A fluid transport system

Abstract

This utility model relates to the field of fluid technology and discloses a fluid delivery system. The fluid delivery system includes a fluid container, a selection valve assembly, a switching valve assembly, a storage module, a power module, a flow cell module, and a waste liquid container. Specifically, the fluid container includes multiple cavities for storing reagents; the selection valve assembly is connected to the multiple cavities; the switching valve assembly is connected to the selection valve assembly; the storage module includes at least two storage containers, one end of which is connected to the switching valve assembly; the power module is connected to the other end of the multiple storage containers and can independently drive bidirectional flow of fluid within any storage container; the flow cell module is used to detect reagents, and its inlet is connected to the switching valve assembly; the outlet of the flow cell module is connected to the waste liquid container; the storage container can be connected to or disconnected from the selection valve assembly or the flow cell module via the switching valve assembly.

Description

Technical Field

[0001] This utility model relates to the field of fluid technology, and in particular to a fluid transport system. Background Technology

[0002] Next-generation sequencing (NGS), also known as second-generation sequencing, is currently the most widely used gene sequencing method. NGS sequencers use flow cell modules as test carriers, fixing the target library onto the inner surface of the flow cell module. A fluid delivery system then introduces different reagents according to a predetermined time sequence for reaction and sampling analysis.

[0003] In existing technologies, a selection valve is installed upstream of the flow cell module, and a power module is installed downstream. The power module generates negative pressure, and the selection valve's working principle allows for the sequential selection of various fluids. However, on the one hand, using negative pressure to adsorb reagents results in a low reagent flow rate, leading to low detection efficiency; on the other hand, the selection valve and the flow cell module are connected by a pipeline, which is a common pipeline shared by all fluids. Therefore, fluid replacement within the flow cell module and this common pipeline must be considered. Especially when the overall instrument design results in a long common pipeline, significant time will be wasted during fluid replacement, further reducing detection efficiency.

[0004] Therefore, there is an urgent need for a fluid transport system to solve the aforementioned problems. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide a fluid delivery system that solves the problem of low reagent delivery rate leading to low detection efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] On the one hand, a fluid transport system is provided, comprising:

[0008] A fluid container comprising multiple cavities for storing reagents;

[0009] Select valve assembly, which is connected to multiple said cavities;

[0010] A switching valve assembly, which is connected to the selection valve assembly;

[0011] A storage module comprising at least two storage containers, one end of each of the at least two storage containers being connected to the switching valve assembly;

[0012] A power module, which is connected to the other end of the plurality of storage containers, is capable of independently driving bidirectional flow of fluid within any of the storage containers;

[0013] A flow cell module for detecting the reagent, wherein the inlet of the flow cell module is connected to the switching valve assembly;

[0014] Waste liquid container, the outlet of the flow tank module is connected to the waste liquid container;

[0015] The storage container can be connected to or disconnected from the selection valve group or the flow pool module via the switching valve group.

[0016] As a preferred technical solution for a fluid delivery system, the power module includes a filler container and multiple pump bodies, with each pump body corresponding to a storage container, and the pump bodies respectively connected to the filler container and the storage container.

[0017] As a preferred technical solution for a fluid delivery system, the power module includes a filler container, a pump body, and a valve head connected in sequence, wherein the valve head can be selectively connected to any of the storage containers.

[0018] As a preferred technical solution for a fluid transport system, the pump body is connected to the waste liquid container.

[0019] As a preferred technical solution for a fluid transport system, the selection valve assembly is connected to the waste liquid container.

[0020] As a preferred technical solution for a fluid transport system, the flow tank module includes at least two flow tank channels arranged in parallel, the inlet of any flow tank channel is connected to a valve body, the inlet of the flow tank channel is connected to the switching valve group, and the outlet of the flow tank channel is connected to the waste liquid container.

[0021] As a preferred technical solution for a fluid transport system, the switching valve group includes a rotary valve; or the switching valve group includes a solenoid valve.

[0022] As a preferred technical solution for a fluid transport system, the switching valve group includes four 2-position 3-way solenoid valves connected in sequence, and there are two pump bodies. The first 2-position 3-way solenoid valve is connected to the selection valve group, the third 2-position 3-way solenoid valve is connected to the flow pool module, and the second and fourth 2-position 3-way solenoid valves are respectively connected to the two pump bodies.

[0023] As a preferred technical solution for a fluid delivery system, the switching valve group includes two rotary valves and multiple solenoid valves. The solenoid valves correspond one-to-one with the pump body and are interconnected. One rotary valve is connected to the selection valve group, and the other rotary valve is connected to the flow pool module. Each solenoid valve is connected to the two rotary valves respectively.

[0024] As a preferred technical solution for a fluid transport system, the pump body is a plunger pump; or

[0025] The pump body is a diaphragm pump; or

[0026] The pump body is a centrifugal pump; or

[0027] The pump body is an injection pump.

[0028] The beneficial effects of this utility model are as follows:

[0029] This invention provides a fluid delivery system, which includes a reagent extraction state and a reagent detection state. When in the reagent extraction state, the corresponding storage container is connected to the selection valve group and isolated from the flow cell module through a switching valve group. The power module generates negative pressure, and the reagent in the fluid container can flow through the selection valve group and the switching valve group to the storage container for storage. When in the reagent detection state, the corresponding storage container is connected to the flow cell module and isolated from the selection valve group through a switching valve group. The power module generates positive pressure, and the reagent stored in the storage container can flow through the switching valve group to the flow cell module. After the flow cell module completes the reagent detection, it discharges through a waste liquid container. On the one hand, the reagents in the flow cell are delivered under positive pressure, allowing the fluid delivery system to take advantage of the high pressure of the positive pressure system to replace the fluid in the flow cell more quickly, thereby improving the detection rate of the reagents. On the other hand, since the multiple storage containers are independent of each other, one storage container can be in the reagent extraction state while the other storage container is in the reagent detection state. The reagent extraction state and the reagent detection state can be carried out simultaneously, which greatly improves the fluid replacement efficiency in the common pipeline and also ensures the flexibility of the timing of the fluid delivery system. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the fluid transport system provided in a specific embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the fluid transport system provided in a specific embodiment of this utility model;

[0033] Figure 3 This is a schematic diagram of the fluid transport system provided in a specific embodiment two of this utility model;

[0034] Figure 4 This is a schematic diagram of the fluid transport system provided in the third specific embodiment of this utility model;

[0035] Figure 5 This is a schematic diagram of the fluid transport system provided in the fourth specific embodiment of this utility model;

[0036] Figure 6 This is a schematic diagram of the fluid transport system provided in specific embodiment five of this utility model;

[0037] Figure 7 This is a schematic diagram of the fluid transport system provided in the sixth specific embodiment of this utility model.

[0038] The markings in the image are as follows:

[0039] 1. Fluid container;

[0040] 2. Select the valve assembly;

[0041] 3. Switching valve assembly; 31. Rotary valve; 32. Solenoid valve;

[0042] 4. Storage module; 41. Storage container;

[0043] 5. Power module; 51. Pump body; 52. Filler container;

[0044] 6. Flow cell module; 61. Flow cell channel; 62. Valve body;

[0045] 7. Waste liquid container. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0047] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0050] Example 1

[0051] like Figure 1 As shown, this embodiment provides a fluid delivery system, which includes a fluid container 1, a selection valve group 2, a switching valve group 3, a storage module 4, a power module 5, a flow cell module 6, and a waste liquid container 7. Specifically, the fluid container 1 includes multiple cavities for storing reagents; the selection valve group 2 is connected to the multiple cavities; the switching valve group 3 is connected to the selection valve group 2; the storage module 4 includes at least two storage containers 41, one end of which is connected to the switching valve group 3; the power module 5 is connected to the other end of the multiple storage containers 41, and the power module 5 can independently drive the fluid in any storage container 41 to flow bidirectionally; the flow cell module 6 is used to detect reagents, and the inlet of the flow cell module 6 is connected to the switching valve group 3; the outlet of the flow cell module 6 is connected to the waste liquid container 7; the storage container 41 can be connected to or disconnected from the selection valve group 2 or the flow cell module 6 through the switching valve group 3.

[0052] The fluid delivery system includes a reagent extraction state and a reagent detection state. When in the reagent extraction state, the corresponding storage container 41 is connected to the selection valve group 2 through the switching valve group 3 and isolated from the flow cell module 6. The power module 5 generates negative pressure, and the reagent in the fluid container 1 can flow through the selection valve group 2 and the switching valve group 3 to the storage container 41 for storage. When in the reagent detection state, the corresponding storage container 41 is connected to the flow cell module 6 through the switching valve group 3 and isolated from the selection valve group 2. The power module 5 generates positive pressure, and the reagent stored in the storage container 41 can flow through the switching valve group 3 to the flow cell module 6. After the flow cell module 6 completes the reagent detection, it is discharged through the waste liquid container 7. On the one hand, the reagents in the flow cell are delivered under positive pressure, allowing the fluid delivery system to take advantage of the high pressure of the positive pressure system to replace the fluid in the flow cell more quickly, thereby improving the detection rate of the reagents. On the other hand, since the multiple storage containers 41 are independent of each other, one storage container 41 can be in the reagent extraction state while the other storage container 41 can be in the reagent detection state. The reagent extraction state and the reagent detection state can be carried out simultaneously, which greatly improves the fluid replacement efficiency in the common pipeline and also ensures the flexibility of the timing of the fluid delivery system.

[0053] In this embodiment, the switching valve group 3 ensures that each storage container 41 of the storage module 4 maintains one of the following three states: state one is connected to the flow pool module 6, state two is connected to the selection valve group 2, and state three is not connected to either the flow pool module 6 or the selection valve group 2. The switching valve group 3 includes a rotary valve 31; or the switching valve group 3 includes a solenoid valve 32. For example, the switching valve group 3 is a 2-position 4-way rotary valve, a 2-position 4-way solenoid valve, or a module with equivalent switching function composed of multiple 2-position 2-way solenoid valves and a fluid manifold module; the selection valve group 2 can be a rotary valve of the selection valve type, and the selection valve group 2 can be selectively connected to any cavity, for example, an 8-position 9-way rotary valve, a 12-position 13-way rotary valve, a 24-position 25-way rotary valve, a 28-position 29-way rotary valve, or a module with equivalent switching function composed of multiple 2-position 2-way solenoid valves and a fluid manifold module;

[0054] In this embodiment, the power module 5 includes a filler container 52 and multiple pump bodies 51. Each pump body 51 corresponds one-to-one with a storage container 41, enabling each pump body 51 to independently drive the forward or reverse flow of fluid within its corresponding storage container 41. The pump bodies 51 are connected to both the filler container 52 and the storage containers 41. The filler in the filler container 52 generates positive pressure, driving the forward flow of fluid within the corresponding storage container 41. Furthermore, when cleaning the fluid delivery system is required, the filler can be used as a cleaning agent. The filler can be pure water or an inert liquid such as sodium hypochlorite.

[0055] In other embodiments, the power module 5 includes a filler container 52, a pump body 51, and a valve head connected in sequence. The valve head can be selectively connected to any storage container 41. The valve head has multiple interfaces, and the multiple storage containers 41 are respectively connected to the multiple interfaces. During operation, the valve head only controls one interface to be connected, thereby controlling the corresponding storage container 41 through the pump body 51, while the remaining storage containers 41 are in a standby state, reducing the number of pump bodies 51 and lowering costs.

[0056] In this embodiment, the pump body 51 is a plunger pump; or the pump body 51 is a diaphragm pump; or the pump body 51 is a centrifugal pump; or the pump body 51 is a syringe pump.

[0057] Preferably, the pump body 51 is connected to the waste liquid container 7. When the pump body 51 is a diaphragm pump, when the pump body 51 draws fluid from the storage container 41, the fluid drawn by the pump body 51 can be discharged through the waste liquid container 7. When the pump body 51 pushes fluid from the storage container 41 with positive pressure, the filler container 52 provides positive pressure. When the pump body 51 is a plunger pump, the excess fluid drawn by the pump body 51 can be discharged through the waste liquid container 7. When the pump body 51 pushes fluid from the storage container 41 with positive pressure, the filler container 52 provides positive pressure or replenishes the liquid volume required by the plunger pump.

[0058] Preferably, the selector valve assembly 2 is connected to the waste liquid container 7. When a storage container 41 completes reagent extraction in the reagent extraction state, the common pipeline between the switching valve body 62 and the selector valve body 62 needs to be cleaned. At this time, the next storage container 41 switches to the selector valve body 62 via the switching valve body 62. The filler container 52 delivers filler under positive pressure through the pump body 51. The filler enters the waste liquid container 7 via the storage container 41, the switching valve body 62, and the selector valve body 62, which can clean the common pipeline between the switching valve body 62 and the selector valve body 62. Positive pressure cleaning is highly efficient. Furthermore, when the storage container 41 aspirates reagent, the common pipeline between the switching valve body 62 and the selector valve body 62 is in a clean state. Compared with the length of the common pipeline between the fluid container 1 and the flow cell module 6, this embodiment only needs to consider the replacement ratio of the pipeline between the storage container 41 and the flow cell module 6, reducing the length of the common pipeline that needs to be flushed and reducing reagent waste.

[0059] In this embodiment, the flow cell module 6 includes a flow cell channel 61. In other embodiments, the flow cell module 6 includes at least two flow cell channels 61 connected in parallel. The inlet of any flow cell channel 61 is connected to a valve body 62, the inlet of the flow cell channel 61 is connected to a switching valve group 3, and the outlet of the flow cell channel 61 is connected to a waste liquid container 7. The valve body 62 can control whether the fluid in the switching valve group 3 flows to the flow cell channel 61. By setting at least two flow cell channels 61 connected in parallel, multi-sample detection can be performed.

[0060] In this embodiment, one interface of the selector valve group 2 is connected to the air. Before aspirating the reagent, the selector valve group 2 first aspirates a section of air to be used as an isolation reagent.

[0061] This embodiment also provides a method for operating the fluid transport system, as detailed below:

[0062] When a storage container 41 needs to aspirate reagents, the fluid delivery system switches the storage container 41 to the reagent extraction state; the power module 5 drives the filler into the switching valve group 3 and the selection valve group 2 and discharges it through the waste liquid container 7, thus cleaning the pipelines of the storage container 41, the switching valve group 3 and the selection valve group 2.

[0063] Then the power module 5 performs suction. At this time, the selection valve group 2 is switched to be connected to air. After suctioning a section of air, the selection valve group 2 is switched to be connected to the corresponding reagent. The power module 5 continues to suction. The reagent enters the storage container 41 through the selection valve group 2 and the switching valve group 3. At the same time, it is discharged as a cleaning filler through the pump body 51 and the waste liquid container 7.

[0064] Then the fluid delivery system switches the storage container 41 to the reagent detection state, and the power module 5 delivers the reagent under positive pressure to the flow cell module 6. After the flow cell module 6 completes the reagent detection, it is discharged through the waste liquid container 7.

[0065] Once the reagent testing is complete, the fluid delivery system switches the storage container 41 to the reagent extraction state. The selection valve group 2 is connected to the cavity, and the power module 5 drives the filler to enter the switching valve group 3, the selection valve group 2, and the fluid container 1 for cleaning. The storage container 41, the switching valve group 3, and the selection valve group 2 are then cleaned under positive pressure.

[0066] This embodiment allows the fluid delivery system to utilize the high pressure of a positive pressure system, enabling faster fluid replacement in the flow cell and also increasing the speed of pipeline cleaning. While the instrument is transporting samples or reagents, it can also perform deep cleaning on portions of the fluid delivery system's pipelines in turn, reducing cross-contamination and reagent residue caused by transporting different reagents through the instrument's pipelines.

[0067] In this embodiment, as Figure 1 and Figure 2 As shown, the fluid delivery system includes a flow pool channel 61, a switching valve group 3 which is a 2-position 4-way rotary valve, a selection valve group 2 which is a 24-position 25-way rotary valve, and a power module 5 which consists of two injection pumps. The injection pumps have 3-way non-distributed valve heads. One port of each injection pump is connected to the filling container 52 of the power module 5, and the other port is connected to the 2-position 4-way rotary valve through a pipe, which serves as the storage container 41.

[0068] This fluid delivery system utilizes a 2-position 4-way rotary valve to control the fluid flow path. The valve has four ports, numbered a, b, c, and d clockwise. Port a connects to selector valve group 2, port b connects to one syringe pump, port c connects to flow cell module 6, and port d connects to another syringe pump. The rotary valve 31 can be switched between two states: State 1: ports a and b are connected, and ports c and d are also connected; State 2: ports a and d are connected, and ports b and c are also connected.

[0069] Example 2

[0070] This embodiment provides a fluid transport system. The structure of the fluid transport system provided in this embodiment is basically the same as that in Embodiment 1, with only some differences. This embodiment will not describe the structure that is the same as that in Embodiment 1 again.

[0071] like Figure 1 and Figure 3 As shown, this embodiment is provided with one flow tank channel 61, the switching valve group 3 is a 2-position 4-way rotary valve, the selection valve group 2 is a 24-position 25-way rotary valve, the power module 5 is two injection pumps, the valve heads of the injection pumps are 3-way distributed valve heads, one port of each injection pump is connected to the filling container 52 of the power module 5, another port is connected to the 2-position 4-way rotary valve through a pipe, the pipe is used as a storage container 41, and the third port is connected to the waste liquid container 7.

[0072] This fluid delivery system utilizes a 2-position 4-way rotary valve to control the fluid flow path through state switching. The 2-position 4-way rotary valve has four ports, numbered a, b, c, and d clockwise. Port a connects to selector valve group 2, port b connects to one syringe pump, port c connects to flow cell module 6, and port d connects to another syringe pump. The rotary valve 31 can be switched between two states: State 1: ports a and b are connected, and ports c and d are also connected; State 2: ports a and d are connected, and ports b and c are also connected.

[0073] Example 3

[0074] This embodiment provides a fluid transport system. The structure of the fluid transport system provided in this embodiment is basically the same as that in Embodiment 1, with only some differences. This embodiment will not describe the structure that is the same as that in Embodiment 1 again.

[0075] like Figure 1 and Figure 4 As shown, this embodiment is provided with one flow cell channel 61, the switching valve group 3 is a 2-position 4-way solenoid valve, the selection valve group 2 is a 24-position 25-way rotary valve, the power module 5 is two injection pumps, the valve heads of the injection pumps are 3-way non-distributed valve heads, one port of each injection pump is connected to the filling container 52 of the power module 5, and the other port is connected to the 2-position 4-way solenoid valve through a pipe, with the pipe serving as the storage container 41.

[0076] This fluid delivery system utilizes a 2-position 4-way solenoid valve to control the fluid flow path through state switching. The 2-position 4-way solenoid valve has four ports, numbered a, b, c, and d clockwise. Port a connects to selector valve group 2, port b connects to one syringe pump, port c connects to flow cell module 6, and port d connects to another syringe pump. The rotary valve 31 can be switched between two states: State 1: ports a and b are connected, and ports c and d are also connected; State 2: ports a and d are connected, and ports b and c are also connected.

[0077] Example 4

[0078] This embodiment provides a fluid transport system. The structure of the fluid transport system provided in this embodiment is basically the same as that in Embodiment 1, with only some differences. This embodiment will not describe the structure that is the same as that in Embodiment 1 again.

[0079] like Figure 1 and Figure 5 As shown, this embodiment is provided with two flow pool channels 61. Each flow pool channel 61 has a 2-position 2-way solenoid valve as a switch in front of its inlet. The switching valve group 3 is a 2-position 4-way rotary valve, and the selection valve group 2 is a 24-position 25-way rotary valve. The power module 5 consists of two injection pumps. The valve heads of the injection pumps are 3-way non-distributed valve heads. One port of each injection pump is connected to the filling container 52 of the power module 5, and the other port is connected to the 2-position 4-way rotary valve through a pipe, which serves as the storage container 41.

[0080] This fluid delivery system utilizes a 2-position 4-way rotary valve to control the fluid flow path through state switching. The 2-position 4-way rotary valve has four ports, numbered a, b, c, and d clockwise. Port a connects to selector valve group 2, port b connects to one syringe pump, port c connects to flow cell module 6, and port d connects to another syringe pump. The rotary valve 31 can be switched between two states: State 1: ports a and b are connected, and ports c and d are also connected; State 2: ports a and d are connected, and ports b and c are also connected.

[0081] Example 5

[0082] This embodiment provides a fluid transport system. The structure of the fluid transport system provided in this embodiment is basically the same as that in Embodiment 1, with only some differences. This embodiment will not describe the structure that is the same as that in Embodiment 1 again.

[0083] like Figure 1 and Figure 6 As shown, in this embodiment, the switching valve group 3 includes four 2-position 3-way solenoid valves connected in sequence, and there are two pump bodies 51. The first 2-position 3-way solenoid valve is connected to the selection valve group 2, the third 2-position 3-way solenoid valve is connected to the flow pool module 6, and the second and fourth 2-position 3-way solenoid valves are respectively connected to the two pump bodies 51.

[0084] Specifically, this embodiment includes a flow pool channel 61, a switching valve group 3 consisting of four 2-position 3-way solenoid valves, a selection valve group 2 consisting of a 24-position 25-way rotary valve, a power module 5 consisting of two injection pumps, each injection pump having a 3-way non-distributed valve head. One port of each injection pump is connected to the filling container 52 of the power module 5, and the other port is connected to a 2-position 3-way solenoid valve via a pipe, which serves as a storage container 41.

[0085] The switching valve group 3 consists of four 2-position 3-way solenoid valves. These four 2-position 3-way solenoid valves are connected to the 2-position 3-way solenoid valve 2a of the selection valve group 2 via a common interface, and are numbered 2b, 2c, and 2d in counterclockwise order. The pipe between 2a and 2b is 2a1, the common pipe between 2a and 2d is 2a2, the common pipe between 2c and 2b is 2c1, and the common pipe between 2c and 2d is 2c2. The two injection pumps of the power module 5 are connected to the common interface of 2b and the common interface of 2d respectively via pipes.

[0086] This fluid delivery system uses four 2-position 3-way solenoid valves to control the fluid flow by switching their states. This combination can be switched to two states:

[0087] State 1: The common interface of 2a and the common interface of 2b are connected through pipe 2a1, while the common interface of 2c and the common interface of 2d are connected through pipe 2c2.

[0088] State 2: The common interfaces of 2a and 2d are connected through pipe 2a2, while the common interfaces of 2c and 2b are connected through pipe 2c1.

[0089] Example 6

[0090] This embodiment provides a fluid transport system. The structure of the fluid transport system provided in this embodiment is basically the same as that in Embodiment 1, with only some differences. This embodiment will not describe the structure that is the same as that in Embodiment 1 again.

[0091] like Figure 1 and Figure 7 As shown, in this embodiment, the switching valve group 3 includes two rotary valves 31 and multiple solenoid valves 32. The solenoid valves 32 and the pump body 51 are in one-to-one correspondence and interconnected. One rotary valve 31 is connected to the selection valve group 2, and the other rotary valve 31 is connected to the flow pool module 6. Any solenoid valve 32 is connected to the two rotary valves 31 respectively.

[0092] Specifically, this embodiment includes a flow pool channel 61, a switching valve group 3 consisting of three 2-position 3-way solenoid valves and two 3-position 4-way rotary valves, a selection valve group 2 consisting of a 24-position 25-way rotary valve, a power module 5 consisting of three injection pumps, each injection pump having a 3-way non-distributed valve head. One port of each injection pump is connected to the filling container 52 of the power module 5, and the other port is connected to the common port of a 2-position 3-way solenoid valve via a pipe, which serves as a storage container 41.

[0093] Each syringe pump corresponds to one 2-position 3-way solenoid valve, which are labeled 2b, 2c, and 2d from bottom to top. The two 3-position 4-way rotary valves are labeled 2a and 2e. Specifically, 2a is the 3-position 4-way rotary valve connected to valve group 2 via a common interface, and 2e is the 3-position 4-way rotary valve connected to the flow cell via a common interface. The common pipes between 2a and 2b, 2a and 2c, and 2a and 2d are 2a1, 2a2, and 2a3, respectively. The common pipes between 2e and 2b, 2e and 2c, and 2e and 2d are 2e1, 2e2, and 2e3, respectively.

[0094] This fluid transport system uses a valve group consisting of two 3-position 4-way rotary valves and three 2-position 3-way solenoid valves to control the fluid flow. This switching valve group 3 can generate six states:

[0095] State 1: The common interface of 2a - 2a1 - 2b is connected, and at the same time the common interface of 2e - 2e2 - 2c - 2c is connected;

[0096] State 2: The common interface of 2a-2a1-2b is connected, and at the same time the common interface of 2e-2e3-2d-2d is connected;

[0097] State 3: The common interface of 2a-2a2-2c is connected, and at the same time the common interface of 2e-2e1-2b-2b is connected;

[0098] State 4: The public interface of 2a-2a2-2c is connected, and at the same time the public interface of 2e-2e3-2d-2d is connected;

[0099] State 5: The public interface of 2a-2a3-2d is connected, and at the same time the public interface of 2e-2e1-2b-2b is connected;

[0100] State 6: The public interface of 2a-2a3-2d is connected, and the public interface of 2e-2e2-2c-2c is also connected.

[0101] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A fluid delivery system, characterized by, include: A fluid container (1) comprising multiple cavities for storing reagents; Select valve assembly (2), which is connected to multiple said cavities; Switching valve group (3), which is connected to the selection valve group (2); The storage module (4) includes at least two storage containers (41), one end of each of the at least two storage containers (41) being connected to the switching valve group (3); A power module (5) is connected to the other end of the plurality of storage containers (41), and the power module (5) is capable of independently driving the bidirectional flow of fluid in any of the storage containers (41); A flow cell module (6) is used to detect the reagent, and the inlet of the flow cell module (6) is connected to the switching valve group (3); Waste liquid container (7), the outlet of the flow tank module (6) is connected to the waste liquid container (7); The storage container (41) can be connected to or disconnected from the selection valve group (2) or the flow pool module (6) via the switching valve group (3).

2. The fluid delivery system of claim 1, wherein, The power module (5) includes a filler container (52) and a plurality of pump bodies (51), with the plurality of pump bodies (51) corresponding one-to-one with the plurality of storage containers (41), and the pump bodies (51) being connected to the filler container (52) and the storage containers (41) respectively.

3. The fluid transport system according to claim 1, characterized in that, The power module (5) includes a filler container (52), a pump body (51), and a valve head connected in sequence, the valve head being selectively connected to any of the storage containers (41).

4. The fluid transport system according to claim 2, characterized in that, The pump body (51) is connected to the waste liquid container (7).

5. The fluid transport system according to claim 2, characterized in that, The selector valve assembly (2) is connected to the waste liquid container (7).

6. The fluid transport system according to claim 1, characterized in that, The flow pool module (6) includes at least two flow pool channels (61) arranged in parallel. The inlet of any flow pool channel (61) is connected to the valve body (62), the inlet of the flow pool channel (61) is connected to the switching valve group (3), and the outlet of the flow pool channel (61) is connected to the waste liquid container (7).

7. The fluid transport system according to any one of claims 1-6, characterized in that, The switching valve assembly (3) includes a rotary valve (31); or The switching valve group (3) includes a solenoid valve (32).

8. The fluid transport system according to claim 2, characterized in that, The switching valve group (3) includes four 2-position 3-way solenoid valves connected in sequence. There are two pump bodies (51). The first 2-position 3-way solenoid valve is connected to the selection valve group (2), the third 2-position 3-way solenoid valve is connected to the flow pool module (6), and the second and fourth 2-position 3-way solenoid valves are respectively connected to the two pump bodies (51).

9. The fluid transport system according to claim 2, characterized in that, The switching valve group (3) includes two rotary valves (31) and multiple solenoid valves (32). The solenoid valves (32) correspond one-to-one with the pump body (51) and are interconnected. One rotary valve (31) is connected to the selection valve group (2), and the other rotary valve (31) is connected to the flow pool module (6). Any one of the solenoid valves (32) is connected to the two rotary valves (31).

10. The fluid transport system according to claim 2, characterized in that, The pump body (51) is a plunger pump; or The pump body (51) is a diaphragm pump; or The pump body (51) is a centrifugal pump; or The pump body (51) is an injection pump.

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