Liquid path system and filling equipment

Abstract

The utility model belongs to the technical field of liquid filling equipment, and discloses a liquid path system and filling equipment, the liquid path system comprises a liquid power source, a first liquid path, a second liquid path, a gas power source, a first gas path, a gas source and a second gas path, the liquid power source is communicated with the filling container through the second liquid path, a first gas pipe and a second gas pipe of the first gas path are both connected with the gas power source, the first gas pipe is used for being communicated with a reagent source, the second gas pipe is used for being communicated with the filling container, the second gas path comprises a third gas pipe and a fourth gas pipe, and the third gas pipe and the fourth gas pipe are both communicated with the gas source. The third air pipe is communicated with the reagent source in an on-off mode, and the fourth air pipe is communicated with the filling container in an on-off mode. According to the liquid path system, air exhaust and oxygen removal operation on the reagent source and the filling container can be achieved, gas which does not contain oxygen and does not react with liquid can be filled into the reagent source and the filling container, and therefore the liquid needing to be isolated from oxygen can be filled.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid filling equipment, in particular to a liquid circuit system and filling equipment. Background Art

[0002] Filling equipment is required when filling reagents from the original reagent bottle into the required container. The filling equipment generally uses a pump as a power source and realizes the transfer of liquid from the original liquid bottle to the container through a liquid path system connected between the original reagent bottle and the container to be filled. However, the existing filling equipment cannot isolate oxygen during the filling process, making it impossible to fill liquids that need to be isolated from oxygen for filling.

[0003] Therefore, how to propose a liquid circuit system and filling equipment that can achieve air extraction and deoxygenation is a technical problem that urgently needs to be solved. Utility Model Content

[0004] The first object of the utility model is to provide a liquid circuit system, which can realize air extraction and deoxygenation, and is beneficial to the quality stability of the liquid after filling.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A liquid circuit system comprises: a liquid power source, a first liquid circuit and a second liquid circuit, the liquid power source being connected to a reagent source through the first liquid circuit in an on-off manner, and the liquid power source being connected to a filling container through the second liquid circuit in an on-off manner; a gas power source and a first gas circuit, the first gas circuit comprising a first gas pipe and a second gas pipe, the first gas pipe and the second gas pipe are both connected to the gas power source, the first gas pipe is used to be connected to the reagent source in an on-off manner, and the second gas pipe is used to be connected to the filling container in an on-off manner; a gas source and a second gas circuit, the second gas circuit comprising a third gas pipe and a fourth gas pipe, one end of the third gas pipe and one end of the fourth gas pipe are both connected to the gas source in an on-off manner, the other end of the third gas pipe is used to be connected to the reagent source in an on-off manner, and the other end of the fourth gas pipe is used to be connected to the filling container in an on-off manner.

[0007] Preferably, the first gas circuit further includes a first main gas pipe, the first gas pipe and the second gas pipe are both connected to one end of the first main gas pipe, and the other end of the first main gas pipe is connected to the gas power source.

[0008] Preferably, a first air pressure regulating valve is provided on the first main air pipe; and / or a fifth switch valve is provided on the first main air pipe.

[0009] Preferably, the first main air pipe includes a first branch pipe and a second branch pipe, one end of the first branch pipe is connected to the gas power source, the other end of the first branch pipe is used to connect to the first opening of the anti-backflow tank, one end of the second branch pipe is used to connect to the second opening of the anti-backflow tank, and the other end of the second branch pipe is connected to both the first air pipe and the second air pipe.

[0010] Preferably, the second gas circuit further includes a second main gas pipe, the third gas pipe and the fourth gas pipe are both connected to one end of the second main gas pipe, and the other end of the second main gas pipe is connected to the gas source.

[0011] Preferably, a second air pressure regulating valve is provided on the second main air pipe.

[0012] Preferably, the liquid power source is one of a plunger pump, a piston pump, a peristaltic pump and a gear pump; and / or, the gas power source is a vacuum pump.

[0013] Preferably, a first switch valve is provided on the first liquid circuit, and a second switch valve is provided on the second liquid circuit; a third switch valve is provided on the first air pipe, and a fourth switch valve is provided on the second air pipe; a sixth switch valve is provided on the third air pipe, and a seventh switch valve is provided on the fourth air pipe.

[0014] Preferably, the first switch valve, the second switch valve, the third switch valve, the fourth switch valve, the sixth switch valve and the seventh switch valve are all solenoid valves.

[0015] The second object of the utility model is to provide a filling device, which can realize air extraction and deoxygenation, which is beneficial to the quality stability of the liquid after filling.

[0016] To achieve this purpose, the utility model adopts the following technical solutions:

[0017] A filling device comprises a reagent source, a filling container and the above-mentioned liquid circuit system, wherein the first liquid circuit, the first air pipe and the third air pipe are all connected to the reagent source, and the second liquid circuit, the second air pipe and the fourth air pipe are all connected to the filling container.

[0018] Beneficial effects of the utility model:

[0019] The liquid circuit system provided by the utility model includes a liquid power source, a first liquid circuit, a second liquid circuit, a gas power source, a first gas circuit, an air source, and a second gas circuit. The liquid power source is connected to the reagent source through the first liquid circuit, and the liquid power source is connected to the filling container through the second liquid circuit. The first gas circuit includes a first air pipe and a second air pipe. The first air pipe and the second air pipe are both connected to the gas power source. The first air pipe is used to communicate with the reagent source, and the second air pipe is used to communicate with the filling container. The second gas circuit includes a third air pipe and a fourth air pipe. The third air pipe and the fourth air pipe are both connected to the gas source. The third air pipe can be connected to the reagent source in an on-off manner, and the fourth air pipe can be connected to the filling container in an on-off manner. The liquid circuit system can perform deoxygenation operations on the reagent source and the filling container respectively through the gas power source and the first gas circuit. Gas that does not contain oxygen and does not react with liquid can be filled into the reagent source and the filling container through the gas source and the second gas circuit, which is convenient for the subsequent filling of liquids that need to be isolated from oxygen, and is beneficial to the quality stability of the filled liquid.

[0020] The filling device provided by the utility model comprises a reagent source, a filling container and a liquid circuit system, wherein the first liquid circuit, the first air pipe and the third air pipe are all connected to the reagent source, and the second liquid circuit, the second air pipe and the fourth air pipe are all connected to the filling container. The filling device can realize the deoxygenation of air and the replenishment of stable gas, so that liquids that need to be isolated from oxygen can be filled, which is beneficial to the quality stability of the filled liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a filling device provided by an embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of a filling container provided by an embodiment of the utility model;

[0023] Figure 3 This is a front view of a filling container provided by an embodiment of the utility model;

[0024] Figure 4 yes Figure 3 Cross-sectional view along the AA direction.

[0025] In the figure:

[0026] 10. Liquid power source; 11. First liquid circuit; 12. Second liquid circuit; 13. First switch valve; 14. Second switch valve; 15. Gas power source; 16. First air pipe; 17. Second air pipe; 18. Third switch valve; 19. Fourth switch valve; 20. First main air pipe; 201. First branch pipe; 202. Second branch pipe; 21. First air pressure regulating valve; 22. Fifth switch valve; 23. Third air pipe; 24. Fourth air pipe; 25. Sixth switch valve; 26. Seventh switch valve; 27. Second main air pipe; 28. Second air pressure regulating valve; 29. ​​Fifth air pipe; 30. Sixth air pipe; 31. Filling needle;

[0027] 100. Reagent source; 200. Filling container; 210. Sealing plug; 300. Anti-backflow tank; 400. Gas source. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] The utility model provides a liquid circuit system, such as Figure 1 As shown, the liquid circuit system includes a liquid power source 10, a first liquid circuit 11, a second liquid circuit 12, a gas power source 15, a first gas circuit, a gas source 400, and a second gas circuit. The liquid power source 10 is connected to the reagent source 100 through the first liquid circuit 11, and the liquid power source 10 is connected to the filling container 200 through the second liquid circuit 12. The first gas circuit includes a first gas pipe 16 and a second gas pipe 17, both of which are connected to the gas power source 15, the first gas pipe 16 is used to be connected to the reagent source 100, and the second gas pipe 17 is used to be connected to the filling container 200. The second air circuit includes a third air pipe 23 and a fourth air pipe 24, one end of the third air pipe 23 and one end of the fourth air pipe 24 are both connected to the air source 400 in an on-off manner, the other end of the third air pipe 23 is used to be connected to the reagent source 100 in an on-off manner, and the other end of the fourth air pipe 24 is used to be connected to the filling container 200 in an on-off manner.

[0033] When the third switch valve 18 is opened, the gas power source 15 can extract the air in the reagent source 100 through the first air pipe 16, thereby removing the oxygen in the air; when the fourth switch valve 19 is opened, the gas power source 15 can extract the air in the filling container 200 through the second air pipe 17, thereby removing the oxygen in the reagent source 100. After the oxygen in the reagent source 100 and the filling container 200 is completely extracted, the liquid in the reagent source 100 can be filled into the filling container 200 under the drive of the liquid power source 10. The liquid circuit system can perform degassing and deoxygenation operations on the reagent source 100 and the filling container 200 respectively through the gas power source 15 and the first gas circuit. After the reagent source 100 and the filling container 200 are degassing and deoxygenated, the gas that does not react with the reagent and does not contain oxygen can be filled into the first gas circuit through the gas source 400 and the second gas circuit. The liquid circuit system can realize the evacuation and deoxygenation of the reagent source 100 and the filling container 200 and the replenishment of stable gas, thereby facilitating the subsequent filling of liquids that need to be isolated from oxygen, and is beneficial to the quality stability of the filled liquid.

[0034] Continue to refer to Figure 1As shown, a first switch valve 13 is provided on the first liquid circuit 11. A second switch valve 14 is provided on the second liquid circuit 12. A third switch valve 18 is provided on the first air pipe 16. A fourth switch valve 19 is provided on the second air pipe 17. A sixth switch valve 25 is provided on the third air pipe 23. A seventh switch valve 26 is provided on the fourth air pipe 24. By providing switch valves on different liquid circuits and air circuits, the individual opening and closing of each liquid circuit and air circuit can be controlled. Of course, the conduction of other liquid circuits or air circuits can also be achieved by removing certain liquid circuits or air circuits from the entire liquid circuit system and sealing the holes left by the removal.

[0035] In some embodiments, the first switch valve 13 is a solenoid valve. The second switch valve 14 is a solenoid valve. The third switch valve 18 is a solenoid valve. The fourth switch valve 19 is a solenoid valve. The sixth switch valve 25 is a solenoid valve. The seventh switch valve 26 is a solenoid valve. In a specific embodiment, the first switch valve 13 and the second switch valve 14 are both two-position three-way solenoid valves. In a specific embodiment, the third switch valve 18 and the fourth switch valve 19 are both two-position two-way solenoid valves. In a specific embodiment, the sixth switch valve 25 and the seventh switch valve 26 are both two-position two-way solenoid valves.

[0036] In some embodiments, the liquid power source 10 is a plunger pump. Of course, in other embodiments, the liquid power source 10 can also be other pumps such as a piston pump, a peristaltic pump or a gear pump.

[0037] In some embodiments, the reagent source 100 includes a reagent stock solution bottle and a reagent disposed in the reagent stock solution bottle, the first liquid path 11 is formed by a first liquid tube, the end of the first liquid tube extends into the reagent stock solution bottle and is disposed near the bottom of the reagent stock solution bottle, the end of the first gas tube 16 extends into the reagent stock solution bottle and is disposed near the top of the reagent stock solution bottle, and the reagent can be pressed into the first liquid path 11 by filling the reagent stock solution bottle with gas. Of course, in other embodiments, the container for containing the reagent may also be a reagent stock solution bag.

[0038] like Figures 2 to 4 As shown, in some embodiments, the filling container 200 is a reagent bag, and a filling port is provided at the top of the reagent bag, and a sealing plug 210 is provided in the filling port. In one embodiment, the sealing plug 210 is a rubber plug. The second liquid circuit 12 is formed by a second liquid tube, and a filling needle 31 is provided at one end of the second liquid tube. The filling needle 31 passes through the sealing plug 210 and communicates with the space in the reagent bag. Since oxygen needs to be isolated during the filling process, the sealing plug 210 can improve the sealing performance at the filling port, and the filling needle 31 penetrates the sealing plug 210 to communicate with the space in the reagent bag, so that the gas evacuation action and liquid filling action of the reagent bag can be performed.

[0039] In some embodiments, the gas power source 15 is a vacuum pump that can form a vacuum degree of 50 KPa-55 KPa in the reagent source 100 and the filling container 200 .

[0040] In some embodiments, the first air pipe 16 and the second air pipe 17 are independent air pipes, and two gas power sources 15 are provided, wherein one gas power source 15 is connected to the first air pipe 16 , and the other gas power source 15 is connected to the second air pipe 17 .

[0041] In some parallel embodiments, continue to refer to Figure 1 As shown, the first gas circuit also includes a first main gas pipe 20, and the first main gas pipe 20, the first gas pipe 16, and the second gas pipe 17 are connected in a Y shape or a T shape. Specifically, the first gas pipe 16 and the second gas pipe 17 are both connected to one end of the first main gas pipe 20, and the other end of the first main gas pipe 20 is connected to the gas power source 15. In one embodiment, the first main gas pipe 20, the first gas pipe 16, and the second gas pipe 17 are integrally formed pipes. In a parallel embodiment, the first main gas pipe 20, the first gas pipe 16, and the second gas pipe 17 are three independent pipes, which are connected by a three-way joint.

[0042] Continue to refer to Figure 1 As shown, in some embodiments, a first air pressure regulating valve 21 is provided on the first main air pipe 20. The air pressure in the first air circuit can be adjusted by the first air pressure regulating valve 21 so that the air pressure in the first air circuit meets the demand. Of course, in other embodiments, an air pressure regulating valve can be provided on the first air pipe 16 and the second air pipe 17 respectively, so as to adjust the air pressure in the first air circuit.

[0043] Continue to refer to Figure 1 As shown, in some embodiments, a fifth switch valve 22 is provided on the first main gas pipe 20, and the opening and closing of the first main gas pipe 20 can be controlled by the fifth switch valve 22. In one embodiment, the fifth switch valve 22 is a two-position three-way solenoid valve.

[0044] In order to make the liquid circuit system have an anti-backflow function, so as to avoid the liquid of the reagent source 100 or the filling container 200 from being backflowed into the gas power source 15 and thus damaging the gas power source 15, in some embodiments, the first gas circuit can be connected to the anti-backflow tank 300. Specifically, the first main gas pipe 20 includes a first branch pipe 201 and a second branch pipe 202. One end of the first branch pipe 201 is connected to the gas power source 15, and the other end of the first branch pipe 201 is used to communicate with the first opening of the anti-backflow tank 300. One end of the second branch pipe 202 is used to communicate with the second opening of the anti-backflow tank 300, and the other end of the second branch pipe 202 is simultaneously connected to the first gas pipe 16 and the second gas pipe 17. It should be noted that the first opening and the second opening are both arranged at the top of the anti-backflow tank 300, so that even if backflow occurs, the liquid backflowing from the reagent source 100 or the filling container 200 can flow into the anti-backflow tank 300 for temporary storage, and cannot flow into the gas power source 15, thereby facilitating the safety of the gas power source 15.

[0045] In some embodiments, the third gas pipe 23 and the fourth gas pipe 24 are independent gas pipes, and two gas sources 400 are provided, one of which is connected to the third gas pipe 23, and the other is connected to the fourth gas pipe 24. It should be noted that the gas components contained in the two gas sources 400 can be the same or different, as long as they do not react with the reagent and do not contain oxygen.

[0046] In some parallel embodiments, continue to refer to Figure 1 As shown, the second gas circuit also includes a second main gas pipe 27, and the second main gas pipe 27, the third gas pipe 23 and the fourth gas pipe 24 are connected in a Y shape or a T shape. Specifically, the third gas pipe 23 and the fourth gas pipe 24 are both connected to one end of the second main gas pipe 27, and the other end of the second main gas pipe 27 is connected to the gas source 400. At this time, only one gas source 400 is provided.

[0047] In one embodiment, the second main air pipe 27, the third air pipe 23 and the fourth air pipe 24 are integrally formed pipes. In a parallel embodiment, the second main air pipe 27, the third air pipe 23 and the fourth air pipe 24 are three independent pipes connected by a three-way joint.

[0048] In some embodiments, the liquid circuit system also includes a fifth air pipe 29, which is used to connect the first air pipe 16 and the third air pipe 23 to the reagent source 100. Specifically, the first air pipe 16, the third air pipe 23 and the fifth air pipe 29 are connected in a Y-shape or a T-shape, and the end of the fifth air pipe 29 away from the first air pipe 16 and the third air pipe 23 is connected to the reagent source 100.

[0049] In some embodiments, the liquid circuit system also includes a sixth air pipe 30, which is used to connect the second air pipe 17 and the fourth air pipe 24 to the filling container 200. Specifically, the second air pipe 17, the fourth air pipe 24 and the sixth air pipe 30 are connected in a Y-shape or a T-shape, and the end of the sixth air pipe 30 away from the second air pipe 17 and the fourth air pipe 24 is connected to the filling container 200.

[0050] Continue to refer to Figure 1 As shown, a second air pressure regulating valve 28 is provided on the second main air pipe 27. The air pressure in the second air circuit can be adjusted by the second air pressure regulating valve 28 so that the air pressure in the second air circuit meets the demand. Of course, in other embodiments, an air pressure regulating valve can be provided on each of the third air pipe 23 and the fourth air pipe 24, so as to adjust the air pressure in the second air circuit.

[0051] In some embodiments, the liquid circuit system further includes a first air pressure display meter (not shown in the figure), which is arranged on the first air circuit and is used to display the air pressure in the first air circuit. In some embodiments, the liquid circuit system further includes a second air pressure display meter (not shown in the figure), which is arranged on the second air circuit and is used to display the air pressure in the second air circuit. The user can monitor and adjust the pressure of the reagent source 100 and the filling container 200 according to the two air pressure display meters and the two air pressure regulating valves, so as to ensure the smooth progress of the filling of the reagent and obtain sufficient quality assurance.

[0052] The utility model also provides a filling device, such as Figure 1 As shown, the filling device includes a reagent source 100, a filling container 200 and a liquid circuit system, the first liquid circuit 11, the first air pipe 16 and the third air pipe 23 are all connected to the reagent source 100, and the second liquid circuit 12, the second air pipe 17 and the fourth air pipe 24 are all connected to the filling container 200. By using the aforementioned liquid circuit system, the filling device can achieve air extraction and deoxygenation, so that the filling device can fill liquids that need to be isolated from oxygen, thereby improving the quality stability of the filled liquid.

[0053] In some embodiments, the first liquid circuit 11 and the fifth air pipe 29 are both detachably connected to the reagent source 100, so that the filling device can replace different reagent sources 100 as needed to meet the filling requirements of different reagents.

[0054] In some embodiments, the second liquid circuit 12 and the sixth air pipe 30 are both detachably connected to the filling container 200, so that the filling device can replace different filling containers 200 as needed to meet multiple filling needs.

[0055] In some embodiments, the gas source 400 is detachably connected to the other end of the second main gas pipe 27, so that the liquid circuit system can be connected to different gas sources 400, and different types of gases can be introduced into the reagent source 100 and the filling container 200 as needed to meet different filling requirements, making the use of the liquid circuit system more convenient and helping to improve experimental efficiency.

[0056] In this embodiment, the filling device also includes a control mechanism, which can be a centralized or distributed controller. For example, the controller can be a single single-chip microcomputer or a distributed multiple single-chip microcomputer. The single-chip microcomputer can run a control program to control the liquid power source 10, the gas power source 15 and all valves to realize their functions. It should be noted that the filling device can be controlled by an external computer. In this case, the computer is the control mechanism, so that external control of the filling device can be achieved. Of course, the filling device can also have its own control mechanism, so that autonomous control of the filling device can be achieved.

[0057] In some embodiments, the filling device further includes a key switch, which can be activated by triggering the key switch, and the control mechanism controls the liquid power source 10, the gas power source 15 and all valves in sequence according to a set control program, thereby achieving air extraction, gas injection and liquid injection. As for the control program, it is a prior art and will not be described in detail here. In some embodiments, the filling device further includes a reset button, which can be triggered to restore the filling device to its initial state.

[0058] The working process of the filling equipment is as follows:

[0059] 1. The filling equipment is connected to a power source, the second main gas pipe 27 of the second gas circuit is connected to the gas source 400, and the second gas pressure regulating valve 28 adjusts the gas pressure in the second gas circuit as needed.

[0060] 2. Reagent source deoxygenation:

[0061] When it is necessary to deoxygenate the reagent source 100, only the fifth switch valve 22 and the third switch valve 18 need to be opened, and the other switch valves are closed. The gas power source 15 works through the first main gas pipe 20 and the first gas pipe 16 to suck gas from the reagent stock solution bottle of the reagent source 100 and generate negative pressure. When the reagent stock solution bottle reaches the set negative pressure, the fifth switch valve 22 and the third switch valve 18 are closed; then, the sixth switch valve 25 is opened to fill the gas in the gas source 400 into the reagent stock solution bottle, and the sixth switch valve 25 is closed when the pressure in the reagent stock solution bottle reaches the set value. This step can be repeated multiple times according to actual needs, and the gas in the gas source 400 is used to dilute and discharge the oxygen in the reagent stock solution bottle.

[0062] 3. Filling container 200 deoxygenation:

[0063] When the filling container 200 needs to be deoxygenated, it is only necessary to open the fifth switch valve 22, the fourth switch valve 19 and the second switch valve 14, and the gas power source 15 works to suck the gas in the filling container 200 through the first main gas pipe 20 and the second gas pipe 17 to generate negative pressure. When the filling container 200 reaches the set negative pressure, the fifth switch valve 22, the fourth switch valve 19 and the second switch valve 14 are closed; then, the seventh switch valve 26 and the second switch valve 14 are opened to fill the gas in the gas source 400 into the filling container 200, and the seventh switch valve 26 is closed when the pressure in the filling container 200 reaches the set value. This step can be repeated multiple times according to actual needs to achieve the purpose of removing oxygen from the filling container 200.

[0064] 4. Liquid circuit pre-filling:

[0065] When the first liquid circuit 11 and the second liquid circuit 12 need to be pre-filled, it is only necessary to open the first switch valve 13. After the liquid power source 10 draws a set volume of reagent from the reagent source 100, the first liquid circuit 11 is now filled with reagent. Then, the first switch valve 13 is switched to be connected to the filling container 200, and the second switch valve 14 is opened. The liquid power source 10 discharges the liquid so that the second liquid circuit 12 is filled with reagent. This step can be repeated as many times as needed to keep the reagent in the liquid circuit consistent with the reagent in the original liquid bottle. It should be noted that this step is to fill the liquid circuit with reagent to avoid occupying part of the reagent in the liquid circuit when the filling container 200 is filled, which is beneficial to improve the reagent filling accuracy.

[0066] 5. Filling container 200 filling:

[0067] Only the seventh switch valve 26 and the second switch valve 14 are opened. After the liquid power source 10 absorbs the set volume, the second switch valve 14 is connected to the first switch valve 13 end, and the first switch valve 13 is opened at the same time, and the liquid power source 10 pushes the reagent into the filling container 200. According to the volume requirement of the liquid to be filled, this filling step can be repeated. It should be noted that while filling the liquid, the gas in the gas source 400 will enter the reagent stock solution bottle to maintain a stable pressure.

[0068] It should be noted that the reagent in the reagent source 100 can also be a cleaning agent as required, and the filling needle 31 can be connected to an external waste liquid collector as required. By controlling the liquid power source 10, the gas power source 15 and all valve actions, the cleaning agent can flow in the first liquid path 11 and the second liquid path 12, and after the cleaning agent completes the cleaning of the first liquid path 11 and the second liquid path 12, the formed waste liquid is discharged into the waste liquid collector, which is convenient for centralized treatment of the waste liquid in the later stage. In addition, the volume of the filling reagent perfused by the filling equipment is between 5mL-35mL, and the filling accuracy error is not higher than 5%.

[0069] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A liquid circuit system, characterized in that: include: A liquid power source (10), a first liquid path (11) and a second liquid path (12), wherein the liquid power source (10) is connected to a reagent source (100) through the first liquid path (11), and the liquid power source (10) is connected to a filling container (200) through the second liquid path (12); A gas power source (15) and a first gas circuit, wherein the first gas circuit comprises a first gas pipe (16) and a second gas pipe (17), wherein the first gas pipe (16) and the second gas pipe (17) are both connected to the gas power source (15), wherein the first gas pipe (16) is used to be connected to the reagent source (100) in a disconnectable manner, and the second gas pipe (17) is used to be connected to the filling container (200) in a disconnectable manner; A gas source (400) and a second gas circuit, wherein the second gas circuit comprises a third gas pipe (23) and a fourth gas pipe (24), one end of the third gas pipe (23) and one end of the fourth gas pipe (24) are both connected to the gas source (400) in a disconnectable manner, the other end of the third gas pipe (23) is used to be connected to the reagent source (100) in a disconnectable manner, and the other end of the fourth gas pipe (24) is used to be connected to the filling container (200) in a disconnectable manner.

2. The fluid circuit system according to claim 1, characterized in that: The first gas circuit further comprises a first main gas pipe (20), the first gas pipe (16) and the second gas pipe (17) are both connected to one end of the first main gas pipe (20), and the other end of the first main gas pipe (20) is connected to the gas power source (15).

3. The fluid circuit system according to claim 2, characterized in that: The first main air pipe (20) is provided with a first air pressure regulating valve (21); And / or, a fifth switch valve (22) is provided on the first main gas pipe (20).

4. The fluid circuit system according to claim 2, characterized in that: The first main gas pipe (20) comprises a first branch pipe (201) and a second branch pipe (202), one end of the first branch pipe (201) is connected to the gas power source (15), the other end of the first branch pipe (201) is used to be connected to the first opening of the anti-backflow tank (300), one end of the second branch pipe (202) is used to be connected to the second opening of the anti-backflow tank (300), and the other end of the second branch pipe (202) is simultaneously connected to the first gas pipe (16) and the second gas pipe (17).

5. The fluid circuit system according to claim 1, characterized in that: The second gas circuit further comprises a second main gas pipe (27), the third gas pipe (23) and the fourth gas pipe (24) are both connected to one end of the second main gas pipe (27), and the other end of the second main gas pipe (27) is connected to the gas source (400).

6. The fluid circuit system according to claim 5, characterized in that: The second main air pipe (27) is provided with a second air pressure regulating valve (28).

7. The fluid circuit system according to claim 1, characterized in that: The liquid power source (10) is one of a plunger pump, a piston pump, a peristaltic pump and a gear pump; And / or, the gas power source (15) is a vacuum pump.

8. The fluid circuit system according to any one of claims 1 to 7, characterized in that: The first liquid circuit (11) is provided with a first switch valve (13), and the second liquid circuit (12) is provided with a second switch valve (14); The first air pipe (16) is provided with a third switch valve (18), and the second air pipe (17) is provided with a fourth switch valve (19); The third air pipe (23) is provided with a sixth switch valve (25), and the fourth air pipe (24) is provided with a seventh switch valve (26).

9. The fluid circuit system according to claim 8, characterized in that: The first switch valve (13), the second switch valve (14), the third switch valve (18), the fourth switch valve (19), the sixth switch valve (25) and the seventh switch valve (26) are all solenoid valves.

10. A filling device, characterized in that: The invention comprises a reagent source (100), a filling container (200) and a liquid circuit system according to any one of claims 1 to 9, wherein the first liquid circuit (11), the first air pipe (16) and the third air pipe (23) are all connected to the reagent source (100), and the second liquid circuit (12), the second air pipe (17) and the fourth air pipe (24) are all connected to the filling container (200).

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