Multi-channel liquid adding device

Abstract

The utility model relates to the technical field of liquid adding devices, and provides a multi-channel liquid adding device which comprises a liquid storage tank, a temporary storage bin and a liquid adding opening which are communicated in sequence. A liquid outlet is formed in the top of the liquid storage tank and is communicated with the temporary storage bin through a liquid feeding pump; the number of the liquid adding openings is multiple, each liquid adding opening is communicated with the temporary storage bin through a liquid adding pipe, and the liquid adding pipe is further communicated with an infusion pump; the system further comprises a controller, the signal input end of the controller is connected with a control panel, and the control output end of the controller is connected with the liquid feeding pump and the liquid extraction pump. The liquid adding device has the advantages that liquid can be added to a plurality of samples at a time, different channels can be flexibly and conveniently switched, different experiment requirements are met, meanwhile, the temporary storage bin is arranged, when liquid needs to be added frequently, the frequency of sucking liquid from a stock solution container frequently is reduced, operation time is saved, and then the overall working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of liquid adding device, specifically, relate to a multichannel liquid adding device. BACKGROUND

[0002] In the laboratory environment, the accurate measurement and transfer of liquid is a very common operation. In the early experimental operation, it may be more dependent on simple dropper or glass gauge etc. With the development of scientific research, the accuracy, convenience and repeatability of liquid operation are put forward higher requirements. Single channel liquid adding device emerges as the times require, it is developed to meet the basic, relatively simple liquid processing needs in the laboratory.

[0003] In some specific industries, such as some small biopharmaceutical enterprises in the initial research and development stage, or the basic biological experiment teaching in school, the simplicity and ease of use of single channel liquid adding device are its advantages. These scenarios may not need complex multichannel or high throughput liquid handling equipment, and single channel liquid adding device can well adapt to the operation of small amount of addition of cell culture solution, configuration of buffer solution etc.

[0004] But in the case of processing multiple samples or a large amount of liquid distribution, the low throughput problem of single channel liquid adding device is very obvious. For example, in high throughput drug screening experiments, it may be necessary to add reagents to hundreds of microwell plate holes at the same time. Single channel liquid adding device can only operate hole by hole, which will greatly prolong the experimental time. And the operation of single channel liquid adding device depends on manual operation, in the long operation process, the fatigue of the operator, the stability of the hand and other human factors will affect the accuracy of liquid adding. And different operators have different operation habits, such as the force and speed of pressing the liquid adding device button, which will also lead to inaccurate liquid adding. This fluctuation of accuracy is very unfavorable in some experiments with very high precision requirements. SUMMARY

[0005] The utility model provides a kind of multichannel liquid adding device, can add liquid to multiple samples at one time, and flexibly, conveniently switch different channels, meet different experimental needs, simultaneously have temporary storage bin, when needing to frequently add liquid, reduce the number of frequently sucking liquid from stock solution container, save operation time, and then improve overall work efficiency.

[0006] Therefore, the technical scheme adopted is as follows:

[0007] A multi-channel liquid adding device comprises a liquid storage tank, a temporary storage bin and a liquid adding port in sequence; the top of the liquid storage tank is provided with a liquid outlet, and the liquid outlet is communicated with the temporary storage bin through a liquid feeding pump; the liquid adding port has a plurality of liquid adding ports, and each liquid adding port is communicated with the temporary storage bin through a liquid adding pipe, and the liquid adding pipe is further communicated with a liquid pumping pump; and the device further comprises a controller, and the signal input end of the controller is connected with a control panel, and the control output end is connected with the liquid feeding pump and the liquid pumping pump.

[0008] Further technical solutions are that the temporary storage bin is a conical structure with a diameter gradually decreasing from top to bottom, and the liquid adding pipes are all communicated with the bottom of the temporary storage bin.

[0009] Further technical solutions are that the bottom of the liquid adding pipe is fixed with a connecting block, the connecting block is provided with a plurality of vertically arranged connecting holes, each liquid adding pipe is inserted into one connecting hole and fixedly communicated with the connecting hole.

[0010] Further technical solutions are that the liquid adding pipe comprises a connecting pipe and a transmission pipe, the connecting pipe is inserted into the connecting hole, and the diameter of the transmission pipe is larger than that of the connecting pipe.

[0011] Further technical solutions are that after the liquid adding pipe is inserted into the connecting hole, the top end of the liquid adding pipe is lower than the upper end surface of the connecting hole.

[0012] Further technical solutions are that the liquid feeding pump and the temporary storage bin are provided with a transmission channel, and the transmission channel is located at the top of the temporary storage bin.

[0013] Further technical solutions are that the bottom of the temporary storage bin is fixed with a supporting block, and a plurality of liquid pumping pumps are fixed on the supporting block at equal intervals, the liquid outlet is located at the bottom of the supporting block, and a plurality of liquid adding pipes are arranged in the supporting block.

[0014] The working principle and beneficial effects of the present application are as follows:

[0015] 1. The liquid adding device has a plurality of liquid adding ports, compared with the traditional single-channel liquid adding device, the liquid adding device can process multiple samples at the same time, and add liquid to multiple samples at one time, thereby greatly reducing the operation times and time.

[0016] 2. Through the controller and the liquid pumping pump, each liquid adding port can accurately suck and release the same volume of liquid, thereby ensuring the accuracy and consistency of liquid adding, and reducing the possibility of affecting the experimental results due to different liquid adding amounts. Moreover, the heater can autonomously select different liquid adding ports, so that different liquid adding channels can be switched more flexibly and conveniently, and more liquid adding requirements can be met.

[0017] 3、The liquid adding device has a temporary storage bin, which can store a certain amount of liquid in advance. When liquid needs to be added frequently, the number of times of sucking liquid from the liquid storage tank is reduced, the operation time is saved, and the overall work efficiency is improved. By extracting the required amount of liquid in advance into the temporary storage bin, the volume of the output liquid can be more accurately grasped, and the error that may be caused by directly extracting from the liquid storage tank is reduced, which is particularly important for experiments or production links that require high-precision liquid addition.

[0018] At the same time, frequent extraction of liquid from the original liquid container may cause problems such as shaking, evaporation or contamination of the original liquid. The use of a temporary storage bin can reduce direct operation of the original liquid container, reduce the impact of these adverse factors, and ensure the stability and purity of the original liquid. BRIEF DESCRIPTION OF DRAWINGS

[0019] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0020] Figure 1 The figure is a schematic diagram of the overall structure of the application;

[0021] Figure 2 The figure is a schematic diagram of the structure of the supporting block described in the application;

[0022] Figure 3 The figure is a top view of the structure of the temporary storage bin described in the application;

[0023] Figure 4 The figure is a sectional view of the structure of the temporary storage bin described in the application;

[0024] Figure 5 The figure is Figure 4 The figure is an enlarged schematic diagram of part A;

[0025] Figure 6 The figure is a schematic diagram of the structure of the liquid adding pipe described in the application.

[0026] In the figure: 1, liquid storage tank; 11, liquid feeding pump; 12, transmission channel; 2, temporary storage bin; 3, liquid adding port; 31, liquid adding pipe; 311, connecting pipe; 312, transmission pipe; 32, liquid pumping pump; 33, connecting block; 331, connecting hole; 4, control panel; 5, supporting block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the application will be described clearly and completely below in combination with the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are involved in the scope of protection of the application.

[0028] AsFigures 1-6 As shown, a multi-channel liquid dispenser includes a storage tank 1, a temporary storage chamber 2, and a liquid inlet 3 connected in sequence. The top of the storage tank 1 has a liquid outlet, which is connected to the temporary storage chamber 2 via a liquid supply pump 11. There are several liquid inlets 3, and each liquid inlet 3 is connected to the temporary storage chamber 2 via a liquid supply pipe 31. A liquid pump 32 is also connected to the liquid supply pipe 31. The dispenser also includes a controller, the signal input terminal of which is connected to a control panel 4, and the control output terminal is connected to the liquid supply pump 11 and the liquid pump 32.

[0029] The liquid dispenser's storage tank 1 stores the stock solution. The supply pump 11 draws the stock solution from the storage tank 1 and sends it to the temporary storage chamber 2. One end of the dispensing pipe 31 is connected to the temporary storage chamber 2, and the other end is connected to the dispensing port 3. The extraction pump 32 draws the stock solution from the temporary storage chamber 2 and delivers it through the dispensing pipe 31 to the dispensing port 3. The dispensing port 3 then adds the stock solution to various reagent bottles. The entire process is controlled by a controller, which can adjust the delivery speed and time of the supply pump 11 and the extraction pump 32 according to requirements, and can also control each extraction pump 32 individually.

[0030] like Figure 2 As shown, compared with the traditional single-channel liquid dispenser, this liquid dispenser has multiple liquid inlets 3 and liquid dispensing tubes 31, and can process multiple samples at the same time. For example, when a large number of samples need to be dispensed, multiple samples can be dispensed at once, which greatly reduces the number of operations and time.

[0031] Furthermore, each pump 32 can precisely draw and release the same volume of liquid, ensuring the accuracy and consistency of liquid addition and reducing the possibility of the experimental results being affected by different liquid addition volumes.

[0032] Meanwhile, the multiple liquid filling ports 3 are integrated together, which saves experimental bench space or workspace to a certain extent compared to using multiple single-channel liquid fillers.

[0033] Especially in some tasks that require repeated addition of liquids, this liquid dispenser can replace the experimenter in completing some of the work, reducing the experimenter's workload and ensuring the accuracy and consistency of the added reagents to a certain extent. For example, during long-term experiments, it can reduce human error and operational mistakes caused by fatigue.

[0034] like Figures 3-4 The temporary storage tank 2 shown can store a certain amount of liquid in advance. When frequent liquid addition is required, it reduces the number of times liquid needs to be drawn from the storage tank 1, saving operation time and thus improving overall work efficiency. For example, in large-scale experiments or production processes, liquid addition operations can be performed quickly without waiting to draw liquid from the original source each time.

[0035] When the liquid tank 1 is replaced or replenished, the liquid in the temporary storage 2 can continue to be supplied, ensuring that the liquid addition process will not be interrupted, maintaining the continuity of the work. For example, in some uninterrupted liquid addition processes, the temporary storage 2 plays a good buffering role, avoiding the impact of the progress due to the supply problem of the original liquid.

[0036] At the same time, the temporary storage 2 can more accurately control the amount of liquid added each time. By extracting the required liquid addition amount in advance into the temporary storage 2, the volume of the output liquid can be more accurately grasped, reducing the errors that may be caused by directly extracting from the liquid tank 1, which is particularly important for experiments or production links that require high-precision liquid addition. Moreover, frequent extraction of liquid from the original liquid container can cause problems such as shaking, evaporation, or contamination of the original liquid. Using the temporary storage 2 can reduce direct operation of the original liquid container, reduce the impact of these adverse factors, and ensure the stability and purity of the original liquid.

[0037] As shown in Figure 4 , the temporary storage 2 is a conical structure with a diameter gradually decreasing from top to bottom, and the liquid addition pipes 31 are all connected at the bottom of the temporary storage 2. The conical structure can make the original liquid affected by gravity and all converge to the bottom of the temporary storage 2, facilitating extraction by the liquid addition pipes 31.

[0038] As shown in Figure 3 and Figure 5 , the bottom of the liquid addition pipe 31 is fixed with a connecting block 33, and a plurality of vertically arranged connecting holes 331 are formed on the connecting block 33. Each liquid addition pipe 31 is inserted into one of the connecting holes 331 and fixedly connected therewith. Moreover, after the liquid addition pipe 31 is inserted into the connecting hole 331, the top end thereof is lower than the upper end surface of the connecting hole 331, so that the upper half of the connecting hole 331 will be advanced into a section of liquid. When the liquid addition pipe 31 is extracted, it is equivalent to each liquid addition pipe 31 being extracted from the connecting hole 331 where it is located, ensuring the continuity of the liquid supply. As shown in Figure 1 , in order to also ensure the continuity of the liquid supply, a transmission channel 12 is provided between the liquid supply pump 11 and the temporary storage 2, and the transmission channel 12 is located at the top of the temporary storage 2.

[0039] As shown in Figure 6 , the liquid addition pipe 31 includes a connecting pipe 311 and a transmission pipe 312. The connecting pipe 311 is inserted into the connecting hole 331, and the diameter of the transmission pipe 312 is larger than that of the connecting pipe 311. When the liquid addition pipe 31 is used for liquid absorption, the connecting pipe 311 has a small diameter, which can facilitate liquid absorption from the bottom of the temporary storage 2. After absorption, the liquid flows into the transmission pipe 312, and the transmission pipe 312 has a large diameter, which can increase the efficiency of liquid supply.

[0040] As shown in Figure 2As shown, the bottom of the temporary storage bin 2 is fixed with a supporting block 5, and several liquid pumping pumps 32 are fixed on the supporting block 5 at intervals, the liquid outlet is located at the bottom of the supporting block 5, and several liquid adding pipes 31 are arranged inside the supporting block 5, the supporting block 5 is used for accommodating various pipelines, ensuring the neatness of the workbench, and supporting the stability of the entire liquid adding device.

[0041] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-channel liquid additive dispenser characterized by, Include: Liquid tank (1), temporary storage warehouse (2) and liquid inlet (3) are communicated in turn; The top of the liquid tank (1) is provided with a liquid outlet, and the liquid outlet is communicated with the temporary storage warehouse (2) through a liquid pump (11); The liquid inlet (3) has a plurality of liquid inlets (3), and each liquid inlet (3) is communicated with the temporary storage warehouse (2) through a liquid inlet pipe (31), and the liquid inlet pipe (31) is also communicated with a liquid pump (32). It also includes a controller, the signal input end of the controller is connected with the control panel (4), the control output end is connected with the liquid pump (11) and the liquid pump (32).

2. A multi-channel liquid additive injector according to claim 1, wherein The temporary storage warehouse (2) is a conical structure with gradually decreasing diameter from top to bottom, and the liquid inlet pipe (31) is communicated with the bottom of the temporary storage warehouse (2).

3. A multi-channel liquid additive injector according to claim 1, wherein The bottom of the liquid inlet pipe (31) is fixed with a connecting block (33), a plurality of vertical connecting holes (331) are formed in the connecting block (33), each liquid inlet pipe (31) is inserted into one connecting hole (331) and fixed with it.

4. A multi-channel liquid additive injector according to claim 3, wherein The liquid inlet pipe (31) includes a connecting pipe (311) and a transmission pipe (312), the connecting pipe (311) is inserted into the connecting hole (331), and the diameter of the transmission pipe (312) is greater than that of the connecting pipe (311).

5. A multi-channel liquid additive injector according to claim 3, wherein After the liquid inlet pipe (31) is inserted into the connecting hole (331), the top end is lower than the upper end surface of the connecting hole (331).

6. A multi-channel liquid additive injector according to claim 2, wherein The liquid pump (11) and the temporary storage warehouse (2) have a transmission channel (12), and the transmission channel (12) is located at the top of the temporary storage warehouse (2).

7. A multi-channel liquid additive injector as defined in claim 1, wherein The bottom of the temporary storage warehouse (2) is fixed with a supporting block (5), a plurality of liquid pumps (32) are fixed on the supporting block (5) at equal intervals, the liquid outlet is located at the bottom of the supporting block (5), and a plurality of liquid inlet pipes (31) are arranged in the supporting block (5).

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