Micro-liquid metering device

Abstract

The invention discloses a micro liquid amount metering device which comprises a weighing table, supporting rods are arranged on the left side and the right side of the upper surface of the weighing table, and the tops of the supporting rods are connected through a fixed top plate. A gas-liquid separation plug is inserted in the middle of the fixed top plate; electromagnets are fixed on the lower surface of the fixed top plate on two sides of the gas-liquid separation plug; the weighing platform is also provided with a gas-liquid separation assembly, and the gas-liquid separation assembly is matched with the gas-liquid separation plug; the left side and the right side of the gas-liquid separation assembly are both connected with adsorption iron blocks, and the adsorption iron blocks are located under the electromagnets. The method is simple to operate, can complete the test of the moisture content within a certain time, and has higher test efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of compact sandstone water lock damage evaluation experiments, and in particular to a micro-liquid volume metering device. Background Art

[0002] The amount of water in the rock pores has a great influence on the seepage capacity of gas in the pores. The higher the water content, the smaller the seepage capacity of gas. Through experimental testing of the seepage capacity of rock gas at different water saturations, the degree of damage of water saturation to the seepage capacity of rock is further analyzed, and finally the water lock degree of the rock is evaluated.

[0003] When conducting water lock damage evaluation experiments in the laboratory, a test tube with a built-in desiccant is usually used to separate gas and water. The liquid inside the core is displaced under a constant pressure, and the weight of the test tube is weighed at different stages to calculate the water saturation of the core at that weight. This method is cumbersome to operate, has a long experimental cycle, and is difficult to identify and measure fluids for tight sandstone reservoir fluid experiments, which often leads to problems such as untimely measurement of the end water output and inaccurate calculation of water saturation. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a micro-liquid metering device.

[0005] The present invention is achieved by adopting the following technical solutions.

[0006] A micro-liquid volume metering device comprises a weighing platform, wherein support rods are arranged on the left and right sides of the upper surface of the weighing platform, and the tops of the support rods are connected via a fixed top plate; a gas-liquid separation plug is inserted in the middle of the fixed top plate, and electromagnets are fixed on the lower surfaces of the fixed top plates on both sides of the gas-liquid separation plug; a gas-liquid separation component is also arranged on the weighing platform, and the gas-liquid separation component cooperates with the gas-liquid separation plug; adsorption iron blocks are connected to the left and right sides of the gas-liquid separation component, and the adsorption iron blocks are located directly below the electromagnets.

[0007] Furthermore, a guide block is fixedly connected to the bottom of the gas-liquid separation plug, and an upper sealing groove is provided on the bottom surface of the gas-liquid separation plug located on the outer periphery of the guide block; through holes are provided on the left and right sides of the inside of the gas-liquid separation plug and the guide block, and a plug-in column is inserted at the upper end of the through hole, and an air inlet pipe and an air outlet pipe are respectively inserted in the two plug-in columns.

[0008] Furthermore, a sealing sleeve is connected to the top of the plug-in column, and an annular sealing ring is provided on the outer wall of the plug-in column.

[0009] Furthermore, the bottom of the air inlet pipe extends to the interior of the moisture absorber in the gas-liquid separation component, and a pipe connection component is provided at one end of the air inlet pipe located outside the gas-liquid separation component; the bottom of the air outlet pipe is flush with the bottom of the guide block, and the upper end of the air outlet pipe extends to the outside of the gas-liquid separation plug.

[0010] Furthermore, the pipe connection assembly includes a connecting hose, both sides of which are sleeved with second sealing rings, the bottom of the second sealing ring is connected to a lower clamp, and the upper end of the lower clamp is rotatably connected to the upper clamp via a rotating shaft.

[0011] Furthermore, a clamping groove is provided at one end of the lower clamp away from the rotating shaft, and a rotating groove is provided at one end of the upper clamp away from the rotating shaft. A rotating block is rotatably connected inside the rotating groove, and a second threaded column is connected to the bottom of the rotating block, and the second threaded column is threadedly connected to a fixing nut; clamping strips are provided on the inner sides of the lower clamp and the upper clamp.

[0012] Furthermore, the gas-liquid separation component comprises a moisture absorption tube, the interior of which is filled with a moisture absorbent; a lower sealing groove is provided at the top of the moisture absorption tube, and a first sealing ring is provided in the lower sealing groove.

[0013] Furthermore, extension plates are connected to the left and right sides of the upper part of the moisture absorption tube, and guide sleeves are provided at the edges of the extension plates. The support rod is slidably connected to the inside of the guide sleeves; an installation groove is opened in the middle of the upper surface of the extension plate, and the adsorption iron block is fixed in the installation groove.

[0014] Furthermore, the four corners of the bottom of the weighing platform are provided with adjustment pads, and the adjustment pads include a first threaded column connected to the bottom surface of the weighing platform, and the lower end of the first threaded column is threadedly connected to the shock-absorbing pad.

[0015] Furthermore, a display screen and operation buttons are provided on the front surface of the weighing platform.

[0016] The present invention achieves the following beneficial effects.

[0017] The present invention absorbs the water displaced from the core sample by a water absorbent, and then obtains the weight of the displaced water by recording the weight change of the desiccant through a weighing platform, thereby calculating the water saturation of the core. Specifically, it has the following advantages:

[0018] 1. By recording the weight change of the desiccant using an electronic balance, accurate monitoring of the moisture content change can be achieved, thus improving the accuracy of the test results;

[0019] 2. The present invention is easy to operate and can complete the moisture content test within a certain period of time, and has higher testing efficiency than other methods;

[0020] 3. The present invention is non-destructive to the core sample itself and can be tested repeatedly to maintain the integrity of the sample;

[0021] 4. The present invention can be used for different types of core samples and has strong applicability and versatility;

[0022] 5. Compared with some high-end instruments and equipment, the method of using moisture absorbent and weighing table is relatively low in cost and more economical;

[0023] 6. The operation process is relatively simple, does not require complicated operation steps and professional skills, and is easy to operate and master;

[0024] 7. By recording data on the weighing platform, data can be traced and archived, making it convenient for subsequent review and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a front view of the present invention;

[0027] Figure 3 A top view of the present invention;

[0028] Figure 4 For the present invention Figure 3 Sectional view along line AA;

[0029] Figure 5 This is a schematic diagram of the structure of the bottom of the fixed top plate of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the gas-liquid separation component of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the sealing sleeve, the plug-in column and the annular sealing ring of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the adjustable foot pad of the present invention;

[0033] Fig. 9 An exploded view of the pipe connection assembly of the present invention;

[0034] Fig.10 For the present invention Figure 1 Enlarged view of part A in the middle;

[0035] Fig.11 It is the electromagnet control circuit diagram of the present invention.

[0036] Among them: 1. weighing platform; 2. tray; 3. fixing sleeve; 4. fastening screw; 5. support rod; 6. fixed top plate; 7. first fixing bolt; 8. electromagnet; 9. gas-liquid separation plug; 10. upper sealing groove; 11. guide block; 12. through hole; 13. sealing sleeve; 14. plug-in column; 15. annular sealing ring; 16. gas-liquid separation component; 1601. moisture absorption tube; 1602. round plate; 1603. lower sealing groove; 1604. first sealing ring; 1605. extension plate; 1606. installation groove; 1607. guide sleeve; 17. second Fixing bolt; 18, adsorption iron block; 19, air inlet pipe; 20, air outlet pipe; 21, moisture absorbent; 22, adjustment pad; 2201, first threaded column; 2202, shock-absorbing pad; 23, pipe connection assembly; 2301, connecting hose; 2302, second sealing ring; 2303, lower clamp; 2304, upper clamp; 2305, clamping strip; 2306, rotating groove; 2307, rotating block; 2308, second threaded column; 2309, fixing nut; 2310, rotating shaft; 2311, clamping groove; 24, display screen; 25, operation button. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below through specific implementation methods.

[0038] like Figure 1-10 As shown, a micro-liquid volume metering device includes a weighing platform 1, a tray 2 is fixedly installed in the middle of the upper surface of the weighing platform 1, two sets of fixing sleeves 3 are fixedly connected to the upper surface of the weighing platform 1 on the left and right sides of the tray 2 through fastening screws 4, four fixing sleeves 3 are inserted inside, and the tops of the four supporting rods 5 are fixedly connected to a fixed top plate 6 through bolts, and electromagnets 8 are arranged on the left and right sides of the bottom of the fixed top plate 6. The two electromagnets 8 are fixedly installed on the bottom of the fixed top plate 6 through the first fixing bolts 7, and a gas-liquid separation component 16 is arranged above the tray 2 and below the fixed top plate 6. A gas-liquid separation plug 9 is fixedly connected to the middle position of the bottom of the fixed top plate 6, and the top of the gas-liquid separation plug 9 passes through the bottom of the fixed top plate 6 and extends to the outside of the upper surface of the fixed top plate 6. As shown Figure 2As shown, when the electromagnet 8 adsorbs the adsorbent iron block 18, the tray 2 and the gas-liquid separation component 16 are in a separated state, and the specific separation distance is about five millimeters. In this way, when the gas-liquid separation component 16 falls on the tray 2, the internal moisture absorbent 21 will not be subjected to severe impact, so that it can fall smoothly on the tray 2 to prevent severe impact from causing the release of moisture inside the moisture absorbent 21, reducing its moisture absorption capacity, or even causing it to lose its moisture absorption function, affecting its service life and effect, resulting in inaccurate weighing results, especially for some desiccants with strong chemical properties, which may bring safety hazards. Making the gas-liquid separation component 16 fall smoothly on the tray 2 can also reduce the risk of damage to the weighing equipment due to sudden load changes, which helps to extend the service life of the weighing equipment.

[0039] like Figure 5 As shown, a guide block 11 is fixedly connected to the bottom of the gas-liquid separation plug 9. The cross-section of the guide block 11 is a trapezoid that is wide at the top and narrow at the bottom. The trapezoidal structure design can provide a larger initial insertion area, making it easier and more accurate to insert the gas-liquid separation plug 9 into the moisture absorption tube 1601. This design can effectively guide the gas-liquid separation plug 9 to the correct position, reducing possible deviations or adverse effects during insertion, and the trapezoidal design can speed up the insertion speed of the gas-liquid separation plug 9 and ensure its correct position, effectively guide the positioning of the gas-liquid separation plug 9, and reduce the time for adjustment and correction. An upper sealing groove 10 is provided on the outer periphery of the bottom guide block 11 of the gas-liquid separation plug 9, and the interior of the gas-liquid separation plug 9 is connected to the guide block 11. Through holes 12 are provided on both the left and right sides of the interior of the block 11, and plug-in columns 14 are inserted into the upper ends of the two through holes 12. An annular sealing ring 15 is fixedly connected to the outer wall of the plug-in column 14. The annular sealing ring 15 is used for sealing between the plug-in column 14 and the through hole 12. The annular sealing ring 15 can fill the gap between the plug-in column 14 and the through hole 12 to form a better sealing effect, which can effectively prevent liquid or gas leakage and ensure the sealing performance of the connection part. The annular sealing ring 15 can also play a buffering and protective role, reduce the friction and wear between the plug-in column 14 and the through hole 12, and extend the service life. At the same time, the annular sealing ring 15 can also prevent the corrosive medium from eroding the connection part to maintain stability and reliability.

[0040] Specifically, the tops of the two plug-in columns 14 located outside the gas-liquid separation plug 9 are fixedly connected with sealing sleeves 13, one of the sealing sleeves 13 is plugged with an air inlet pipe 19, and the other sealing sleeve 13 is plugged with an air outlet pipe 20.

[0041] like Figure 6As shown, the gas-liquid separation component 16 includes a moisture absorption tube 1601, a circular plate 1602 is fixedly connected to the bottom of the moisture absorption tube 1601, and the moisture absorption tube 1601 is filled with a moisture absorbent 21. The moisture absorbent 21 can be selected in a variety of ways, and liquid concentrated sulfuric acid, solid anhydrous calcium chloride, soda lime, and water-absorbing gel can be selected. This is only an example, and the specific selection is selected according to the actual situation on site. Extension plates 1605 are fixedly connected to the left and right sides of the upper end of the moisture absorption tube 1601. Two guide sleeves 1607 are fixedly connected to the left and right edges of the two extension plates 1605. The support rod 5 is slidably connected to the inside of the guide sleeve 1607. The support rod 5 is used to limit the fall of the moisture absorption tube 1601. The support rod 5 can ensure that the moisture absorption tube 1601 accurately enters the tray 2 during the fall process, avoiding the moisture absorption tube 1601 from deviating from the track or swinging to cause accidental injury or damage, and guides the moisture absorption tube 1601 to remain stable after reaching a specific position, preventing the moisture absorption tube 1601 from unnecessary movement or shaking during the weighing process, which helps to obtain accurate weighing results. By limiting the support rod 5, it can be ensured that the moisture absorption tube 1601 falls on the correct position for weighing, reducing the influence of external factors on the weighing result, improving the weighing accuracy, and the support rod 5 can limit the range of motion of the moisture absorption tube 1601, reducing the risk of the equipment being impacted or damaged, and extending the service life of the weighing platform 1.

[0042] like Figure 6 As shown, the middle of the upper surface of the two extension plates 1605 is provided with a mounting groove 1606, and the inside of the two mounting grooves 1606 is fixedly connected to the adsorption iron block 18 by the second fixing bolt 17, and the adsorption iron block 18 is arranged directly below the electromagnet 8. The top of the moisture absorption tube 1601 is provided with a lower sealing groove 1603, and the inside of the lower sealing groove 1603 is fixedly connected with a first sealing ring 1604. The sealing structure is formed by splicing the upper sealing groove 10 and the lower sealing groove 1603, and the first sealing ring 1604 is added therein, which can effectively improve the sealing performance. Ring 1604 can fill the gap between the upper sealing groove 10 and the lower sealing groove 1603 to prevent leakage of the medium or entry of external impurities, ensure the sealing effect, and prevent water vapor in the outside air from entering the moisture absorption tube 1601 and affecting the experimental data. The first sealing ring 1604 is made of elastic material, and installation and replacement are relatively simple and convenient. It only needs to place the first sealing ring 1604 in the lower sealing groove 1603 without complicated operating steps. The design of this sealing structure makes maintenance more convenient, and the replacement of the first sealing ring 1604 is also relatively easy, which helps to reduce maintenance costs.

[0043] like Figure 5As shown, the bottom of the air inlet pipe 19 extends to the interior of the moisture absorbent 21, and a pipe connection assembly 23 is provided at one end of the air inlet pipe 19 located outside the moisture absorption tube 1601, the bottom of the air outlet pipe 20 is flush with the bottom of the guide block 11, and the upper end of the air outlet pipe 20 extends to the outside of the gas-liquid separation plug 9.

[0044] like Fig. 9 As shown, the pipe connection assembly 23 includes a connection hose 2301, the outer side of the connection hose 2301 is wrapped with a stainless steel metal braided layer, which is used to protect the connection hose 2301 from external damage and can play a role in increasing the structural strength. The left and right sides of the connection hose 2301 are sleeved with second sealing rings 2302, the bottoms of the two second sealing rings 2302 are fixedly connected to lower clamps 2303, and the upper ends of the lower clamps 2303 are rotatably connected to upper clamps 2304 through a rotating shaft 2310. The pipe connection assembly 23 can quickly complete the connection between the external pipeline and the air intake pipe 19, which can greatly reduce the time of installation and disassembly and improve work efficiency. The pipe connection assembly 23 makes the pipe docking more flexible and convenient, and can be quickly installed in a small space, which improves the convenience of operation. Compared with flange connection, the pipe connection assembly 23 can be repeatedly disassembled and installed, which is convenient for equipment adjustment and maintenance and reduces material waste.

[0045] like Fig. 9 As shown, a clamping groove 2311 is provided at one end of the lower clamp 2303, and a rotation groove 2306 is provided at the opposite end of the upper clamp 2304. A rotation block 2307 is rotatably connected inside the rotation groove 2306. A second threaded column 2308 is fixedly connected to the bottom of the rotation block 2307. A fixing nut 2309 is threadedly connected to the surface of the second threaded column 2308. The inner side of the lower clamp 2303 and the second sealing ring 2302 and the inner side of the upper clamp 2304 and the second sealing ring 2302 are connected. There are two clamping strips 2305 fixedly connected in between. After the lower clamp 2303 and the upper clamp 2304 are buckled, the inner clamping strip 2305 will exert pressure on the second sealing ring 2302, so that the second sealing ring 2303 can be pressed tightly against the end of the pipe. After being pressed, a good sealing effect can be formed to prevent liquid or gas leakage, ensure the sealing performance between the intake pipe 19 and the pipe connection assembly 23, reduce the leakage risk of the pipeline system, and ensure the accuracy of the experimental data.

[0046] like Figure 2 and Figure 8As shown, the four corners of the bottom of the weighing platform 1 are provided with adjustment pads 22, and the adjustment pads 22 include a first threaded column 2201, the upper end of the first threaded column 2201 is fixedly connected to the bottom surface of the weighing platform 1, and the lower end surface of the first threaded column 2201 is threadedly connected with a shock-absorbing pad 2202. By screwing the shock-absorbing pad 2202 to the lower end of the first threaded column 2201, the level of the weighing platform 1 can be adjusted, which can help adjust and calibrate the level of the weighing platform 1, ensure the level and stability of the weighing platform, help eliminate errors caused by imbalance, and improve the accuracy of weighing. Under different ground or environment, the ground may not be flat or level enough. By rotating the shock-absorbing pad 2202, the weighing platform 1 can adapt to different ground conditions and keep it level. The shock-absorbing pad 2202 can effectively reduce the impact of external vibration on the weighing accuracy, ensure that the weighing result is more accurate and reliable, and the shock-absorbing pad 2202 can also play a buffering role, reduce the damage of the weighing equipment from ground vibration and impact, and extend the service life of the weighing equipment.

[0047] like Figure 1 As shown, a display screen 24 is fixedly mounted on one side of the front surface of the weighing platform 1. The display screen 24 can display the weighing data in real time so that the staff can visually observe the specific water content. An operation button 25 is set on the other side of the front surface of the weighing platform 1. The operation button 25 can be used to set the collection time, as well as the power-on time and power-on interval of the electromagnet 8. The working principle of the electromagnet 8 is as follows Fig.11 As shown, first connect the circuit to a 220V AC power supply, and the controller MCU controls the on and off of the control switch S according to the set time interval. When the control switch S is closed, the electromagnet 8 is energized to generate magnetism to adsorb the adsorbed iron block 18. After the control switch S is disconnected, the electromagnet 8 loses its magnetism, and the adsorbed iron block 18 falls down under the action of gravity. The protective resistor R set in the circuit can prevent the risk of short circuit caused by unstable voltage during long-term operation. The operation button 25 can also reset the initial weight of the gas-liquid separation component 16, which is similar to the peeling function of an electronic scale. The zeroing setting can more intuitively understand the amount of liquid absorbed by the moisture absorbent 21 each time it bears weight.

[0048] Working principle: Before the experiment, the weight of the gas-liquid separation component 16 needs to be measured first, and then the electromagnet 8 is energized. At this time, the electromagnet 8 generates suction to adsorb the iron block 18. With the cooperation of the upper sealing groove 10, the lower sealing groove 1603 and the first sealing ring 1604, the gas-liquid separation plug 9 and the moisture absorption tube 1601 are in a sealed state, and the gas-liquid separator component 16 and the tray 2 are in a separated state; during the experiment, the gas-liquid mixture is introduced into the interior of the moisture absorbent 21 through the air inlet pipe 19. After absorbing for a period of time, the electromagnet 8 is powered off, and the gas-liquid separation component 16 is in Under the action of gravity, it automatically falls along the support rod 5 onto the tray 2 of the weighing platform 1; at this time, after the load-bearing platform 1 has a stabilization time of 2-3 seconds, the weighing platform 1 weighs the weight of the liquid absorbed by the gas-liquid separation component 16 and records it, and then the electromagnet 8 opens to suck the gas-liquid separator component 16 back to the top, so that the moisture absorption tube 1601 and the gas-liquid separation plug 9 are re-sealed, and automatic gas-liquid separation is achieved through the moisture absorbent 21. The above operation is repeated according to the set time to achieve effective measurement of automatic gas-liquid separation, thereby calculating the water saturation of the core, and the water saturation of the rock can be accurately calculated.

[0049] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A micro-liquid metering device, characterized in that: The weighing platform (1) comprises a weighing platform (1), wherein support rods (5) are arranged on both left and right sides of the upper surface of the weighing platform (1), and the tops of the support rods (5) are connected via a fixed top plate (6); a gas-liquid separation plug (9) is inserted in the middle of the fixed top plate (6), and electromagnets (8) are fixed on the lower surfaces of the fixed top plate (6) on both sides of the gas-liquid separation plug (9); a gas-liquid separation component (16) is also arranged on the weighing platform (1), and the gas-liquid separation component (16) cooperates with the gas-liquid separation plug (9); and adsorption iron blocks (18) are connected to both left and right sides of the gas-liquid separation component (16), and the adsorption iron blocks (18) are located directly below the electromagnets (8).

2. A micro-liquid metering device according to claim 1, characterized in that: The bottom of the gas-liquid separation plug (9) is fixedly connected to a guide block (11), and an upper sealing groove (10) is provided on the bottom surface of the gas-liquid separation plug (9) located on the outer periphery of the guide block (11); through holes (12) are provided on both the left and right sides of the inside of the gas-liquid separation plug (9) and the guide block (11), and a plug-in column (14) is plugged into the upper end of the through hole (12), and an air inlet pipe (19) and an air outlet pipe (20) are respectively inserted into the two plug-in columns (14).

3. A micro-liquid metering device according to claim 2, characterized in that: The top of the plug-in column (14) is connected with a sealing sleeve (13), and the outer wall of the plug-in column (14) is provided with an annular sealing ring (15).

4. A micro-liquid metering device according to claim 2, characterized in that: The bottom of the air inlet pipe (19) extends to the interior of the moisture absorbent (21) in the gas-liquid separation component (16), and a pipe connection component (23) is provided at one end of the air inlet pipe (19) located outside the gas-liquid separation component (16); the bottom of the air outlet pipe (20) is flush with the bottom of the guide block (11), and the upper end of the air outlet pipe (20) extends to the outside of the gas-liquid separation plug (9).

5. A micro-liquid metering device according to claim 4, characterized in that: The pipe connection assembly (23) comprises a connection hose (2301), both sides of the connection hose (2301) are sleeved with a second sealing ring (2302), the bottom of the second sealing ring (2302) is connected to a lower clamp (2303), and the upper end of the lower clamp (2303) is rotatably connected to an upper clamp (2304) via a rotating shaft (2310).

6. A micro-liquid metering device according to claim 5, characterized in that: A clamping groove (2311) is provided at one end of the lower clamp (2303) away from the rotating shaft (2310), and a rotating groove (2306) is provided at one end of the upper clamp (2304) away from the rotating shaft (2310). A rotating block (2307) is rotatably connected inside the rotating groove (2306), and a second threaded column (2308) is connected to the bottom of the rotating block (2307), and the second threaded column (2308) is threadedly connected to a fixing nut (2309); clamping strips (2305) are provided on the inner sides of the lower clamp (2303) and the upper clamp (2304).

7. A micro-liquid metering device according to claim 1, characterized in that: The gas-liquid separation component (16) comprises a moisture absorption tube (1601), the interior of which is filled with a moisture absorbent (21); a lower sealing groove (1603) is provided at the top of the moisture absorption tube (1601), and a first sealing ring (1604) is provided in the lower sealing groove (1603).

8. A micro-liquid metering device according to claim 7, characterized in that: The left and right sides of the upper part of the moisture absorption tube (1601) are connected to extension plates (1605), and a guide sleeve (1607) is provided at the edge of the extension plate (1605), and the support rod (5) is slidably connected to the inside of the guide sleeve (1607); a mounting groove (1606) is opened in the middle of the upper surface of the extension plate (1605), and the adsorption iron block (18) is fixed in the mounting groove (1606).

9. A micro-liquid metering device according to claim 1, characterized in that: Adjustment pads (22) are provided at the four corners of the bottom of the weighing platform (1), and the adjustment pads (22) include a first threaded column (2201) connected to the bottom surface of the weighing platform (1), and the lower end of the first threaded column (2201) is threadedly connected to a shock-absorbing pad (2202).

10. A micro-liquid metering device according to claim 1, characterized in that: A display screen (24) and operating buttons (25) are provided on the front surface of the weighing platform (1).

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