Portable high-precision trace liquid preparation device

Abstract

The utility model relates to the technical field of trace liquid preparation equipment, and discloses a portable high-precision trace liquid preparation device which comprises a liquid preparation box, an adjustable liquid preparation mechanism is fixedly connected to the inner side of the liquid preparation box, a clamping and fixing mechanism is connected to the inner side of the liquid preparation box in a sliding mode, the adjustable liquid preparation mechanism comprises a liquid preparation dropper, and the liquid preparation dropper is provided with a clamping and fixing mechanism. A piston is slidably connected to the inner side of the liquid distribution dropper, a sliding pressing block is fixedly connected to the top of the piston, a sliding rail is arranged on the inner side of the liquid distribution box, and the outer side of the sliding pressing block is slidably connected to the inner side of the sliding rail. According to the utility model, the adjusting hand wheel is rotated, the adjusting screw rod is rotated through transmission of the bevel gear, the stroke adjusting slide block is driven to move, and then the lever slide block is driven to slide in the driving lever slide groove, so that the length of a force arm of the driving lever and the stroke of the slide pressing block can be changed, and the pressing distance of a piston in the liquid distribution dropper can be accurately controlled; and the suction and discharge amount of the liquid can be accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of micro-liquid preparation equipment technology, and in particular to a portable high-precision micro-liquid preparation device. Background Technology

[0002] A liquid preparation device is used to mix different liquids in a specific ratio. It can precisely control the liquid ratio to ensure that the concentration and composition of the mixed solution meet the requirements. It is widely used in pharmaceutical research and development, chemical experiments, and biological detection. Its function is to meet the needs of scientific research and production for specific solutions, and to improve the quality of experiments and production through accurate liquid preparation. A micro-liquid preparation device mainly consists of a storage tank, a metering pump, and a mixer, which are responsible for storing the liquid, accurately metering it, and uniformly mixing it, respectively.

[0003] When using the micro-volume solution preparation device, the liquid to be prepared is first placed in the storage tank. A metering pump then extracts the liquid according to a set ratio and delivers it to a mixer for thorough mixing, ultimately obtaining the target solution. The entire operation process is convenient and efficient, enabling high-precision micro-volume solution preparation and meeting the needs of scenarios requiring high solution preparation accuracy.

[0004] In the prior art, some portable micro-liquid preparation devices have difficulty in accurately adjusting the liquid intake and output, resulting in insufficient preparation accuracy and failing to meet the requirements of high-precision micro-liquid preparation. Furthermore, the accuracy and stability of preparation are poor, and the limitations of the adjustment mechanism can easily cause preparation errors, affecting experimental and production results. Therefore, a portable high-precision micro-liquid preparation device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a portable high-precision micro-liquid preparation device, which aims to improve the problem that some existing devices are difficult to precisely adjust in terms of liquid intake and discharge volume control, resulting in insufficient liquid preparation accuracy.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A portable, high-precision micro-volume liquid preparation device includes a liquid preparation tank. An adjustable liquid preparation mechanism is fixedly connected to the inner side of the liquid preparation tank. A clamping and fixing mechanism is slidably connected to the inner side of the liquid preparation tank. The adjustable liquid preparation mechanism includes a liquid preparation dropper. A piston is slidably connected to the inner side of the liquid preparation dropper. A sliding pressing block is fixedly connected to the top of the piston. A slide rail is provided on the inner side of the liquid preparation tank. The outer side of the sliding pressing block is slidably connected to the inner side of the slide rail. A drive rod is rotatably connected to the inner side of the sliding pressing block. A drive lever is rotatably connected to the end of the drive rod away from the sliding pressing block. A shaft is fixedly connected to the end of the drive lever away from the drive rod. An arc-shaped lifting block is fixedly connected to the outer side of the shaft of the drive lever. A drive assembly is contacted at the bottom of the arc-shaped lifting block of the drive lever. A liquid volume adjustment assembly is slidably connected to the inner side of the drive lever.

[0008] As a further description of the above technical solution:

[0009] The drive assembly includes a drive motor, the outer side of which is fixedly connected to the inner side of the liquid mixing tank, and a drive cam is fixedly connected to the drive end of the drive motor. The outer side of the drive cam is in contact with the bottom of the arc-shaped lifting block of the drive lever.

[0010] As a further description of the above technical solution:

[0011] A rotating shaft is fixedly connected to the inner side of the liquid preparation tank, and an anti-detachment limiting link is rotatably connected to the outer side of the rotating shaft of the liquid preparation tank. The outer side of the anti-detachment limiting link away from the liquid preparation tank is rotatably connected to the inner side of the shaft of the drive lever.

[0012] As a further description of the above technical solution:

[0013] The liquid volume adjustment assembly includes a lever slider. The inner side of the driving lever has a groove. The outer side of the lever slider is slidably connected to the inner side of the groove of the driving lever. The outer side of the lever slider is rotatably connected to a stroke adjustment slider. The inner side of the liquid dispensing tank is fixedly connected to an adjustment frame. The inner side of the adjustment frame is rotatably connected to an adjustment screw. The inner side of the stroke adjustment slider is threaded to the outer side of the adjustment screw. The outer side of the stroke adjustment slider is slidably connected to the inner side of the adjustment frame.

[0014] As a further description of the above technical solution:

[0015] One end of the adjusting screw is fixedly connected to a bevel gear one, the outside of the liquid mixing tank is rotatably connected to an adjusting handwheel, and the outside of the rotating shaft of the adjusting handwheel is fixedly connected to a bevel gear two, the bevel gear two and the bevel gear one are meshed with each other;

[0016] As a further description of the above technical solution:

[0017] The clamping and fixing mechanism includes a guide slide rod, with both ends of the guide slide rod fixedly connected to the inner side of the liquid mixing tank. A clamping groove is provided on the inner side of the liquid mixing tank, and a liquid tank clamping plate is slidably connected to the inner side of the clamping groove. The inner side of the liquid tank clamping plate is slidably connected to the outer side of the guide slide rod, and a clamping return spring is sleeved on the outer side of the guide slide rod. One end of the clamping return spring is fixedly connected to the outer side of the liquid tank clamping plate, and the other end of the clamping return spring is fixedly connected to the inner side of the liquid mixing tank.

[0018] As a further description of the above technical solution:

[0019] The inner side of the liquid mixing tank is rotatably connected to a clamping cam, and the outer side of the liquid mixing tank is rotatably connected to a clamping handwheel. The outer side of the rotating shaft of the clamping handwheel is fixedly connected to the outer side of the clamping cam, and the outer side of the clamping cam is in contact with the side of the liquid tank clamping plate that is close to it.

[0020] As a further description of the above technical solution:

[0021] An ultrasonic vibrating base is fixedly connected to the inner side of the liquid preparation tank, and a positioning groove is provided on the top of the ultrasonic vibrating base.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the adjustable liquid dispensing mechanism drives a drive cam to rotate via a drive motor. The drive cam pushes the arc-shaped lifting block of the drive lever, causing the drive lever to rotate around the lever slider. This, in turn, causes the sliding pressing block to move within the slide rail. The sliding pressing block pushes the piston inside the liquid dispensing dropper. Simultaneously, the operator rotates the adjusting handwheel, which, through bevel gear transmission, causes the adjusting screw to rotate, moving the stroke adjusting slider. This, in turn, causes the lever slider to slide within the drive lever groove. This changes the lever arm length and the stroke of the sliding pressing block, thereby precisely controlling the downward pressing distance of the piston inside the liquid dispensing dropper, accurately controlling the intake and discharge volume of the liquid, meeting the high-precision micro-volume liquid dispensing requirements, and improving the accuracy and stability of liquid dispensing.

[0024] 2. In this utility model, the clamping and fixing mechanism rotates the clamping handwheel, which drives the clamping cam to rotate, causing the liquid tank clamping plate to slide along the guide slide rod and the clamping slide groove. Under the elastic force of the clamping return spring, the liquid tank clamping plate clamps and releases the liquid tank, thereby ensuring stable clamping of the liquid tank. This prevents the liquid tank from shifting or tipping due to the vibration of the ultrasonic vibration seat, ensuring the safe, stable and accurate operation of the liquid preparation work, and ensuring the smooth progress of the entire liquid preparation process. This provides a reliable foundation for high-precision micro-volume liquid preparation. Attached Figure Description

[0025] Figure 1This is a three-dimensional schematic diagram of a portable high-precision micro-liquid preparation device proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the adjusting handwheel of a portable high-precision micro-liquid dispensing device proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the clamping handwheel of a portable high-precision micro-liquid dispensing device proposed in this utility model;

[0029] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Liquid preparation tank; 2. Ultrasonic vibrating seat; 3. Positioning groove; 4. Drive motor; 5. Drive cam; 6. Liquid preparation dropper; 7. Sliding lower pressure block; 8. Slide rail; 9. Drive rotating rod; 10. Drive lever; 11. Lever slider; 12. Stroke adjustment slider; 13. Adjustment frame; 14. Adjustment screw; 15. Bevel gear one; 16. Bevel gear two; 17. Adjustment handwheel; 18. Anti-detachment limiting linkage; 19. Guide slide rod; 20. Clamping handwheel; 21. Clamping cam; 22. Clamping groove; 23. Liquid tank clamping plate; 24. Clamping return spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1 to 3 An embodiment of this utility model is provided: a portable high-precision micro-liquid preparation device, including a preparation box 1, which can accommodate and protect the internal mechanisms, has a handle for easy handling and wheels installed at the bottom for easy movement, an adjustable preparation mechanism is fixedly connected to the inner side of the preparation box 1, and a clamping and fixing mechanism is slidably connected to the inner side of the preparation box 1.

[0034] The adjustable liquid dispensing mechanism includes a dispensing dropper 6. A piston inside the dispensing dropper 6 fits tightly against its inner wall. Under the action of a sliding pressure block 7, the intake and discharge volume of the liquid can be precisely controlled. A piston is slidably connected to the inner side of the dispensing dropper 6, and a sliding pressure block 7 is fixedly connected to the top of the piston. The sliding pressure block 7 is the main adjustable component; by adjusting its stroke, the downward pressure distance of the piston can be changed, achieving precise control of the liquid. A slide rail 8 is provided on the inner side of the dispensing tank 1, providing precise sliding guidance for the sliding pressure block 7. The outer side of the sliding pressure block 7 is slidably connected to the inner side of the slide rail 8. A drive rod 9 is rotatably connected to the inner side of the sliding pressure block 7, transmitting power. Driven by lever 10, the sliding lower block 7 moves up and down. The end of the drive lever 9 away from the sliding lower block 7 is rotatably connected to the drive lever 10. The drive lever 10 is an important component for power conversion and transmission. By adjusting the position of the lever slider 11, which serves as its fulcrum, the stroke of one end of the drive lever 10 is changed. The end of the drive lever 10 away from the drive lever 9 is fixedly connected to a shaft. An arc-shaped lifting block is fixedly connected to the outside of the shaft of the drive lever 10. The arc-shaped lifting block cooperates with the drive cam 5 to achieve smooth lifting and lowering motion, thereby driving the drive lever 10 to rotate around the lever slider 11. The bottom of the arc-shaped lifting block of the drive lever 10 contacts the drive component. The inner side of the drive lever 10 is slidably connected to the liquid volume adjustment component.

[0035] The drive assembly includes a drive motor 4, which provides power to the entire adjustable liquid dispensing mechanism. The outer side of the drive motor 4 is fixedly connected to the inner side of the liquid dispensing tank 1. The drive end of the drive motor 4 is fixedly connected to a drive cam 5. When the drive motor 4 drives the drive cam 5 to rotate, it pushes the arc-shaped lifting block through the cam profile curve, causing the drive lever 10 to rotate around the lever slider 11, thereby realizing the up and down movement of the sliding lower block 7. The outer side of the drive cam 5 contacts the bottom of the arc-shaped lifting block of the drive lever 10.

[0036] A rotating shaft is fixedly connected to the inner side of the liquid preparation tank 1. An anti-detachment limiting link 18 is rotatably connected to the outer side of the rotating shaft of the liquid preparation tank 1. The anti-detachment limiting link 18 limits the range of motion of the drive lever 10, prevents the drive lever 10 from deviating from the normal trajectory during the movement, and enhances the stability of the entire mechanism. The outer side of the anti-detachment limiting link 18 away from the liquid preparation tank 1 is rotatably connected to the inner side of the shaft of the drive lever 10.

[0037] The liquid volume adjustment assembly includes a lever slider 11. By changing its position on the drive lever 10, the lever arm length of the drive lever 10 and the stroke of the sliding lower block 7 are adjusted, thereby achieving the adjustment of the liquid volume. A groove is provided on the inner side of the drive lever 10. The outer side of the lever slider 11 is slidably connected to the inner side of the groove of the drive lever 10. A stroke adjustment slider 12 is rotatably connected to the outer side of the lever slider 11. The stroke adjustment slider 12 is driven by the adjusting screw 14 to move the lever slider 11, thereby achieving precise adjustment of the stroke of the sliding lower block 7. An adjusting frame 13 is fixedly connected to the inner side of the liquid dispensing tank 1. The adjusting frame 13 provides sliding guidance and support for the stroke adjustment slider 12. An adjusting screw 14 is rotatably connected to the inner side of the adjusting frame 13. The adjusting screw 14 converts the rotational motion into linear motion, thereby moving the stroke adjustment slider 12. The inner side of the stroke adjustment slider 12 is threadedly connected to the outer side of the adjusting screw 14, and the outer side of the stroke adjustment slider 12 is slidably connected to the inner side of the adjusting frame 13.

[0038] One end of the adjusting screw 14 is fixedly connected to a bevel gear 15, which meshes with a bevel gear 16 to achieve power transmission and direction conversion. An adjusting handwheel 17 is rotatably connected to the outside of the liquid preparation tank 1. By rotating the adjusting handwheel 17, the operator drives the bevel gear 16 connected to it to rotate, and then through the bevel gear transmission, the adjusting screw 14 rotates to achieve adjustment of the liquid preparation volume. The outer side of the rotating shaft of the adjusting handwheel 17 is fixedly connected to a bevel gear 16, which meshes with a bevel gear 15 to transmit the rotational motion of the adjusting handwheel 17 to the adjusting screw 14. The bevel gear 16 and the bevel gear 15 are meshed with each other.

[0039] Reference Figure 1 , Figure 4 and Figure 5 The clamping and fixing mechanism includes a guide slide rod 19, which provides sliding guidance for the liquid tank clamping plate 23. Both ends of the guide slide rod 19 are fixedly connected to the inner side of the liquid mixing tank 1. A clamping groove 22 is provided on the inner side of the liquid mixing tank 1. The clamping groove 22 cooperates with the liquid tank clamping plate 23 to restrict the movement direction of the liquid tank clamping plate 23, allowing it to slide only in the groove direction. The liquid tank clamping plate 23 is slidably connected to the inner side of the clamping groove 22. The liquid tank clamping plate 23 is used to clamp and fix the liquid tank being mixed, preventing the liquid tank from vibrating due to the vibration of the ultrasonic vibration seat 2. Displacement and tilting ensure that the liquid preparation work can be carried out safely, stably and accurately. The inner side of the liquid tank clamping plate 23 is slidably connected to the outer side of the guide slide rod 19. The outer side of the guide slide rod 19 is fitted with a clamping return spring 24. The clamping return spring 24 provides a return force for the liquid tank clamping plate 23. When the clamping cam 21 is released, the liquid tank clamping plate 23 is automatically reset to maintain the clamping state of the liquid tank. One end of the clamping return spring 24 is fixedly connected to the outer side of the liquid tank clamping plate 23, and the other end of the clamping return spring 24 is fixedly connected to the inner side of the liquid preparation box 1.

[0040] A clamping cam 21 is rotatably connected to the inner side of the liquid mixing tank 1. When the clamping handwheel 20 drives the clamping cam 21 to rotate, the cam profile pushes the liquid tank clamping plate 23 to move, thereby realizing the clamping and releasing operation of the liquid tank. When the clamping cam 21 rotates to the plane at the long axis and contacts the liquid tank clamping plate 23, it can limit and fix the liquid tank clamping plate 23 to prevent it from sliding inward and clamping. A clamping handwheel 20 is rotatably connected to the outer side of the liquid mixing tank 1. The operator rotates the clamping handwheel 20 to drive the clamping cam 21 to rotate, thereby controlling the movement of the liquid tank clamping plate 23 and realizing the clamping and releasing of the liquid tank. The outer side of the rotating shaft of the clamping handwheel 20 is fixedly connected to the outer side of the clamping cam 21, and the outer side of the clamping cam 21 contacts the side of the liquid tank clamping plate 23 that is close to it.

[0041] An ultrasonic vibrating seat 2 is fixedly connected to the inside of the liquid mixing tank 1. The ultrasonic vibrating seat 2 converts electrical energy into mechanical energy through a built-in ultrasonic transducer to generate high-frequency vibration. In the process of micro-liquid mixing, ultrasonic vibration can accelerate liquid mixing, prevent liquid sedimentation, and improve the accuracy of liquid mixing. The top of the ultrasonic vibrating seat 2 is provided with a positioning groove 3, which accurately positions the liquid tank. Together with the ultrasonic vibrating seat 2, it ensures stable and efficient liquid mixing.

[0042] Working principle: First, place the liquid tank in the positioning groove 3 on the top of the ultrasonic vibration seat 2. By rotating the clamping handwheel 20, the clamping cam 21 is driven to rotate to the vertical position. At this time, the contour of the clamping cam 21 releases the support of the liquid tank clamping plate 23, so that the liquid tank clamping plate 23 slides along the guide slide rod 19 and the clamping slide groove 22, thereby allowing the liquid tank clamping plate 23 to clamp the liquid tank under the elastic force of the clamping return spring 24. When the clamping cam 21 rotates to the horizontal position, it can limit and fix the liquid tank clamping plate 23 to prevent it from sliding inward and clamping.

[0043] Next, precise dripping and volume adjustment of different solutions are performed. When a solution needs to be dripped, the drive motor 4 is started. The drive motor 4 drives the drive cam 5 to rotate. The drive cam 5 pushes the arc-shaped lifting block of the drive lever 10 through the contour curve, causing the drive lever 10 to rotate around the lever slider 11. This, in turn, drives the sliding lower block 7 to move up and down in the slide rail 8. The sliding lower block 7 pushes the piston in the liquid dispensing dropper 6, precisely controlling the intake and discharge of the liquid. To adjust the solution volume, the operator rotates the adjusting handwheel 17. The adjusting handwheel 17 drives the bevel gear 16 to rotate. Through the bevel gear transmission, the adjusting screw 14 rotates. The adjusting screw 14 drives the stroke adjusting slider 12 to move. The stroke adjusting slider 12 drives the lever slider 11 to slide in the groove of the drive lever 10, changing the lever arm length of the drive lever 10 and the stroke of the sliding lower block 7, thereby adjusting the liquid dispensing volume.

[0044] Finally, after the dripping is completed, the solution is stirred and mixed. After the micro-liquid is prepared, the ultrasonic transducer built into the ultrasonic vibrating seat 2 converts electrical energy into mechanical energy and generates high-frequency vibration to stir and mix the solution in the liquid tank, accelerate liquid mixing, prevent liquid precipitation, and improve the accuracy of liquid preparation.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable high-precision micro-volume liquid preparation device, comprising a liquid preparation tank (1), characterized in that: An adjustable dispensing mechanism is fixedly connected to the inside of the dispensing tank (1), and a clamping and fixing mechanism is slidably connected to the inside of the dispensing tank (1). The adjustable liquid dispensing mechanism includes a liquid dispensing dropper (6), a piston is slidably connected to the inner side of the liquid dispensing dropper (6), a sliding pressing block (7) is fixedly connected to the top of the piston, a slide rail (8) is provided on the inner side of the liquid dispensing tank (1), the outer side of the sliding pressing block (7) is slidably connected to the inner side of the slide rail (8), a drive rod (9) is rotatably connected to the inner side of the sliding pressing block (7), a drive lever (10) is rotatably connected to the end of the drive rod (9) away from the sliding pressing block (7), a shaft is fixedly connected to the end of the drive lever (10) away from the drive rod (9), an arc-shaped lifting block is fixedly connected to the outer side of the shaft of the drive lever (10), a drive assembly is in contact with the bottom of the arc-shaped lifting block of the drive lever (10), and a liquid volume adjustment assembly is slidably connected to the inner side of the drive lever (10).

2. The portable high-precision micro-liquid preparation device according to claim 1, characterized in that: The drive assembly includes a drive motor (4), the outer side of which is fixedly connected to the inner side of the liquid preparation tank (1), and the drive end of the drive motor (4) is fixedly connected to a drive cam (5), the outer side of which is in contact with the bottom of the arc-shaped lifting block of the drive lever (10).

3. The portable high-precision micro-liquid preparation device according to claim 1, characterized in that: A rotating shaft is fixedly connected to the inner side of the liquid preparation tank (1), and an anti-detachment limiting link (18) is rotatably connected to the outer side of the rotating shaft of the liquid preparation tank (1). The outer side of the anti-detachment limiting link (18) away from the liquid preparation tank (1) is rotatably connected to the inner side of the shaft of the drive lever (10).

4. The portable high-precision micro-liquid preparation device according to claim 1, characterized in that: The liquid volume adjustment assembly includes a lever slider (11), the inner side of the drive lever (10) is provided with a groove, the outer side of the lever slider (11) is slidably connected to the inner side of the groove of the drive lever (10), the outer side of the lever slider (11) is rotatably connected to a stroke adjustment slider (12), the inner side of the liquid mixing tank (1) is fixedly connected to an adjustment frame (13), the inner side of the adjustment frame (13) is rotatably connected to an adjustment screw (14), the inner side of the stroke adjustment slider (12) is threadedly connected to the outer side of the adjustment screw (14), and the outer side of the stroke adjustment slider (12) is slidably connected to the inner side of the adjustment frame (13).

5. A portable high-precision micro-liquid preparation device according to claim 4, characterized in that: One end of the adjusting screw (14) is fixedly connected to a bevel gear (15), and the outside of the liquid mixing tank (1) is rotatably connected to an adjusting handwheel (17). The outside of the rotating shaft of the adjusting handwheel (17) is fixedly connected to a bevel gear (16), and the bevel gear (16) and the bevel gear (15) are meshed with each other.

6. The portable high-precision micro-liquid preparation device according to claim 1, characterized in that: The clamping and fixing mechanism includes a guide slide rod (19), both ends of which are fixedly connected to the inner side of the liquid mixing tank (1). A clamping groove (22) is provided on the inner side of the liquid mixing tank (1). A liquid tank clamping plate (23) is slidably connected to the inner side of the clamping groove (22). The inner side of the liquid tank clamping plate (23) is slidably connected to the outer side of the guide slide rod (19). A clamping return spring (24) is sleeved on the outer side of the guide slide rod (19). One end of the clamping return spring (24) is fixedly connected to the outer side of the liquid tank clamping plate (23), and the other end of the clamping return spring (24) is fixedly connected to the inner side of the liquid mixing tank (1).

7. A portable high-precision micro-liquid preparation device according to claim 6, characterized in that: The inner side of the liquid mixing tank (1) is rotatably connected to a clamping cam (21), and the outer side of the liquid mixing tank (1) is rotatably connected to a clamping handwheel (20). The outer side of the rotating shaft of the clamping handwheel (20) is fixedly connected to the outer side of the clamping cam (21), and the outer side of the clamping cam (21) is in contact with the side of the liquid tank clamping plate (23) that is close to it.

8. The portable high-precision micro-liquid preparation device according to claim 1, characterized in that: An ultrasonic vibrating seat (2) is fixedly connected to the inner side of the liquid preparation tank (1), and a positioning groove (3) is provided on the top of the ultrasonic vibrating seat (2).

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