A fluid system

Abstract

The present invention belongs to the technical field of fluid systems and discloses a fluid system. The fluid system also includes a fluid container, a waste container, a flow pool module, a conversion module and a drive module. The drive module is connected to the conversion module through a first power pipeline or a second power pipeline, and provides a driving force for the flow of the fluid. When the conversion module is in a first state, the fluid stored in the fluid container can be driven by the drive module to push the original fluid in the path into the first power pipeline for temporary storage; when the conversion module is in a second state, the second power pipeline is connected to the flow pool outlet through the conversion module, and the flow pool inlet is connected to the fluid container through the conversion module; the fluid stored in the fluid container can enter the flow pool module under the drive of the drive module, and push the original fluid in the flow pool module into the second power pipeline for temporary storage. This fluid system can improve the utilization rate of the fluid and, at the same time, improve the fluid transportation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid systems, and in particular to a fluid system. Background Art

[0002] The process of transporting reagents or samples through a fluidic system into a flow cell is essentially the process of replacing the fluid previously filling the fluidic system with new fluid. During this process, the new fluid typically consumes a significant volume along its path before entering the flow cell.

[0003] Due to poor piping design in existing fluid systems, the volume of new fluid participating in biological or chemical reactions in the flow cell is far smaller than the volume transported along the path, resulting in low fluid utilization. This additional consumption is typically due to two reasons: first, the original fluid that previously filled the fluid system leaves residue on the walls; second, the presence of dead volume in the fluid system that cannot be directly flushed. Both of these factors necessitate the use of a large volume of new fluid to flush the residue from the walls, and to replace the unflushed fluid within the dead volume through molecular diffusion dilution.

[0004] Therefore, it is urgent to propose a fluid system to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a fluid system, which can improve the utilization rate of the fluid and at the same time improve the fluid transportation efficiency.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A fluid system, the fluid system further comprising:

[0008] a fluid container capable of storing a variety of fluids;

[0009] a waste container, wherein the waste container is used to store waste fluid;

[0010] A flow cell module, wherein the flow cell module has a flow cell inlet and a flow cell outlet;

[0011] A conversion module, wherein the conversion module has a first state and a second state;

[0012] a driving module, the driving module being in communication with the conversion module via the first power conduit or the second power conduit and providing driving force for the flow of the fluid;

[0013] When the conversion module is in the first state, the first power pipeline is connected to the fluid container through the conversion module, and the fluid stored in the fluid container can be driven by the driving module to push the original fluid in the path it passes through into the first power pipeline for temporary storage;

[0014] When the conversion module is in the second state, the second power pipeline is connected to the flow pool outlet through the conversion module, and the flow pool inlet is connected to the fluid container through the conversion module; the fluid stored in the fluid container can enter the flow pool module under the drive of the driving module, and push the original fluid in the flow pool module into the second power pipeline for temporary storage.

[0015] Optionally, when the conversion module is in the first state, the second power pipeline is connected to the waste container or the fluid container through the conversion module, and the fluid temporarily stored in the second power pipeline can be pushed to the waste container or the fluid container under the drive of the driving module.

[0016] Optionally, when the conversion module is in the second state, the first power pipeline is connected to the waste container or the fluid container through the conversion module, and the fluid temporarily stored in the first power pipeline can be pushed to the waste container or the fluid container under the drive of the driving module.

[0017] Optionally, the fluid system further includes a path switching module, and the path switching module can be connected to the conversion module through a diversion pipe.

[0018] Optionally, the path switching module is connected to the fluid container through a fluid recovery pipe.

[0019] Optionally, the path switching module is connected to the waste container through a second waste discharge pipe.

[0020] Optionally, the fluid system further includes a fluid selection module, wherein the fluid selection module is connected to the conversion module via a common pipeline, and the fluid selection module is connected to the fluid container via a fluid pipeline.

[0021] Optionally, a plurality of fluid pipelines are provided, and the fluid selection module is connected to the fluid container through the plurality of fluid pipelines.

[0022] Optionally, the fluid selection module is connected to the waste container through a first waste discharge pipe.

[0023] Optionally, the driving module is connected to the fluid container through a first preparation pipe, and the fluid in the fluid container can enter the driving module through the first preparation pipe.

[0024] Optionally, the driving module is connected to the waste container through a second preparation pipe, and the fluid in the driving module can enter the waste container through the second preparation pipe.

[0025] Optionally, the flow pool module is connected to the driving module via a bypass pipe, and the fluid in the flow pool module can enter the bypass pipe for temporary storage.

[0026] Optionally, the conversion module is a two-position six-way solenoid valve or a two-position six-way conversion valve or a two-position six-way reversing valve.

[0027] Optionally, the conversion module includes a valve, and the valve includes:

[0028] A stator, the stator having interface 1, interface 2, interface 3, interface 4, interface 5, interface 6, interface 41, interface 51, and interface 61;

[0029] a rotor having a first channel, a second channel, a third channel, and a fourth channel; the stator and the rotor are rotatably connected, and the rotor can rotate to a first position and a second position;

[0030] When the rotor is in the first position, the conversion module is in the first state, the interface 1 is connected to the interface 2 through the first channel, the interface 3 is connected to the interface 4 through the second channel, the interface 5 is connected to the interface 6 through the third channel, and the interface 51 is connected to the interface 61 through the fourth channel;

[0031] When the rotor is in the second position, the conversion module is in the second state, the interface 6 is connected to the interface 1 through the first channel, the interface 2 is connected to the interface 3 through the second channel, the interface 4 is connected to the interface 5 through the third channel, and the interface 41 is connected to the interface 51 through the fourth channel.

[0032] Beneficial effects:

[0033] The above-mentioned fluid system can change the connectivity of the path by switching the state of the conversion module, thereby realizing different functions.

[0034] When the conversion module is in the first state, the conversion module performs function 1-1: the conversion module connects the fluid container and the first power pipeline. At this time, the driving module can drive the fluid in the fluid container to flow into the first power pipeline. As a result, the original fluid in the path is pushed to the first power pipeline for temporary storage to facilitate subsequent discharge or recovery, and the path is filled with the fluid in the fluid container.

[0035] When the conversion module is in the second state, the conversion module has function 2-1: the conversion module connects the fluid container and the flow pool inlet, and the flow pool outlet is connected to the second power pipeline through the conversion module. Therefore, the fluid in the fluid container can enter the flow pool module through the conversion module for reaction. At this time, the original fluid in the flow pool module has been pushed into the second power pipeline for temporary storage for subsequent discharge or recovery.

[0036] In summary, the fluid system is centered around a conversion module that distributes the fluid flow path and driving force, allowing the fluid system to simultaneously have different independent paths. It can fill the pipeline with fluid between reactions and clean up the remaining fluid in the pipeline, achieving efficient fluid transportation, greatly accelerating the reaction process, and avoiding fluid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the pipeline connection of the fluid system provided by the present invention;

[0038] Figure 2 It is a schematic diagram of the working logic of the fluid system provided by the present invention;

[0039] Figure 3 This is a schematic diagram of the structure of the fluid system provided by the present invention. Figure 1 ;

[0040] Figure 4 This is a schematic diagram of the structure of the fluid system provided by the present invention. Figure 2 ;

[0041] Figure 5 This is a schematic diagram of the structure of the fluid system provided by the present invention. Figure 3 ;

[0042] Figure 6 This is a schematic diagram of the structure of the fluid system provided by the present invention. Figure 4 ;

[0043] Figure 7 This is a schematic diagram of the structure of the fluid system provided by the present invention. Figure 5 ;

[0044] Figure 8 This is an exploded view of the structure of the valve provided by the present invention;

[0045] Figure 9 It is a structural schematic diagram of the stator provided by the present invention;

[0046] Figure 10 It is a structural schematic diagram of the rotor provided by the present invention;

[0047] Figure 11 This is a schematic diagram of the assembly of the stator and rotor provided by the present invention Figure 1 ;

[0048] Figure 12 This is a schematic diagram of the assembly of the stator and rotor provided by the present invention Figure 2 .

[0049] In the picture:

[0050] 100, fluid container; 200, drive module; 300, flow cell module; 400, conversion module; 410, stator; 420, rotor; 421, first channel; 422, second channel; 423, third channel; 424, fourth channel; 430, motor; 440, rotating shaft; 500, fluid selection module; 600, path switching module; 700, waste container;

[0051] 1. Fluid pipeline; 2. First waste discharge pipeline; 3. First preparation pipeline; 4. Second preparation pipeline; 5. Fluid recovery pipeline; 6. Second waste discharge pipeline; 7. Common pipeline; 8. First power pipeline; 9. Second power pipeline; 10. Diversion pipeline; 11. Flow cell inlet pipeline; 12. Flow cell outlet pipeline; 13. Bypass pipeline;

[0052] a, interface 1; b, interface 2; c, interface 3; d, interface 4; e, interface 5; f, interface 6;

[0053] d′, interface 41; e′, interface 51; f′, interface 61. DETAILED DESCRIPTION

[0054] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms center, up, down, left, right, vertical, horizontal, inside, outside, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms first, second, and are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms first position and second position are two different positions, and the first feature is above, above, and above the second feature, including the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature is below, below, and below the second feature, including the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature is lower in level than the second feature.

[0056] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0057] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0058] See also Figure 1 This embodiment provides a fluid system, which further includes a fluid container 100, a waste container 700, a flow pool module 300, a conversion module 400, and a drive module 200. The fluid container 100 can store a variety of fluids. The waste container 700 is used to store waste fluids. The flow pool module 300 has a flow pool inlet and a flow pool outlet. The conversion module 400 has a first state and a second state. The drive module 200 is connected to the conversion module 400 through a first power pipeline 8 or a second power pipeline 9, and provides a driving force for the flow of the fluid.

[0059] When the conversion module 400 is in the first state, the first power pipeline 8 is connected to the fluid container 100 through the conversion module 400. The fluid stored in the fluid container 100 can be driven by the driving module 200 to push the original fluid in the path into the first power pipeline 8 for temporary storage.

[0060] When the conversion module 400 is in the second state, the second power pipeline 9 is connected to the flow pool outlet through the conversion module 400, and the flow pool inlet is connected to the fluid container 100 through the conversion module 400; the fluid stored in the fluid container 100 can enter the flow pool module 300 under the drive of the driving module 200, and push the original fluid in the flow pool module 300 into the second power pipeline 9 for temporary storage.

[0061] The fluid system can change the connection mode of the path by switching the state of the conversion module 400, thereby achieving different functions. When the conversion module 400 is in the first state, the conversion module 400 performs function 1-1: the conversion module 400 connects the fluid container 100 with the first power pipeline 8. At this time, the driving module 200 can drive the fluid in the fluid container 100 to flow into the first power pipeline 8. As a result, the original fluid in the path is pushed into the first power pipeline 8 for temporary storage, facilitating subsequent discharge or recovery, and the path is filled with the fluid in the fluid container 100. When the conversion module 400 is in the second state, the conversion module 400 performs function 2-1: the conversion module 400 connects the fluid container 100 with the flow cell inlet, and the flow cell outlet is connected to the second power pipeline 9 through the conversion module 400. As a result, the fluid in the fluid container 100 can enter the flow cell module 300 through the conversion module 400 for reaction. At this time, the original fluid in the flow cell module 300 has been pushed into the second power pipeline 9 for temporary storage, facilitating subsequent discharge or recovery. The fluid system is centered around the conversion module 400, which distributes the fluid flow path and driving force, allowing the fluid system to simultaneously have different independent paths. It is capable of filling the pipeline with fluid and cleaning the remaining fluid in the pipeline between reactions, thereby achieving efficient fluid transportation, greatly accelerating the reaction process, and avoiding fluid waste.

[0062] Furthermore, when the conversion module 400 is in the first state, the second power conduit 9 is connected to the waste container 700 or the fluid container 100 through the conversion module 400, and the fluid temporarily stored in the second power conduit 9 can be pushed to the waste container 700 or the fluid container 100 under the drive of the drive module 200. That is, when the conversion module 400 is in the first state, the conversion module 400 also performs functions 1-2: the conversion module 400 can also connect the second power conduit 9 with the waste container 700 or the fluid container 100. Since the fluid container 100 is connected to the drive module 200, the drive module 200 is connected to the second power conduit 9, so that the fluid temporarily stored in the second power conduit 9 is pushed to the waste container 700 for discharge or pushed to the fluid container 100 for recovery.

[0063] Furthermore, when the conversion module 400 is in the second state, the first power conduit 8 is connected to the waste container 700 or the fluid container 100 through the conversion module 400, and the fluid temporarily stored in the first power conduit 8 can be pushed to the waste container 700 or the fluid container 100 under the drive of the drive module 200. That is, when the conversion module 400 is in the second state, the conversion module 400 also performs function 2-2: the conversion module 400 connects the first power conduit 8 and the waste container 700 or the fluid container 100. Since the fluid container 100 is connected to the drive module 200, the drive module 200 is connected to the first power conduit 8, so that the fluid temporarily stored in the first power conduit 8 is pushed to the waste container 700 for discharge or pushed to the fluid container 100 for recovery.

[0064] In summary, when the conversion module 400 is in the first state, functions 1-1 and 1-2 can be performed simultaneously; when the conversion module 400 is in the second state, functions 2-1 and 2-2 can be performed simultaneously. In other words, the delivery of the fluid required for the reaction and the discharge or recovery of the temporarily stored fluid can be performed simultaneously, thereby shortening the fluid delivery time, greatly accelerating the reaction process, and avoiding fluid waste.

[0065] Continue to see Figure 1 The functions and related configurations of the conversion module 400, fluid container 100, fluid selection module 500, driving module 200, path switching module 600, flow pool module 300, and waste container 700 provided in this embodiment are further described below:

[0066] In this embodiment, the conversion module 400 includes six interfaces, among which interface 3c is connected to the flow cell inlet pipe 11, interface 4d is connected to the flow cell outlet pipe 12, interface 5e is connected to the second power pipe 9, interface 6f is connected to the diversion pipe 10, interface 1a is connected to the first power pipe 8, and interface 2b is connected to the common pipe 7. The main function of the conversion module 400 is to switch the pipes. By controlling the connection and disconnection between the drive module 200 and the flow cell module 300, the path switching module 600, and the fluid selection module 500, different flow paths are formed. The conversion module 400 should have at least two states:

[0067] First state: interface 1a is connected to interface 2b, interface 3c is connected to interface 4d, and interface 5e is connected to interface 6f;

[0068] Second state: interface 6f is connected to interface 1a, interface 2b is connected to interface 3c, and interface 4d is connected to interface 5e.

[0069] Depending on the design requirements of the conversion module 400, a 2-position, 6-way conversion valve or a conversion valve designed to meet specific requirements can be used. A conversion valve is a subclass of a rotary shear valve. Alternatively, a valve assembly consisting of multiple 2-position, 3-way solenoid valves and 2-position, 2-way solenoid valves and corresponding baseplates can be used to achieve the aforementioned functions.

[0070] The fluid container 100 is connected to a fluid pipeline 1, a first preparation pipeline 3, and a fluid recovery pipeline 5. The main function of the fluid container 100 is to store a variety of fluids, including fluids to be used, fluids recovered after use, and fluids required for filling by the driving module 200. Each of the above-mentioned fluids can be one or more. Among them, when the fluid to be used and the fluid to be recovered after use are the same fluid, they can be designed to be mixed or stored independently according to specific usage requirements. According to the design requirements of the fluid container 100, various forms of containers or container combinations such as an integrated multi-porous reagent kit, a split multi-porous reagent kit, a reagent bottle group composed of multiple reagent bottles, or a test tube group composed of multiple test tubes can be designed or selected for use. The "original fluid" in the text refers to the fluid that remains in the pipeline and needs to be removed. The fluid can be recovered or discharged according to usage needs.

[0071] The fluid selection module 500 can be connected to the fluid pipeline 1, the first waste discharge pipeline 2, and the common pipeline 7. The main function of the fluid selection module 500 is pipeline switching. When transporting fluid, the fluid pipeline 1 corresponding to the fluid to be transported is connected to the common pipeline 7, or when the common pipeline 7 needs to be cleaned, the common pipeline 7 is connected to the first waste discharge pipeline 2. According to the design requirements of the fluid selection module 500, a selection valve can be used. The selection valve belongs to a rotary shear valve, which is another detailed classification of the latter. During design, the number of positions of the selection valve needs to be determined according to the type of fluid being transported. For example, the common ones are a six-position seven-way selection valve, a ten-position eleven-way selection valve, and a 24-position 25-way selection valve. In addition, a valve group consisting of multiple two-position three-way solenoid valves and two-position two-way solenoid valves and corresponding substrates can also be used to achieve the above functions. In addition, the above functions can also be achieved using an automated pipetting system.

[0072] The driving module 200 is connected to the first power pipeline 8, the second power pipeline 9, the first preparation pipeline 3, and the second preparation pipeline 4. Among them, the second preparation pipeline 4 is not a necessary design, which is determined according to the principle that the driving module 200 drives the movement of fluid. The main function of the driving module 200 is to drive the flow of fluid, so all flow paths that can be formed in the fluid system should be connected to the driving module 200. The driving module 200 provides driving force through the first power pipeline 8 and the second power pipeline 9, so that the fluid transportation in two different flow paths can be maintained at the same time. When the driving module 200 provides a positive pressure driving force outward, this is a process of pushing the fluid outward. The driving module 200 needs to be connected to the first preparation pipeline 3 to suck the filling fluid from the fluid container 100 to supplement the volume pushed outward. When the drive module 200 provides a negative pressure driving force outward, this is a process of drawing fluid inward. For certain drive methods, such as a diaphragm pump or a gear pump, the drive module 200 needs to be connected to the second preparation pipe 4 to discharge fluid into the waste container 700, leaving a volume for inward drawing. However, for other drive methods, such as a syringe, it is not necessary to connect to the second preparation pipe 4. This type of drive method can first draw the fluid to be drawn into the syringe, and then push it outward when the conversion module 400 connects the drive module 200 to other pipes. In addition, when the flow cell module 300 is connected to the drive module 200 via the bypass pipe 13, in order to transport the fluid in the bypass pipe 13 to the waste container 700, it is also necessary to connect the drive module 200 to the waste container 700 through the second preparation pipe 4.

[0073] Depending on the design requirements of the drive module 200, common methods such as syringe pumps, plunger pumps, diaphragm pumps, and gear pumps can be used to drive the fluid. Special methods such as compressed air and gravity overflow can also be used to drive the fluid. It should be noted that each method requires a valve head with sufficient holes for the required pipes to connect and switch the pipes. Syringe pumps typically provide optional valve heads, while some types of pumps require the use of a custom valve block as a valve head.

[0074] The path switching module 600 can be connected to the shunt pipe 10, the fluid recovery pipe 5, and the second waste discharge pipe 6. The main function of the path switching module 600 is pipe switching. When the fluid needs to be recovered, the shunt pipe 10 is connected to the fluid recovery pipe 5, or when the waste liquid needs to be discharged, the shunt pipe 10 is connected to the second waste discharge pipe 6. According to the design requirements of the path switching module 600, a selection valve can be used. The number of positions of the selection valve is mainly determined according to the type of fluid to be recovered, such as the common six-position seven-way selection valve, the ten-position eleven-way selection valve, and the twenty-four-position twenty-five-way selection valve. The above functions can also be achieved by using a valve group consisting of multiple two-position three-way solenoid valves and two-position two-way solenoid valves and corresponding substrates. In addition, the above functions can also be achieved using an automated pipetting system.

[0075] The flow cell module 300 has a flow cell inlet and a flow cell outlet, and is connected to a flow cell inlet pipe 11, a flow cell outlet pipe 12, and a bypass pipe 13. The main function of the flow cell module 300 is to allow new fluid to flow in from the flow cell inlet pipe 11 and to allow the original fluid to flow out from the flow cell outlet pipe 12. The fluid will undergo biological or chemical reactions in the flow cell of the flow cell module 300. The design of the biological or chemical reactions in the flow cell is not the content of the present invention. The flow cell module 300 may sometimes increase the bypass pipe 13 according to design needs so that some fluids can be directly discharged without entering the flow cell. Therefore, the bypass pipe 13 is not necessary to exist.

[0076] Waste container 700 is connected to the second waste discharge conduit 6, the second preparation conduit 4, and the fluid recovery conduit 5. The primary function of waste container 700 is to store waste fluids after use. Depending on the specific implementation requirements, waste container 700 can be designed for mixed or separate storage. Depending on the design requirements of waste container 700, various container types or combinations of containers can be designed or used, such as an integrated multi-hole waste box or waste bucket.

[0077] Continue to see Figure 1 , the pipeline provided in this embodiment is described below:

[0078] The fluid pipeline 1 is a pipeline connecting the fluid selection module 500 and the fluid container 100. It is used to transport the various fluids stored in the fluid container 100 from the fluid container 100 to the fluid selection module 500, and can also transport them in the opposite direction. Optionally, multiple fluid pipelines 1 are provided, and the fluid selection module 500 is connected to the fluid container 100 through multiple fluid pipelines 1. The number of fluid pipelines 1 depends on the scheme of the fluid selection module 500. When the fluid selection module 500 uses a selection valve or a valve group, the number of fluid pipelines 1 should correspond to the type of fluid or the hole position in the fluid container 100, so that each fluid or each hole position has an independent fluid pipeline 1 for use. When the fluid selection module 500 uses an automated pipetting system, there can be only one fluid pipeline 1, which needs to be connected to a sampling needle. At this time, the fluid pipeline 1 is shared by all the fluids in the fluid container 100.

[0079] Common conduit 7 connects the fluid selection module 500 and the conversion module 400. In this embodiment, common conduit 7 is connected to port 2b. It is used to transport fluid from the fluid selection module 500 to the conversion module 400, and vice versa. Because common conduit 7 is shared by all fluids in the fluid container 100, it must be cleaned before each fluid transport.

[0080] The first power conduit 8 is a conduit connecting the driving module 200 and the conversion module 400. In this embodiment, the first power conduit 8 is connected to the interface 1a and is used to transport fluid from the driving module 200 to the conversion module 400, and vice versa.

[0081] The second power conduit 9 is a conduit connecting the driving module 200 and the conversion module 400. In this embodiment, the second power conduit 9 is connected to the interface 5e and is used to transport fluid from the driving module 200 to the conversion module 400, and vice versa.

[0082] The flow cell inlet pipe 11 is a pipe connecting the flow cell module 300 and the conversion module 400. In this embodiment, the flow cell inlet pipe 11 is connected to the interface 3c and is used to transport fluid from the conversion module 400 to the flow cell module 300.

[0083] The flow cell outlet pipe 12 is a pipe connecting the flow cell module 300 and the conversion module 400. In this embodiment, the flow cell outlet pipe 12 is connected to the interface 4d. It is used to transport fluid from the flow cell module 300 to the conversion module 400. The number of flow cell outlet pipes 12 depends on the number of channels in the flow cell.

[0084] Bypass pipe 13 connects the flow cell module 300 and the driver module 200. Fluid within the flow cell module can enter bypass pipe 13 for temporary storage, then be transported from bypass pipe 13 to the driver module 200, and then discharged into waste container 700 through second preparation pipe 4. Bypass pipe 13 is not a mandatory requirement and depends on the implementation requirements of the present invention.

[0085] The shunt pipe 10 connects the path switching module 600 and the interface 4d of the conversion module 400. In this embodiment, the shunt pipe 10 is connected to the interface 6f. It is used to transport fluid from the conversion module 400 to the path switching module 600. The number of shunt pipes 10 depends on the number of channels in the flow cell.

[0086] The first waste discharge pipe 2 is a pipe connecting the fluid selection module 500 and the waste container 700 , and is used to transport the fluid from the fluid selection module 500 to the waste container 700 .

[0087] The second waste discharge pipe 6 is a pipe connecting the path switching module 600 and the waste container 700 , and is used to transport the fluid from the path switching module 600 to the waste container 700 .

[0088] The first preparation pipe 3 is a pipe connecting the driving module 200 and the fluid container 100. It is used to transport fluid from the driving module 200 to the fluid container 100, and can also transport fluid in the reverse direction. That is, the fluid in the fluid container 100 can enter the driving module 200 through the first preparation pipe 3. The number of first preparation pipes 3 depends on the design of the driving module 200.

[0089] The second preparation pipeline 4 connects the drive module 200 and the waste container 700. It is used to transport fluid from the drive module 200 to the waste container 700, and vice versa. The number of second preparation pipelines 4 depends on the design of the drive module 200 and whether there is a bypass pipeline 13.

[0090] The fluid recovery pipe 5 connects the path switching module 600 and the fluid container 100. It is used to transport the fluid recovered in the fluid recovery pipe 5 to the fluid container 100. The number of fluid recovery pipes 5 depends on the design of the fluid container 100. Each type of fluid to be recovered requires a fluid recovery pipe 5 corresponding to a hole in the fluid container 100. When the path switching module 600 uses an automated pipetting system, there can be only one fluid recovery pipe 5, which needs to be connected to a sampling needle. In this case, the fluid recovery pipe 5 is shared by all fluids to be recovered in the fluid container 100.

[0091] The following describes the multiple flow paths in this embodiment in detail:

[0092] The fluid flow path includes "Path 1-1," which exists in the first state of the conversion module 400. In this path, the driving force for fluid flow comes from the negative pressure provided by the driver module 200 via the first power conduit 8. Optionally, the fluid selection module 500 is connected to the fluid container 100 via the fluid conduit 1, and the fluid selection module 500 is connected to the interface 2b via the common conduit 7. The fluid selection module 500 is configured to selectively transport multiple fluids within the fluid container 100. Specifically, fluid originates from the fluid container 100 and passes through the fluid conduit 1, the fluid selection module 500, the common conduit 7, the interface 2b of the conversion module 400, the interface 1a of the conversion module 400, and the first power conduit 8, before reaching the driver module 200. This path can be used to prepare fluid for transport from the fluid container 100 to the flow cell module 300, pre-filling the common conduit 7 with the fluid to be transported. In a specific design, this path allows the fluid in the fluid container 100 to be pre-displaced between the fluid selection module 500 and the common conduit 7, allowing the existing fluid to be temporarily stored in the first power conduit 8. In some embodiments, the fluid can also be discharged from the driving module 200 through the second preparation pipeline 4 to the waste container 700.

[0093] Furthermore, the fluid flow path also includes "path 2-1," which exists in the second state of the conversion module 400. In this path, the driving force for fluid flow comes from the negative pressure provided by the driver module 200 via the bypass conduit 13. The flow cell module 300 is connected to the driver module 200 via the bypass conduit 13, and the driver module 200 is connected to the waste container 700 via the second preparation conduit 4. The fluid within the flow cell module 300 can flow to the waste container 700 in sequence through the bypass conduit 13, the driver module 200, and the second preparation conduit 4. Specifically, the fluid starts from the fluid container 100 and passes through the fluid conduit 1, the fluid selection module 500, the common conduit 7, the interface 2b of the conversion module 400, the interface 3c of the conversion module 400, the flow cell inlet conduit 11, the flow cell module 300, the bypass conduit 13, the driver module 200, and the second preparation conduit 4, to reach the waste conduit. In a specific design, the bypass conduit 13 can be arbitrarily designed and can be placed before the inlet of the flow cell, after the outlet of the flow cell, or even not at all. If placed before the inlet of the flow cell, this path allows the fluid in the fluid container 100 to be replaced in the flow cell inlet conduit 11, allowing the original fluid in the flow cell inlet conduit 11 to enter the waste container 700 through the bypass conduit 13, the drive module 200, and the second preparation conduit 4. If placed after the inlet of the flow cell, this path allows the fluid in the flow cell to enter the waste container 700 through the bypass conduit 13, the drive module 200, and the second preparation conduit 4.

[0094] Furthermore, the fluid flow path also includes "path 2-2," which exists in the second state of the conversion module 400, where the driving force comes from the negative pressure provided by the driver module 200 via the second power conduit 9. Optionally, port 4d of the conversion module 400 is connected to the flow cell module 300 via the flow cell outlet conduit 12, and port 5e is connected to the driver module 200 via the second power conduit 9. Port 4d can communicate with port 5e. Under the action of the driver module 200, the existing fluid in the flow cell module 300 can be sequentially transferred through the flow cell outlet conduit 12, port 4d, and port 5e to the second power conduit 9 for storage. Optionally, the driver module 200 is connected to the waste container 700 via the second preparation conduit 4. Under the action of the driver module 200, the existing fluid in the second power conduit 9 can flow through the second preparation conduit 4 to the waste container 700. Specifically, fluid originates from the fluid container 100 and passes through the fluid conduit 1, the fluid selection module 500, the common conduit 7, the interface 2b of the conversion module 400, the interface 3c of the conversion module 400, the flow cell inlet conduit 11, the flow cell module 300, the flow cell outlet conduit 12, the interface 4d of the conversion module 400, the interface 5e of the conversion module 400, and the second power conduit 9, reaching the driver module 200. In certain embodiments, fluid can also be discharged from the driver module 200 through the second preparation conduit 4 to the waste container 700. In a specific design, this path allows the fluid in the fluid container 100 to be completely replaced in the flow cell of the flow cell module 300, allowing the original fluid in the flow cell to enter the second power conduit 9 for temporary storage.

[0095] Furthermore, the fluid container 100 is connected to the drive module 200 via the first preparation conduit 3, and the interface 1a can be connected to the waste container 700 or the fluid container 100. Under the action of the drive module 200, the fluid in the fluid container 100 can flow sequentially through the first preparation conduit 3, the first power conduit 8, and the interface 1a to the waste container 700 to remove the existing fluid in the first power conduit 8, or flow sequentially through the first preparation conduit 3, the first power conduit 8, and the interface 1a to the fluid container 100 to recover the existing fluid in the first power conduit 8. Therefore, the fluid flow path also includes "path 2-3" and "path 2-4."

[0096] "Path 2-3" exists in the second state of conversion module 400. In this path, the driving force for fluid flow comes from the positive pressure provided by drive module 200 through first power conduit 8. In this embodiment, the fluid originates from fluid container 100 and passes through first preparation conduit 3, drive module 200, first power conduit 8, interface 1a of conversion module 400, interface 6f of conversion module 400, diverter conduit 10, path switching module 600, and second waste discharge conduit 6, before reaching waste container 700. This path can be used for fluid in fluid container 100 to traverse first power conduit 8, conversion module 400, diverter conduit 10, and path switching module 600. In actual use, this path can be used to deliver cleaning agent to first power conduit 8, conversion module 400, diverter conduit 10, and path switching module 600 for cleaning of pipelines and modules.

[0097] "Path 2-4" exists in the second state of the conversion module 400. In this path, the driving force for the flow of the fluid comes from the positive pressure provided by the drive module 200 through the first power pipe 8. The direction of the arrows in the figure shows that the fluid starts from the fluid container 100, passes through the first preparation pipe 3, the drive module 200, the first power pipe 8, the interface 1a of the conversion module 400, the interface 6f of the conversion module 400, the diversion pipe 10, the path switching module 600, the fluid recovery pipe 5, and reaches the fluid container 100. This path can be used for the fluid in the fluid container 100 to traverse the first power pipe 8, the conversion module 400, the diversion pipe 10, the path switching module 600 and the fluid recovery pipe 5. In a specific design, a cleaning agent can be used to clean the first power pipe 8, the conversion module 400, the diversion pipe 10, the path switching module 600 and the fluid recovery pipe 5. It should be noted that this path requires transporting the fluid to the fluid container 100. If the transported fluid is a cleaning agent, it will cause contamination to the fluid container 100. Therefore, transporting cleaning agents can only be used for the automatic cleaning process after the work is completed.

[0098] Furthermore, the common conduit 7 can be connected to a waste container 700 or a fluid container 100. Under the action of the drive module 200, the fluid in the fluid container 100 can sequentially flow through the first preparation conduit 3, the first power conduit 8, and the common conduit 7 into the waste container 700 to remove the existing fluid in the common conduit 7, or sequentially flow through the first preparation conduit 3, the first power conduit 8, and the common conduit 7 into the fluid container 100 to recover the existing fluid in the common conduit 7. Alternatively, the fluid selection module 500 is connected to the common conduit 7, the waste container 700 is connected to the fluid selection module 500 via the first waste discharge conduit 2, and the fluid container 100 is connected to the fluid selection module 500 via the fluid conduit 1. Therefore, the fluid flow path also includes "path 1-2" and "path 1-3."

[0099] "Path 1-2" exists in the first state of conversion module 400, where the driving force for fluid flow comes from the positive pressure provided by drive module 200 through first power conduit 8. Specifically, the fluid originates from fluid container 100, passes sequentially through first preparation conduit 3, drive module 200, first power conduit 8, interface 1a, interface 2b, common conduit 7, fluid selection module 500, and first waste discharge conduit 2, before reaching waste container 700. This path enables the fluid in fluid container 100 to traverse conversion module 400, common conduit 7, and fluid selection module 500. In specific applications, "Path 1-2" can be used to deliver cleaning agents to conversion module 400, common conduit 7, and fluid selection module 500 for cleaning of pipelines and modules.

[0100] "Path 1-3" exists in the first state of conversion module 400, where the driving force for fluid flow comes from the positive pressure provided by drive module 200 through first power conduit 8. Specifically, fluid originates from fluid container 100 and passes through first preparation conduit 3, drive module 200, first power conduit 8, port 1a of conversion module 400, port 2b of conversion module 400, common conduit 7, fluid selection module 500, and fluid conduit 1, ultimately reaching fluid container 100. This path enables the fluid in fluid container 100 to traverse the conversion module 400, common conduit 7, fluid selection module 500, and fluid conduit 1. In specific applications, "Path 1-3" can be used to deliver cleaning agents to conversion module 400, common conduit 7, fluid selection module 500, and fluid conduit 1 for cleaning of pipelines and modules. It should be noted that this path requires transporting fluid to fluid container 100. If the transported fluid is a cleaning agent, it will contaminate fluid container 100. Therefore, transporting cleaning agents should only be used for automated cleaning processes after a job is completed.

[0101] Furthermore, port 5e can be connected to port 6f, which is connected to a diversion pipe 10, which is connected to a waste container 700 or a fluid container 100. The original fluid stored in the second power pipe 9 can flow sequentially through port 5e, port 6f, and diversion pipe 10 to the waste container 700 or the fluid container 100. Therefore, the fluid flow path also includes "path 1-4" and "path 1-5."

[0102] "Path 1-4" exists in the first state of the conversion module 400, where the driving force comes from the positive pressure provided by the drive module 200 via the second power conduit 9. Optionally, the path switching module 600 is connected to the port 6f via the diverter conduit 10, and the path switching module 600 is connected to the waste container 700 via the second waste discharge conduit 6. The original fluid stored in the second power conduit 9 can flow sequentially through the port 5e, the port 6f, the diverter conduit 10, the path switching module 600, and the second waste discharge conduit 6 to the waste container 700 for discharge. Specifically, the fluid originates from the fluid container 100 and passes through the first preparation conduit 3, the drive module 200, the second power conduit 9, the port 5e of the conversion module 400, the port 6f of the conversion module 400, the diverter conduit 10, the path switching module 600, and the second waste discharge conduit 6, to reach the waste container 700. This path can be used for fluid in the fluid container 100 to traverse the conversion module 400, the diverter conduit 10, and the path switching module 600. "Path 1-4" realizes the use of filling fluid to push the non-recyclable original fluid temporarily stored in the second power pipeline 9 to the waste container 700, or uses a cleaning agent to clean the conversion module 400, the diversion pipeline 10 and the path switching module 600.

[0103] "Path 1-5" exists in the first state of the conversion module 400, and the driving force comes from the positive pressure provided by the drive module 200 through the second power pipeline 9. Optionally, the path switching module 600 is connected to the fluid container 100 through the fluid recovery pipeline 5, and the original fluid stored in the second power pipeline 9 can flow to the fluid container 100 through the interface 5e, the interface 6f, the diversion pipeline 10, the path switching module 600 and the fluid recovery pipeline 5 in sequence to recover the original fluid. Specifically, the fluid starts from the fluid container 100 and passes through the first preparation pipeline 3, the drive module 200, the second power pipeline 9, the interface 5e of the conversion module 400, the interface 6f of the conversion module 400, the diversion pipeline 10, the path switching module 600, and the fluid recovery pipeline 5 in sequence to reach the fluid container 100. This path can be used to recover the fluid temporarily stored in the second power pipeline 9 to the fluid container 100. In a specific design, a filling fluid can be used to push the recyclable original fluid temporarily stored in the second power pipe 9 to the fluid container 100, or a cleaning agent can be used to clean the conversion module 400, the diversion pipe 10, the path switching module 600, and the fluid recovery pipe 5. It should be noted that this path can transport the fluid to the fluid container 100. If the transported fluid is a cleaning agent, it will cause contamination of the fluid container 100. Therefore, the transportation of cleaning agents can only be used in the automatic cleaning process after the work is completed.

[0104] Based on the above analysis of the paths, it can be seen that in this embodiment, when the conversion module 400 is in the first state, "Path 1-1", "Path 1-2", and "Path 1-3" are mutually exclusive, while "Path 1-4" and "Path 1-5" are mutually exclusive. One of "Path 1-1", "Path 1-2", and "Path 1-3" can be executed simultaneously with one of "Path 1-4" and "Path 1-5" without being mutually exclusive. When the conversion module 400 is in the second state, "Path 2-2" and "Path 2-1" are mutually exclusive, while "Path 2-3" and "Path 2-4" are mutually exclusive. One of "Path 2-2" and "Path 2-1" can be executed simultaneously with one of "Path 2-3" and "Path 2-4" without being mutually exclusive.

[0105] Figure 2 A schematic diagram of the working logic of the fluid system provided in this embodiment is provided. Using this working logic, it is possible to transport a variety of fluids, while also completing the recovery of reusable fluids and real-time cleaning of the fluid path. In other embodiments, the working logic can be reasonably adjusted according to the needs of use, and all schemes are not listed here one by one. The working logic provided in this embodiment is divided into three steps (the following "reagent" represents one or more fluids required for the reaction):

[0106] Step 1: Set the conversion module 400 to the first state, use “path 1 - 1” to take out the first reagent from the fluid container 100 , and complete the replacement of the reagent in the common pipeline 7 .

[0107] Step 2: Set the switching module 400 to the second state. Path 2-1 is first used to continue transporting the first reagent from the common conduit 7 and complete the replacement of the reagent in the flow cell inlet conduit 11. Path 2-2 is then used to complete the replacement of the reagent in the flow cell. While using both Path 2-1 and Path 2-2, Path 2-3 is also used to complete the cleaning and draining of the diversion conduit 10 and the path switching module 600.

[0108] Step 3 sets the conversion module 400 to the first state. First, "Path 1-2" is used to clean the first reagent or its residue in the switching module, common pipeline 7, and fluid selection module 500 and discharge it to the waste container 700. Then, "Path 1-1" is used to remove the second reagent from the fluid container 100 and complete the replacement of the second reagent in the common pipeline 7. When using "Path 1-2" and "Path 1-1", it is also selected whether to recycle the first reagent. If not, only "Path 1-4" is used to discharge the unrecycled waste to the waste container 700. If recycling is required, "Path 1-5" is first used to complete the recovery of the first reagent, and then "Path 1-4" is used to discharge the unrecycled waste to the waste container 700.

[0109] After step 3 is completed, choose whether to transport the second reagent. If so, return to step 2 until no reagent is transported. If not, the work is completed.

[0110] Figure 3 A schematic structural diagram of a fluid system provided for this embodiment. In this fluid system, the flow pool module 300 is a single-channel flow pool. The conversion module 400 is a two-position six-way conversion valve. The fluid drive module is a single-channel injection pump with a distributed valve head with a three-position hole. The fluid selection module 500 is an eight-position nine-way selection valve. The path switching module 600 is a two-position three-way solenoid valve. The fluid container 100 is a 7-hole reagent box, of which six holes are reagents and one hole is a fluid that serves as a filling. The waste container 700 is a single-hole waste box. This embodiment can transport reagents in six holes to the flow pool, and can recycle the reagent in one hole.

[0111] Figure 4A schematic diagram of another fluid system provided in this embodiment. In this embodiment, the flow cell module 300 is a single-channel flow cell, and a two-position, three-way solenoid valve connects to the bypass pipe 13 at the inlet of the flow cell. The conversion module 400 is a two-position, six-way conversion valve. The fluid drive module includes two single-channel syringe pumps and a two-position, three-way solenoid valve. The syringe pump that controls fluid transport in the second power line 9 has a distributed valve head with three positions. One of the valve heads is also connected to a two-position, three-way solenoid valve that connects the bypass pipe 13 and the second preparation line 4. This allows the fluid in the bypass line 13 to be discharged from the second preparation line 4 to the waste line through the switching of the solenoid valve. The syringe pump that controls fluid transport in the first power line 8 has a valve head with two positions. The fluid selection module 500 is an eight-position, nine-way selection valve. The path switching module 600 is an eight-position, nine-way selection valve. The fluid container 100 is a seven-position reagent kit, with six positions for reagents and one position for filling fluid. The waste container 700 is a single-hole waste box. This embodiment can transport reagents from six wells to the flow cell and can recycle the six reagents.

[0112] Figure 5 This embodiment provides a schematic diagram of another fluid system structure. In this embodiment, the flow cell module 300 is a dual-channel flow cell, and a three-way connector is provided before the inlet of the flow cell so that a flow cell inlet pipe 11 can simultaneously transport fluid to the channels of the two flow cells. The conversion module 400 is a specially customized two-position nine-way selector valve (see Figures 8 to 12 ). The fluid drive module includes a dual-channel syringe pump and a single-channel syringe pump, wherein the dual-channel syringe pump controls the fluid transport in the second power pipeline 9, and each channel of the syringe pump has a valve head with a 2-position hole, while the single-channel syringe pump controls the fluid transport in the first power pipeline 8, and the syringe pump has a valve head with a 2-position hole. The fluid selection module 500 is an eight-position nine-way selection valve. The path switching module 600 is an eight-position nine-way selection valve. The fluid container 100 is a 7-hole reagent box, of which six holes are reagents and one hole is a fluid that serves as a filling. The waste container 700 is a single-hole waste box. This embodiment can transport reagents in six holes to the flow pool, and can recycle reagents in six holes.

[0113] It is understandable that the components used in the modules of the fluid system are not limited to the above-mentioned ones. For example, the conversion module 400 can be a two-position six-way reversing valve, a two-position six-way solenoid valve, a two-position six-way conversion valve, etc. Of course, the conversion module 400 can also be a valve combination that can play the same function, such as Figure 6 As shown, the conversion module 400 is composed of three three-way connectors and five two-position two-way solenoid valves. Figure 7 As shown, the conversion module 400 is composed of two three-way connectors, two two-position two-way solenoid valves, and two two-position three-way solenoid valves. In other embodiments, the components used in each module can be selected according to actual use needs. As long as the structural form can achieve the function of the fluid system, it is within the scope of protection of this application.

[0114] Optionally, the conversion module 400 includes Figures 8 to 12 The valve shown. This valve is a two-position nine-way switching valve that can achieve Figure 5 The functions required by the conversion module 400.

[0115] The valve further includes components such as a motor 430, a rotating shaft 440, a stator 410, and a rotor 420. The motor 430 and the rotor 420 are connected via the rotating shaft 440. The motor 430 drives the rotor 420 to rotate, thereby changing the position of the rotor 420 and, in turn, the connection mode of the valve interface. Other components and connection modes of the valve are well-established in the art and will not be further described here.

[0116] Figure 9 It is the stator 410 of the valve. Figure 10 The rotor 420 of the valve is shown. Ports 1a, 2b, and 3c are provided on the stator 410. The stator 410 also has ports 4d, 5e, 6f, 41d', 51e', and 61f'. The rotor 420 has a first channel 421, a second channel 422, a third channel 423, and a fourth channel 424. The stator 410 and rotor 420 are rotatably connected, allowing the rotor 420 to rotate between a first position and a second position.

[0117] See also Figure 11 When the rotor 420 is in the first position, the interface 1a is connected to the interface 2b through the first channel 421, the interface 3c is connected to the interface 4d through the second channel 422, the interface 5e is connected to the interface 6f through the third channel 423, and the interface 51e′ is connected to the interface 61f′ through the fourth channel 424. At this time, the conversion module 400 is in the first state;

[0118] See also Figure 12 When the rotor 420 is in the second position, the interface 6f is connected to the interface 1a through the first channel 421, the interface 2b is connected to the interface 3c through the second channel 422, the interface 4d is connected to the interface 5e through the third channel 423, and the interface 41d′ is connected to the interface 51e′ through the fourth channel 424. At this time, the conversion module 400 is in the second state.

[0119] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A fluid system, characterized in that: The fluid system further comprises: A fluid container (100), wherein the fluid container (100) is capable of storing a variety of fluids; A waste container (700), wherein the waste container (700) is used to store waste fluid; A flow cell module (300), wherein the flow cell module (300) has a flow cell inlet and a flow cell outlet; A conversion module (400), wherein the conversion module (400) has a first state and a second state; a driving module (200), the driving module (200) being in communication with the conversion module (400) via a first power pipeline (8) or a second power pipeline (9), and providing a driving force for the flow of the fluid; When the conversion module (400) is in the first state, the first power pipeline (8) is connected to the fluid container (100) through the conversion module (400), and the fluid stored in the fluid container (100) can be driven by the driving module (200) to push the original fluid in the path to enter the first power pipeline (8) for temporary storage; When the conversion module (400) is in the second state, the second power pipeline (9) is connected to the flow pool outlet through the conversion module (400), and the flow pool inlet is connected to the fluid container (100) through the conversion module (400); the fluid stored in the fluid container (100) can enter the flow pool module (300) under the drive of the driving module (200), and push the original fluid in the flow pool module (300) into the second power pipeline (9) for temporary storage.

2. The fluid system according to claim 1, characterized in that When the conversion module (400) is in the first state, the second power pipeline (9) is connected to the waste container (700) or the fluid container (100) through the conversion module (400), and the fluid temporarily stored in the second power pipeline (9) can be pushed to the waste container (700) or the fluid container (100) under the drive of the driving module (200).

3. The fluid system according to any one of claims 1 to 2, characterized in that: When the conversion module (400) is in the second state, the first power pipeline (8) is connected to the waste container (700) or the fluid container (100) through the conversion module (400), and the fluid temporarily stored in the first power pipeline (8) can be pushed to the waste container (700) or the fluid container (100) under the drive of the driving module (200).

4. The fluid system according to any one of claims 1 to 2, characterized in that: The fluid system further comprises a path switching module (600), and the path switching module (600) can be connected to the conversion module (400) via a diversion pipe (10).

5. The fluid system according to claim 4, characterized in that The path switching module (600) is connected to the fluid container (100) via a fluid recovery pipe (5).

6. The fluid system according to claim 4, characterized in that The path switching module (600) is connected to the waste container (700) via a second waste discharge pipe (6).

7. The fluid system according to any one of claims 1, 2, 5 and 6, characterized in that The fluid system further comprises a fluid selection module (500), wherein the fluid selection module (500) is connected to the conversion module (400) via a common pipe (7), and the fluid selection module (500) is connected to the fluid container (100) via a fluid pipe (1).

8. The fluid system according to claim 7, characterized in that The fluid pipelines (1) are provided in plurality, and the fluid selection module (500) is connected to the fluid container (100) via the plurality of fluid pipelines (1).

9. The fluid system according to claim 7, wherein: The fluid selection module (500) is connected to the waste container (700) through a first waste discharge pipe (2).

10. The fluid system according to any one of claims 1, 2, 5 and 6, characterized in that The driving module (200) is in communication with the fluid container (100) via a first preparation pipe (3), and the fluid in the fluid container (100) can enter the driving module (200) via the first preparation pipe (3).

11. The fluid system according to any one of claims 1, 2, 5 and 6, characterized in that The driving module (200) is in communication with the waste container (700) via a second preparation pipe (4), and the fluid in the driving module (200) can enter the waste container (700) via the second preparation pipe (4).

12. The fluid system according to any one of claims 1, 2, 5 and 6, characterized in that The flow pool module (300) is connected to the driving module (200) via a bypass pipe (13), and the fluid in the flow pool module (300) can enter the bypass pipe (13) for temporary storage.

13. The fluid system according to any one of claims 1, 2, 5, 6, 8 and 9, characterized in that The conversion module (400) is a two-position six-way solenoid valve, a two-position six-way conversion valve, or a two-position six-way reversing valve.

14. The fluid system according to any one of claims 1, 2, 5, 6, 8 and 9, characterized in that: The conversion module (400) includes a valve, and the valve includes: A stator (410), wherein the stator (410) has an interface 1 (a), an interface 2 (b), an interface 3 (c), an interface 4 (d), an interface 5 (e), an interface 6 (f), an interface 41 (d'), an interface 51 (e'), and an interface 61 (f'); a rotor (420), the rotor (420) having a first channel (421), a second channel (422), a third channel (423), and a fourth channel (424); the stator (410) and the rotor (420) are rotatably connected, and the rotor (420) can rotate to a first position and a second position; When the rotor (420) is located at the first position, the conversion module (400) is in the first state, the interface 1 (a) is connected to the interface 2 (b) through the first channel (421), the interface 3 (c) is connected to the interface 4 (d) through the second channel (422), the interface 5 (e) is connected to the interface 6 (f) through the third channel (423), and the interface 51 (e′) is connected to the interface 61 (f′) through the fourth channel (424); When the rotor (420) is located at the second position, the conversion module (400) is in the second state, the interface 6 (f) is connected to the interface 1 (a) through the first channel (421), the interface 2 (b) is connected to the interface 3 (c) through the second channel (422), the interface 4 (d) is connected to the interface 5 (e) through the third channel (423), and the interface 41 (d′) is connected to the interface 51 (e′) through the fourth channel (424).

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