lifting lugs 12 are located at the top and bottom edges of the container body 1, and the lifting lugs 12 are detachably connected to the lifting plate 2 via the lifting straps 7.

[0030] The pipeline fitting 11 is also detachably connected to the lifting plate 2 via the sling 7.

[0031] In addition, both the lifting platform 2 and the chassis 3 are designed as rigid structures.

[0032] Specifically, the lifting plate 2 is sealed and fixed to the top of the container body 1 by welding or snap-fitting, forming a rigid disc structure. The lifting plate 2 is provided with fixing holes or protrusions for limiting and fixing the lifting strap 7 or docking with external lifting equipment. That is, multiple fixing holes or protrusions are evenly opened on the edge of the lifting plate 2, which are used to dock with external lifting equipment and to fix the lifting strap 7 and pipeline fittings 11, thus concentrating the weight of the pipeline and fittings and avoiding direct stress on the membrane material.

[0033] The chassis 3 is also a rigid structure. It is sealed and welded to the bottom of the container body 1 through the bottom flange. A limiting hole 31 is opened in the middle for positioning and matching with the connecting support 4, so as to provide stable support for the bottom of the flexible container and prevent deformation during operation.

[0034] The connecting support 4 is disposed inside the container body 1 and has an overall telescopic and rotatable rod-shaped structure. One end of the connecting support 4 is connected to the lifting plate 2, and the other end is inserted into or separated from the base plate 3. That is, the upper end of the connecting support 4 is sealed to the lifting plate 2, and the lower end can be inserted into or separated from the limiting hole 31 of the base plate 3. This allows the connecting support 4 to rotate relative to the lifting plate 2 and the base plate 3 around the axis of the container body 1, and it can also fold and extend along the axis of the container body 1.

[0035] It should be noted that the blades 5 are mounted on the connecting support 4.

[0036] Because the connecting support 4 can rotate 360° around the axis of the container body 1 to drive the paddle blades 5 to complete the material mixing, and can also fold and extend along the axis, the foldable and extendable characteristics of the connecting support 4 can form radial constraints when the container is folded for transportation, preventing the container from being over-compressed and causing the internal components to shake and collide with the membrane material. This effectively reduces the risk of membrane material wear and tear during the transportation of flexible containers without affecting normal use. Therefore, the container body 1 can operate stably in different usage scenarios, thereby meeting the high precision and high reliability requirements of flexible containers in the biopharmaceutical field.

[0037] like Figure 3 As shown, in a further embodiment, the top of the container body 1 is provided with an isolation sleeve 6, which is used to seal the connection between the lifting plate 2 and the container body 1, and to provide a rotatable fulcrum for the connecting support member 4.

[0038] Specifically, the isolation sleeve 6 includes a fixed part 61 and a rotating part 62, and the rotating part 62 can rotate relative to the fixed part 61 in a sealed manner.

[0039] The hoisting plate 2 is fixedly connected to the fixing part 61, and the connecting support 4 is connected to the rotating part 62.

[0040] By setting the isolation sleeve 6 as a split-type sealing and rotating structure, the sealing performance is maintained while the rotation action is realized. This satisfies the motion requirements of the rotating and stirring of the connecting support 4, and eliminates the problems of material leakage and ash ingress caused by the rotation gap, thus balancing sealing performance and motion flexibility.

[0041] like Figure 4 and Figure 5 As shown, in other embodiments, a specific connecting support 4 is also proposed to adapt to the rotating part 62 of the isolation sleeve 6 to achieve synchronous linkage of axial extension and circumferential rotation. This is used to provide radial support constraint for the container in the folded storage state, to prevent the membrane material from being squeezed and damaged, and can also rotate 360° synchronously with the rotating part 62 to stably drive the paddle blades 5 to complete the mixing of materials throughout the entire area.

[0042] Specifically, the connecting support 4 includes a flexible hose 41, a fixing ring 42, a transmission pipe 43, a fixing sleeve 44, a positioning head 45, and a hinged connecting rod 46.

[0043] One end of the hose 41 is detachably and fixedly connected to the rotating part 62 through the fixing ring 42. That is, the fixing ring 42 is used to reliably fix the hose 41 and the rotating part 62. The detachable structure facilitates disassembly, assembly and maintenance. Since the hose 41 itself has flexible and extensible characteristics, it can follow the hinged connecting rod 46 to achieve axial folding and expansion, while simultaneously bearing the rotational power of the rotating part 62.

[0044] One end of the transmission tube 43 is detachably and fixedly connected to the hose 41 via the fixing sleeve 44, and the other end is inserted into the chassis 3 via the positioning head 45.

[0045] The transmission tube 43 is used to receive the rotational torque transmitted by the hose 41, drive the blade 5 to rotate synchronously, complete the material mixing, and through the insertion of the positioning head 45 into the chassis 3, a stable support frame structure is formed between the chassis 3, the connecting support 4 and the lifting plate 2, so as to form radial constraint on the flexible container, thereby effectively preventing the blade 5 from scratching the container membrane.

[0046] One end of the hinged connecting rod 46 is rotatably connected to the outer wall of the fixed ring 42, and the other end is rotatably connected to the fixed sleeve 44. The relative displacement between the fixed ring 42 and the fixed sleeve 44 is realized through the rotatable hinge at both ends, driving the hose 41 and the transmission tube 43 to complete axial telescopic folding. At the same time, the hinged connecting rod 46 is also used to bear radial force, providing rigid radial constraint when the container is folded to prevent the membrane material from being squeezed and deformed.

[0047] It should be noted that the container body 1 has a folded transport state and a working state.

[0048] like Figure 2 and Figure 4 As shown, when the container body 1 is in the folded transport state, the hinged connecting rod 46 folds and retracts along the axis of the container body 1, and the positioning head 45 is inserted into the limiting hole 31.

[0049] like Figure 5 As shown, when the container body 1 is in the working state, the hinged connecting rod 46 extends and straightens along the axis of the container body 1 to vertically wrap the hose 41, and the positioning head 45 separates from the limiting hole 31.

[0050] By folding and unfolding the hinged link 46 in two states, the overall axial length of the connecting support 4 can be switched and adjusted. Specifically, during folded transport, the positioning head 45 and the limiting hole 31 are inserted and sealed to limit and fix the chassis 3, and also to radially constrain the membrane material, effectively preventing internal components (i.e., the propeller blades 5) from shaking and colliding with the membrane material. In the working state, after the hinged link 46 is unfolded, it forms external protection and rigid support for the hose 41 (e.g., ...). Figure 5 As shown), to improve the stability of torque transmission, the positioning head 45 is unblocked after separating from the limiting hole 31, ensuring smooth material discharge. At the same time, it can rotate synchronously with the transmission tube 43, stably driving the paddle blades 5 to achieve full-area mixing operation, taking into account both transportation protection and usage functionality.

[0051] In a further embodiment, at least two sets of the hinged connecting rods 46 are provided, and multiple sets of the hinged connecting rods 46 are arranged in a ring at equal intervals with the axis of the transmission tube 43 as the axis.

[0052] Furthermore, when the lifting platform 2 moves relative to the chassis 3, multiple sets of hinged connecting rods 46 deflect synchronously.

[0053] It should be noted that the blade 5 is disposed on the outer wall of the fixed sleeve 44, and the blade 5 and the multiple sets of hinged connecting rods 46 are staggered to prevent interference between the blade 5 and the hinged connecting rods 46.

[0054] Example 2 like Figure 6 and Figure 7 As shown, this embodiment also proposes a method for using a flexible container, which is implemented using the flexible container described in Embodiment 1, and specifically includes the following steps: Transportation phase: The connecting support 4 is folded and retracted along the axis of the container body 1, and the end of the connecting support 4 away from the lifting plate 2 is inserted and positioned with the chassis 3. This switches the connecting support 4 from the working state to the folded state, reducing the overall space occupied and facilitating transportation. Furthermore, by inserting and positioning it with the chassis 3, the relative position of the connecting support 4 and the chassis 3 is initially fixed, laying the groundwork for the subsequent formation of a fixed support frame. At the same time, it prevents the connecting support 4 from separating from the chassis 3 and from shaking during transportation.

[0055] The lifting platform 2 and the base 3 are fixed by the transport frame 8, so that the lifting platform 2, the connecting support 4 and the base 3 together form a fixed support frame, which provides radial constraint on the membrane material of the container body 1 and prevents the membrane material from collapsing. That is, through the fixing effect of the transport frame 8, the lifting platform 2, the connecting support 4 and the base 3 are connected into an integral rigid fixed support frame, avoiding relative displacement of the three during transportation. Moreover, the fixed support frame provides uniform radial support to the flexible membrane material, effectively preventing the membrane material from collapsing or wrinkling due to its own flexibility and transportation bumps, protecting the structural integrity of the membrane material, and avoiding damage to the membrane material that would affect subsequent use.

[0056] Specifically, both the lifting tray 2 and the base 3 are secured to the transport frame 8 with cable ties. The base 3 has a drain port 32 at its bottom, extending beyond the container body 1, for connecting to a drain pipe. The transport frame 8 has a transport tray 81 at its bottom, with a slit to allow the drain pipe to pass through; the drain port 32, connected to the base 3, is fitted into this slit.

[0057] Next, the pipe fittings 11 are fixed to the lifting platform 2, so that the weight of the pipe fittings 11 is borne by the lifting platform 2, thus completing the transport packaging. This effectively prevents the pipe fittings 11 from shaking or falling off during transportation, and prevents the fittings from colliding with the membrane material or being damaged. Furthermore, by having the weight of the pipe fittings 11 borne by the lifting platform 2, the weight of the pipe fittings 11 is prevented from being applied to the membrane material, reducing the additional load on the membrane material and ensuring the stability of the overall structure during transportation. Finally, all preparations before transportation are completed, ensuring that the flexible container can be safely transported.

[0058] Work phase: The flexible container is lifted as a whole by connecting it to the lifting platform 2 with external hoisting equipment, so that the connecting support 4 unfolds and straightens along the axis of the container body 1 until it separates from the base 3. The container is lifted by hoisting equipment, and the connecting support 4, which is folded and retracted, naturally unfolds and straightens by gravity, without the need for manual unfolding, which improves the convenience of operation. After the connecting support 4 is unfolded, it separates from the base 3, which removes the fixed constraints during the transportation stage and ensures that the base 3 will not rotate the connecting support 4 to drive the paddle blades 5 to stir and cause interference.

[0059] A shaft is provided, and the lower end of the shaft is inserted into the transmission tube 43 of the connecting support 4, while the upper end of the shaft is connected to the transmission assembly outside the container. The transmission assembly applies a rotational driving force to the connecting support 4 via the insert shaft, causing the connecting support 4 to rotate relative to the lifting plate 2 and the chassis 3 around the axis of the container body 1, thereby driving the paddle blades 5 to rotate synchronously and complete the stirring operation. The insert shaft, as the main shaft for transmitting power, is therefore a rigid shaft.

[0060] By applying a driving force, the connecting support 4 is made to rotate stably around the axis of the container body 1. Since the blade 5 is fixed on the connecting support 4, it can drive the blade 5 to rotate synchronously, thereby realizing the full-area stirring of the material in the container body 1 and ensuring that the material is mixed evenly.

[0061] Through the above steps, the flexible container can be efficiently and smoothly switched between its transportation and working states, taking into account both transportation convenience and work practicality. This effectively solves the problems of easy membrane collapse, easy damage to accessories, and poor overall stability during the transportation of traditional flexible containers. At the same time, it simplifies the operation process during the working stage and improves the efficiency and uniformity of the mixing operation.

[0062] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A flexible container, characterized in that, It includes a container body (1) with piping fittings (11), a support assembly, and blades (5). The support assembly includes a lifting platform (2), a chassis (3), and connecting support components (4); The lifting platform (2) is fixed to the top of the container body (1), and the base plate (3) is fixed to the bottom of the container body (1); The connecting support (4) is disposed inside the container body (1), and one end of the connecting support (4) is connected to the lifting plate (2), and the other end is inserted into or separated from the chassis (3); The connecting support (4) is able to rotate relative to the lifting plate (2) and the chassis (3) around the axis of the container body (1), and is also able to fold and extend along the axis of the container body (1). The blades (5) are mounted on the connecting support (4).

2. The flexible container as described in claim 1, characterized in that, An isolation sleeve (6) is provided on the top of the container body (1); The isolation sleeve (6) includes a fixed part (61) and a rotating part (62), and the rotating part (62) can rotate relative to the fixed part (61) in a sealed manner. The lifting plate (2) is fixedly connected to the fixing part (61); The connecting support (4) is connected to the rotating part (62).

3. The flexible container as described in claim 2, characterized in that, The connecting support (4) includes a hose (41), a fixing ring (42), a transmission tube (43), a fixing sleeve (44), a positioning head (45), and a hinged connecting rod (46). One end of the hose (41) is fixedly connected to the rotating part (62) through the fixing ring (42); One end of the transmission tube (43) is fixedly connected to the hose (41) through the fixing sleeve (44), and the other end is inserted into the chassis (3) through the positioning head (45); The chassis (3) is provided with a limiting hole (31) that matches the positioning head (45) in the middle. One end of the hinged connecting rod (46) is rotatably connected to the outer wall of the fixed ring (42), and the other end is rotatably connected to the fixed sleeve (44).

4. The flexible container as described in claim 3, characterized in that, The container body (1) has a folded transport state and a working state; When the container body (1) is in the folded transport state, the hinge link (46) folds and retracts along the axis of the container body (1), and the positioning head (45) is inserted into the limiting hole (31); When the container body (1) is in working condition, the hinged connecting rod (46) extends and straightens along the axis of the container body (1) to surround the hose (41) vertically, and the positioning head (45) separates from the limiting hole (31).

5. The flexible container as described in claim 3, characterized in that, At least two sets of the hinged connecting rods (46) are provided, and multiple sets of the hinged connecting rods (46) are arranged in a ring at equal intervals with the axis of the transmission tube (43) as the axis. When the lifting platform (2) moves relative to the chassis (3), multiple sets of the hinged connecting rods (46) deflect synchronously.

6. The flexible container as described in claim 5, characterized in that, The blades (5) are disposed on the outer wall of the fixed sleeve (44), and the blades (5) are misaligned with the multiple sets of the hinged connecting rods (46).

7. The flexible container as described in claim 1, characterized in that, The bottom of the chassis (3) is provided with a flange, which is sealed and welded to the bottom of the container body (1).

8. The flexible container as described in claim 1, characterized in that, The container body (1) is welded with lifting lugs (12); The lifting lugs (12) are provided on the top and bottom edges of the container body (1), and the lifting lugs (12) are detachably connected to the lifting plate (2) by the lifting straps (7); The pipe fitting (11) is also detachably connected to the lifting plate (2) via the sling (7).

9. The flexible container as described in claim 8, characterized in that, Both the lifting plate (2) and the chassis (3) are rigid structures, and the lifting plate (2) is provided with fixing holes or bosses for limiting and fixing the sling (7) or connecting with external lifting equipment.

10. A method of using a flexible container, characterized in that, The method employs a flexible container as described in any one of claims 1-9, specifically comprising the following steps: Transportation phase: Fold and retract the connecting support (4) along the axis of the container body (1), and insert the end of the connecting support (4) away from the lifting plate (2) into the chassis (3) for positioning; The lifting platform (2) and the chassis (3) are fixed by the transport frame (8) respectively, so that the lifting platform (2), the connecting support (4) and the chassis (3) together form a fixed support frame to form radial constraint on the membrane material of the container body (1) and prevent the membrane material from collapsing. At the same time, the pipe fittings (11) are fixed to the lifting plate (2), so that the weight of the pipe fittings (11) is borne by the lifting plate (2), and the transportation packaging is completed; Work phase: The flexible container is lifted as a whole by connecting with the lifting platform (2) through external lifting equipment, so that the connecting support (4) extends and straightens along the axis of the container body (1) until it is separated from the chassis (3); A shaft is provided, and the lower end of the shaft is inserted into the transmission tube (43) of the connecting support (4), and the upper end of the shaft is connected to the transmission assembly outside the container. The transmission assembly applies a rotational driving force to the connecting support (4) through the insert shaft, causing the connecting support (4) to rotate relative to the lifting plate (2) and the chassis (3) around the axis of the container body (1), thereby driving the paddle blades (5) to rotate synchronously and complete the stirring operation.

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