Liquid adding equipment and experimental system

Abstract

The utility model discloses liquid adding equipment and an experimental system, the liquid adding equipment comprises a liquid supply device and a liquid adding needle, and the liquid supply device is used for selectively supplying liquid from various liquids; the liquid adding needle is communicated with the liquid supply device; wherein the liquid supply device comprises a first valve assembly, a second valve assembly and a driving pump, the first valve assembly, the second valve assembly and the liquid adding needle are communicated in sequence, the first valve assembly is used for controlling any one of multiple kinds of liquid to be communicated with the second valve assembly, the driving pump is connected with the second valve assembly, and the second valve assembly is used for controlling the liquid to be communicated with the liquid adding needle. The driving pump is used for driving the liquid flowing into the second valve assembly to flow to the liquid adding needle. According to the liquid adding equipment and the experimental system provided by the invention, liquid is selectively supplied from various liquids through one set of liquid supply device, and the various liquids can be injected into the liquid receiving container, so that the whole structure of the liquid adding equipment is simple, and the production cost of the liquid adding equipment is favorably reduced.

Description

Technical Field

[0001] This application relates to the technical field of automated equipment, and particularly relates to a liquid adding device and an experimental system. Background Art

[0002] In existing liquid adding devices, in order to enable multiple liquids to flow into a reaction vessel, multiple sets of liquid supply devices need to be provided. Each set of liquid supply device is used to supply one kind of liquid into the reaction vessel to achieve injecting different liquids into the reaction vessel separately. However, setting multiple sets of liquid supply devices in the liquid adding device will make the overall structure of the liquid adding device more complex, thereby increasing the overall production cost of the liquid adding device. Utility Model Content

[0003] The purpose of this application is to provide a liquid adding device and an experimental system to solve the problems of the current complex overall structure and high cost of the device.

[0004] To achieve the purpose of this application, the following technical solutions are provided in this application:

[0005] In a first aspect, this application provides a liquid adding device, including:

[0006] A liquid supply device for selectively supplying liquid from multiple liquids; and

[0007] A liquid adding needle communicated with the liquid supply device;

[0008] Wherein, the liquid supply device includes a first valve assembly, a second valve assembly and a driving pump. The first valve assembly, the second valve assembly and the liquid adding needle are communicated in sequence. The first valve assembly is used to control any one of the multiple liquids to be communicated with the second valve assembly. The driving pump is connected to the second valve assembly. The second valve assembly is used to control the liquid to be communicated with the liquid adding needle. The driving pump is used to drive the liquid flowing into the second valve assembly to flow to the liquid adding needle.

[0009] In a possible implementation manner, the first valve assembly includes a first multi-channel switching valve. The first multi-channel switching valve, the second valve assembly and the liquid adding needle are communicated in sequence. The first multi-channel switching valve is used to control any one of the multiple liquids to be communicated with the second valve assembly. The first multi-channel switching valve includes a first common channel and a plurality of first interfaces respectively communicated with the first common channel. The plurality of first interfaces are respectively communicated with a plurality of solvent bottles containing different liquids in one-to-one correspondence. The first common channel is communicated with the second valve assembly.

[0010] In a possible implementation, the first valve assembly further includes a second multi-channel switching valve, and the first multi-channel switching valve, the second multi-channel switching valve, the second valve assembly, and the liquid adding needle are connected in sequence; the first multi-channel switching valve is used to control any one of multiple liquids to communicate with the second multi-channel switching valve; the second multi-channel switching valve is used to control the liquid output from the first multi-channel switching valve to communicate with the second valve assembly; the second multi-channel switching valve includes a second common channel and a plurality of second interfaces respectively communicating with the second common channel, the second common channel communicates with the first common channel, and at least one of the second interfaces communicates with the second valve assembly.

[0011] In a possible implementation, the second valve assembly includes a plurality of solenoid valves, and the plurality of solenoid valves communicate with the plurality of second interfaces in one-to-one correspondence; the number of the driving pumps is multiple, and the multiple driving pumps are connected to the plurality of solenoid valves in one-to-one correspondence; the number of the liquid adding needles is one, and the liquid adding needle can communicate with at least one of the solenoid valves; or, the number of the liquid adding needles is multiple, one liquid adding needle can communicate with at least one of the solenoid valves, and / or multiple liquid adding needles can communicate with one solenoid valve.

[0012] In a possible implementation, the liquid adding needle includes a first liquid adding needle, and the first liquid adding needle includes a first connector, a first needle body, and a first needle tip connected in sequence. The first connector connects the liquid supply device to the first needle body, and the first needle tip is arranged parallel to the first needle body; and / or, the liquid adding needle includes a second liquid adding needle, and the second liquid adding needle includes a second connector, a second needle body, and a second needle tip connected in sequence. The second connector connects the liquid supply device to the second needle body, and the second needle tip is arranged obliquely with respect to the second needle body.

[0013] In a possible implementation, the liquid adding device further includes a rotary drive mechanism and a container seat. The rotary drive mechanism is connected to the container seat and can drive the container seat to rotate. The container seat is used to carry the liquid receiving container and drive the liquid receiving container to rotate around its own axis.

[0014] In a possible implementation, the liquid adding device further includes a moving device and a support frame. The liquid supply device and the moving device are installed on the support frame, and the liquid adding needle is installed on the moving device. The moving device is used to drive the liquid adding needle to perform a movement with at least one degree of freedom.

[0015] In a possible implementation, the mobile device includes a first moving member, a second moving member, and a third moving member. The first moving member is mounted on the support frame, the second moving member is mounted on the first moving member, the third moving member is mounted on the second moving member, and the liquid adding needle is mounted on the third moving member. The first moving member is configured to drive the second moving member, the third moving member, and the liquid adding needle to move in a first direction. The second moving member is configured to drive the third moving member and the liquid adding needle to move in a second direction. The third moving member is configured to drive the liquid adding needle to move in a third direction. The first direction is different from the second direction, the second direction is different from the third direction, and the third direction is different from the first direction.

[0016] In a possible implementation, the liquid adding device further includes a cleaning device configured to clean the liquid adding needle. The cleaning device includes an overflow tank and a cleaning tank. The cleaning tank is received in the overflow tank, and at least a part of the outer sidewall of the cleaning tank is spaced apart from at least a part of the inner sidewall of the overflow tank. The cleaning tank includes an upper opening for the liquid adding needle to extend into and a cleaning channel for cleaning the liquid adding needle. The cleaning channel communicates with the upper opening. The overflow tank includes an upper opening communicating with the upper opening, a liquid outlet for draining liquid, and an overflow chamber communicating the upper opening with the liquid outlet. The liquid outlet penetrates the bottom wall of the overflow tank. At least a part of the inner sidewall or the bottom wall of the overflow chamber is inclined in the direction from the upper opening to the liquid outlet. The cleaning tank is located on the inclined inner sidewall or bottom wall in the overflow chamber and is close to the liquid outlet.

[0017] In a possible implementation, the cleaning tank includes a first cleaning tank and a second cleaning tank. The first cleaning tank and the second cleaning tank are spaced apart and disposed in the overflow tank. The first cleaning tank includes a first upper opening for the liquid adding needle to extend into, a first liquid outlet hole for draining liquid, and a first cleaning channel communicating the first upper opening with the first liquid outlet hole. The first upper opening and the first liquid outlet hole are oppositely disposed. The size of the first liquid outlet hole is smaller than the size of the first upper opening. The first liquid outlet hole penetrates the bottom wall of the overflow tank and is spaced apart from the liquid outlet. The second cleaning tank includes a second upper opening for the liquid adding needle to extend into, a second liquid outlet hole for draining liquid, and a second cleaning channel communicating the second upper opening with the second liquid outlet hole. The second upper opening and the second liquid outlet hole are oppositely disposed. The size of the second liquid outlet hole is smaller than the size of the second upper opening. The second liquid outlet hole penetrates the bottom wall of the overflow tank and is spaced apart from the liquid outlet. The size of the second upper opening is larger than the size of the first upper opening, and the radial size of the second cleaning channel is larger than the radial size of the first cleaning channel.

[0018] In a possible implementation, the cleaning device further includes a liquid collecting tank, and the liquid collecting tank is connected to one end of the bottom wall of the overflow tank; the liquid collecting tank has a communicating liquid collecting cavity and a liquid discharging port, the liquid collecting cavity communicates with the liquid discharging port, the first liquid discharging hole and the second liquid discharging hole, and the liquid discharging port is used for communicating with a liquid discharging pipeline.

[0019] In a possible implementation, the liquid adding device further includes a detection device, and the detection device is used for detecting the liquid adding situation in the liquid receiving container.

[0020] In a possible implementation, the detection device includes a camera and a light source, the camera is movably arranged, and the light source is movably arranged; the liquid receiving container is located between the camera and the light source, the camera is used for obtaining the liquid adding situation in the liquid receiving container, and the light source is used to cooperate with the camera to obtain the liquid adding situation in the liquid receiving container.

[0021] In a second aspect, the present application provides an experimental system, including:

[0022] The above-mentioned liquid adding device.

[0023] In a possible implementation, the experimental system further includes a handling device, and the handling device is used for picking up and placing the liquid receiving container on the liquid adding device.

[0024] For the liquid adding device and the experimental system provided by the present application, the first valve assembly of the liquid supply device, the second valve assembly of the liquid supply device and the liquid adding needle are sequentially connected in communication, and the first valve assembly of the liquid supply device controls any one of a plurality of liquids to communicate with the second valve assembly. The driving pump of the liquid supply device drives the liquid flowing to the second valve assembly to flow into the liquid adding needle, so that a set of liquid supply device can selectively supply liquid to the liquid receiving container from a plurality of liquids through the liquid adding needle, that is, it realizes injecting a plurality of liquids into the liquid receiving container respectively through a set of liquid supply device, making the structure of the liquid adding device simple and conducive to reducing the production cost of the liquid adding device. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is an assembly drawing of a liquid adding device provided by an embodiment of the present application from a first perspective;

[0027] Figure 2It is an assembly drawing of a liquid adding device provided by an embodiment of the present application from a second perspective;

[0028] Figure 3 It is an assembly drawing of a mobile device and a liquid adding needle provided by an embodiment of the present application;

[0029] Figure 4 It is an assembly drawing of a liquid receiving container, a rotary drive mechanism and a container seat provided by an embodiment of the present application;

[0030] Figure 5 It is a top view of a cleaning device provided by an embodiment of the present application;

[0031] Figure 6 is Figure 5 a sectional view of the cleaning device shown at A-A;

[0032] Figure 7 It is an assembly drawing of a liquid adding device provided by another embodiment of the present application.

[0033] Explanation of reference numerals:

[0034] 100 - Liquid adding device, 10 - Liquid supply device, 11 - First valve assembly, 111 - First multi-channel switching valve, 1111 - First common channel, 1112 - First interface, 112 - Second multi-channel switching valve, 1121 - Second common channel, 1122 - Second interface, 12 - Second valve assembly, 121 - Solenoid valve, 13 - Driving pump, 20 - Liquid adding needle, 21 - First liquid adding needle, 211 - First joint, 212 - First needle body, 213 - First needle tip, 22 - Second liquid adding needle, 221 - Second joint, 222 - Second needle body, 223 - Second needle tip, 30 - Rotary drive mechanism, 31 - Rotary motor, 32 - Synchronous belt, 33 - Synchronous pulley, 40 - Container seat, 50 - Mobile device, 51 - First moving part, 52 - Second moving part, 53 - Third moving part, 60 - Support frame, 61 - First support part, 62 - Second support part, 63 - Third support part, 70 - Cleaning device, 71 - Overflow tank, 711 - Upper opening, 712 - Liquid outlet, 713 - Overflow chamber, 72 - Cleaning tank, 721 - Upper opening, 722 - Cleaning channel, 723 - First cleaning tank, 7231 - First upper opening, 7232 - First liquid outlet hole, 7233 - First cleaning channel, 724 - Second cleaning tank, 7241 - Second upper opening, 7242 - Second liquid outlet hole, 7243 - Second cleaning channel, 73 - Liquid collection tank, 731 - Liquid collection chamber, 732 - Drain port, 80 - Detection device, 81 - Camera, 82 - Light source, 90 - Liquid receiving container. Detailed implementation manners

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0036] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time.

[0037] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the present application in the specification are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The term "and / or" used in the present application includes any and all combinations of one or more of the related listed items.

[0038] The following will elaborate on some embodiments of the present application with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0039] Please refer to Figure 1 and Figure 2 , Figure 1 which is an assembly drawing of a liquid adding device provided by an embodiment of the present application from a first perspective, Figure 2 and

[0040] In one embodiment, the liquid adding device 100 includes a liquid supply device 10 and a liquid adding needle 20. The liquid supply device 10 is used to selectively supply liquid from multiple liquids. The liquid adding needle 20 is communicated with the liquid supply device 10 so that the liquid adding needle 20 can selectively add liquid to the liquid receiving container 90. The liquid supply device 10 of the liquid adding device 100 includes a first valve assembly 11, a second valve assembly 12 and a driving pump 13. The first valve assembly 11, the second valve assembly 12 and the liquid adding needle 20 are communicated in sequence. The first valve assembly 11 is also connected to multiple liquids respectively. The first valve assembly 11 is used to control any one of the multiple liquids to be communicated with the second valve assembly 12 so that any one of the multiple liquids can selectively flow into the second valve assembly 12 through the first valve assembly 11. The second valve assembly 12 is used to control the liquid flowing into the second valve assembly 12 from the first valve assembly 11 to be communicated with the liquid adding needle 20 so that the liquid supply device 10 can selectively inject the liquid into the liquid adding needle 20, which is convenient for the liquid adding needle 20 to inject the liquid into the liquid receiving container 90. The driving pump 13 is connected to the second valve assembly 12. The driving pump 13 is used to drive the liquid flowing into the second valve assembly 12 to flow to the liquid adding needle 20. Among them, the first valve assembly 11 and the second valve assembly 12 are communicated through a connecting pipe, the second valve assembly 12 and the liquid adding needle 20 are communicated through a connecting pipe, and the second valve assembly 12 and the driving pump 13 are communicated through a connecting pipe. The connecting pipe includes but is not limited to a polytetrafluoroethylene pipe (PTFE pipe) and other connecting pipes.

[0041] For the liquid adding device 100 provided in this embodiment, the first valve assembly 11 of the liquid supply device 10, the second valve assembly 12 of the liquid supply device 10 and the liquid adding needle 20 are communicated in sequence. And the first valve assembly 11 of the liquid supply device 10 controls any one of the multiple liquids to be communicated with the second valve assembly 12, and the driving pump 13 of the liquid supply device 10 drives the liquid flowing to the second valve assembly 12 to flow into the liquid adding needle 20, so that a set of liquid supply device 10 can selectively supply liquid to the liquid receiving container 90 through the liquid adding needle 20, that is, realize injecting multiple liquids into the liquid receiving container 90 respectively through a set of liquid supply device 10, making the structure of the liquid adding device 100 simple and conducive to reducing the production cost of the liquid adding device 100.

[0042] In this embodiment, the driving pump 13 is a plunger pump. The plunger pump has high volumetric efficiency and small leakage, and is suitable for driving the flow of liquids with higher cleanliness. It can be understood that in some other embodiments, the driving pump 13 includes but is not limited to a diaphragm pump, a peristaltic pump, a gear pump, a vane pump, a screw pump, etc., and the present application does not make any restrictions on this.

[0043] In this embodiment, the driving pump 13 is used to drive the liquid to flow from the second valve assembly 12 into the liquid filling needle 20. It can be understood that in some other embodiments, the driving pump 13 can also drive the liquid in the liquid filling needle 20 to flow back into the second valve assembly 12. Thus, it is convenient to transfer the mixed liquid in the liquid receiving container 90, and the present application does not limit this.

[0044] Please refer to Figure 1 and Figure 2 , in a specific embodiment, the first valve assembly 11 of the liquid filling device 100 includes a first multi-channel switching valve 111 and a second multi-channel switching valve 112. The first multi-channel switching valve 111, the second multi-channel switching valve 112, the second valve assembly 12, and the liquid filling needle 20 are connected in sequence. The first multi-channel switching valve 111 is also connected to a variety of liquids respectively. The first multi-channel switching valve 111 is used to control any one of the variety of liquids to communicate with the second multi-channel switching valve 112, and the second multi-channel switching valve 112 is used to control the liquid output from the first multi-channel switching valve 111 to communicate with the second valve assembly 12. Among them, the first multi-channel switching valve 111 includes a first common channel 1111 and a plurality of first interfaces 1112. One ends of the plurality of first interfaces 1112 are respectively communicated with one end of the first common channel 1111, and the other ends of the plurality of first interfaces 1112 are respectively communicated with a plurality of solvent bottles containing different liquids in a one-to-one correspondence. The second multi-channel switching valve 112 includes a second common channel 1121 and a plurality of second interfaces 1122. One end of the second common channel 1121 is communicated with the plurality of second interfaces 1122, and the other end of the second common channel 1121 is communicated with the first common channel 1111 of the first multi-channel switching valve 111. At least one second interface 1122 is communicated with the second valve assembly 12.

[0045] Among them, the first interface 1112 and the plurality of solvent bottles containing different liquids are communicated through a connecting pipe. The first common channel 1111 and the second common channel 1121 are communicated through a connecting pipe. The second interface 1122 and the second valve assembly 12 are communicated through a connecting pipe. The connecting pipe includes, but is not limited to, a polytetrafluoroethylene pipe (PTFE pipe) and other connecting pipes.

[0046] It can be understood that when the first valve assembly 11 of the liquid adding device 100 includes a first multi-channel switching valve 111 and a second multi-channel switching valve 112, since the second multi-channel switching valve 112 has a plurality of second interfaces 1122, the second multi-channel switching valve 112 can provide a plurality of interfaces to communicate with the second valve assembly 12. Under the action of the valve core of the first multi-channel switching valve 111, one of the plurality of first interfaces 1112 is communicated with the first common channel 1111, so as to realize that the first multi-channel switching valve 111 selectively communicates with one of the plurality of liquids, and further enables the liquid supply device 10 to selectively supply liquid. Under the action of the valve core of the second multi-channel switching valve 112, one of the plurality of second interfaces 1122 is communicated with the second common channel 1121, so as to realize that the second multi-channel switching valve 112 selectively communicates the liquid in the first common channel 1111 with the second valve assembly 12.

[0047] Please refer to Figure 1 and Figure 2 , in a specific embodiment, the second valve assembly 12 of the liquid supply device 10 in the liquid adding device 100 includes a plurality of solenoid valves 121, and each solenoid valve 121 is communicated with one of the second interfaces 1122 of the second multi-channel switching valve 112, and the second interfaces 1122 communicated with different solenoid valves 121 are different. The number of solenoid valves 121 may be less than or equal to the number of second interfaces 1122. At the same time, the number of driving pumps 13 is multiple, each driving pump 13 is connected to one solenoid valve 121, and the solenoid valves 121 connected to different driving pumps 13 are different. The number of driving pumps 13 may be equivalent to the number of solenoid valves 121. Each driving pump 13 is used to drive the liquid in the corresponding connected solenoid valve 121 to flow to the liquid adding needle 20. Moreover, the number of liquid adding needles 20 of the liquid adding device 100 is multiple, and each liquid adding needle 20 is communicated with one solenoid valve 121.

[0048] In the liquid adding device 100 provided in this embodiment, since the second valve assembly 12 includes a plurality of solenoid valves 121, and each solenoid valve 121 is connected to one liquid adding needle 20, the liquid output by the second multi-channel switching valve 112 can be selectively output from one of the plurality of solenoid valves 121 corresponding to one liquid adding needle 20, so that the liquid adding device 100 can add liquid to one or more liquid receiving containers 90 through different liquid adding needles 20, which is beneficial to improving the liquid adding efficiency of the liquid adding device 100. Moreover, each solenoid valve 121 is equipped with a driving pump 13, which can control the liquid output speed of each liquid adding needle 20, and is beneficial to saving the liquid output time.

[0049] In this embodiment, the solenoid valve 121 is a multi-way solenoid valve, such as a two-way three-way solenoid valve, a two-way five-way solenoid valve, etc. A multi-way solenoid valve can be connected to one or more liquid adding needles 20. When connecting multiple liquid adding needles 20, it is convenient to perform liquid adding switching between the multiple liquid adding needles 20, realizing precise control of the liquid flow direction. It can be understood that in some other embodiments, the solenoid valve 121 can be set as other types of control valves according to needs, such as a diaphragm solenoid valve, and the present application does not limit this.

[0050] In some other embodiments, one of the multiple liquid adding needles 20 can communicate with at least two solenoid valves 121; and / or, the multiple liquid adding needles 20 can communicate with one solenoid valve 121, and the present application does not limit this. For example, there are a total of 4 liquid adding needles (liquid adding needles 1 - 4) and 4 solenoid valves (solenoid valves 1 - 4). The liquid adding needle 1 is connected to the solenoid valve 1, the liquid adding needle 2 is connected to the solenoid valve 2 and the solenoid valve 3 at the same time, and both the liquid adding needle 3 and the liquid adding needle 4 are connected to the solenoid valve 4.

[0051] In some other embodiments, the number of the liquid adding needles 20 of the liquid adding device 100 can be one. One liquid adding needle 20 communicates with one solenoid valve 121. Or, one liquid adding needle 20 communicates with at least two solenoid valves 121, and the present application does not limit this. It can be understood that when one liquid adding needle 20 is connected to two solenoid valves 121, each solenoid valve 121 is equipped with a driving pump 13. Since a single driving pump 13 cooperates with a single solenoid valve 121 to first suck the liquid and then spit the liquid, this causes the liquid adding needle 20 to discharge intermittently, with low liquid discharging efficiency. When two solenoid valves 121 and two driving pumps 13 cooperate with one liquid adding needle 20, one driving pump 13 is spitting the liquid while the other driving pump 13 is sucking the liquid, which can make the liquid adding needle 20 maintain continuous liquid discharging, thereby improving the liquid adding rate.

[0052] In some other embodiments, the first valve assembly 11 of the liquid adding device 100 only includes a first multi-channel switching valve 111. The first multi-channel switching valve 111, the second valve assembly 12, and the liquid adding needle 20 are connected in sequence. The first multi-channel switching valve 111 is also connected to various liquids respectively. The first multi-channel switching valve 111 is used to control any one of the various liquids to communicate with the second valve assembly 12. Among them, the first multi-channel switching valve 111 includes a first common channel 1111 and multiple first interfaces 1112. One ends of the multiple first interfaces 1112 are respectively connected to one end of the first common channel 1111, and the other ends of the multiple first interfaces 1112 are respectively connected to multiple solvent bottles containing different liquids in one-to-one correspondence. The other end of the first common channel 1111 is connected to the second valve assembly 12.

[0053] It can be understood that when the first valve assembly 11 of the liquid adding device 100 only includes the first multi-channel switching valve 111, since the first multi-channel switching valve 111 has a first common channel 1111, therefore, the first valve assembly 11 only provides one interface to communicate with the second valve assembly 12.

[0054] Based on this, the second valve assembly 12 of the liquid adding device 100 includes an electromagnetic valve 121. The liquid adding device 100 may include a liquid adding needle 20, and a liquid adding needle 20 communicates with an electromagnetic valve 121. Alternatively, the liquid adding device 100 may include multiple liquid adding needles 20, and multiple liquid adding needles 20 all communicate with the electromagnetic valve 121.

[0055] Please refer to Figures 1 to 3 , Figure 3 which is an assembly diagram of a mobile device and a liquid adding needle provided in an embodiment of the present application.

[0056] In a specific embodiment, the liquid adding needle 20 of the liquid adding device 100 includes a first liquid adding needle 21 and a second liquid adding needle 22. The first liquid adding needle 21 is connected to an electromagnetic valve 121. When the first multi-channel switching valve 111, the second multi-channel switching valve 112, the electromagnetic valve 121, and the first liquid adding needle 21 are sequentially communicated, the liquid can be output into the liquid receiving container 90 sequentially through the first multi-channel switching valve 111, the second multi-channel switching valve 112, the electromagnetic valve 121, and the first liquid adding needle 21 under the action of the driving pump 13 connected to the electromagnetic valve 121 to which the first liquid adding needle 21 is connected. The second liquid adding needle 22 is connected to an electromagnetic valve 121. When the first multi-channel switching valve 111, the second multi-channel switching valve 112, the electromagnetic valve 121, and the second liquid adding needle 22 are sequentially communicated, the liquid can be output into the liquid receiving container 90 sequentially through the first multi-channel switching valve 111, the second multi-channel switching valve 112, the electromagnetic valve 121, and the second liquid adding needle 22 under the action of the driving pump 13 connected to the electromagnetic valve 121 to which the second liquid adding needle 22 is connected.

[0057] In this embodiment, the first liquid adding needle 21 and the second liquid adding needle 22 may be connected to the same electromagnetic valve 121; or, the first liquid adding needle 21 and the second liquid adding needle 22 are connected to different electromagnetic valves 121; or, the first liquid adding needle 21 is connected to an electromagnetic valve 121, and the second liquid adding needle 22 is connected to two electromagnetic valves 121. Two driving pumps 13 respectively control the liquid in the two electromagnetic valves 121 to flow to the second liquid adding needle 22 to adjust the liquid flow rate of the second liquid adding needle 22.

[0058] Among them, the first liquid adding needle 21 includes a first connector 211, a first needle body 212, and a first needle tip 213 connected in sequence. The first connector 211 connects the electromagnetic valve 121 and the first needle body 212. The first needle tip 213 is arranged parallel to the first needle body 212, that is, the extending direction of the first needle tip 213 is the same as the extending direction of the first needle body 212. Among them, the first liquid adding needle 21 is suitable for adding liquid to a conventional liquid receiving container 90, adding liquid to a liquid receiving container 90 with a small aperture, and so on.

[0059] In the liquid adding device 100 provided in this embodiment, by arranging the first needle tip 213 parallel to the first needle body 212, the liquid passing through the first liquid adding needle 21 can be directly output to the bottom wall of the liquid receiving container 90 without forming residues on the inner side wall of the liquid receiving container 90, which is beneficial to improving the reaction accuracy in the liquid receiving container 90 after the liquid adding device 100 adds liquid. At the same time, the first needle tip 213 is arranged parallel to the first needle body 212 to facilitate the first liquid adding needle 21 to extend into the liquid receiving container 90 with a small aperture for adding liquid.

[0060] Among them, the second liquid adding needle 22 includes a second connector 221, a second needle body 222, and a second needle tip 223 connected in sequence. The second connector 221 connects the electromagnetic valve 121 and the second needle body 222. The second needle tip 223 is arranged obliquely with respect to the second needle body 222, that is, the included angle formed between the extending direction of the second needle tip 223 and the extending direction of the second needle body 222 is not equal to 0.

[0061] In the liquid adding device 100 provided in this embodiment, by arranging the second needle tip 223 obliquely with respect to the second needle body 222, the liquid passing through the second liquid adding needle 22 can be output to the inner side wall of the liquid receiving container 90. Under the action of the gravity of the liquid itself, the liquid flows down along the inner side wall of the liquid receiving container 90 to the bottom wall of the liquid receiving container 90. Thus, the liquid can wash down the solute attached to the inner side wall of the liquid receiving container 90, which is beneficial to improving the reaction accuracy between the liquid adding device 100 and the solute in the liquid receiving container 90 after adding liquid.

[0062] In some other embodiments, the liquid adding needle 20 may only include the first liquid adding needle 21, and the number of the first liquid adding needles 21 is not limited. Or, the liquid adding needle 20 may only include the second liquid adding needle 22, and the number of the second liquid adding needles 22 is not limited. The present application does not limit this.

[0063] Please refer to Figures 1 to 4 , Figure 4 which is an assembly drawing of a liquid receiving container, a rotary drive mechanism, and a container seat provided in an embodiment of the present application.

[0064] In one embodiment, the liquid adding device 100 includes a liquid supply device 10, a liquid adding needle 20, a rotation driving mechanism 30 and a container seat 40. The rotation driving mechanism 30 is connected to the container seat 40 and can drive the container seat 40 to rotate. The container seat 40 is used to carry the liquid receiving container 90. Under the action of the rotation driving mechanism 30, the container seat 40 drives the liquid receiving container 90 to rotate around its own axis.

[0065] For the liquid adding device 100 provided in this embodiment, the rotation driving mechanism 30 drives the container seat 40 to drive the liquid receiving container 90 carried on the container seat 40 to rotate around its own axis, so that various liquids in the liquid receiving container 90 are mixed more evenly, which is beneficial to improving the reaction efficiency of various liquids in the liquid receiving container 90.

[0066] In a specific embodiment, on the premise that multiple liquid adding needles 20 of the liquid adding device 100 include the second liquid adding needle 22, the rotation driving mechanism 30 of the liquid adding device 100 drives the container seat 40 to drive the liquid receiving container 90 carried on the container seat 40 to rotate around its own axis, so that the liquid output by the second liquid adding needle 22 can be output to the inner side wall of the liquid receiving container 90. Moreover, as the rotation driving mechanism 30 drives the container seat 40 to drive the liquid receiving container 90 carried on the container seat 40 to rotate around its own axis, the liquid output by the second liquid adding needle 22 can cover the entire circumferential direction of the inner side wall of the liquid receiving container 90, so that any solute remaining at any position on the inner side wall of the liquid receiving container 90 can be brought along the inner side wall of the liquid receiving container 90 to the bottom wall of the liquid receiving container 90 under the action of the gravity of the liquid itself, which is beneficial to further improving the reaction accuracy between the liquid and the solute in the liquid receiving container 90 after the liquid adding device 100 adds liquid.

[0067] More specifically, the rotation driving mechanism 30 includes a rotation motor 31, a synchronous belt 32 and two synchronous wheels 33. The rotation motor 31 is connected to one synchronous wheel 33 and can drive this synchronous wheel 33 to rotate. The container seat 40 is fixedly connected to the other synchronous wheel 33 and rotates with the rotation of this synchronous wheel 33. The synchronous belt 32 is wound around the two synchronous wheels 33. When the synchronous wheel 33 connected to the rotation motor 31 is driven to rotate by the rotation motor 31, it drives the synchronous belt 32 to rotate, and then drives the synchronous wheel 33 connected to the container seat 40 to rotate. The container seat 40 is used to carry the liquid receiving container 90. Among them, the liquid receiving container 90 suitable for the container seat 40 includes but is not limited to a volumetric flask, a concentrating flask, a test tube, etc.

[0068] It can be understood that other transmission methods can be adopted to achieve power transmission between the rotary drive mechanism 30 and the container base 40, and the embodiments of the present application are not limited thereto. For example, the rotary motor 31 can be directly connected to the container base 40. Another example is that two gears can be used to replace the two synchronous pulleys 33 and the synchronous belt 32 to achieve power transmission; specifically, the rotary motor 31 is connected to one gear and can drive the gear to rotate, the container base 40 is fixedly connected to another gear and can rotate with the rotation of the gear, and the two gears are meshed. When the gear connected to the rotary motor 31 is driven to rotate by the rotary motor 31, it drives the synchronous pulley 33 connected to the container base 40 to rotate, and further causes the container base 40 to rotate together with the liquid receiving container 90.

[0069] To reduce the relative rotation between the liquid receiving container 90 and the container base 40, a limiting portion can be provided on the container base 40. The limiting portion is used to cooperate with the liquid receiving container 90 to limit the liquid receiving container 90, thereby reducing the relative rotation between the liquid receiving container 90 and the container base 40. The limiting portion includes but is not limited to at least one of a limiting boss, a limiting groove, an elastic claw, a magnetic attraction member, etc. Taking the limiting portion as an elastic claw as an example, the limiting portion is arranged inside the container base 40 and is used to abut against the liquid receiving container 90 to increase the friction coefficient between the container base 40 and the liquid receiving container 90, and further can reduce the relative rotation between the liquid receiving container 90 and the container base 40.

[0070] Please refer to Figure 1 and Figure 2 , in one embodiment, the liquid adding device 100 includes a liquid supply device 10, a liquid adding needle 20, a moving device 50, and a support frame 60. The liquid supply device 10 and the moving device 50 are both installed on the support frame 60, the liquid adding needle 20 is installed on the moving device 50, and the moving device 50 can drive the liquid adding needle 20 to move relative to the support frame 60 by at least one degree of freedom, so that the liquid adding needle 20 can be moved to the liquid receiving container 90 or other devices, so as to facilitate introducing the liquid output by the liquid adding needle 20 into the liquid receiving container 90 and facilitating other functional operations of the liquid adding needle 20.

[0071] For the liquid adding device 100 provided by the embodiment of the present application, the liquid adding device 100 drives the liquid adding needle 20 to move through the movement of the moving device 50, so as to facilitate the liquid adding needle 20 to add liquid to a plurality of liquid receiving containers 90, which is beneficial to improving the liquid adding efficiency of the liquid adding device 100.

[0072] The structure of the support frame 60 is not limited in this embodiment. The support frame 60 is a support basis for other structures. In the application environment, the support frame 60 can be directly placed on the ground or on other countertops. Preferably, the support frame 60 should have the characteristics of stable structure, horizontal adjustability, and shock resistance, so as to ensure the stability of the liquid adding device 100 during the working process.

[0073] Please refer to Figure 1 and Figure 2 In a specific embodiment, the support frame 60 of the liquid adding device 100 includes a first support portion 61 and a second support portion 62 that are fixedly connected. The first support portion 61 is arranged in the horizontal direction and is used to carry the liquid receiving container 90 or an intermediate member (such as the aforementioned rotation driving mechanism 30 and container seat 40) that supports the liquid receiving container 90. The second support portion 62 is arranged in a direction perpendicular to the horizontal plane. The first multi-channel switching valve 111, the second multi-channel switching valve 112, the solenoid valve 121, and the driving pump 13 in the liquid supply device 10 are all installed on the second support portion 62. The moving device 50 is also installed on the second support portion 62, and the liquid adding needle 20 is installed on the moving device 50. Thus, the moving device 50 drives the liquid adding needle 20 to move in space, so that the liquid adding needle 20 can add liquid to the liquid receiving container 90 or the liquid adding needle 20 can perform other functional operations at other positions in space.

[0074] Please refer to Figure 1 and Figure 2 In a specific embodiment, when the first liquid adding needle 21 is used to add liquid to a microplate, the support frame 60 of the liquid adding device 100 further includes a third support portion 63. The third support portion 63 is installed on the first support portion 61 and is used to carry the microplate. Since the overall height of the microplate is relatively small, through the setting of the third support portion 63, the microplate can be lifted as a whole, so that the position where the microplate is located is within the moving stroke range of the moving device 50, and further the first liquid adding needle 21 can add liquid to the microplate carried on the third support portion 63. Among them, the fixed position of the third support portion 63 on the first support portion 61 can be positioned by a pin, and the third support portion 63 is fixedly connected to the first support portion 61 by a pin.

[0075] Please refer to Figure 1 and Figure 2 In a specific embodiment, the liquid receiving container 90 can also be an Erlenmeyer flask, and the Erlenmeyer flask is arranged on the first support portion 61. Among them, a receiving groove is provided on the first support portion 61, and the Erlenmeyer flask is arranged in the receiving groove. The receiving groove is used to limit the Erlenmeyer flask, so that the stability of the Erlenmeyer flask on the first support portion 61 is better.

[0076] Please refer to Figure 1 and Figure 2, in a specific embodiment, the moving device 50 of the liquid adding device 100 includes a first moving member 51, a second moving member 52, and a third moving member 53. The first moving member 51 is installed on the second supporting portion 62 of the supporting frame 60, and the movable end of the first moving member 51 can perform a reciprocating linear motion along a first direction. The second moving member 52 is installed on the movable end of the first moving member 51, and the movable end of the second moving member 52 can perform a reciprocating linear motion along a second direction. The third moving member 53 is installed on the movable end of the second moving member 52, and the movable end of the third moving member 53 can perform a reciprocating linear motion along a third direction. The liquid adding needle 20 is installed on the movable end of the third moving member 53. The movement of the movable end of the first moving member 51 drives the second moving member 52, the third moving member 53, and the liquid adding needle 20 to perform a reciprocating linear motion along the first direction. The movement of the movable end of the second moving member 52 drives the third moving member 53 and the liquid adding needle 20 to perform a reciprocating linear motion along the second direction. The movement of the movable end of the third moving member 53 drives the liquid adding needle 20 to perform a reciprocating linear motion along the third direction. Wherein, the first direction is different from the second direction, the second direction is different from the third direction, and the third direction is different from the first direction. Thus, under the action of the first moving member 51, the second moving member 52, and the third moving member 53, the liquid adding needle 20 can move to any position in the space, so as to facilitate the liquid adding operation of the liquid adding needle 20 to the liquid receiving container 90 placed at any position on the first supporting portion 61, and also facilitate the liquid adding operation of the liquid adding needle 20 to the liquid receiving container 90 at any height placed on the first supporting portion 61.

[0077] In this embodiment, the first direction, the second direction, and the third direction are perpendicular to each other pairwise. The first direction is the X-axis direction as shown in Figure 1 , the second direction is the Y-axis direction as shown in Figure 1 , and the third direction is the Z-axis direction as shown in Figure 1 . It can be understood that in some other embodiments, the first direction, the second direction, and the third direction may not be perpendicular to each other. The moving device 50 may be a manipulator or other structures for driving movement, and the present application does not limit this. The structures of the first moving member 51, the second moving member 52, and the third moving member 53 may be the same or similar, for example, they are all combinations of a driving motor and a lead screw slide.

[0078] It can be understood that when the number of liquid adding needles 20 is multiple, the third moving member 53 can drive different liquid adding needles 20 to perform reciprocating linear motions along the third direction respectively, so as to realize independent control of each liquid adding needle 20 and improve the flexibility of the device.

[0079] The liquid adding device 100 provided by the embodiment of the present application drives the liquid adding needle 20 to move to any position in space through the moving device 50, so as to facilitate the liquid adding needle 20 to add liquid to the liquid receiving containers 90 at multiple different positions stored in the space, which is beneficial to improving the liquid adding efficiency of the liquid adding device 100.

[0080] Please refer to Figure 1 、 Figure 5 and Figure 6 , Figure 5 which is a top view of a cleaning device provided by an embodiment of the present application, Figure 6 and Figure 5 is a cross-sectional view of the cleaning device shown in

[0081] In one embodiment, the liquid adding device 100 includes a liquid supply device 10, a liquid adding needle 20, a moving device 50, a support frame 60 and a cleaning device 70, and the cleaning device 70 is used to clean the liquid adding needle 20.

[0082] The liquid adding device 100 provided by the embodiment of the present application, through the arrangement of the cleaning device 70, the liquid adding needle 20 can move to the cleaning device 70 through the moving device 50 for cleaning, so that a liquid adding needle 20 can add different liquids to different liquid receiving containers 90 without mutual contamination. The cleaning device 70 can be fixedly arranged on the support frame 60, such as being arranged on the first support part 61 or the second support part 62.

[0083] In a specific embodiment, the cleaning device 70 of the liquid adding device 100 includes an overflow tank 71 and a cleaning tank 72. The cleaning tank 72 is received in the overflow tank 71, and at least part of the outer side wall of the cleaning tank 72 is spaced apart from at least part of the inner side wall of the overflow tank 71. The cleaning tank 72 is used to clean the liquid adding needle 20, and the liquid adding needles 20 that the cleaning tank 72 can clean include but are not limited to the first liquid adding needle 21 or the second liquid adding needle 22. The cleaning tank 72 includes an upper opening 721 for the liquid adding needle 20 to extend into and a cleaning channel 722 for cleaning the liquid adding needle 20, and the cleaning channel 722 is communicated with the upper opening 721. The overflow tank 71 includes an upper opening 711 communicated with the upper opening 721, a liquid outlet 712 for discharging liquid, and an overflow cavity 713 communicating the upper opening 711 and the liquid outlet 712. The liquid outlet 712 penetrates the bottom wall of the overflow tank 71; at least part of the inner side wall of the overflow cavity 713 is inclined in the direction from the upper opening 711 to the liquid outlet 712, and the cleaning tank 72 is located on the inclined inner side wall in the overflow cavity 713 and close to the liquid outlet 712; or, at least part of the bottom wall of the overflow cavity 713 is inclined in the direction from the upper opening 711 to the liquid outlet 712, and the cleaning tank 72 is located on the inclined bottom wall in the overflow cavity 713 and close to the liquid outlet 712.

[0084] In this embodiment, the overflow chamber 713 is funnel-shaped, that is, the part of the inner wall of the overflow chamber 713 close to the bottom wall is recessed from the periphery towards the middle position, and the liquid outlet 712 is arranged at the lowest position of the horizontal plane of the bottom wall, so that the cleaning liquid can flow along the inclined inner wall to the liquid outlet 712.

[0085] It can be understood that in some other embodiments, the overflow chamber 713 can be obliquely-mouthed, that is, at least part of the bottom wall of the overflow chamber 713 is inclined relative to the horizontal plane, and the liquid outlet 712 is arranged at the lowest position of the horizontal plane of the bottom wall. The present application does not limit this.

[0086] In this embodiment, the cleaning tank 72 can be a structure with one end open and the other end closed (that is, the end of the cleaning channel 722 far from the upper opening 721 is closed), or the cleaning tank 72 can be a structure with both ends open (that is, the end of the cleaning channel 722 far from the upper opening 721 is non-closed). The present application does not limit this. The cleaning tank 72 has a certain liquid storage function and can be used to clean the inner wall of the liquid adding needle 20 or the outer wall of the liquid adding needle 20. When the cleaning liquid in the cleaning tank 72 is too much, it can overflow from the upper opening 721 into the overflow tank 71 and then be discharged from the liquid outlet 712. In addition to the liquid discharging function, the overflow tank 71 can also be used to clean the inner wall of the liquid adding needle 20. Specifically, the liquid adding needle 20 extends through the upper open end 711 and is placed above the liquid outlet 712, and the liquid supply device 10 is used to supply the cleaning liquid to the liquid adding needle 20 to realize the cleaning of the inner wall of the liquid adding needle 20, and the waste liquid after cleaning can be discharged from the liquid outlet 712 in time.

[0087] This embodiment provides a liquid adding device 100. The cleaning device 70 includes an overflow tank 71 and a cleaning tank 72. The cleaning tank 72 is received in the overflow tank 71 and does not expose the upper open end 711 of the overflow tank 71. When it is necessary to clean the inner wall and the outer wall of the liquid adding needle 20 simultaneously, the liquid supply device 10 is used to supply the cleaning liquid to the liquid adding needle 20. When the liquid adding needle 20 discharges the liquid, the inner wall of the liquid adding needle 20 is cleaned. Then, the cleaning liquid discharged from the liquid adding needle 20 accumulates in the cleaning channel 722 to clean the outer wall of the liquid adding needle 20. The excessive cleaning liquid overflows from the upper opening 721 of the cleaning channel 722 and flows into the overflow chamber 713, so that the cleaning liquid can be discharged from the liquid outlet 712 in time.

[0088] Please refer to Figure 1 、 Figure 5 and Figure 6 , further, the cleaning tank 72 of the liquid adding device 100 includes a first cleaning tank 723 and a second cleaning tank 724. The first cleaning tank 723 and the second cleaning tank 724 are arranged in the overflow tank 71 at intervals. The first cleaning tank 723 is located in the overflow chamber 713 and does not expose the upper open end 711, and the second cleaning tank 724 is located in the overflow chamber 713 and does not expose the upper open end 711.

[0089] The first cleaning tank 723 includes a first upper opening 7231 for the liquid adding needle 20 to extend into, a first liquid outlet hole 7232 for draining liquid, and a first cleaning channel 7233 connecting the first upper opening 7231 and the first liquid outlet hole 7232. The first upper opening 7231 and the first liquid outlet hole 7232 are oppositely arranged. The size of the first liquid outlet hole 7232 is smaller than that of the first upper opening 7231. The first liquid outlet hole 7232 penetrates the bottom wall of the overflow tank 71 and is arranged at an interval from the liquid outlet 712. Since the size of the first liquid outlet hole 7232 is smaller than that of the first upper opening 7231, when the discharge flow rate of the cleaning liquid from the liquid adding needle 20 is greater than the leakage flow rate of the first liquid outlet hole 7232, the cleaning liquid discharged from the liquid adding needle 20 gradually accumulates in the first cleaning channel 7233 and overflows from the first upper opening 7231 into the overflow chamber 713 when exceeding the volume of the first cleaning channel 7233, so that the first cleaning tank 723 can clean the inner wall and the outer wall of the liquid adding needle 20 simultaneously. In addition, the size of the liquid outlet 712 is larger than that of the first liquid outlet hole 7232, which facilitates the rapid discharge of the waste liquid overflowing into the overflow chamber 713 and avoids the accumulation in the overflow chamber 713 and the overflow outside the liquid adding device 100, causing equipment pollution.

[0090] The second cleaning tank 724 includes a second upper opening 7241 for the liquid adding needle 20 to extend into, a second liquid outlet hole 7242 for draining liquid, and a second cleaning channel 7243 connecting the second upper opening 7241 and the second liquid outlet hole 7242. The second upper opening 7241 and the second liquid outlet hole 7242 are oppositely arranged. The size of the second liquid outlet hole 7242 is smaller than that of the second upper opening 7241. The second liquid outlet hole 7242 penetrates the bottom wall of the overflow tank 71 and is arranged at an interval from the liquid outlet 712. Since the size of the second liquid outlet hole 7242 is smaller than that of the second upper opening 7241, when the discharge flow rate of the cleaning liquid from the liquid adding needle 20 is greater than the leakage flow rate of the second liquid outlet hole 7242, the cleaning liquid discharged from the liquid adding needle 20 gradually accumulates in the second cleaning channel 7243 and overflows from the second upper opening 7241 into the overflow chamber 713 when exceeding the volume of the second cleaning channel 7243, so that the second cleaning tank 724 can clean the inner wall and the outer wall of the liquid adding needle 20 simultaneously. In addition, the size of the liquid outlet 712 is larger than that of the second liquid outlet hole 7242, which facilitates the rapid discharge of the waste liquid overflowing into the overflow chamber 713 and avoids the accumulation in the overflow chamber 713 and the overflow outside the liquid adding device 100, causing equipment pollution.

[0091] The size of the second upper opening 7241 is larger than that of the first upper opening 7231, and the radial size of the second cleaning channel 7243 is larger than that of the first cleaning channel 7233. Thus, the first cleaning tank 723 and the second cleaning tank 724 can be used to clean the liquid adding needles 20 of different sizes and shapes. For example, the first cleaning tank 723 can be used for cleaning the first liquid adding needle 21, and the second cleaning tank 724 can be used for cleaning the second liquid adding needle 22. It can be understood that the second cleaning tank 724 can also be used for cleaning the first liquid adding needle 21.

[0092] Please refer to Figure 1 、 Figure 5 and Figure 6 , and further, the cleaning device 70 of the liquid adding device 100 further includes a liquid collecting tank 73. The liquid collecting tank 73 is connected to the side of the bottom wall of the overflow tank 71 facing away from the upper opening 711. The liquid collecting tank 73 is used to collect the cleaning liquid flowing out from the liquid outlet 712 of the overflow tank 71, the first liquid outlet hole 7232 of the first cleaning tank 723, and the second liquid outlet hole 7242 of the second cleaning tank 724. The liquid collecting tank 73 has a liquid collecting cavity 731 and a liquid discharge port 732. The liquid collecting cavity 731 and the liquid discharge port 732 are communicated. The liquid discharge port 732 is arranged at one end of the liquid collecting tank 73 away from the overflow tank 71. The liquid collecting cavity 731 is in a funnel shape, and the opening size of the liquid collecting cavity 731 at the end close to the overflow tank 71 is larger than the opening size of the liquid collecting cavity 731 at the end away from the overflow tank 71. The liquid collecting cavity 731 is communicated with the liquid outlet 712 of the overflow tank 71, the first liquid outlet hole 7232 of the first cleaning tank 723, and the second liquid outlet hole 7242 of the second cleaning tank 724, so that the cleaning liquid flowing out from the liquid outlet 712 of the overflow tank 71, the first liquid outlet hole 7232 of the first cleaning tank 723, and the second liquid outlet hole 7242 of the second cleaning tank 724 flows into the liquid collecting cavity 731. The liquid discharge port 732 is communicated with a liquid discharge pipe, so as to discharge the cleaning liquid in the liquid collecting cavity 731 from the liquid discharge port 732.

[0093] Please refer to Figure 1 and Figure 2, in a specific embodiment, the liquid adding device 100 further includes a control device (not shown in the figure). The control device is used to control the movement of the moving device 50, and the control device is also used to control the liquid supply device 10 to selectively supply liquid. The control device can respectively control the movement of the movable ends of the first moving member 51, the second moving member 52, and the third moving member 53 of the moving device 50, so that the liquid adding needle 20 can reach any position in the space. The control device can also control the states of the first multi-channel switching valve 111 and the second multi-channel switching valve 112, so that the corresponding liquid can flow into the solenoid valve 121. The control device can also control the state of the solenoid valve 121, so that the corresponding liquid can flow into the corresponding liquid adding needle 20 through the solenoid valve 121. The control device can also control the working state of the driving pump 13 to drive the flow rate of the liquid flowing from the liquid supply device 10 into the liquid adding needle 20. Thus, through the setting of the control device, it is beneficial to improve the degree of automatic liquid adding of the liquid adding device 100.

[0094] Please refer to Figure 7 , Figure 7 is an assembly drawing of a liquid adding device provided by another embodiment of the present application.

[0095] In some other embodiments, the liquid adding device 100 further includes a detection device 80. The detection device 80 is arranged on the support frame 60, and the detection device 80 is used to detect the liquid adding situation in the liquid receiving container 90. The liquid adding situation includes but is not limited to the liquid residue situation, liquid constant volume situation, liquid mixing situation, liquid reaction situation, etc. in the liquid receiving container 90. Specifically, the detection device 80 includes a camera 81. The camera 81 is installed on the first support portion 61 of the support frame 60. The camera 81 is used to take pictures of the liquid receiving container 90 and the liquid and / or solid in the liquid receiving container 90, and the liquid adding situation in the liquid receiving container 90 is obtained through the camera 81. In this embodiment, the camera 81 is a CCD industrial camera. It can be understood that in some other embodiments, the camera 81 can be other image acquisition devices or sensors, and the present application does not limit this.

[0096] In one implementation manner, the detection device 80 includes a camera 81 and a light source 82. The light source 82 is installed on the support frame 60. The light source 82 is used to emit light and cooperate with the camera 81, so that the camera 81 can more clearly obtain the liquid adding situation in the liquid receiving container 90. It can be understood that both the camera 81 and the light source 82 are movably arranged on the first support portion 61 or the second support portion 62. Both the camera 81 and the light source 82 can move horizontally, or can move vertically, or can both move horizontally and vertically. The present application does not limit this.

[0097] In one embodiment, the camera 81 is movably mounted on the horizontal plane where the first support portion 61 is located. Correspondingly, the light source 82 is movably mounted on the horizontal plane where the first support portion 61 is located, so that the camera 81 can obtain the liquid filling condition of the liquid receiving container 90 at any position on the first support portion 61.

[0098] In one embodiment, the camera 81 is vertically movably mounted on the horizontal plane where the first support portion 61 is located. Correspondingly, the light source 82 is vertically movably mounted on the horizontal plane where the first support portion 61 is located, so that the camera 81 can obtain the liquid filling condition of the liquid receiving container 90 at any height position on the first support portion 61.

[0099] This application also provides an experimental system, and the experimental system includes the foregoing Figure 1 or Figure 7 the liquid filling device 100 shown in the figure. The liquid filling device 100 is used to selectively inject one or more liquids into the liquid receiving container 90 from a variety of liquids.

[0100] In some embodiments, the experimental system may further include a liquid source device for storing liquids, and the liquid source device is connected to the liquid filling device 100. The liquid source device may be formed by a variety of liquid storage tanks (such as solvent bottles), and each liquid storage tank is used to store one liquid, and each liquid storage tank is communicated with the liquid filling device 100, so that the liquid filling device 100 can selectively inject one or more liquids from the liquid source device into the liquid receiving container 90.

[0101] In some embodiments, the experimental system may further include a reaction device for providing some necessary reaction conditions for the mixed liquid in the liquid receiving container 90 after the liquid filling is completed, and further reacting the mixed liquid in the liquid receiving container 90 after the liquid filling is completed. For example, the reaction device may be a heating device, and the heating device heats the mixed liquid in the liquid receiving container 90 after the liquid filling is completed, so that the mixed liquid in the liquid receiving container 90 after the liquid filling is completed reacts at a predetermined reaction temperature. Or, the reaction device may also be a shaking device, and the shaking device shakes the mixed liquid in the liquid receiving container 90 after the liquid filling is completed, so that the mixed liquid in the liquid receiving container 90 after the liquid filling is completed is fully mixed.

[0102] In some embodiments, the experimental system may further include an inspection device for inspecting the mixed liquid in the liquid receiving container 90 after the liquid filling is completed or the reaction is completed, so as to detect the reaction condition of the mixed liquid in the liquid receiving container 90.

[0103] Furthermore, the experimental system may further include a handling device, which may be a mobile robot with grippers (such as an AGV cart), a multi-degree-of-freedom manipulator fixed on a workbench, an XYZ three-axis translation mechanism, etc., to achieve the fully automated process of the experiment. The handling device is used to pick up and place the liquid receiving container 90 on the liquid adding device 100. Specifically, it transfers the empty liquid receiving container 90 or the liquid receiving container 90 that has completed the previous experimental process to the liquid adding device 100, and / or timely removes the liquid receiving container 90 after the liquid adding is completed, so as to transfer the liquid receiving container 90 to the next experimental process, such as transferring the liquid receiving container 90 after the liquid adding is completed to the reaction device or the detection device. In addition, the handling device can also be used for material transfer between other devices in the experimental system and / or for material transfer between the experimental system and external devices, and the present application does not limit this.

[0104] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is the orientation or positional relationship based on the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0105] The above-disclosed is only a preferred embodiment of the present application, and of course, it cannot be used to limit the scope of rights of the present application. Those of ordinary skill in the art can understand the entire or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A liquid adding device, characterized in that, Comprising: A liquid supply device for selectively supplying liquid from a plurality of liquids; And A liquid adding needle communicated with the liquid supply device; Wherein, the liquid supply device includes a first valve assembly, a second valve assembly and a driving pump. The first valve assembly, the second valve assembly and the liquid adding needle are communicated in sequence. The first valve assembly is used to control any one of the plurality of liquids to be communicated with the second valve assembly. The driving pump is connected to the second valve assembly. The second valve assembly is used to control the liquid to be communicated with the liquid adding needle. The driving pump is used to drive the liquid flowing into the second valve assembly to flow to the liquid adding needle.

2. The liquid adding device according to claim 1, wherein The first valve assembly includes a first multi-channel switching valve. The first multi-channel switching valve, the second valve assembly and the liquid adding needle are communicated in sequence. The first multi-channel switching valve is used to control any one of the plurality of liquids to be communicated with the second valve assembly; The first multi-channel switching valve includes a first common channel and a plurality of first interfaces respectively communicated with the first common channel. The plurality of first interfaces are respectively communicated with a plurality of solvent bottles containing different liquids in a one-to-one correspondence. The first common channel is communicated with the second valve assembly.

3. The liquid adding device according to claim 2, characterized in that, The first valve assembly further includes a second multi-channel switching valve. The first multi-channel switching valve, the second multi-channel switching valve, the second valve assembly and the liquid adding needle are communicated in sequence. The first multi-channel switching valve is used to control any one of the plurality of liquids to be communicated with the second multi-channel switching valve. The second multi-channel switching valve is used to control the liquid output from the first multi-channel switching valve to be communicated with the second valve assembly; The second multi-channel switching valve includes a second common channel and a plurality of second interfaces respectively communicated with the second common channel. The second common channel is communicated with the first common channel. At least one of the second interfaces is communicated with the second valve assembly.

4. The liquid adding device according to claim 3, characterized in that, The second valve assembly includes a plurality of electromagnetic valves. The plurality of electromagnetic valves are respectively communicated with the plurality of second interfaces in a one-to-one correspondence. The number of the driving pumps is multiple. The multiple driving pumps are respectively connected to the plurality of electromagnetic valves in a one-to-one correspondence; The number of the liquid adding needles is one. The liquid adding needle can be communicated with at least one of the electromagnetic valves; or, the number of the liquid adding needles is multiple. One of the liquid adding needles can be communicated with at least one of the electromagnetic valves, and / or the multiple liquid adding needles can be communicated with one of the electromagnetic valves.

5. The liquid adding device according to claim 1, characterized in that, The liquid adding needle includes a first liquid adding needle. The first liquid adding needle includes a first joint, a first needle body and a first needle tip connected in sequence. The first joint connects the liquid supply device and the first needle body. The first needle tip is arranged parallel to the first needle body; and / or, The liquid adding needle includes a second liquid adding needle. The second liquid adding needle includes a second joint, a second needle body and a second needle tip connected in sequence. The second joint connects the liquid supply device and the second needle body. The second needle tip is arranged obliquely with respect to the second needle body.

6. The liquid adding device according to claim 1, wherein, The liquid adding device further includes a rotation driving mechanism and a container seat. The rotation driving mechanism is connected to the container seat and can drive the container seat to rotate. The container seat is used for carrying the liquid receiving container and driving the liquid receiving container to rotate around its own axis.

7. The liquid adding device according to claim 1, characterized in that, The liquid adding device further includes a moving device and a support frame. The liquid supply device and the moving device are installed on the support frame. The liquid adding needle is installed on the moving device. The moving device is used for driving the liquid adding needle to move in at least one degree of freedom.

8. The liquid adding device according to claim 7, characterized in that The moving device includes a first moving member, a second moving member and a third moving member. The first moving member is installed on the support frame. The second moving member is installed on the first moving member. The third moving member is installed on the second moving member. The liquid adding needle is installed on the third moving member. The first moving member is used for driving the second moving member, the third moving member and the liquid adding needle to move in a first direction. The second moving member is used for driving the third moving member and the liquid adding needle to move in a second direction. The third moving member is used for driving the liquid adding needle to move in a third direction. The first direction is different from the second direction. The second direction is different from the third direction. The third direction is different from the first direction.

9. The liquid adding device according to any one of claims 1-8, characterized in that, The liquid adding device further includes a cleaning device, which is used for cleaning the liquid adding needle. The cleaning device includes an overflow tank and a cleaning tank. The cleaning tank is received in the overflow tank. At least part of the outer side wall of the cleaning tank is spaced from at least part of the inner side wall of the overflow tank. The cleaning tank includes an upper opening for the liquid adding needle to extend into and a cleaning channel for cleaning the liquid adding needle. The cleaning channel is communicated with the upper opening. The overflow tank includes an upper opening communicated with the upper opening, a liquid outlet for draining liquid and an overflow chamber communicating the upper opening with the liquid outlet. The liquid outlet penetrates the bottom wall of the overflow tank. At least part of the inner side wall or the bottom wall of the overflow chamber is inclined in the direction from the upper opening to the liquid outlet. The cleaning tank is located on the inclined inner side wall or bottom wall in the overflow chamber and close to the liquid outlet.

10. The liquid adding device according to claim 9, characterized in that, The cleaning tank includes a first cleaning tank and a second cleaning tank. The first cleaning tank and the second cleaning tank are spaced in the overflow tank. The first cleaning tank includes a first upper opening for the liquid adding needle to extend into, a first liquid outlet hole for draining liquid and a first cleaning channel communicating the first upper opening with the first liquid outlet hole. The first upper opening and the first liquid outlet hole are oppositely arranged. The size of the first liquid outlet hole is smaller than that of the first upper opening. The first liquid outlet hole penetrates the bottom wall of the overflow tank and is spaced from the liquid outlet. The second cleaning tank includes a second upper opening for the liquid adding needle to extend into, a second liquid outlet hole for draining liquid and a second cleaning channel communicating the second upper opening with the second liquid outlet hole. The second upper opening and the second liquid outlet hole are oppositely arranged. The size of the second liquid outlet hole is smaller than that of the second upper opening. The second liquid outlet hole penetrates the bottom wall of the overflow tank and is spaced from the liquid outlet. The size of the second upper opening is larger than that of the first upper opening, and the radial dimension of the second cleaning channel is larger than that of the first cleaning channel.

11. The liquid adding device according to claim 10, wherein, The cleaning device further includes a liquid collecting tank, which is connected to one end of the bottom wall of the overflow tank; the liquid collecting tank has a communicating liquid collecting cavity and a liquid discharge port, the liquid collecting cavity communicates with the liquid outlet, the first liquid discharge hole and the second liquid discharge hole, and the liquid discharge port is used to communicate with a liquid discharge pipeline.

12. The liquid adding device according to any one of claims 1-8, characterized in that, The liquid adding device further includes a detection device for detecting the liquid adding condition in the liquid receiving container.

13. The liquid adding device according to claim 12, wherein, The detection device includes a camera and a light source. The camera is movably arranged, and the light source is movably arranged; the liquid receiving container is located between the camera and the light source. The camera is used to obtain the liquid adding condition in the liquid receiving container, and the light source is used to cooperate with the camera to obtain the liquid adding condition in the liquid receiving container.

14. An experimental system, characterized in that, Comprising: The liquid adding device according to any one of claims 1 to 13.

15. The experimental system according to claim 14, wherein The experimental system further includes a handling device for picking up and placing the liquid receiving container on the liquid adding device.

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