Liquid level balance stabilizing device and pipettor

Abstract

The application provides a liquid level balance stabilizing device and a pipetting machine. The liquid level balance stabilizing device comprises a liquid delivery driver and a pipetting assembly; the pipetting assembly comprises a pipetting support bracket and a liquid level balance disc; the liquid level balance disc is arranged on the pipetting support bracket; the liquid level balance disc is provided with a liquid storage groove and a backflow groove; the edge top surface of the liquid storage groove is higher than the bottom of the backflow groove; the liquid inlet pipe of the liquid delivery driver is communicated with the liquid storage groove; and the backflow groove is communicated with a liquid storage container. During the liquid taking process of a pipetting head, when the liquid in the liquid storage groove overflows, the overflowed liquid enters the backflow groove and is recovered into the liquid storage container through the backflow groove, and then the liquid delivery driver supplements the liquid in the liquid storage groove, and the overflowed liquid is recovered into the liquid storage container through the backflow groove again during the supplementing process, so that the liquid level of the liquid storage groove is balanced and stabilized, the empty taking or bubble taking of the pipetting module is avoided, the liquid taking inaccuracy is avoided, the liquid level stability is effectively improved, and the liquid taking accuracy is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipetting devices, in particular to a liquid level balance stabilizing device and a pipetting machine. BACKGROUND

[0002] Due to the evolution of medical technology, hospitals can find more and more information from the blood of patients to help doctors understand why the patient is infected with a disease or bacteria, to determine whether the patient's physiological function and function are normal, and to provide doctors with references for etiology and medical methods. Therefore, the number of patients who go to hospitals or health centers for blood tests is increasing. For batch blood tests, a pipetting machine is usually used. The pipetting machine has multiple pipettors and is commonly used for batch removal of small or micro amounts of liquid. The pipetting machine is a precision instrument that must be handled and stored carefully to prevent damage and affect its range.

[0003] However, the liquid level of the conventional pipetting machine often fluctuates after pipetting, which can generate air bubbles. The air bubbles can cause inaccurate liquid suction or injection, i.e., the liquid level cannot be kept stable, which can lead to subsequent emptying and thus poor pipetting efficiency. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art and provide a liquid level balance stabilizing device and a pipetting machine that effectively improve the stability of the liquid level.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] A liquid level balance stabilizing device includes a liquid delivery driver and a pipetting assembly. The input end of the liquid delivery driver is used to communicate with a liquid storage container. The pipetting assembly includes a pipetting support bracket and a liquid level balance disc. The liquid level balance disc is arranged on the pipetting support bracket. The liquid level balance disc is provided with a liquid storage groove and a backflow groove. The openings of the liquid storage groove and the backflow groove are used to face the pipetting suction head of the pipetting module. The edge top surface of the liquid storage groove is higher than the bottom of the backflow groove. The liquid inlet pipe of the liquid delivery driver communicates with the liquid storage groove to supplement the liquid to be taken in the liquid storage container into the liquid storage groove. The backflow groove communicates with the liquid storage container to recover the liquid to be taken that flows from the liquid storage groove to the backflow groove.

[0007] In one embodiment, the backflow groove is arranged around the liquid storage groove.

[0008] In one of the embodiments, the liquid level balance disc comprises a balance base and a liquid separation plate, the balance base is connected with the pipetting support bracket, the liquid storage tank and the backflow groove are located on the balance base, the liquid separation plate is connected with the balance base, and the liquid separation plate is located between the liquid storage tank and the backflow groove to separate the liquid storage tank and the backflow groove.

[0009] In one of the embodiments, the pipetting support bracket is provided with a mounting clamping groove, and at least part of the balance base is clamped in the mounting clamping groove.

[0010] In one of the embodiments, the liquid level balance disc is provided with a liquid inlet channel, and the liquid inlet channel is in communication with the liquid inlet pipe of the liquid delivery driver and the liquid storage tank, respectively.

[0011] In one of the embodiments, the liquid level balance disc is provided with a liquid outlet channel, and the liquid outlet channel is in communication with the liquid storage container and the backflow groove, respectively.

[0012] In one of the embodiments, the liquid level balance disc is provided with a liquid overflow guide groove in communication with the backflow groove, and the liquid overflow guide groove is also in communication with the liquid outlet channel.

[0013] In one of the embodiments, the liquid level balance disc is also provided with a liquid overflow buffer groove in communication with the liquid storage container, a sidewall of the liquid overflow buffer groove is provided with a groove top overflow discharge port, the groove top overflow discharge port is in communication with the backflow groove, and the groove top overflow discharge port is used to guide part of the liquid overflowing from the liquid storage tank and the backflow groove into the liquid overflow buffer groove.

[0014] In one of the embodiments, the liquid level balance disc is also provided with a liquid overflow discharge port in communication with the liquid overflow buffer groove, and the liquid overflow discharge port is also in communication with the liquid storage container.

[0015] A pipetting machine comprises a liquid storage container, a multi-axis linear movement module, a pipetting module and the liquid level balance and stabilization device of any one of the above embodiments, the liquid storage container is used to store liquid to be taken, the liquid storage container is in communication with the liquid delivery driver and the backflow groove, respectively, the multi-axis linear movement module is connected with the pipetting module to move the pipetting module in multiple directions, and a pipetting suction head of the pipetting module faces the liquid storage tank to suck the liquid to be taken in the liquid storage tank.

[0016] Compared with the prior art, the present application has at least the following advantages:

[0017] In the liquid taking process of the pipette tip, when the liquid in the liquid storage tank overflows, the overflowed liquid enters the backflow groove and is recovered to the liquid storage container through the backflow groove, and then the liquid delivery driver replenishes the liquid in the liquid storage tank, and in the process of replenishment, the overflowed liquid is recovered to the liquid storage container through the backflow groove again, at this time, the liquid level of the liquid storage tank is always kept flush with the top surface of the liquid storage tank, so that the liquid level of the liquid storage tank is balanced and stable, avoiding the empty taking or bubble taking of the liquid taking module, causing the liquid taking to be inaccurate, effectively improving the liquid level stability and ensuring the accuracy of liquid taking. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0019] Figure 1 It is a schematic view of the liquid level balance stabilizing device in an embodiment.

[0020] Figure 2 It is a schematic view of the liquid level balance stabilizing device in an embodiment. Figure 1 It is a schematic view of the liquid level balance stabilizing device in an embodiment.

[0021] Figure 3 It is a schematic view of the liquid level balance stabilizing device in an embodiment. Figure 1 It is a sectional view of the liquid level balance stabilizing device in an embodiment along the A-A direction.

[0022] Figure 4 It is a sectional view of the liquid level balance stabilizing device in an embodiment along the A-A direction. Figure 3 It is an enlarged schematic view of the sectional view at A1.

[0023] Figure 5 It is a schematic view of the liquid taking machine in an embodiment. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein, the terms "vertical", "horizontal", "left", "right", and the like are merely used for the purpose of illustration and are not intended to be limiting.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] The present application relates to a liquid level balance stabilizing device. In one embodiment, the liquid level balance stabilizing device comprises a liquid delivery driver and a liquid transfer assembly. The input end of the liquid delivery driver is configured to communicate with a liquid storage container. The liquid transfer assembly comprises a liquid transfer support bracket and a liquid level balance disc. The liquid level balance disc is disposed on the liquid transfer support bracket. The liquid level balance disc has a liquid storage groove and a backflow groove. The liquid storage groove and the backflow groove are configured to communicate with a liquid transfer tip of a liquid transfer module. The edge top surface of the liquid storage groove is higher than the bottom of the backflow groove. The liquid delivery driver has a liquid inlet pipe configured to communicate with the liquid storage groove to supplement the liquid storage container with liquid to be taken from the liquid storage container into the liquid storage groove. The backflow groove is configured to communicate with the liquid storage container to recover the liquid to be taken from the liquid storage groove that overflows into the backflow groove. During the liquid taking process of the liquid transfer tip, when the liquid in the liquid storage groove overflows, the overflowing liquid enters the backflow groove and is recovered into the liquid storage container through the backflow groove. Then, the liquid delivery driver supplements the liquid storage groove with liquid. During the supplementing process, the overflowing liquid is recovered into the liquid storage container through the backflow groove. At this time, the liquid level of the liquid storage groove is always kept flush with the top surface of the liquid storage groove, so that the liquid level of the liquid storage groove is balanced and stabilized, and the liquid level stability is effectively improved.

[0028] Referring to Figure 1 which is a structural schematic diagram of the liquid level balance stabilizing device according to an embodiment of the present application.

[0029] The liquid level balance stabilizing device 10 according to an embodiment comprises a liquid delivery driver 100 and a liquid transfer assembly 200. The input end of the liquid delivery driver 100 is configured to communicate with a liquid storage container. The liquid transfer assembly 200 comprises a liquid transfer support bracket 210 and a liquid level balance disc 220. The liquid level balance disc 220 is disposed on the liquid transfer support bracket 210. Referring to Figure 2The liquid level balance disc 220 is provided with a liquid storage groove 202 and a backflow groove 204. The liquid storage groove 202 and the backflow groove 204 are open to the pipette tip of the pipetting module, and the edge top surface of the liquid storage groove 202 is higher than the bottom of the backflow groove 204. The liquid inlet pipe of the liquid delivery driver 100 is in communication with the liquid storage groove 202, and is used to supplement the liquid to be taken from the liquid storage container into the liquid storage groove 202. The backflow groove 204 is in communication with the liquid storage container, so as to recover the liquid to be taken that overflows from the liquid storage groove 202 into the backflow groove 204.

[0030] In the embodiment, during the process of taking liquid by the pipette tip, when the liquid in the liquid storage groove 202 overflows, the overflowing liquid enters the backflow groove 204 and is recovered into the liquid storage container through the backflow groove 204. Then, the liquid delivery driver 100 supplements liquid into the liquid storage groove 202, and the overflowing liquid is recovered into the liquid storage container through the backflow groove 204 again during the process of supplementing. At this time, the liquid level of the liquid storage groove 202 is always kept flush with the top surface of the liquid storage groove 202, so that the liquid level of the liquid storage groove 202 is balanced and stable, and the empty taking of the pipetting module is avoided, and the liquid level stability is effectively improved.

[0031] In one of the embodiments, referring to Figure 2 The backflow groove 204 is arranged around the liquid storage groove 202. In the embodiment, the backflow groove 204 is located at the edge of the liquid storage groove 202, and is arranged separately from the liquid storage groove 202. When the liquid in the liquid storage groove 202 overflows, the backflow groove 204 collects the overflowing liquid to avoid liquid overflow, and also ensures the stable liquid level of the liquid in the liquid storage groove 202. The backflow groove 204 is distributed around the liquid storage groove 202, specifically, the backflow groove 204 completely surrounds the liquid storage groove 202, so that the liquid overflowing in any direction of the liquid storage groove 202 can enter the backflow groove 204, so as to improve the recovery amount of the overflowing liquid in the liquid storage groove 202.

[0032] In one of the embodiments, referring to Figure 1The liquid level balance disc 220 comprises a balance bottom disc 222 and a liquid separation plate 224. The balance bottom disc 222 is connected with the pipetting support bracket 210, and the liquid storage groove 202 and the backflow groove 204 are located on the balance bottom disc 222. The liquid separation plate 224 is connected with the balance bottom disc 222, and is located between the liquid storage groove 202 and the backflow groove 204 to separate the liquid storage groove 202 and the backflow groove 204. In the embodiment, the balance bottom disc 222 serves as a mounting base of the liquid separation plate 224. The liquid separation plate 224 separates the liquid storage groove 202 and the backflow groove 204, and serves as a separation component between the liquid storage groove 202 and the backflow groove 204. The height of the liquid separation plate 224 serves as the liquid storage height in the liquid storage groove 202, so that the liquid in the liquid storage groove 202 and the backflow groove 204 is stored separately. In this way, after the liquid in the liquid storage groove 202 overflows and enters the backflow groove 204 through the liquid separation plate 224, the liquid in the liquid storage groove 202 can be stably maintained at a specified liquid level.

[0033] Further, the pipetting support bracket 210 is provided with a mounting clamping groove 206, and at least part of the balance bottom disc 222 is clamped in the mounting clamping groove 206. In the embodiment, the opening of the mounting clamping groove 206 faces the pipetting module, and the mounting clamping groove 206 is used for accommodating part of the balance bottom disc 222, so that the balance bottom disc 222 is clamped in the mounting clamping groove 206, and the liquid level balance disc 220 and the pipetting support bracket 210 are connected, thereby facilitating replacement and maintenance of the liquid level balance disc 220.

[0034] In one of the embodiments, referring to Figure 3 The liquid level balance disc 220 is provided with a liquid inlet channel 208, and the liquid inlet channel 208 is in communication with the liquid inlet pipe of the infusion driver 100 and the liquid storage groove 202 respectively. In the embodiment, the liquid inlet channel 208 is located on the liquid level balance disc 220, and specifically, the liquid inlet channel 208 is located on the side wall of the liquid level balance disc 220, so that the liquid inlet channel 208 remains linear, thereby facilitating manufacturing of the liquid inlet channel 208 on the liquid level balance disc 220. One end of the liquid inlet channel 208 is in communication with the liquid storage groove 202, and the other end of the liquid inlet channel 208 is in communication with the liquid inlet pipe of the infusion driver 100, so as to connect the inside of the liquid storage groove 202 with the liquid storage container, thereby facilitating timely supplement of the liquid in the liquid storage container to the liquid storage groove 202.

[0035] In one of the embodiments, referring to Figure 3The liquid level balance disc 220 is provided with a liquid outlet channel 201, which is in communication with the liquid storage container and the backflow groove 204. In this embodiment, the liquid outlet channel 201 is located on the side wall of the liquid level balance disc 220, so that the liquid outlet channel 201 is kept in a straight line, facilitating the manufacture of the liquid outlet channel 201 on the liquid level balance disc 220. One end of the liquid outlet channel 201 is in communication with the backflow groove 204, and the other end of the liquid outlet channel 201 is in communication with the liquid storage container, so as to connect the inside of the backflow groove 204 with the liquid storage container, facilitating the timely recovery of the liquid overflowing from the liquid storage container into the backflow groove 204.

[0036] Further, the liquid level balance disc 220 is provided with an overflow guiding groove 203 in communication with the backflow groove 204, and the overflow guiding groove 203 is also in communication with the liquid outlet channel 201. In this embodiment, the overflow guiding groove 203 is located at the bottom of the backflow groove 204, and the overflow guiding groove 203 is in communication with the backflow groove 204, so as to guide the liquid in the backflow groove 204 to the liquid outlet channel 201, facilitating the rapid discharge of the liquid in the backflow groove 204, and improving the liquid recovery efficiency.

[0037] In one embodiment, referring to Figure 2 The liquid level balance disc 220 is also provided with an overflow buffer groove 205 in communication with the liquid storage container, and the side wall of the overflow buffer groove 205 is provided with a groove top overflow discharge port 207 in communication with the backflow groove 204, which is used to guide part of the liquid overflowing from the liquid storage groove 202 and the backflow groove 204 into the overflow buffer groove 205. In this embodiment, the overflow buffer groove 205 is located on the liquid level balance disc 220, and is arranged close to the backflow groove 204. The overflow buffer groove 205 is in communication with the backflow groove 204 through the groove top overflow discharge port 207, so that the liquid overflowing from the backflow groove 204 and the liquid storage groove 202 enters the overflow buffer groove 205 through the groove top overflow discharge port 207, playing a role of secondary overflow buffer, effectively reducing the probability of liquid overflow.

[0038] Further, the liquid level balance disc 220 is further provided with an overflow outlet 209 which is in communication with the overflow buffer groove 205 and the liquid storage container. In the embodiment, the overflow outlet 209 is arranged on the liquid level balance disc 220, in particular, the overflow outlet 209 is arranged close to the overflow buffer groove 205, and the overflow outlet 209 is in communication with the inside of the overflow buffer groove 205, so as to timely discharge the liquid in the overflow buffer groove 205, thereby facilitating the quick recovery of the overflow liquid in the liquid storage groove 202.

[0039] When the pipette tip of the pipette module actually takes liquid in the liquid storage groove 202, the liquid delivery driver 100 serves as a power source for the liquid delivery, and provides power for the movement of the liquid between the liquid level balance disc 220 and the liquid storage container, so as to maintain the liquid level in the liquid storage groove 202 at a stable level, and keep the liquid level in the liquid level balance disc 220 stable. However, as the number of liquid taking cycles increases, the contact time of the liquid in the air increases, and the liquid delivery driver 100 needs to squeeze the air to push when delivering the liquid, which causes the increase of the air mixed in the liquid, thereby causing the liquid in the liquid storage groove 202 to easily generate bubbles, and further causing the pipette tip to suck in some bubbles, resulting in the liquid taking amount not meeting the standard, and directly affecting the liquid taking accuracy.

[0040] In order to reduce the probability of bubbles in the liquid in the liquid storage groove 202, please refer to Figure 2 and Figure 4 The liquid level balance stabilizing device 10 further comprises a bubble removing assembly 300, the bubble removing assembly 300 comprises a stirring driving motor 310, a magnetic accessory 320 and a magnetic stirring rod 330, the magnetic stirring rod 330 is arranged in the liquid storage groove 202, the rotating shaft of the stirring driving motor 310 is connected with the magnetic accessory 320, the magnetic accessory 320 is arranged opposite to the magnetic stirring rod 330, and the magnetic accessory 320 is located on the side of the liquid level balance disc 220 which is away from the magnetic stirring rod 330, and the magnetic accessory 320 is used for magnetically rotating the magnetic stirring rod 330 to stir the liquid in the liquid storage groove 202.

[0041] In the embodiment, the magnetic stirring rod 330 and the magnetic accessory 320 are located on two sides of the liquid level balance disc 220, specifically, the magnetic stirring rod 330 and the magnetic accessory 320 are oppositely arranged with the liquid level balance disc 220 as the symmetry plane, the magnetic stirring rod 330 is located in the liquid storage tank 202, the magnetic accessory 320 is located outside the liquid storage tank 202, the magnetic stirring rod 330 is in contact with the liquid in the liquid storage tank 202, and the magnetic stirring rod 330 and the magnetic accessory 320 are symmetrically arranged by magnetic attraction. The stirring drive motor 310 serves as the power source of the magnetic accessory 320, the rotating shaft of the stirring drive motor 310 is connected with the magnetic accessory 320, for example, the polarity middle end of the magnetic accessory 320 is connected with the rotating shaft of the stirring drive motor 310, so that the magnetic accessory 320 rotates with the polarity middle end, so that the opposite ends of the magnetic accessory 320 perform circular motion, which facilitates the magnetic accessory 320 to drive the magnetic stirring rod 330 in the liquid storage tank 202 to rotate, so as to facilitate the magnetic stirring rod 330 to stir the liquid in the liquid storage tank 202, and further facilitate the air mixed in the liquid in the liquid storage tank 202 to be stirred out, thereby reducing the probability of bubbles in the liquid in the liquid storage tank 202, thereby reducing the probability of the pipette tip sucking in air bubbles, and effectively improving the liquid taking precision of the pipette tip.

[0042] Further, referring to Figure 4 , the defoaming assembly 300 further comprises a motor fixing support 340, the motor fixing support 340 is connected with the pipetting support bracket 210, the magnetic accessory 320 is located between the motor fixing support 340 and the liquid level balance disc 220, the motor fixing support 340 is provided with a through hole 302, the stirring drive motor 310 is connected with one side of the motor fixing support 340 away from the magnetic accessory 320, and the rotating shaft of the stirring drive motor 310 penetrates through the through hole 302.

[0043] In the embodiment, the motor fixing support 340 serves as the fixing base of the stirring drive motor 310, the rotating shaft of the stirring drive motor 310 is connected with the magnetic accessory 320 after penetrating through the through hole 302, so as to facilitate the stable installation of the stirring drive motor 310 on the pipetting support bracket 210. There is a gap between the motor fixing support 340 and the liquid level balance disc 220, so as to facilitate the installation of the magnetic accessory 320 between the motor fixing support 340 and the liquid level balance disc 220, to provide a rotating space for the rotation of the magnetic accessory 320, thereby facilitating the stirring drive motor 310 to drive the magnetic accessory 320 to drive the magnetic stirring rod 330 to stir the liquid in the liquid storage tank 202.

[0044] Further, please refer to Figure 4 The defoaming assembly 300 further comprises a pipette tank support plate 350 and a plurality of pipette support baffles 360, each of the pipette support baffles 360 is connected with the pipette support bracket 210, the plurality of pipette support baffles 360 commonly support the pipette tank support plate 350, and the liquid level balance disc 220 abuts against one side of the pipette tank support plate 350 which is away from the pipette support baffles 360.

[0045] In the embodiment, the pipette support baffles 360 are arranged on the pipette support bracket 210, specifically, the pipette support baffles 360 are fixed on the pipette support bracket 210, the plurality of pipette support baffles 360 are arranged in parallel, and the plurality of pipette support baffles 360 form a support plane, which facilitates supporting the pipette tank support plate 350. The liquid level balance disc 220 is arranged on the pipette tank support plate 350, and the liquid level balance disc 220 is placed on the pipette tank support plate 350, so that a larger support surface is provided for the liquid level balance disc 220, so as to improve the support force of the liquid level balance disc 220, and the liquid level balance disc 220 is stably arranged on the pipette support bracket 210.

[0046] In one of the embodiments, the application further provides a pipette machine, please refer to Figure 5The pipette machine 20 comprises a liquid storage container 400, a multi-axis linear movement module 500, a pipetting module 600, and the liquid level balance stabilizing device 10 of any of the above embodiments. The liquid storage container 400 is used to store the liquid to be taken, and is in communication with the liquid delivery driver and the backflow groove, respectively. The multi-axis linear movement module 500 is connected to the pipetting module 600 to move the pipetting module 600 in multiple directions. The pipetting tip of the pipetting module 600 faces the liquid storage groove to suck the liquid to be taken in the liquid storage groove. In this embodiment, the liquid level balance stabilizing device comprises a liquid delivery driver and a pipetting assembly. The input end of the liquid delivery driver is in communication with the liquid storage container. The pipetting assembly comprises a pipetting support bracket and a liquid level balance disc. The liquid level balance disc is arranged on the pipetting support bracket. The liquid level balance disc is provided with a liquid storage groove and a backflow groove. The openings of the liquid storage groove and the backflow groove face the pipetting tip of the pipetting module. The edge top surface of the liquid storage groove is higher than the bottom of the backflow groove. The liquid inlet pipe of the liquid delivery driver is in communication with the liquid storage groove to supplement the liquid to be taken in the liquid storage container into the liquid storage groove. The backflow groove is in communication with the liquid storage container to recover the liquid to be taken overflowing from the liquid storage groove into the backflow groove. During the liquid taking process of the pipetting tip, when the liquid in the liquid storage groove overflows, the overflowing liquid enters the backflow groove and is recovered into the liquid storage container through the backflow groove. Then, the liquid delivery driver supplements the liquid into the liquid storage groove. During the supplementing process, the overflowing liquid is recovered into the liquid storage container through the backflow groove again. At this time, the liquid level of the liquid storage groove is always kept flush with the top surface of the liquid storage groove, so that the liquid level of the liquid storage groove is balanced and stabilized, the empty taking of the pipetting module is avoided, the liquid level stability is effectively improved, and the liquid taking accuracy of the pipette machine is improved.

[0047] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A liquid level balancing and stabilizing device, characterized in that, include: An infusion actuator, wherein the input terminal of the infusion actuator is used to communicate with a storage container; A pipetting assembly includes a pipetting support bracket and a level balancing disc. The level balancing disc is mounted on the pipetting support bracket and has a storage tank and a reflux groove. The openings of the storage tank and the reflux groove face the pipetting tip of the pipetting module. The top edge of the storage tank is higher than the bottom of the reflux groove. The inlet tube of the infusion driver is connected to the storage tank to replenish the liquid to be taken from the storage container into the storage tank. The reflux groove is connected to the storage container to recover the liquid to be taken from the storage tank overflowing into the reflux groove. The liquid level balance plate includes a balance base and a liquid separator plate. The balance base is connected to the liquid transfer support bracket. The liquid storage tank and the return channel are located on the balance base. The liquid separator plate is connected to the balance base and is located between the liquid storage tank and the return channel to separate the liquid storage tank and the return channel. The liquid level balance plate is also provided with an overflow buffer tank that communicates with the liquid storage container. The side wall of the overflow buffer tank has an overflow outlet at the top of the tank, which communicates with the return channel. The overflow outlet at the top of the tank is used to guide a portion of the liquid overflowing from the liquid storage tank and the return channel into the overflow buffer tank. The liquid level balance plate is also provided with an overflow outlet that communicates with the overflow buffer tank, and the overflow outlet is also communicated with the liquid storage container. The liquid level stabilization device also includes a defoaming component, which includes a stirring drive motor, a magnetic accessory, and a magnetic stirring rod. The magnetic stirring rod is disposed in the liquid storage tank, and the magnetic accessory is used to magnetically attract and rotate the magnetic stirring rod to agitate the liquid in the liquid storage tank.

2. The liquid level balancing and stabilizing device according to claim 1, characterized in that, The reflux channel is arranged around the liquid storage tank.

3. The liquid level balancing and stabilizing device according to claim 1, characterized in that, The pipetting support bracket has a mounting slot, and at least a portion of the balance chassis is engaged within the mounting slot.

4. The liquid level balancing and stabilizing device according to claim 1, characterized in that, The liquid level balance plate has a liquid inlet channel, which is connected to the liquid inlet pipe of the liquid delivery driver and the liquid storage tank.

5. The liquid level balancing and stabilizing device according to claim 1, characterized in that, The liquid level balance plate has a liquid outlet channel, which is connected to the liquid storage container and the return channel.

6. The liquid level balancing and stabilizing device according to claim 5, characterized in that, The liquid level balance plate has an overflow outlet channel that communicates with the return groove, and the overflow outlet channel is also connected to the liquid outlet channel.

7. A pipette, characterized in that, The device includes a liquid storage container, a multi-axis linear motion module, a pipetting module, and a liquid level balancing and stabilizing device as described in any one of claims 1 to 6. The liquid storage container is used to store the liquid to be taken. The liquid storage container is connected to the infusion driver and the reflux groove, respectively. The multi-axis linear motion module is connected to the pipetting module to move the pipetting module in multiple directions. The pipetting tip of the pipetting module faces the liquid storage tank to draw the liquid to be taken from the liquid storage tank.

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