CN219911849U - Rotary valve and fluid path system - Google Patents

Abstract

The utility model discloses a rotary valve and a liquid path system. The rotary valve is configured to rotate between a first valve position and a second valve position, the rotary valve being provided with a first common port, a second common port, a plurality of connection ports, a first communication groove and a second communication groove, the first common port being in communication with the connection ports through the first communication groove with the rotary valve in the first valve position; the second common port communicates with the connection port through the second communication groove with the rotary valve in the second valve position. By configuring the rotary valve to rotate between the first valve position and the second valve position, the rotary valve can realize that the first common port is communicated with the connecting port through the first communication groove and the second common port is communicated with the connecting port through the second communication groove under different position conditions, so that the rotary valve integrates a three-way valve function and has two common ports, a liquid path system is simplified, and the consumption of reagents is reduced.

Description

Rotary valve and fluid path system

Technical Field

The utility model relates to the technical field of machinery and fluid, in particular to a rotary valve and a liquid path system.

Background

In order to meet the functional requirement, the sequencer needs to add a three-way electromagnetic valve in a common pipeline of the fluid system, but the electromagnetic valve can increase the length of the common pipeline to increase the consumption of reagents and reduce the reliability of the system.

Therefore, a rotary valve is needed to be designed, which can integrate the three-way valve function and has two common ports based on the original function, thereby simplifying the liquid path system and reducing the consumption of reagents.

Disclosure of Invention

The utility model provides a rotary valve and a liquid path system.

The rotary valve of an embodiment of the present utility model is configured to rotate between a first valve position and a second valve position, the rotary valve being provided with a first common port, a second common port, a plurality of connection ports, a first communication groove and a second communication groove,

the first common port communicates with the connection port through the first communication groove with the rotary valve in the first valve position;

the second common port communicates with the connection port through the second communication groove with the rotary valve in the second valve position.

In the rotary valve provided by the embodiment of the utility model, the rotary valve is configured to rotate between the first valve position and the second valve position, and under the condition that the rotary valve is at different positions, the first common port and the connecting port are communicated through the first communication groove, and the second common port and the connecting port are communicated through the second communication groove, so that the rotary valve integrates a three-way valve function and has two common ports, a liquid path system is simplified, and the consumption of reagents is reduced.

In some embodiments, the rotary valve includes a stator provided with the first common port, the second common port, the plurality of connection ports, and at least a portion of the first communication groove, and a rotor provided opposite the stator provided with at least a portion of the second communication groove.

In some embodiments, the first communication slot includes a first slot and a second slot that are communicable, the first slot and the second slot being provided to the stator and the rotor, respectively.

In some embodiments, the first slot has two ends, one end of the first slot communicates with the first common port and the other end communicates with the second slot, the second slot has two ends, and one end of the second slot communicates with the first slot and the other end selectively communicates with one of the connection ports.

In some embodiments, the stator includes first and second opposing end faces, the rotor includes third and fourth opposing end faces, the second and third end faces are in contact, the first slot is formed in the first end face, and the second slot is formed in the third end face.

In some embodiments, the second communication slot has two ends, one end of the second communication slot communicates with the second common port, and the other end selectively communicates with one of the connection ports.

In some embodiments, the stator includes first and second opposite end surfaces, the rotor includes third and fourth opposite end surfaces, the second and third end surfaces are in contact, and the second communication slot is formed in the third end surface.

In some embodiments, the plurality of connection ports are disposed around the second common port.

In some embodiments, the rotary valve has a central axis, the plurality of connection ports are arranged at intervals on a circular plane with the central axis as an axis, and the second common port is located on the central axis.

In some embodiments, the plurality of connection ports and the first common port lie on the same circular plane.

In certain embodiments, the plurality of connection ports are arranged at intervals along a circumferential direction of the stator or the rotor.

In certain embodiments, the rotary valve includes a valve body in which the stator and the rotor are both housed.

In some embodiments, the rotary valve includes a valve cover covering the stator and disposed on the valve body, the valve cover having a first interface in communication with the first common port, a second interface in communication with the second common port, and a plurality of third interfaces in one-to-one communication with the connection ports.

In certain embodiments, the rotary valve further comprises a drive member coupled to the rotor, the drive member disposed on the valve body, the drive member configured to drive the rotor in rotation.

In certain embodiments, the first common port is isolated from the connection port and the second common port is isolated from the connection port when the rotary valve is in the third valve position.

The fluid circuit system according to an embodiment of the present utility model includes the rotary valve according to any of the above embodiments.

In certain embodiments, the fluid path system comprises a first fluid path system, a second fluid path system, and a reaction device downstream of the rotary valve, the reaction device comprising a first unit and a second unit, the first fluid path system and the second fluid path system providing fluid to the first unit and the second unit, respectively, independently.

In some embodiments, the first unit and the second unit of the reaction device each comprise at least one fluid channel, the liquid path system comprises a syringe pump and a liquid suction pipe, the syringe pump is arranged at the downstream of the reaction device, the syringe pumps are arranged in one-to-one correspondence with the fluid channels, the syringe pumps are communicated with the corresponding fluid channels through the liquid suction pipe, and the syringe pumps are used for driving the solution in the liquid path system to flow in a specified direction.

In certain embodiments, the liquid path system comprises a waste liquid pool and a liquid discharge pipe, wherein the waste liquid pool is positioned downstream of the injection pump, the waste liquid pool and the injection pump are communicated through the liquid discharge pipe, and the waste liquid pool is used for collecting the solution after the reaction device participates in the reaction.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the present utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a rotary valve according to an embodiment of the present utility model in a disassembled configuration;

FIG. 2 is a partially exploded schematic illustration of a rotary valve according to an embodiment of the present utility model;

FIG. 3 is a partially exploded schematic illustration of a rotary valve according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a stator according to an embodiment of the present utility model at one view angle;

FIG. 5 is a schematic structural view of a rotor according to an embodiment of the present utility model from one perspective;

fig. 6 is a schematic structural view of a stator according to another embodiment of the present utility model;

FIG. 7 is a schematic structural view of another perspective of a rotor according to an embodiment of the present utility model;

FIG. 8 is a schematic view of the structure of a valve body according to an embodiment of the present utility model;

FIG. 9 is a schematic structural view of a valve cover according to an embodiment of the present utility model from one perspective;

FIG. 10 is a schematic structural view of another view of a valve cover according to an embodiment of the present utility model;

FIG. 11 is a schematic view of an assembled structure of a rotary valve according to an embodiment of the present utility model;

FIG. 12 is a schematic diagram of the configuration of a fluid circuit system according to an embodiment of the present utility model;

FIG. 13 is a flow chart of a method of controlling the flow of liquid in a liquid circuit system according to an embodiment of the present utility model;

Fig. 14 is a flow chart of a method of controlling the flow of liquid in a liquid circuit system according to an embodiment of the present utility model.

Description of main reference numerals: a rotary valve 100; a first common port 10; a second common port 20; a connection port 30; a first communication groove 40; a second communication groove 50; a fluid path system 1000; a stator 60; a rotor 70; a first groove 41; a second groove 43; a first end 410 of the first slot; a second end 411 of the first slot; a first end 430 of the second slot; a second end 431 of the second slot; a first end face 61; a second end face 63; a third end face 71; a fourth end face 73; a first end 51 of the second communication slot; a second end 53 of the second communication slot; a valve body 80; a valve cover 90; a first interface 91; a second interface 92; a third interface 93; a fifth end face 94; a sixth end face 95; a first threaded bore 96; a seventh end face 81; a second screw hole 83; a first screw 101; a first top surface 85; a second top surface 87; a first positioning hole 97; a second positioning hole 65; a first positioning pin 102; a third positioning hole 98; a second positioning pin 88; a driving part 103; a fourth positioning hole 75; a positioning member 1030; a third screw hole 1031; a fourth threaded hole 89; a second screw 105; a reaction device 1010; a first unit 1011; a second unit 1012; a syringe pump 1020; a syringe 1030; a pressure sensor 1040; a second bus bar 1050; a first bus bar 1060; a reagent needle 1070; a first reagent needle 1071; a second reagent needle 1072; a third reagent needle 1073; a bypass pipe 1080; a pipette 1090; a drain tube 1001; waste liquid confluence block 1002; a waste liquid tank 1003; a first fluid path system 1100; a second fluid path system 1200; a first liquid inlet 1061; a second liquid inlet 1062; a first liquid outlet 1063; a second liquid outlet 1064; a third liquid outlet 1065; a fourth outlet 1066; a third bus bar 1300; a "Y" shaped channel 1301.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes 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 being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1, a rotary valve 100 according to an embodiment of the present utility model is configured to rotate between a first valve position and a second valve position, the rotary valve 100 being provided with a first common port 10, a second common port 20, a plurality of connection ports 30, a first communication groove 40 and a second communication groove 50, the first common port 10 being in communication with the connection ports 30 through the first communication groove 40 with the rotary valve 100 in the first valve position; with the rotary valve 100 in the second valve position, the second common port 20 communicates with the connection port 30 through the second communication groove 50.

Thus, by configuring the rotary valve 100 to rotate between the first valve position and the second valve position, the communication between the first common port 10 and the connection port 30 through the first communication groove 40 and the communication between the second common port 20 and the connection port 30 through the second communication groove 50 can be achieved with the rotary valve 100 in different positions, thereby enabling the rotary valve 100 to integrate a three-way valve function and have two common ports, simplifying the liquid path system 1000 (see fig. 12) and reducing the consumption of reagents.

Specifically, the first common port 10 may be in communication with the connection port 30 through the first communication slot 40, and the first common port 10 is shown in the present embodiment. The first common port 10 may serve as a liquid inlet or outlet to the rotary valve 100.

Alternatively, liquid may enter or exit the rotary valve 100 from the first common port 10, thereby effecting split or co-current flow. Here, the first common port 10 serves as a liquid inlet for the rotary valve 100, and liquid may enter the rotary valve 100 from the first common port 10. The shape of the first common port 10 may be a regular shape such as a circle or a polygon, or may be an irregular shape.

Similarly, the second common port 20 may be in communication with the connection port 30 through the second communication slot 50, and is shown as a second common port 20 in the present illustration. The second common port 20 may serve as a liquid inlet or outlet to the rotary valve 100. Alternatively, liquid may enter or exit the rotary valve 100 from the second common port 20, thereby effecting split or co-current flow. Here, the second common port 20 serves as a liquid inlet for the rotary valve 100, and liquid may enter the rotary valve 100 from the second common port 20. The shape of the second common port 20 may be a regular shape such as a circle, a polygon, or an irregular shape. In an embodiment of the present utility model, the second common port 20 is rounded in order to facilitate the formation, manufacture and/or connection of the second common port 20 to common piping.

In order to facilitate the arrangement of the positions of the connection ports 30, the angle between the first communication groove 40 and the second communication groove 50 may be 173.5 °, that is, the angle between the extending line segment of the first communication groove 40 over the axis of the rotary valve 100 and the extending line segment of the second communication groove 50 over the axis of the rotary valve 100. The present utility model is not limited to the angle between the first communicating groove 40 and the second communicating groove 50. Further, the positions of the first and second common ports 10 and 20 on the rotary valve 100 can be adjusted by adjusting the angle and shape between the first and second communication grooves 40 and 50.

Only one of the first common port 10 and the second common port 20 can communicate with the connection port 30 while the other port is in a blocked state. Alternatively, when the first common port 10 communicates with the connection port 30 through the first communication groove 40, the second common port 20 is in a blocked state (i.e., liquid cannot flow into the second common port 20), and when the second common port 20 communicates with the connection port 30 through the second communication groove 50, the first common port 10 is in a blocked state (i.e., liquid cannot flow into the first common port 10).

When the rotary valve 100 is rotated to the first valve position, the first common port 10 communicates with the plurality of connection ports 30 through the first communication groove 40, and at this time, the liquid enters the rotary valve 100 from the first common port 10 and flows out through the plurality of connection ports 30. When the rotary valve 100 is rotated to the second valve position, the second common port 20 communicates with the plurality of connection ports 30 through the second communication groove 50, and at this time, the liquid enters the rotary valve 100 from the second common port 20 and flows out through the plurality of connection ports 30.

Referring to fig. 1, 2 and 3, in some embodiments, the rotary valve 100 includes a stator 60 and a rotor 70 disposed opposite the stator 60, the stator 60 is provided with at least a portion of the first common port 10, the second common port 20, the plurality of connection ports 30 and the first communication slot 40, and the rotor 70 is provided with at least a portion of the second communication slot 50.

As such, during rotation of the rotor 70, the first and second connection slots 40 and 50 may communicate with the first and second common ports 10 and 20 such that liquid may enter the rotary valve 100 from the stator 60 and flow out of the rotary valve 100 from the stator 60.

The rotor 70 and the stator 60 are coaxially disposed, or, in other words, the central axis of the rotor 70 and the central axis of the stator 60 coincide, the second common port 20 may be disposed on the central axis. It will be appreciated that the rotor 70 may rotate relative to the stator 60. Further, the rotor 70 rotates relative to the stator 60 between a first valve position and a second valve position.

Notably, rotation of the rotary valve 100 between the first valve position and the second valve position, i.e., rotation of the rotor 70 of the rotary valve 100 itself, is not an integral rotation of the rotary valve 100.

At least a portion of the stator 60 provided with the first communication groove 40 means: part or all of the structure of the first communication groove 40 may be provided on the stator 60. Similarly, at least a part of the rotor 70 provided with the second communication groove 50 means that part or all of the structure of the second communication groove 50 may be provided on the rotor 70. It will be appreciated that the first communication slot 40 may be composed of different parts provided on the stator 60 and the rotor 70, and the second communication slot 50 may be composed of different parts provided on the stator 60 and the rotor 70.

Referring to fig. 1, 4 and 5, in some embodiments, the first communication slot 40 includes a first slot 41 and a second slot 43 that are communicable, and the first slot 41 and the second slot 43 are provided to the stator 60 and the rotor 70, respectively.

As such, during rotation of the rotor 70, the second groove 43 may move to a position in communication with the first groove 41, such that liquid may flow from the first groove 41 to the second groove 43.

Specifically, the first slot 41 may be concavely formed at an end surface of the stator 60 in an axial direction of the stator 60, the second slot 43 may be provided on the rotor 70 and a notch of the second slot 43 may be provided toward the stator 60. The first groove 41 and the second groove 43 may be communicated or separated during rotation of the rotor 70. For example, further, when the rotor 70 is rotated and the rotary valve 100 is in the first valve position, the first slot 41 communicates with the second slot 43.

Referring to fig. 2, 4 and 5, in some embodiments, the first slot 41 has two ends, one end of the first slot 41 communicates with the first common port 10, the other end communicates with the second slot 43, the second slot 43 has two ends, and one end of the second slot 43 communicates with the first slot 41, and the other end selectively communicates with one of the connection ports 30.

In this way, the first common port 10 can be communicated with one connection port 30 through the first groove 41 and the second groove 43.

Specifically, for convenience of function, the first groove 41 and the second groove 43 may be arc-like grooves, and the first groove 41 and the second groove 43 may be other shapes, and the specific shape and structure of the first groove 41 and the second groove 43 are not limited in the embodiment of the present utility model. The first slot 41 may include a first end 410 of the first slot 41 and a second end 411 of the first slot 41, the first end 410 of the first slot 41 may be disposed proximate to the first common port 10, and the second end 411 of the first slot 41 may be disposed distal to the first common port 10.

Similarly, the second groove 43 may include a first end 430 of the second groove 43 and a second end 431 of the second groove 43, the second end 431 of the second groove 43 being an end of the arc of the second groove 43 that communicates with one of the connection ports 30, and the second end 431 of the second groove 43 may be disposed perpendicular to the arc of the second groove 43.

When the second common port 20 is in the blocking state, the liquid flows into the rotary valve 100 through the first common port 10, flows through the first end 410 of the first slot 41 to the second end 411 of the first slot 41 along the arc of the first slot 41, flows from the second end 411 of the first slot 41 to the first end 430 of the second slot 43, flows from the first end 430 of the second slot 43 to the second end 431 of the second slot 43 along the arc of the second slot 43, flows from the second end 431 of the second slot 43 to one of the connection ports 30, and finally flows out of the stator 60.

It should be noted that the second end 431 of the second groove 43 selectively communicates with one of the connection ports 30 during rotation of the rotor 70, i.e., the second end 431 of the second groove 43 is respectively connected with a corresponding one of the connection ports 30 when the rotor 70 rotates to a different position.

Referring to fig. 4-7, in some embodiments, the stator 60 includes a first end surface 61 and a second end surface 63 that are opposite, the rotor 70 includes a third end surface 71 and a fourth end surface 73 that are opposite, the second end surface 63 is attached to the third end surface 71, the first slot 41 is formed in the first end surface 61, and the second slot 43 is formed in the third end surface 71.

In this way, the second end surface 63 and the third end surface 71 are bonded to prevent liquid leakage, and the first groove 41 and the second groove 43 are formed on the first end surface 61 and the third end surface 71, respectively, so that the first communicating groove 40 is easier to manufacture and form, and the manufacturing cost of the stator 60 and the rotor 70 can be reduced.

Specifically, the first end surface 61 is an end surface where the liquid initially flows into the stator 60, the first stator 60 and the rotor 70 are attached through the second end surface 63 and the third end surface 71, so that the liquid can flow only along the first groove 41 and the second groove 43 after entering the stator 60 and the rotor 70 portion of the rotary valve 100, the first groove 41 is formed in the first end surface 61, the notch of the first groove 41 is disposed away from the third end surface 71 of the rotor 70, the second groove 43 is formed in the third end surface 71, and the notch of the second groove 43 is disposed toward the second end surface 63 of the stator 60.

Referring to fig. 1 and 5, in some embodiments, the second communication groove 50 has two ends, and one end of the second communication groove 50 communicates with the second common port 20, and the other end selectively communicates with one connection port 30.

In this way, the second communication groove 50 allows the second common port 20 to communicate with one connection port 30.

Specifically, the second communication groove 50 may be a linear groove, the second communication groove 50 may be formed at the third end face 71, and when the first common port 10 is in the blocking state, the liquid flows into the rotary valve 100 through the second common port 20, further, the liquid flows into the first end 51 of the second communication groove 50 through the second common port 20, flows into the second end 53 of the second communication groove 50 along the second communication groove 50 straight line through the first end 51 of the second communication groove 50, and finally flows into one of the connection ports 30.

It should be noted that the second end 53 of the second communication slot 50 selectively communicates with one of the connection ports 30 during rotation of the rotor 70, i.e., the second end 53 of the second communication slot 50 is respectively connected with a corresponding one of the connection ports 30 when the rotor 70 is rotated to a different position.

Referring to fig. 4-7, in some embodiments, the stator 60 includes a first end surface 61 and a second end surface 63 that are opposite to each other, the rotor 70 includes a third end surface 71 and a fourth end surface 73 that are opposite to each other, the second end surface 63 and the third end surface 71 are attached to each other, and the second communication groove 50 is formed in the third end surface 71.

In this way, the second end surface 63 and the third end surface 71 are bonded to each other, so that liquid leakage can be prevented, and the second communication groove 50 is formed in the third end surface 71, so that the manufacturing cost of the stator 60 and the rotor 70 can be reduced.

Specifically, the second communication groove 50 is concavely formed at the third end face 71 of the rotor 70, and the notch of the second communication groove 50 faces the second end face 63 in the axial direction of the stator 60.

Referring to fig. 4 and 5, in some embodiments, a plurality of connection ports 30 are disposed around the second common port 20.

As such, during rotation of the rotor 70, the second common port 20 and the plurality of connection ports 30 can be made to communicate with each other through the second communication groove 50 when the rotor 70 rotates to different positions.

Specifically, the plurality of connection ports 30 are provided on the end face of the stator 60, and penetrate through the first end face 61 and the second end face 63 in the axial direction of the stator 60. The second common port 20 may communicate with different connection ports 30 when the rotor 70 is rotated to different angles. Meanwhile, the plurality of connection ports 30 are disposed around the second common port 20 to maximize the use of the spatial structure of the stator 60, and the second common port 20 and the plurality of connection ports 30 are not interfered while realizing functions.

Referring to fig. 1, 4 and 5, in some embodiments, the rotary valve 100 has a central axis, the plurality of connection ports 30 are arranged on a circular plane with the central axis as an axis, and the second common port 20 is located on the central axis.

In this way, the connection port 30 and the second common port 20 are more easily opened.

Specifically, the connection ports 30 are arranged at intervals on a circular plane having the central axis of the rotary valve 100 as the axis, which is advantageous for shaping the connection ports 30 and the second common port 20 in manufacturing the rotary valve 100, so as to reduce the manufacturing cost of the rotary valve 100.

Referring to fig. 1 and 4, in some embodiments, the plurality of connection ports 30 and the first common port 10 lie on the same circular plane.

In this way, the rotational angles of the plurality of connection ports 30 and the first common port 10 are fixed.

Specifically, the connection port 30 and the first common port 10 are disposed on the same circular plane, such that the rotor 70 can be fixed in rotation angle during rotation, thereby making it easier for the rotary valve 100 to switch from the first valve position to the second valve position.

Referring to fig. 1, 4 and 5, in some embodiments, a plurality of connection ports 30 are arranged at intervals along the circumferential direction of the stator 60 or the rotor 70.

In this way, the arrangement mode of the connection ports 30 can reasonably utilize the space structure of the stator 60, so that the connection ports 30 are prevented from being concentrated, and the volume of the stator 60 can be reduced.

Specifically, the plurality of connection ports 30 are arranged at regular intervals along the circumferential direction of the stator 60 or the rotor 70, or, in other words, the intervals between two adjacent connection ports 30 are equal along the circumferential direction of the stator 60 or the rotor 70. Meanwhile, the arrangement mode of the connection ports 30 enables the rotation angle of the rotor 70 to be uniform, which is beneficial to the service life of the rotor 70 and the practical application experience of the rotary valve 100.

Referring to fig. 1 and 8, in some embodiments, the rotary valve 100 includes a valve body 80, with the stator 60 and the rotor 70 both housed in the valve body 80.

In this manner, the valve body 80 acts as a carrier for the rotary valve 100, and the valve body 80 may facilitate installation of the stator 60, rotor 70, and other components of the rotary valve 100.

Specifically, the valve body 80 may be made of a metal or the like, thereby improving the strength of the valve body 80, so that the valve body 80 may protect the rotor 70 and the stator 60, thereby improving the service life of the rotary valve 100. The valve body 80 has a cylindrical shape, a cuboid shape and the like, and the valve body 80 can be designed into different shapes according to actual requirements, and the embodiment of the utility model does not limit the appearance structure of the valve body 80.

Referring to fig. 1, 4, 8, 9 and 10, in some embodiments, the rotary valve 100 includes a valve cover 90, where the valve cover 90 covers the stator 60 and is disposed on the valve body 80, and the valve cover 90 has a first interface 91, a second interface 92 and a plurality of third interfaces 93, where the first interface 91 communicates with the first common port 10, the second interface 92 communicates with the second common port 20, and the third interfaces 93 communicate with the connection ports 30 in a one-to-one correspondence.

In this manner, the interface of the valve cover 90 may be connected to an external conduit so that the rotary valve 100 may control the dispensing of liquid.

Specifically, the valve cover 90 may include a fifth end surface 94 proximate the stator 60 and a sixth end surface 95 opposite the fifth end surface 94. The fifth end surface 94 of the valve cover 90 is attached to the seventh end surface 81 of the valve body 80 to form a sealing structure to prevent leakage of liquid.

The valve cover 90 may include a first threaded hole 96, and the first threaded hole 96 may be a through hole penetrating through the fifth end surface 94 and the sixth end surface 95 along the axial direction of the valve cover 90, and the first threaded hole 96 is arranged on a circular plane with the central axis of the valve cover 90 as the axis line at intervals. The valve body 80 may include a seventh end surface 81 adjacent the valve cover 90, the valve body 80 may include a second threaded bore 83, and the second threaded bore 83 may be a blind bore that is submerged into the valve body 80 from the seventh end surface 81. The second screw holes 83 may be arranged at intervals on a circular plane having the central axis of the valve body 80 as the axis. The rotary valve 100 may include a first screw 101, and the first screw 101 connects the first screw hole 96 and the second screw hole 83 such that the bonnet 90 and the valve body 80 may be detachably connected.

The valve cover 90 may include a first top surface 85 and a second top surface 87, the first top surface 85 being parallel to the sixth end surface 95, the second top surface 87 being disposed obliquely with respect to the first top surface 85. The first interface 91 and the plurality of third interfaces 93 may be disposed on the second top surface 87, the plurality of third interfaces 93 may be arranged at intervals on a circular plane with a central axis of the valve cover 90 as an axis, and the second interface 92 may be disposed on the first top surface 85. Therefore, the positions of the interfaces are dispersed, and mutual interference among the interfaces is avoided.

The first port 91 may be a threaded port, or an external pipe may be screwed to the rotary valve 100. The threaded interface not only prevents leakage of fluid from the first interface 91, but also allows the external conduit to be quickly removed from the rotary valve 100. Similarly, the second interface 92 and the third interface 93 may also be threaded interfaces.

The valve cover 90 may include a first locating hole 97, the stator 60 may include a second locating hole 65, the first locating hole 97 may be a blind hole that is submerged into the fifth end surface 94 of the valve cover 90, and the second locating hole 65 may be a blind hole that is submerged into the first end surface 61 of the stator 60. The rotary valve 100 may include a first positioning pin 102, the first positioning pin 102 being interposed in the valve cover 90 and the stator 60. The number of first positioning pins 102 may be plural, and the plurality of first positioning pins 102 may restrict the degrees of freedom of the valve cover 90 and the stator 60 such that the valve cover 90 is positioned on the stator 60.

The valve cover 90 may include a third locating hole 98, the valve body 80 may include a second locating pin 88, the third locating hole 98 may be a blind hole that is submerged into the sixth end face 95, the second locating pin 88 may protrude axially along the valve body 80 from the seventh end face 81 of the valve body 80, and the second locating pin 88 cooperates with the third locating hole 98 such that the valve cover 90 is positioned on the valve body 80.

Referring to fig. 1, 8 and 11, in some embodiments, the rotary valve 100 further includes a driving member 103 coupled to the rotor 70, the driving member 103 being disposed on the valve body 80, the driving member 103 being configured to drive the rotor 70 to rotate.

In this manner, the drive member 103 may drive the rotor 70 to rotate such that the rotor 70 may be positioned in different locations to enable the rotary valve 100 to perform different functions.

Specifically, the driving part 103 may be a motor, and a rotating portion of the motor is connected to the rotor 70. The rotor 70 may include a fourth positioning hole 75, and the driving part 103 may include a positioning member 1030, and the driving part 103 may rotate the rotor 70 through the positioning member 1030 and the fourth positioning hole 75.

The driving part 103 may include a third screw hole 1031, the valve body 80 may include an eighth end surface (not shown) facing away from the seventh end surface 81, the valve body 80 may include a fourth screw hole 89, the fourth screw hole 89 may be a through hole penetrating the seventh end surface 81 and the eighth end surface in an axial direction of the valve body 80, the rotary valve 100 may include a second screw 105, and the driving part 103 may be fixedly coupled with the valve body 80 by the second screw 105, thereby fixing a relative position between the driving part 103 and the valve body 80 and forming a sealing structure of the rotor 70, the stator 60, the valve body 80, and the valve cover 90.

It should be noted that the embodiment of the present utility model is not limited to the specific type of the hole, and the positioning hole and the threaded hole may be blind holes or through holes, and in particular, different schemes may be adopted according to the needs of practical applications.

Referring to fig. 1 and 2, in some embodiments, the first common port 10 is isolated from the connection port 30 and the second common port 20 is isolated from the connection port 30 when the rotary valve 100 is in the third valve position.

Thus, the rotary valve 100 may also perform a function of controlling the blocking of liquid in the case where the rotary valve 100 is in the third valve position.

In the present embodiment, the rotary valve 100 has three modes, that is, a mode in which the connection port 30 communicates with the first common port 10 when the rotary valve 100 is in the first valve position; a mode in which the connection port 30 and the second common port 20 communicate when the rotary valve 100 is in the second valve position; in the third valve position, the connection port 30, the first common port 10, and the second common port 20 are isolated from each other.

It is noted that the term "partition" of a plurality of ports as used herein means that the ports are not in communication with each other, or that fluid cannot flow in from one or more of the ports and out of another one or more of the ports.

Referring to fig. 12, a fluid circuit system 1000 according to an embodiment of the present utility model includes a rotary valve 100 according to any of the above embodiments.

Specifically, the liquid path system 1000 of the present utility model may include a plurality of rotary valves 100, and the plurality of rotary valves 100 may integrate a plurality of three-way valve functions to realize the functions of dividing the liquid path system 1000 in a number of multiple steps, so that the liquid path system 1000 has the advantages of reduced cost, reduced volume, reduced consumption of reagents, improved reliability, and convenience in maintenance and operation.

The liquid path system 1000 of the present utility model can realize the transportation of solutions, and the solutions can be various, including reaction solutions, biological sample solutions, buffer solutions, cleaning solutions, etc., and reagents of different reactions or different steps of the same reaction. The fluid path system 1000 may deliver the biological sample solution to the reaction device 1010 for a corresponding reaction, such as a hybridization reaction and a sequencing reaction. The reaction device 1010 is a sandwich-like structure having upper, middle and lower layers, or a structure having upper and lower layers. The upper layer is a transparent glass layer, the middle layer or the lower layer is a transparent or opaque substrate layer, and the middle layer or the lower layer is provided with fluid channels which are arranged in an array manner, can contain liquid and provide a physical space for reaction. The fluidic channel has probes (oligonucleotides) on its upper surface (lower surface of upper glass layer) or lower surface (upper surface of middle or lower layer). The biological sample solution is a solution containing the nucleic acid to be detected, and the liquid path system 1000 conveys the biological sample solution into the fluid channel of the reaction device 1010, so that the nucleic acid to be detected and at least a part of the probe are complementarily paired, i.e. hybridized, so as to fix or connect the nucleic acid to be detected on the surface of the fluid channel, so that the nucleic acid to be detected can be detected and analyzed later, for example, a sequencing reaction can be performed.

Referring to fig. 12, in some embodiments, the reaction apparatus 1010 may include a first unit 1011 and a second unit 1012, and the number of units of 1010 is not limited in the embodiments of the present utility model. Each of the first unit 1011 and the second unit 1012 includes at least one fluid passage. The number of fluid channels of the two units may be designed to be the same or different. In this embodiment, both the first unit 1011 and the second unit 1012 include two fluid channels. The fluid path system 1000 may deliver the same or different biological sample solutions to the fluid channels of the first unit 1011 and the second unit 1012 of the reaction device 1010, respectively, to perform detection and analysis on the same or different nucleic acids to be detected. Thus, the fluid path system 1000 including the reaction device 1010 facilitates improved sequencing throughput and/or simultaneous detection of multiple samples. In order to avoid mutual crosstalk when the liquid path system 1000 supplies liquid to the first unit 1011 and the second unit 1012, the liquid path system 1000 of the present utility model is designed to include the first liquid path system 1100 and the second liquid path system 1200, where the first liquid path system 1100 and the second liquid path system 1200 are independent and parallel to each other, so as to supply liquid to the first unit 1011 and the second unit 1012 respectively, and facilitate different reactions or different steps of the same reaction to the first unit 1011 and the second unit 1012, so as to implement detection analysis on the same or different nucleic acids to be detected.

Specifically, the first fluid circuit system 1100 and the second fluid circuit system 1200 each include a reagent switching system and a power system.

Wherein the reagent switching system is disposed upstream of the reaction device 1010. Specifically, the reagent switching system includes a rotary valve 100 and a first bus block 1060. The rotary valve 100 may control the sequential passage of different solutions through the first manifold block 1060 into the fluid channels of the reaction device 1010. The first manifold block 1060 includes a first liquid inlet 1061, a second liquid inlet 1062, a first liquid outlet 1063, a second liquid outlet 1064, a third liquid outlet 1065, and a fourth liquid outlet 1066. Wherein, the first liquid inlet 1061 is respectively communicated with the first liquid outlet 1063 and the second liquid outlet 1064; the second liquid inlet 1062 communicates with the third liquid outlet 1065 and the fourth liquid outlet 1066, respectively. The liquid conveyed by the first liquid path system 1100 flows into the first confluence block 1060 through the first liquid inlet 1061 by passing through the rotary valve 100 of the first liquid path system 1100, is split into two parts, and then flows out by being split from the first liquid outlet 1063 and the second liquid outlet 1064. The first liquid outlet 1063 and the second liquid outlet 1064 are respectively in communication with and in one-to-one correspondence with two fluid channels of the first unit 1011 on the reaction device 1010. After the liquid conveyed by the first liquid path system 1100 flows out from the first liquid outlet 1063 and the second liquid outlet 1064, the liquid flows into two fluid channels of the first unit 1011 respectively, so that the first liquid path system 1100 is realized to supply the first unit 1011 on the reaction device 1010 with liquid independently. The liquid conveyed by the second liquid path system 1200 flows into the first confluence block 1060 through the second liquid inlet 1062 by passing through the rotary valve 100 of the second liquid path system 1200, is split into two parts, and then flows out by being split from the third liquid outlet 1065 and the fourth liquid outlet 1066. The third liquid outlet 1065 and the fourth liquid outlet 1066 are respectively in communication with and in one-to-one correspondence with two fluid channels of the second unit 1012 on the reaction device 1010. After the liquid conveyed by the second liquid path system 1200 flows out from the third liquid outlet 1065 and the fourth liquid outlet 1066, the liquid flows into two fluid channels of the second unit 1012, so that the second liquid path system 1200 is used for independently supplying liquid to the second unit 1012 on the reaction device 1010. The first liquid path system 1100 and the second liquid path system 1200 supply liquid to the first unit 1011 and the second unit 1012 of the reaction device 1010 independently and in parallel, which is beneficial to the first unit 1011 and the second unit 1012 to perform different reactions or different steps of the same reaction, so as to realize detection and analysis of the same or different nucleic acids to be detected, and is beneficial to improving sequencing flux and/or realizing simultaneous detection of multiple samples. The number of rotary valves 100 and first manifold blocks 1060 may be plural, and the illustration is only one example and is not intended as a limitation of the rotary valves 100 and first manifold blocks 1060 in accordance with the embodiments of the present utility model.

In some embodiments, the first bus bar 1060 may be designed separately from the reaction device 1010.

In some embodiments, the first bus bar 1060 may be integrated with the reaction device 1010 on the reaction device 1010.

Referring to fig. 12, in some embodiments, a power system provides power to a fluid path system 1000 such that fluid in the fluid path system 1000 may flow.

Specifically, the power system may include a syringe pump 1020, a syringe 1030, a pressure sensor 1040, and a second manifold block 1050. A syringe pump 1020 is provided downstream of the reaction device 1010 to provide negative pressure to the liquid through the rotary valve 100 and the inflow fluid passageway.

Preferably, the number of syringe pumps 1020 is the same as the number of fluid channels of reaction apparatus 1010, such that syringe pumps 1020 are capable of independently controlling the fluid in each fluid channel of reaction apparatus 1010, facilitating fine control of the flow and/or velocity of the fluid in each fluid channel.

In addition, syringe pump 1020 is positioned downstream of reaction device 1010 and provides negative pressure to avoid fluid flow or fluid leakage within the various fluid passages within reaction device 1010. A pressure sensor 1040 is provided in the line connecting the reaction device 1010 and the syringe pump 1020, and the pressure sensor 1040 can monitor the pressure of the fluid line system 1000 and alarm when the pressure is abnormal. The second confluence block 1050 can be used to confluence the waste streams exiting the reaction device 1010.

Further, the waste liquid flows into a waste liquid confluence block 1002 and a waste liquid tank 1003 located downstream of the syringe pump 1020 through a drain pipe 1001.

The number of syringe pump 1020, syringe 1030, pressure sensor 1040, and second manifold block 1050 may be plural, and the illustration is only one illustration, and is not intended as a limitation of the syringe pump 1020, syringe 1030, pressure sensor 1040, and second manifold block 1050 in accordance with embodiments of the present utility model.

Referring to fig. 12, in some embodiments, the fluid path system 1000 of the present utility model may further include a reagent needle 1070, and the reagent needle 1070 may be used to withdraw a reaction solution, a biological sample solution, or other solutions. After the solution enters the reagent needle 1070, under the negative pressure provided by the syringe pump 1020, the solution can flow into the reaction device 1010 through the rotary valve 100 to perform corresponding reaction, and different solutions can be selected to sequentially flow into the reaction device 1010 through the rotary valve 100 to complete corresponding reaction.

The reagent needle 1070 includes a first reagent needle 1071, a second reagent needle 1072, and a third reagent needle 1073, and the number of the first reagent needle 1071, the second reagent needle 1072, and the third reagent needle 1073 is not limited, and the corresponding solutions are drawn.

Wherein the first reagent needle 1071 is in communication with the rotary valve 100 of the first fluid pathway system 1100 through tubing such that the solution withdrawn by the first reagent needle 1071 enters the first unit 1011 of the reaction apparatus 1010 through the rotary valve 100 of the first fluid pathway system 1100; the second reagent needle 1072 is in communication with the rotary valve 100 of the second fluid pathway system 1200 through tubing such that the solution withdrawn by the second reagent needle 1072 enters the second unit 1012 of the reaction device 1010 through the rotary valve 100 of the second fluid pathway system 1200; the third reagent needle 1073 communicates with the rotary valves 100 of the first and second fluid pathway systems 1100 and 1200, respectively, through the third confluence block 1300 such that the solution drawn by the third reagent needle 1073 simultaneously enters the first and second units 1011 and 1012 of the reaction apparatus 1010 through the rotary valves 100 of the first and second fluid pathway systems 1100 and 1200, respectively.

Specifically, the third manifold block 1300 is provided with a plurality of Y-shaped channels 1301 side by side in the longitudinal direction, and the Y-shaped channels 1301 may divide the solution flowing into the third manifold block 1300 into two. The "Y" shaped channel 1301 comprises a liquid inlet and two liquid outlets, the liquid inlet of the "Y" shaped channel 1301 is connected to the third reagent needle 1073 via a pipeline, and the two liquid outlets of the "Y" shaped channel 1301 are connected to the rotary valve 100 of the first liquid path system 1100 and the rotary valve 100 of the second liquid path system 1200 via pipelines, respectively.

After the solution extracted by the third reagent needle 1073 is divided into two parts by the third confluence block 1300, the solution can flow into the first unit 1011 and the second unit 1012 of the reaction device 1010 through the rotary valve 100 of the first liquid path system 1100 and the rotary valve 100 of the second liquid path system 1200, respectively, thereby realizing that the liquid path system 1000 provides the same kind of solution for the first unit 1011 and the second unit 1012 of the reaction device 1010 at the same time, and improving the liquid supply efficiency.

In certain embodiments, when the fluid circuit system 1000 supplies fluid to the first unit 1011 and the second unit 1012 through the third reagent needle 1073, the specific process includes:

first, under the action of the power system, the third reagent needle 1073 draws the solution;

Next, the solution is divided into two after passing through the third manifold block 1300;

again, the split solutions enter the first and second fluid path systems 1100 and 1200, respectively;

finally, the split solution flows into the first unit 1011 and the second unit 1012 of the reaction apparatus 1010 through the reagent switching systems of the first liquid path system 1100 and the second liquid path system 1200, respectively.

By drawing liquid through the third reagent needle 1073 while supplying liquid to the first unit 1011 and the second unit 1012, the liquid supply efficiency of the liquid path system 1000 can be improved.

In some embodiments, any one of the first reagent pins 1071 and any one of the second reagent pins 1072 may be configured to be inserted into the same memory to simultaneously or time-division withdraw the sequencing reagents stored in the memory, thereby providing the first fluid path system 1100 and the second fluid path system 1200 with different solutions, respectively, to implement different steps of the same reaction, different reactions, or the same reaction performed by the first unit 1011 and the second unit 1012, while reducing the number of memories storing the same solution, thereby making the fluid path system 1000 more compact and smaller. "sequencing reagent" refers to a reagent that is required when detecting and analyzing a nucleic acid to be detected, for example, when performing a sequencing reaction. Sequencing reagents include imaging reagents, excision reagents, and the like.

Referring to fig. 12 and 13, in another aspect of the present disclosure, there is provided a method of controlling a flow of a liquid in a liquid path system 1000, the liquid path system 1000 including a reagent needle 1070, a rotary valve 100, a bypass pipe 1080 and a syringe pump 1020, the rotary valve 100 being connected to the syringe pump 1020 through the bypass pipe 1080, the rotary valve 100 being provided with a first common port 10, a second common port 20, a plurality of connection ports 30 and a first communication groove 40, the method comprising:

s10, enabling the first common port 10 to be communicated with the connecting port 30 through the first communicating groove 40;

s20, under the action of negative pressure generated by the syringe pump 1020, the solution flows into the rotary valve 100 through the connecting port 30, then flows out through the first common port 10 of the rotary valve 100 and enters the bypass pipe 1080, and the bypass pipe 1080 connects the first common port 10 and the syringe pump 1020;

s30, the rotary valve 100 is rotated to communicate the connection port 30 with the reagent needle 1070, and the solution in the bypass tube 1080 is pushed back by the syringe pump 1020, so that the solution flows back into the rotary valve 100 through the first common port 10, flows out from the connection port 30 of the rotary valve 100, and enters the reagent needle 1070.

Referring to fig. 12 and 14, in some embodiments, the method further comprises:

S40, communicating the second common port 20 with the connection port 30 through the second communication groove 50;

s50, under the action of the negative pressure generated by the injection pump 1020, the solution flows into the rotary valve 100, and then flows out of the rotary valve 100 through the second common port 20 and enters the reaction device 1010.

In some embodiments, the solution is a cleaning solution, such as sodium hypochlorite, to effect cleaning of the tubing, reaction device 1010, or reagent needles 1070 in the fluid path system 1000. As used herein, "washing" refers to the introduction of one solution to remove or replace another solution or substance in a previous reaction system, typically without substantial treatment and/or biochemical reactions. In the liquid path system 1000 according to the embodiment of the present utility model, the cleaning liquid is injected into the rotary valve 100 by the injection pump 1020 to clean the reagent needle 1070, thereby realizing the automatic cleaning function of the liquid path system 1000 and prolonging the service life of the liquid path system 1000. For example, after the fluid circuit system 1000 is idle for a period of time, the fluid circuit system 1000 is cleaned when being used again, so that the performance of each instrument in the fluid circuit system 1000 can be maintained.

Referring to FIGS. 1 and 12, in one particular embodiment, the flow direction of the sequencing reagents in the fluid path system 1000 is as follows:

First, the reagent needle 1070 draws the sequencing reagent under the negative pressure generated by the syringe pump 1020;

sequencing reagent then flows into rotary valve 100 through second common port 20;

then, the sequencing reagent flows into the reaction device 1010 through the first bus block 1060 and performs a sequencing reaction;

then, the reacted sequencing reagent flows out of the reaction device 1010 through the second manifold block 1050;

then, the sequencing reagent flows into the syringe pump 1020 through the pipette 1090 by the syringe pump 1020, and flows into the waste liquid confluence block 1002 through the drain tube 1001;

finally, the sequencing reagent flows into the waste cell 1003.

Wherein, the bypass pipe 1080 is connected with the first common port 10 and one syringe pump 1020, the liquid suction pipe 1090 is connected with the second confluence block 1050 and the other syringe pump 1020, the liquid discharge pipe 1001 is connected with the syringe pump 1020 and the liquid waste confluence block 1002, and the liquid waste confluence block 1002 is communicated with the liquid waste tank 1003.

The bypass pipe 1080, the liquid suction pipe 1090, the liquid discharge pipe 1001, the liquid discharge confluence block 1002, and the liquid discharge tank 1003 may be standard components or custom-made components, and the embodiment of the present utility model is not limited thereto.

In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (19)

1. A rotary valve, characterized in that the rotary valve is configured to rotate between a first valve position and a second valve position, the rotary valve being provided with a first common port, a second common port, a plurality of connection ports, a first communication groove and a second communication groove,

the first common port communicates with the connection port through the first communication groove with the rotary valve in the first valve position;

the second common port communicates with the connection port through the second communication groove with the rotary valve in the second valve position.

2. A rotary valve according to claim 1, characterized in that the rotary valve comprises a stator provided with the first common port, the second common port, the plurality of connection ports and at least part of the first communication slot, and a rotor provided opposite the stator provided with at least part of the second communication slot.

3. A rotary valve according to claim 2, wherein the first communication slot comprises a first slot and a second slot which are communicable, the first slot and the second slot being provided to the stator and the rotor, respectively.

4. A rotary valve according to claim 3, wherein the first slot has two ends, one end of the first slot communicating with the first common port and the other end communicating with the second slot, the second slot having two ends, one end of the second slot communicating with the first slot and the other end selectively communicating with one of the connection ports.

5. A rotary valve according to claim 4 wherein the stator comprises first and second opposed end faces, the rotor comprising third and fourth opposed end faces, the second and third end faces being in registry, the first slot being formed in the first end face and the second slot being formed in the third end face.

6. A rotary valve according to claim 2, wherein the second communication groove has two ends, one end of the second communication groove communicating with the second common port and the other end selectively communicating with one of the connection ports.

7. A rotary valve according to claim 6, wherein the stator comprises first and second opposed end faces, the rotor comprises third and fourth opposed end faces, the second and third end faces are in abutment, and the second communication slot is formed in the third end face.

8. A rotary valve according to any one of claims 1 to 7 wherein the plurality of connection ports are disposed around the second common port.

9. A rotary valve according to claim 1, wherein the rotary valve has a central axis, the plurality of connection ports are arranged at intervals on a circular plane having the central axis as an axis, and the second common port is located on the central axis.

10. The rotary valve of claim 1 wherein the plurality of connection ports and the first common port lie on the same circular plane.

11. Rotary valve according to any of claims 2-7, wherein the plurality of connection ports are arranged at intervals along the circumference of the stator or the rotor.

12. Rotary valve according to any of claims 2-7, characterized in that the rotary valve comprises a valve body in which the stator and the rotor are both accommodated.

13. A rotary valve according to claim 12, comprising a valve cover covering the stator and arranged on the valve body, the valve cover having a first interface in communication with the first common port, a second interface in communication with the second common port, and a plurality of third interfaces in one-to-one communication with the connection ports.

14. A rotary valve according to claim 12, further comprising a drive member connected to the rotor, the drive member being provided on the valve body, the drive member being adapted to drive the rotor in rotation.

15. The rotary valve of claim 1 wherein the first common port is isolated from the connection port and the second common port is isolated from the connection port when the rotary valve is in a third valve position.

16. A fluid path system, comprising: the rotary valve of any one of claims 1-15.

17. The fluid circuit system of claim 16, wherein the fluid circuit system comprises a first fluid circuit system, a second fluid circuit system, and a reaction device downstream of the rotary valve, the reaction device comprising a first unit and a second unit, the first fluid circuit system and the second fluid circuit system being independently fed to the first unit and the second unit, respectively.

18. The fluid path system as claimed in claim 17, wherein the first unit and the second unit of the reaction device each comprise at least one fluid channel, the fluid path system comprises a syringe pump and a pipette, the syringe pump is disposed downstream of the reaction device, the syringe pumps are disposed in one-to-one correspondence with the fluid channels and are communicated with the corresponding fluid channels through the pipette, and the syringe pump is used for driving the solution in the fluid path system to flow in a specified direction.

19. The fluid circuit system of claim 18, comprising a waste fluid reservoir and a drain, said waste fluid reservoir being downstream of said syringe pump, said waste fluid reservoir and said syringe pump being in communication through said drain, said waste fluid reservoir for collecting solution after participation in a reaction by said reaction device.