An immunological test microplate sample adding auxiliary device

Abstract

The utility model belongs to immune inspection equipment technical field, and disclose a kind of immune inspection microplate sample adding auxiliary device, including auxiliary workbench, the top outer wall of auxiliary workbench is equipped with placing groove, the bottom inner wall center of placing groove is set to be placed positioning area, and the top of placing positioning area is placed with microplate, and the inner wall of auxiliary workbench is fixed with the ear plate of symmetry on the both sides of placing positioning area, the top outer wall of ear plate is inlayed and fixed with hydraulic rod, and the bottom end of hydraulic rod telescopic rod is fixed with the pressure holding seat, and the top outer wall of auxiliary workbench is provided with auxiliary positioning sample adding assembly;The utility model is provided with linkage splash-proof assembly, the pressure in front end cylinder before sample adding is increased, part liquid enters telescopic liquid bag by pressure relief pipe, so that it expands and pushes down cover ring, before liquid injection head extends into microhole, cover ring is first contacted with the surface of microplate and forms local seal, effectively prevent liquid splashing or aerosol formation when sample adding, reduce the risk of cross contamination between holes.

Description

Technical Field

[0001] This utility model belongs to the technical field of immunoassay testing equipment, specifically an auxiliary device for adding samples to a microplate for immunoassay testing. Background Technology

[0002] In immunoassay analysis, microplates (such as ELISA plates) are commonly used reaction carriers. Microplates are transparent plastic plates specifically designed to hold test samples. These plates have multiple rows of appropriately sized wells, with the corresponding analytes or samples embedded in each well. Currently, sample loading is mostly done manually using pipettes, which suffers from low efficiency, high labor intensity, and is prone to visual fatigue leading to loading errors or cross-contamination. Loading aids are also used during the loading process to assist in fixing the microplate and loading the sample. Patent CN220478875U discloses an immunoassay microplate loading aid. The device includes a main body and a convenient mechanism, with the convenient mechanism located at the lower end of the main body. The main body includes a sample storage box, a sliding groove, and a telescopic top cover. The sliding groove is fixedly installed at the left and right ends of the inner end of the sample storage box. The telescopic top cover is movably installed in the middle of the sliding groove and is located at the upper end of the sample storage box. The main body also includes a handle, a mounting groove, and an adjustment component. The handle is fixedly installed at the upper end of the telescopic top cover. This immunoassay microplate sample addition auxiliary device, through the installation and improvement of the main body, enhances the adjustment capability of this invention. In actual use, the height of the microplate body can be conveniently adjusted according to the sample addition needs.

[0003] However, existing microplate sample loading aids for immunoassay testing are limited in function and usually lack effective splash prevention measures. Problems such as sample droplets from the loading needle and sample splashing still exist, which can easily lead to cross-contamination between wells. In addition, cleaning the loading needle after sample loading often requires manual operation, which is cumbersome and the disposal of cleaning waste is inconvenient. Positioning during the sample loading process also mainly relies on manual visual inspection, which poses a risk of inaccurate positioning.

[0004] To address these issues, a microplate sample loading auxiliary device for immunoassay testing is proposed. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides an auxiliary device for microplate sample loading in immunoassay, including an auxiliary worktable. A placement groove is formed on the top outer wall of the auxiliary worktable, and a placement positioning area is set at the center of the bottom inner wall of the placement groove. A microplate is placed above the placement positioning area. Ear plates are symmetrically fixed on the inner walls of the auxiliary worktable on both sides of the placement positioning area. Hydraulic rods are embedded and fixed on the top outer walls of the ear plates, and a pressure-holding seat is fixed at the bottom end of the telescopic rod of the hydraulic rod. An auxiliary positioning sample loading component is provided on the top outer wall of the auxiliary worktable.

[0006] In the above technical solution, preferably, the auxiliary positioning and sampling assembly includes movable water tanks symmetrically arranged on the outer walls of both sides of the auxiliary workbench. A stepper drive wheel is fixed to the bottom outer wall of the movable water tank. A horizontal plate is fixed to the top outer wall of the movable water tank. A horizontal groove is formed on one side of the horizontal plate, and a movable block is inserted into the groove. A screw hole is formed through one end of the movable block on its outer wall. A screw rod is screwed into the screw hole, and both ends of the screw rod are rotatably connected to the inner walls of both ends of the horizontal groove. A stepper motor is embedded and fixed to the outer wall of the end of the horizontal plate, and the stepper motor drive shaft and the screw rod are coaxially connected. A mounting base is fixed to one side of the outer wall of the movable block, and the top outer wall of the mounting base... An end cylinder is fixedly embedded in the upper part of the mounting base. A piston is installed inside the end cylinder. A telescopic tube is fixedly embedded in the bottom outer wall of the piston. A first pressure relief valve is fixedly embedded in the top outer wall of the piston, and the first pressure relief valve is connected to the end of the telescopic tube. A liquid injection head is installed through one end of the telescopic tube that passes through the outside of the end cylinder. A spring is fitted on the outer wall of the telescopic tube below the piston. A suction pump is fixed on the top side outer wall of the mounting base. A suction pipe is connected through the suction end of the suction pump. A liquid injection pipe is connected through the pumping end of the suction pump, and one end of the liquid injection pipe is connected to the inside of the top of the end cylinder. A linkage anti-splash assembly is provided on the bottom outer wall of the mounting base. A linkage cleaning assembly is provided on the top inner wall of the auxiliary workbench.

[0007] In the above technical solution, preferably, the linkage splash-proof assembly includes a telescopic liquid bladder fixed around the bottom outer wall of the mounting base. A cover ring is fixed on the bottom outer wall of the telescopic liquid bladder. Side blocks are fixed on both outer walls of the cover ring. Guide rods are fixed on the top outer walls of the side blocks. Guide holes are opened through the top two outer walls of the mounting base. A limit block is fixed at one end of the guide rod that passes through the guide hole. A pressure relief pipe is connected through the top one outer wall of the end cylinder, and a second pressure relief valve is installed through the end of the pressure relief pipe. The bottom end of the pressure relief pipe is connected to the inside of the telescopic liquid bladder.

[0008] In the above technical solution, preferably, the linkage cleaning component includes a liquid collection chamber formed on the inner wall of the bottom of the auxiliary workbench, an inclined filter plate is provided on the inner wall of the middle part of the liquid collection chamber, collection holes are respectively opened through the bottom inner walls of the placement slot on both sides of the placement positioning area, a return pipe is connected through the outer wall of one side of the bottom of the liquid collection chamber, and one end of the return pipe is connected to the inside of the mobile water tank, a one-way valve is installed through the end of the return pipe, a ring pipe is fitted and fixed on the outer wall of the end of the side block, a liquid delivery pipe is connected through the outer wall of the bottom end of the telescopic liquid bladder and the inner wall of the ring pipe, and a third pressure relief valve and an opening and closing valve are respectively installed through the end of the liquid delivery pipe, spray heads are distributed and connected through the outer wall of the ring pipe, a suction pipe is connected through the bottom outer wall of one side of the mobile water tank, and a connecting female head is installed at the end of the suction pipe, and a connecting female head is installed at the bottom end of the suction pipe.

[0009] In the above technical solution, preferably, the return pipe, the suction pipe and the injection pipe are all telescopic hoses.

[0010] In the above technical solution, preferably, sliders are fixed on the opposite outer walls of the mobile water tank, and sliding grooves are provided on the two outer walls of the auxiliary workbench, with one end of the slider inserted into the inside of the sliding groove.

[0011] In the above technical solution, preferably, an n-shaped frame is fixed on the outer wall of the end of the auxiliary workbench, and a telescopic curtain is fixed on one side of the outer wall of the n-shaped frame, with one end of the telescopic curtain being fixedly connected to one side of the outer wall of the movable water tank and the horizontal plate.

[0012] In the above technical solution, preferably, the auxiliary workbench is provided with a door that runs through the outer wall of one side of the bottom end of the inclined filter plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention utilizes an auxiliary positioning and sample addition component. A stepper drive wheel moves a mobile water tank along an auxiliary worktable, while a stepper motor drives a screw to rotate, causing the moving block and mounting base to move laterally. This precisely positions the injection head to the designated sample addition position above the microplate. A suction pump draws liquid through a suction tube and pumps it into the end cylinder through an injection tube, causing the telescopic tube to extend and the injection head to descend for sample addition. This achieves automated and precise sample addition, improving efficiency and accuracy.

[0015] By setting up a linkage anti-splash component, the pressure inside the end cylinder increases before sample addition. Some liquid enters the telescopic liquid bladder through the pressure relief pipe, causing it to expand and push the cap ring down. Before the injection head extends into the micropore, the cap ring first contacts the surface of the microplate to form a local seal, effectively preventing liquid splashing or aerosol formation during sample addition and greatly reducing the risk of cross-contamination between wells.

[0016] By setting up a linkage cleaning component, after sample addition, the female connector at the bottom of the suction tube can be connected to the female connector at the end of the extraction tube. Opening the valve activates the suction pump, drawing out the cleaning solution from the mobile water tank and sending it into the end cylinder via the injection tube. Some of the cleaning solution can be sprayed from the spray head through the delivery tube and ring tube to rinse the surface of the microplate. The rinsing waste liquid flows into the collection chamber through the collection hole, is filtered by the inclined filter plate, and then flows back to the mobile water tank for recycling or centralized treatment via the return pipe and one-way valve. Later, opening the tank door facilitates the cleaning of filter residue, realizing automatic cleaning of the microplate and waste liquid recovery, keeping the workbench clean. The telescopic curtain extends and retracts with the mobile water tank during movement, serving as a dust prevention function when the immunoassay microplate sample addition auxiliary device is idle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 This is a three-dimensional sectional view of the auxiliary workbench in this utility model;

[0019] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This utility model Figure 1 Enlarged structural diagram at point B;

[0021] Figure 5 This is a partial three-dimensional structural diagram of the auxiliary positioning and sampling component in this utility model;

[0022] Figure 6 This utility model Figure 1 Enlarged structural diagram at point C;

[0023] Figure 7 This utility model Figure 1 Enlarged structural diagram at point D;

[0024] Figure 8 This utility model Figure 1 Enlarged structural diagram at point E in the middle.

[0025] In the diagram: 1. Auxiliary workbench; 2. Placement slot; 3. Placement and positioning area; 4. Microplate; 5. Ear plate; 6. Hydraulic rod; 7. Holding seat; 8. Auxiliary positioning and sample addition assembly; 9. Linked anti-splash assembly; 10. Linked cleaning assembly; 11. Slider; 12. Slide groove; 13. N-shaped frame; 14. Telescopic curtain; 15. Box door;

[0026] 801. Movable water tank; 802. Stepper drive wheel; 803. Horizontal plate; 804. Horizontal groove; 805. Movable block; 806. Screw hole; 807. Screw; 808. Stepper motor; 809. Mounting base; 810. End cylinder; 811. Piston; 812. Telescopic tube; 813. First pressure relief valve; 814. Injection head; 815. Spring; 816. Suction pump; 817. Suction tube; 818. Injection tube;

[0027] 901. Telescopic liquid bladder; 902. Cover ring; 903. Side block; 904. Guide rod; 905. Guide hole; 906. Limiting block; 907. Pressure relief pipe; 908. Second pressure relief valve;

[0028] 101. Collection chamber; 102. Inclined filter plate; 103. Collection hole; 104. Return pipe; 105. One-way valve; 106. Ring pipe; 107. Delivery pipe; 108. Third pressure relief valve; 109. Opening and closing valve; 110. Spray head; 111. Suction pipe; 112. Connecting female connector; 113. Connecting female connector. Detailed Implementation

[0029] 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.

[0030] like Figures 1 to 8 As shown, this utility model provides an auxiliary device for microplate sample loading in immunoassay, including an auxiliary workbench 1. A placement groove 2 is provided on the top outer wall of the auxiliary workbench 1. A placement positioning area 3 is set at the center of the bottom inner wall of the placement groove 2, and a microplate 4 is placed above the placement positioning area 3. Ear plates 5 are symmetrically fixed on the inner walls of the auxiliary workbench 1 on both sides of the placement positioning area 3. A hydraulic rod 6 is embedded and fixed on the top outer wall of the ear plate 5, and a pressure holding seat 7 is fixed at the bottom end of the telescopic rod of the hydraulic rod 6. An auxiliary positioning sample loading component 8 is provided on the top outer wall of the auxiliary workbench 1.

[0031] Specifically, the auxiliary positioning and sample addition component 8 includes a movable water tank 801 symmetrically arranged on both outer walls of the auxiliary workbench 1. A stepper drive wheel 802 is fixed on the bottom outer wall of the movable water tank 801, and a horizontal plate 803 is fixed on the top outer wall of the movable water tank 801. A horizontal groove 804 is formed on one side outer wall of the horizontal plate 803, and a movable block 805 is inserted inside the horizontal groove 804. A screw hole 806 is formed through one side outer wall of the end of the movable block 805, and a screw rod 807 is screwed into the screw hole 806. The two ends of the screw rod 807 are rotatably connected to the inner walls of the two ends of the horizontal groove 804. A stepper motor 808 is embedded and fixed on the end outer wall of the horizontal plate 803, and the drive shaft of the stepper motor 808 is coaxially connected to the screw rod 807. A mounting base 809 is fixed on one side outer wall of the movable block 805, and an end cylinder is embedded and fixed on the top outer wall of the mounting base 809. 810, a piston 811 is installed inside the end cylinder 810. A telescopic tube 812 is embedded and fixed on the bottom outer wall of the piston 811. A first pressure relief valve 813 is embedded and fixed on the top outer wall of the piston 811. The first pressure relief valve 813 and the end of the telescopic tube 812 are connected. A liquid injection head 814 is installed through one end of the telescopic tube 812 that passes through the outside of the end cylinder 810. A spring 815 is fitted on the outer wall of the telescopic tube 812 located below the piston 811. A suction pump 816 is fixed on the top side outer wall of the mounting base 809. A suction pipe 817 is connected through the suction end of the suction pump 816. A liquid injection pipe 818 is connected through the pumping end of the suction pump 816. One end of the liquid injection pipe 818 is connected to the inside of the top of the end cylinder 810. A linkage anti-splash component 9 is installed on the bottom outer wall of the mounting base 809. A linkage cleaning component 10 is installed on the top inner wall of the auxiliary workbench 1.

[0032] Specifically, the linkage splash-proof component 9 includes a telescopic liquid bladder 901 that is fixed around the bottom outer wall of the mounting base 809. A cover ring 902 is fixed on the bottom outer wall of the telescopic liquid bladder 901. Side blocks 903 are fixed on the outer walls of both sides of the cover ring 902. Guide rods 904 are fixed on the top outer walls of the side blocks 903. Guide holes 905 are opened through the top outer walls of both sides of the mounting base 809. A limit block 906 is fixed at one end of the guide rod 904 that passes through the outside of the guide hole 905. A pressure relief pipe 907 is connected through the top outer wall of the end cylinder 810. A second pressure relief valve 908 is installed through the end of the pressure relief pipe 907. The bottom end of the pressure relief pipe 907 is connected to the inside of the telescopic liquid bladder 901.

[0033] Specifically, the linkage cleaning component 10 includes a liquid collection chamber 101 located on the inner wall of the bottom of the auxiliary workbench 1. An inclined filter plate 102 is installed on the inner wall of the middle section of the liquid collection chamber 101. Collection holes 103 are respectively opened through the inner walls of the bottom of the placement trough 2 on both sides of the placement positioning area 3. A return pipe 104 is connected through the outer wall of one side of the bottom of the liquid collection chamber 101, with one end of the return pipe 104 connected to the inside of the movable water tank 801. A one-way valve 105 is installed through the end of the return pipe 104. The side block 903... A ring tube 106 is fixedly fitted on the outer wall of the end. A liquid delivery pipe 107 is connected between the outer wall of the bottom end of the telescopic liquid bladder 901 and the inner wall of the ring tube 106. A third pressure relief valve 108 and an opening and closing valve 109 are respectively installed through the end of the liquid delivery pipe 107. A spray head 110 is connected to the outer wall of the ring tube 106. A liquid extraction pipe 111 is connected to the bottom outer wall of one side of the movable water tank 801. A connector 112 is installed at the end of the liquid extraction pipe 111. A connector 113 is installed at the bottom end of the suction pipe 817.

[0034] Specifically, the return tube 104, the suction tube 817, and the injection tube 818 are all telescopic hoses.

[0035] Specifically, sliders 11 are fixed on the opposite outer walls of the mobile water tank 801, and grooves 12 are provided on the outer walls of both sides of the auxiliary workbench 1, with one end of the slider 11 inserted into the inside of the groove 12.

[0036] Specifically, an n-shaped frame 13 is fixed on the outer wall of the end of the auxiliary workbench 1, and a telescopic curtain 14 is fixed on one side of the outer wall of the n-shaped frame 13. One end of the telescopic curtain 14 is fixedly connected to one side of the outer wall of the movable water tank 801 and the horizontal plate 803.

[0037] Specifically, the auxiliary workbench 1 is located on the outer wall of one side of the bottom end of the inclined filter plate 102, and a door 15 is installed through it.

[0038] The working principle and usage process of this utility model are as follows: In use, the microplate 4 is placed in the placement and positioning area 3. The hydraulic rod 6 is activated, causing the pressure seat 7 to move downwards and press the microplate 4. The stepper drive wheel 802 drives the moving water tank 801 to a suitable longitudinal position. The stepper motor 808 drives the screw 807 to rotate. Under the combined transmission of the screw 807 and the screw hole 806, the moving block 805 and the mounting base 809 move laterally, positioning the injection head 814 above the sample loading hole of the microplate 4. The suction pump 816 draws sample liquid from an external container through the suction pipe 817, pumps it into the end cylinder 810 through the injection pipe 818, pushes the piston 811 downwards to compress the spring 815, extends the telescopic tube 812, and lowers the injection head 814 to be positioned above the sample loading hole of the microplate 4, continuously pumping liquid into the end cylinder 810. When the hydraulic pressure inside the cylinder 810 reaches the threshold of the first pressure relief valve 813, the sample solution is injected into the injection head 814 through the telescopic tube 812. During the injection, the threshold of the second pressure relief valve 908 is less than the threshold of the first pressure relief valve 813. During the continuous pumping process, the pressure inside the cylinder 810 increases, and some liquid enters the telescopic liquid bladder 901 through the pressure relief tube 907 and the second pressure relief valve 908, causing it to expand and move the cover ring 902 down to cover the periphery of the sample injection hole of the microporous plate 4, thus preventing splashing during injection. After the injection is completed, the suction pump 816 stops, the spring 815 resets and moves the piston 811 up, the telescopic tube 812 contracts, and the injection head 814 rises. At the same time, the pressure inside the cylinder 810 decreases, the telescopic liquid bladder 901 contracts, and the cover ring 902 moves up to reset, allowing for subsequent injection.

[0039] During cleaning, connect the female connector 113 at the bottom of the suction tube 817 to the female connector 112 at the end of the extraction tube 111, open the opening / closing valve 109, and the suction pump 816 draws out the cleaning solution from the movable water tank 801. The solution is then sent to the end cylinder 810 via the injection tube 818. Part of the liquid enters the telescopic liquid bladder 901 via the pressure relief tube 907 and the second pressure relief valve 908, causing it to expand and move the cover ring 902 downwards to cover the periphery of the sample loading port of the microplate 4. When the water pressure reaches the threshold value of the third pressure relief valve 108... Part of the cleaning solution is sprayed from the spray head 110 through the delivery pipe 107 and the ring pipe 106 to rinse the surface of the microplate 4; the waste liquid flows into the collection chamber 101 through the collection hole 103, is filtered by the inclined filter plate 102, and then flows back to the mobile water tank 801 or centralized treatment through the return pipe 104 and the one-way valve 105; the filter residue can be cleaned by opening the box door 15 later, and the telescopic curtain 14 extends and retracts with the mobile water tank 801 during the movement, which plays a role in preventing dust when the immunoassay microplate 4 sample loading auxiliary device is idle.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for sample loading in an immunoassay microplate, comprising an auxiliary workbench (1), characterized in that, The auxiliary workbench (1) has a placement groove (2) on its top outer wall. The center of the bottom inner wall of the placement groove (2) is set as a placement positioning area (3). A microporous plate (4) is placed above the placement positioning area (3). Ear plates (5) are symmetrically fixed on the inner walls of the auxiliary workbench (1) on both sides of the placement positioning area (3). A hydraulic rod (6) is embedded and fixed on the top outer wall of the ear plate (5). A pressure holding seat (7) is fixed at the bottom of the telescopic rod of the hydraulic rod (6). An auxiliary positioning and sample feeding assembly (8) is provided on the top outer wall of the auxiliary workbench (1).

2. The sample loading auxiliary device for immunoassay microplates according to claim 1, characterized in that: The auxiliary positioning and sampling assembly (8) includes a movable water tank (801) symmetrically arranged on the outer walls of both sides of the auxiliary workbench (1). A stepping drive wheel (802) is fixed on the bottom outer wall of the movable water tank (801), and a horizontal plate (803) is fixed on the top outer wall of the movable water tank (801). A horizontal groove (804) is opened on one side outer wall of the horizontal plate (803), and a movable block (805) is inserted into the horizontal groove (804). A through-hole is opened on one side outer wall of the end of the movable block (805). A screw hole (806) is provided, and a screw rod (807) is screwed into the screw hole (806). The two ends of the screw rod (807) are rotatably connected to the inner walls of the two ends of the transverse groove (804). A stepper motor (808) is embedded and fixed on the outer wall of the end of the transverse plate (803). The drive shaft of the stepper motor (808) and the screw rod (807) are coaxially connected. A mounting base (809) is fixed on one side of the outer wall of the moving block (805). An end cylinder (810) is embedded and fixed on the top outer wall of the mounting base (809). The end cylinder (810) is equipped with a piston (811) inside. A telescopic tube (812) is embedded and fixed on the bottom outer wall of the piston (811). A first pressure relief valve (813) is embedded and fixed on the top outer wall of the piston (811). The first pressure relief valve (813) and the end of the telescopic tube (812) are connected. An injection head (814) is installed through one end of the telescopic tube (812) that passes through the outside of the end cylinder (810). A spring is fitted on the outer wall of the telescopic tube (812) below the piston (811). (815) A suction pump (816) is fixed on the outer wall of the top side of the mounting base (809). The suction end of the suction pump (816) is connected to a suction pipe (817). The pumping end of the suction pump (816) is connected to an injection pipe (818). One end of the injection pipe (818) is connected to the inside of the top of the end cylinder (810). A linkage anti-splash component (9) is provided on the bottom outer wall of the mounting base (809). A linkage cleaning component (10) is provided on the top inner wall of the auxiliary workbench (1).

3. The sample loading auxiliary device for immunoassay microplates according to claim 2, characterized in that: The linkage splash-proof assembly (9) includes a telescopic liquid bladder (901) fixed around the bottom outer wall of the mounting base (809). A cover ring (902) is fixed on the bottom outer wall of the telescopic liquid bladder (901). Side blocks (903) are fixed on the outer walls of both sides of the cover ring (902). Guide rods (904) are fixed on the top outer walls of the side blocks (903). Guide holes (905) are opened through the top outer walls of both sides of the mounting base (809). A limit block (906) is fixed at one end of the guide rod (904) that passes through the outside of the guide hole (905). A pressure relief pipe (907) is connected through the top outer wall of the end cylinder (810). A second pressure relief valve (908) is installed through the end of the pressure relief pipe (907). The bottom end of the pressure relief pipe (907) is connected to the inside of the telescopic liquid bladder (901).

4. The sample loading auxiliary device for immunoassay microplates according to claim 3, characterized in that: The linkage cleaning assembly (10) includes a liquid collection chamber (101) located on the inner wall of the bottom of the auxiliary workbench (1). An inclined filter plate (102) is provided on the inner wall of the middle part of the liquid collection chamber (101). Collection holes (103) are respectively opened through the inner walls of the bottom of the placement slot (2) on both sides of the placement positioning area (3). A return pipe (104) is connected through the outer wall of one side of the bottom of the liquid collection chamber (101), and one end of the return pipe (104) is connected to the inside of the mobile water tank (801). A one-way valve (105) is installed through the end of the return pipe (104). The end of the side block (903) A ring tube (106) is fixedly fitted on the outer wall of the part. A liquid delivery tube (107) is connected between the outer wall of the bottom end of the telescopic liquid bladder (901) and the inner wall of the ring tube (106). A third pressure relief valve (108) and an opening and closing valve (109) are respectively installed through the end of the liquid delivery tube (107). A spray head (110) is distributed and connected through the outer wall of the ring tube (106). A liquid suction tube (111) is connected to the bottom outer wall of one side of the mobile water tank (801). A connecting female head (112) is installed at the end of the liquid suction tube (111). A connecting female head (113) is installed at the bottom end of the suction tube (817).

5. The sample loading auxiliary device for immunoassay microplates according to claim 4, characterized in that: The return pipe (104), suction pipe (817) and injection pipe (818) are all telescopic hoses.

6. The sample loading auxiliary device for immunoassay microplates according to claim 2, characterized in that: The mobile water tank (801) has sliders (11) fixed on its opposite outer walls. The auxiliary workbench (1) has grooves (12) on its two outer walls, and one end of the slider (11) is inserted into the groove (12).

7. The sample loading auxiliary device for immunoassay microplates according to claim 2, characterized in that: An n-shaped frame (13) is fixed on the outer wall of the end of the auxiliary workbench (1), and a telescopic curtain (14) is fixed on one side of the outer wall of the n-shaped frame (13). One end of the telescopic curtain (14) is fixedly connected to one side of the outer wall of the movable water tank (801) and the horizontal plate (803).

8. The sample loading auxiliary device for immunoassay microplates according to claim 4, characterized in that: The auxiliary workbench (1) is located on the outer wall of the bottom end of the inclined filter plate (102) and has a door (15) installed through it.

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