Full-automatic micro liquid separator

Abstract

The full-automatic micro liquid distributor comprises a shell and a control computer, a plurality of injector tubes are vertically arranged in the shell in parallel, a liquid distribution electromagnetic valve group and a liquid outlet electromagnetic valve group are fixedly arranged in the shell, and electromagnetic valves with the same number as the injector tubes are arranged in the liquid distribution electromagnetic valve group and the liquid outlet electromagnetic valve group. Each injector tube comprises an injection tube body and a pull rod moving back and forth in the injection tube body, one end of each injection tube body is correspondingly communicated with each electromagnetic valve of the liquid separation electromagnetic valve set and the liquid outlet electromagnetic valve set, and universal suction heads with the same number as the injector tubes are movably arranged in the shell. The bottom of the shell is movably connected with a test solution tank for storing a test solution and a deep hole plate for storing a quantitative test solution after liquid separation. According to the full-automatic liquid adding device, the liquid adding amount can be accurately controlled, the liquid separating precision of the liquid separator is improved, and the liquid separating efficiency can be improved through full-automatic liquid adding.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid separation instruments, in particular to a full-automatic micro liquid dispenser. Background Art

[0002] The full-automatic micro liquid dispenser can realize automatic and high-throughput accurate liquid separation, which can not only save manpower but also avoid experimental sample addition errors. It can be applied to batch dispensing of various nucleic acid extraction kits, reduce the physical labor of personnel, increase the processing volume, improve the daily work efficiency and liquid separation accuracy, realize the microscale of the reaction system, and reduce the reagent cost.

[0003] The existing Chinese patent with the patent publication number CN216678277U and the invention name of high-precision multi-channel micro liquid dispenser includes a liquid separation instrument body and a liquid dispenser. A liquid separation cavity is opened on one side of the liquid separation instrument body. A slide plate is arranged at the bottom inside the liquid separation cavity. A plurality of orifice plates are arranged on the slide plate. A liquid dispenser is arranged on one side of the liquid separation cavity. A heat exchange copper tube is fixedly installed inside the liquid separation instrument body. A heat dissipation mechanism is installed on the other side of the second partition board. A pair of heat dissipation fans are embedded and installed on one side of the liquid separation instrument body. The heat dissipation mechanism includes a water tank, and a plurality of heat dissipation fins are fixedly installed on one side of the water tank. It can exchange the heat inside the liquid separation instrument body, thereby reducing the temperature inside the liquid separation instrument body, cooling the water tank and the heat dissipation fins, and then improving the heat exchange efficiency.

[0004] Although the above existing technology can dissipate heat from the liquid separation instrument body and does not affect the use of the liquid separation instrument, the liquid addition amount cannot be accurately controlled during the use of the liquid separation instrument, resulting in uneven or repeated liquid separation, which affects the liquid separation accuracy of the liquid separation instrument. Therefore, the utility model provides a full-automatic micro liquid dispenser. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the above traditional technologies, and provide a full-automatic micro liquid dispenser, which can accurately control the liquid addition amount, improve the liquid separation accuracy of the liquid dispenser, and the full-automatic liquid addition can improve the liquid separation efficiency.

[0006] The purpose of the utility model is achieved by the following technical measures:

[0007] A fully automatic micro-dispenser comprises a shell and a control computer, wherein the control computer is arranged on the shell, and a plurality of syringe tubes are arranged vertically and in parallel in the shell, a liquid separation solenoid valve group and a liquid outlet solenoid valve group are fixedly arranged in the shell, and the liquid separation solenoid valve group and the liquid outlet solenoid valve group are both provided with solenoid valves having the same number as the syringe tubes, the syringe tube comprises an injection tube body and a pulling rod moving back and forth in the injection tube body, a pulling block is vertically slidably connected in the shell, one end of the pulling rod extending out of the injection tube body is fixedly connected to the pulling block, and one end of each injection tube body away from the pulling block is correspondingly connected to each solenoid valve of the liquid separation solenoid valve group and the liquid outlet solenoid valve group, universal suction tips having the same number as the syringe tubes are movably arranged in the shell, a test liquid tank for storing test liquid and a deep-well plate for storing quantitative test liquid after liquid separation are movably connected at the bottom of the shell, and the control computer controls the actions of the solenoid valve, the deep-well plate, the test liquid tank and the universal suction tip.

[0008] Further specific optimization is that a liquid separating block is fixedly connected in the shell, and a plurality of vertical liquid separating through holes are opened on the liquid separating block, the injection tube body is inserted into the corresponding liquid separating through hole from the bottom, and a plurality of liquid separating side holes connected with the liquid separating through holes are opened on the side wall of the liquid separating through hole, the liquid separating through holes are connected with the solenoid valves of the liquid separating solenoid valve group in a one-to-one correspondence, and the liquid separating side holes are connected with the solenoid valves of the liquid outlet solenoid valve group in a one-to-one correspondence.

[0009] Further specific optimization is that a connecting panel is vertically fixedly connected in the shell, the liquid separating block is fixedly connected to the connecting panel, the side of the connecting panel facing away from the liquid separating block is fixedly connected to a pulling motor, the output end of the pulling motor is coaxially fixedly connected to a pulling screw rod, a pulling nut is threadedly rotatably connected on the pulling screw rod, the pulling nut is fixedly connected to the pulling block, and the pulling motor is electrically connected to a control computer.

[0010] Further specific optimization is that two pull-out slide rails are symmetrically fixedly connected to the connecting panel, each of the pull-out slide rails is slidably connected to a pull-out slider, a slider connecting plate is connected between the two pull-out sliders, the pull-out block is fixedly connected to the slider connecting plate, and the slider connecting plate is fixedly connected to the pull-out nut.

[0011] Further specific optimization is that a suction head moving motor is fixedly connected to the bottom of the shell, and the output end of the suction head moving motor is coaxially fixedly connected to a suction head moving lead screw, a lead screw nut is threadedly rotatably connected to the suction head moving lead screw, and a suction head placement rack is fixedly connected to the lead screw nut, a plurality of the universal suction heads are placed on the suction head placement rack, and the suction head moving motor is electrically connected to a control computer.

[0012] For further specific optimization, a liquid separation placement rack is slidably connected to the bottom of the outer shell. The test solution tank and the deep well plate are arranged on the liquid separation placement rack. A placement rack moving motor is fixedly connected to the bottom of the outer shell. The output end of the placement rack moving motor drives a moving belt to rotate. A placement rack fixing clip is clamped on the moving belt, and the placement rack fixing clip is fixedly connected to the bottom of the liquid separation placement rack. The placement rack moving motor is electrically connected to the control computer.

[0013] For further specific optimization, an overflow tank is formed on the liquid separation placement rack. An overflow hole communicating with the overflow tank is formed on the liquid separation placement rack. An overflow liquid storage tank for receiving the test solution flowing out from the overflow hole is arranged below the liquid separation placement rack.

[0014] For further specific optimization, induction sheets are fixedly connected to both the pipette tip placement rack and the liquid separation placement rack. Sensors corresponding to and cooperating with the two induction sheets are fixedly connected inside the outer shell. The sensors are electrically connected to the control computer.

[0015] Due to the adoption of the above technical solutions, compared with the prior art, the advantages of the present utility model are as follows:

[0016] The test solution is extracted by controlling the pulling block to drive the pulling rod through the pulling motor, the pulling lead screw and the pulling nut. The universal pipette tip is driven to move up and down by the pipette tip moving motor and the pipette tip moving lead screw to suck the test solution in the test solution tank. The test solution tank and the deep well plate are driven to move left and right by the placement rack moving motor and the moving belt to receive the measured test solution sucked, and it is also convenient for the universal pipette tip to quantitatively suck the test solution in the test solution tank. The solenoid valve controls the sucking switch and the sucking amount, realizing precise control of the liquid adding amount, improving the liquid separation accuracy of the liquid dispenser, and the fully automatic liquid adding can improve the liquid separation efficiency.

[0017] Through the cooperation of the induction sheet and the sensor, the moving positions of the universal pipette tip, the test solution tank and the deep well plate are precisely controlled, facilitating the placement of the quantitatively sucked test solution and improving the liquid separation efficiency.

[0018] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0020] Figure 2 It is a schematic diagram of the partial structure of an embodiment of the present utility model.

[0021] Figure 3 It is a schematic diagram of the structure of the placement rack moving motor, the moving belt and the placement rack fixing clip of an embodiment of the present utility model.

[0022] Figure 4It is a schematic structural diagram of the suction head moving motor, the suction head moving lead screw, and the lead screw nut according to an embodiment of the present utility model.

[0023] Figure 5 It is a schematic structural diagram of the back side of the connection panel according to an embodiment of the present utility model.

[0024] Figure 6 It is a schematic structural diagram of the liquid separation placement rack according to an embodiment of the present utility model.

[0025] Markings in the figure: 1. Outer shell; 2. Control computer; 3. Liquid separation solenoid valve group; 4. Liquid outlet solenoid valve group; 5. Injection tube body; 6. Pull rod; 7. Pull block; 8. Universal suction head; 9. Test solution tank; 10. Deep well plate; 11. Liquid separation block; 111. Liquid separation through hole; 112. Liquid separation side hole; 12. Connection panel; 13. Pulling motor; 14. Pulling lead screw; 15. Pulling nut; 16. Slide block connection plate; 17. Pulling slide rail; 18. Pulling slide block; 19. Suction head moving motor; 20. Suction head moving lead screw; 21. Lead screw nut; 22. Suction head placement rack; 23. Liquid separation placement rack; 24. Placement rack moving motor; 25. Moving belt; 26. Placement rack fixing clip; 27. Overflow tank; 28. Overflow hole; 29. Overflow liquid storage tank; 30. Induction sheet; 31. Sensor.

[0026] Specific implementation

[0027] In order to clearly and completely describe the objectives, technical solutions, and advantages of the present utility model, the following further elaborates on the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only a part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] For the sake of simplicity and illustration, the principles of the embodiments are mainly described by referring to examples. In the following description, many specific details are set forth to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail to avoid unnecessarily making these embodiments difficult to understand. Additionally, all embodiments can be used in combination with each other. Embodiment

[0031] A fully automatic micro pipettor, comprising a housing 1 and a control computer 2. The control computer 2 is arranged on the housing 1. A plurality of syringe tubes are arranged in parallel and vertically inside the housing 1. A liquid separation solenoid valve group 3 and a liquid outlet solenoid valve group 4 are fixedly arranged inside the housing 1. The liquid separation solenoid valve group 3 and the liquid outlet solenoid valve group 4 are both provided with solenoid valves having the same number as the syringe tubes. The syringe tube includes an injection tube body 5 and a pull rod 6 that moves back and forth inside the injection tube body 5. A pull block 7 is slidably connected vertically inside the housing 1. One end of the pull rod 6 extending out of the injection tube body 5 is fixedly connected to the pull block 7. Each end of each injection tube body 5 away from the pull block 7 is correspondingly communicated with each solenoid valve of the liquid separation solenoid valve group 3 and the liquid outlet solenoid valve group 4. A plurality of universal pipette tips 8 having the same number as the syringe tubes are movably arranged inside the housing 1. A test solution tank 9 for storing the test solution and a deep well plate 10 for storing the quantitatively separated test solution are movably connected to the bottom of the housing 1. The control computer 2 controls the actions of the solenoid valves, the deep well plate 10, the test solution tank 9, and the universal pipette tips 8.

[0032] A liquid separation block 11 is fixedly connected inside the housing 1. A plurality of vertically penetrating liquid separation through holes 111 are formed on the liquid separation block 11. The injection tube body 5 is inserted into the corresponding liquid separation through holes 111 from below. A plurality of liquid separation side holes 112 communicating with the liquid separation through holes 111 are formed on the side wall of the liquid separation through holes 111. The liquid separation through holes 111 are correspondingly connected to the solenoid valves of the liquid separation solenoid valve group 3 one by one, and the liquid separation side holes 112 are correspondingly connected to the solenoid valves of the liquid outlet solenoid valve group 4 one by one.

[0033] With the above technical solution, when the pulling block 7 drives multiple pulling rods 6 to extract a quantitative test solution, the electromagnetic valves of the liquid separation electromagnetic valve group 3 are activated to control the amount of test solution drawn from the test solution tank 9 into the injection tube body 5 through the liquid separation through hole 111 by the universal suction head 8. Subsequently, the deep well plate 10 moves below the universal suction head 8, and the pulling block 7 pushes the pulling rod 6 into the injection tube body 5 to squeeze the extracted quantitative test solution into the corresponding hole grooves of the deep well plate 10. When the liquid separation work of the cycle is completed, the electromagnetic valves of the liquid outlet electromagnetic valve group 4 are activated, and the moving pulling block 7 drives multiple pulling rods 6 to extract the quantitative test solution drawn into the deep well plate 10 into the injection tube body 5 through the liquid separation side hole 112, and then pushes the pulling rod to sequentially extract the test solution placed in the deep well plate 10 into the corresponding reagent bottles for standby through the liquid separation side hole 112.

[0034] When quantitatively extracting the test solution, the injection tube body 5 is pre-filled with liquid to avoid the influence of air in the injection tube body 5 on the amount of test solution extracted, thereby improving the liquid separation accuracy.

[0035] The electromagnetic valves of both the liquid separation electromagnetic valve group 3 and the liquid outlet electromagnetic valve group 4 are provided with two channels for inlet and outlet, and each electromagnetic valve is connected to the corresponding liquid separation through hole 111 and liquid separation side hole 112 through a hose.

[0036] A connection panel 12 is vertically and fixedly connected inside the housing 1. The liquid separation block 11 is fixedly connected to the connection panel 12. A pulling motor 13 is fixedly connected to the side of the connection panel 12 facing away from the liquid separation block 11. The output end of the pulling motor 13 is coaxially and fixedly connected with a pulling lead screw 14. A pulling nut 15 is rotationally connected to the pulling lead screw 14 by a thread. The pulling nut 15 is fixedly connected to the pulling block 7. The pulling motor 13 is electrically connected to the control computer 2. By driving the pulling lead screw 14 to rotate by the pulling motor 13, the pulling nut 15 moves up and down to drive the pulling block 7 to move up and down, realizing the actions of simultaneously pushing and pulling the multiple pulling rods 6 into and out of the injection tube body 5, improving the degree of automation of liquid separation, and further improving the liquid separation efficiency.

[0037] Two pulling slide rails 17 are symmetrically and fixedly connected to the connection panel 12. Each pulling slide rail 17 is slidably connected with a pulling slider 18. A slider connection plate 16 is connected between the two pulling sliders 18. The pulling block 7 is fixedly connected to the slider connection plate 16, and the slider connection plate 16 is fixedly connected to the pulling nut 15. When the pulling block 7 moves on the connection panel 12, the cooperation of the pulling slider 18 and the pulling slide rail 17 can make the pulling block 7 drive the pulling rod 6 to push and pull more stably, thereby improving the accuracy of liquid separation.

[0038] A pipette head moving motor 19 is fixedly connected to the bottom of the housing 1. The output end of the pipette head moving motor 19 is coaxially and fixedly connected to a pipette head moving lead screw 20. A lead screw nut 21 is rotationally connected to the pipette head moving lead screw 20 in a threaded manner. A pipette head placement rack 22 is fixedly connected to the lead screw nut 21. A plurality of universal pipette heads 8 are placed on the pipette head placement rack 22. The pipette head moving motor 19 is electrically connected to the control computer 2. By controlling the pipette head moving motor 19 by the control computer 2 to drive the pipette head moving lead screw 20 to rotate, the lead screw nut 21 moves up and down on the moving lead screw, thereby driving the plurality of universal pipette heads 8 placed on the pipette head placement rack 22 to move up and down, completing the operations of sucking and placing the test solution, realizing the automation of control, and improving the liquid separation efficiency.

[0039] A liquid separation placement rack 23 is slidably connected to the bottom of the housing 1. A test solution tank 9 and a deep well plate 10 are arranged on the liquid separation placement rack 23. A placement rack moving motor 24 is fixedly connected to the bottom of the housing 1. The output end of the placement rack moving motor 24 drives a moving belt 25 to rotate. A placement rack fixing clip 26 is clamped on the moving belt 25. The placement rack fixing clip 26 is fixedly connected to the bottom of the liquid separation placement rack 23. The placement rack moving motor 24 is electrically connected to the control computer 2. The control computer 2 controls the placement rack moving motor 24 to start, driving the moving belt 25 to drive the placement rack fixing clip 26 to move, thereby driving the liquid separation placement rack 23 and the test solution tank 9 and the deep well plate 10 placed thereon to move left and right. When it is necessary to suck the test solution, the test solution tank 9 is moved below the universal pipette head 8. When it is necessary to place the sucked test solution, the deep well plate 10 is moved below the universal pipette head 8, realizing the automation of control and improving the liquid separation efficiency.

[0040] An overflow groove 27 is formed on the liquid separation placement rack 23. An overflow hole 28 communicating with the overflow groove 27 is formed on the liquid separation placement rack 23. An overflow liquid storage tank 29 for receiving the test solution flowing down from the overflow hole 28 is arranged below the liquid separation placement rack 23. When the test solution tank 9 on the liquid separation placement rack 23 is driven to move by the placement rack moving motor 24, it is easy to cause the test solution to overflow due to left and right shaking. The overflowing test solution is caught by the overflow groove, and the overflowing test solution flows through the overflow hole 28 to the overflow liquid storage tank 29 for collection, avoiding the test solution from overflowing and polluting the internal environment and ensuring the cleanliness inside the housing 1.

[0041] Induction sheets 30 are fixedly connected to both the pipette head placement rack 22 and the liquid separation placement rack 23. A sensor 31 corresponding to and cooperating with the two induction sheets 30 is fixedly connected inside the housing 1. The sensor 31 is electrically connected to the control computer 2. The sensor 31 accurately controls the moving positions of the universal pipette head 8, the test solution tank 9, and the deep well plate 10 by sensing the positions of the corresponding induction sheets 30, realizing the cyclic operation of sucking and placing the test solution, facilitating the placement of the quantitatively sucked test solution, and improving the liquid separation efficiency.

[0042] When the fully automatic micro pipettor is in use, the injection tube body 5 is pre-filled with liquid in advance to avoid the influence of air in the injection tube body 5 on the extraction volume of the test solution. Subsequently, the control computer 2 is used to control the start of the pipette tip moving motor 19 and the placement rack moving motor 24. Through the rotation of the pipette tip moving lead screw 20 and the moving belt 25, the universal pipette tip 8 extends into the test solution tank 9. At this time, the solenoid valves of the liquid distribution solenoid valve group 3 are activated, and the pulling motor 13 drives the pulling lead screw 14 to rotate, causing the pulling nut 15 to move up and down, so that the pulling block 7 drives a plurality of pulling rods 6 to extract a quantitative test solution. The extracted test solution is extracted from the test solution tank 9 into the injection tube body 5 through the liquid distribution through hole 111. Subsequently, the deep well plate 10 is controlled to move below the universal pipette tip 8, and the universal pipette tip 8 moves down into the hole groove of the deep well plate 10. Then, the pulling block 7 pushes the pulling rod 6 into the injection tube body 5 to squeeze the extracted quantitative test solution into the corresponding hole groove of the deep well plate 10. When the liquid distribution work is completed, the solenoid valves of the liquid outlet solenoid valve group 4 are activated, and the pulling motor 13 and the pulling lead screw 14 drive the pulling block 7 to move again, so that a plurality of pulling rods 6 extract the quantitative test solution extracted into the deep well plate 10 into the injection tube body 5 through the liquid distribution side hole 112, and then push the pulling rod to sequentially extract the test solution placed in the deep well plate 10 into the corresponding reagent bottles for standby through the liquid distribution side hole 112.

[0043] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fully automatic micro-dispenser, comprising a housing (1) and a control computer (2), wherein the control computer (2) is arranged on the housing (1), and characterized in that: A plurality of syringe tubes are vertically and parallelly arranged in the shell (1); a liquid separation solenoid valve group (3) and a liquid outlet solenoid valve group (4) are fixedly arranged in the shell (1); the liquid separation solenoid valve group (3) and the liquid outlet solenoid valve group (4) are both provided with solenoid valves having the same number as the syringe tubes; the syringe tube comprises an injection tube body (5) and a draw rod (6) that moves back and forth in the injection tube body (5); a draw block (7) is vertically slidably connected in the shell (1); one end of the draw rod (6) that extends out of the injection tube body (5) is fixedly connected to the draw rod (7). On the pull-out block (7), one end of each of the injection tube bodies (5) away from the pull-out block (7) is connected to each solenoid valve of the liquid separation solenoid valve group (3) and the liquid outlet solenoid valve group (4) respectively; universal suction tips (8) having the same number as the injection tubes are movably arranged in the shell (1); a test liquid tank (9) for storing a test liquid and a deep-hole plate (10) for storing a quantitative test liquid after separation are movably connected at the bottom of the shell (1); the control computer (2) controls the actions of the solenoid valve, the deep-hole plate (10), the test liquid tank (9) and the universal suction tip (8).

2. The fully automatic micro-dispenser according to claim 1, characterized in that: A liquid separation block (11) is fixedly connected inside the housing (1), and a plurality of vertically penetrating liquid separation through holes (111) are provided on the liquid separation block (11), and the injection tube body (5) is inserted into the corresponding liquid separation through holes (111) from below, and a plurality of liquid separation side holes (112) connected to the liquid separation through holes (111) are provided on the side walls of the liquid separation through holes (111), and the liquid separation through holes (111) are connected to the solenoid valves of the liquid separation solenoid valve group (3) in a one-to-one correspondence, and the liquid separation side holes (112) are connected to the solenoid valves of the liquid outlet solenoid valve group (4) in a one-to-one correspondence.

3. The fully automatic micro-dispenser according to claim 2, characterized in that: A connection panel (12) is vertically fixedly connected inside the shell (1), the liquid separation block (11) is fixedly connected to the connection panel (12), a pulling motor (13) is fixedly connected to the side of the connection panel (12) facing away from the liquid separation block (11), the output end of the pulling motor (13) is coaxially fixedly connected to a pulling screw rod (14), a pulling screw rod (14) is threadedly rotatably connected to a pulling nut (15), the pulling nut (15) is fixedly connected to the pulling block (7), and the pulling motor (13) is electrically connected to the control computer (2).

4. The fully automatic micro-dispenser according to claim 3, characterized in that: Two pull-out slide rails (17) are symmetrically fixedly connected to the connection panel (12), each of the pull-out slide rails (17) is slidably connected to a pull-out slider (18), a slider connecting plate (16) is connected between the two pull-out sliders (18), the pull-out block (7) is fixedly connected to the slider connecting plate (16), and the slider connecting plate (16) is fixedly connected to the pull-out nut (15).

5. The fully automatic micro-dispenser according to claim 1, characterized in that: The bottom of the housing (1) is fixedly connected to a suction head moving motor (19); the output end of the suction head moving motor (19) is coaxially fixedly connected to a suction head moving lead screw (20); a lead screw nut (21) is threadedly rotatably connected to the suction head moving lead screw (20); a suction head placement rack (22) is fixedly connected to the lead screw nut (21); a plurality of universal suction heads (8) are placed on the suction head placement rack (22); and the suction head moving motor (19) is electrically connected to a control computer (2).

6. The fully automatic micro-dispenser according to claim 5, characterized in that: The bottom of the shell (1) is slidably connected to a liquid separation rack (23), the test liquid tank (9) and the deep well plate (10) are arranged on the liquid separation rack (23), the bottom of the shell (1) is fixedly connected to a rack moving motor (24), the output end of the rack moving motor (24) drives a moving belt (25) to rotate, a rack fixing clamp (26) is clamped on the moving belt (25), the rack fixing clamp (26) is fixedly connected to the bottom of the liquid separation rack (23), and the rack moving motor (24) is electrically connected to a control computer (2).

7. The fully automatic micro-dispenser according to claim 6, characterized in that: The liquid separation rack (23) is provided with an overflow groove (27), the liquid separation rack (23) is provided with an overflow hole (28) connected to the overflow groove (27), and an overflow liquid storage tank (29) for receiving the test liquid flowing down from the overflow hole (28) is arranged below the liquid separation rack (23).

8. The fully automatic micro-dispenser according to claim 6, characterized in that: The tip placement rack (22) and the liquid dispensing placement rack (23) are both fixedly connected with induction sheets (30), and the housing (1) is fixedly connected with sensors (31) corresponding to the two induction sheets (30), and the sensors (31) are electrically connected to the control computer (2).

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