Liquid inlet device for micro-fluidic chip

Abstract

A microfluidic chip liquid inlet device disclosed by the present invention comprises a bottom plate and supporting legs, a liquid inlet structure is arranged above the bottom plate, the liquid inlet structure comprises a liquid inlet mechanism, a liquid injection mechanism and a feeding mechanism, and the liquid inlet mechanism comprises a first motor, a rotating rod, a mounting plate, a rotating rod and a first bearing plate. The output end of the first motor is connected with the bottom of the rotating rod, the top of the rotating rod is connected with the bottom of the mounting plate, and the bottom of the mounting plate is connected with the top of the rotating rod. According to the invention, micro-fluidic chips with different sizes can be rapidly and conveniently clamped and fixed, and a plurality of micro-fluidic chips can be subjected to liquid feeding work at the same time, so that the problem that the plurality of micro-fluidic chips cannot be rapidly and conveniently used at the same time is solved; and moreover, the problem that the micro-fluidic chips with different sizes cannot be quickly and conveniently clamped and fixed is solved, and the working efficiency of the liquid inlet device is improved.

Description

Technical Field

[0001] The present invention relates to the field of microfluidic technology, in particular to a liquid inlet device for a microfluidic chip. Background Art

[0002] Microfluidic chip technology is a technology that manipulates fluids in micron-scale space. It has been widely used in biomedicine, chemical analysis and other fields. When using microfluidic chips to detect Escherichia coli, etc., the reaction solution needs to be added to the various liquid reservoirs of the microfluidic chip first. During the use of the microfluidic chip, the liquid inlet device plays a vital role, so it is necessary to use a liquid inlet device.

[0003] When using an existing liquid inlet device, a single microfluidic chip is usually placed in the liquid inlet device for use. However, in actual use, multiple microfluidic chips cannot be used quickly and conveniently at the same time, and microfluidic chips of different sizes cannot be clamped and fixed quickly and conveniently, thereby reducing the working efficiency of the liquid inlet device.

[0004] Therefore, it is necessary to design a liquid inlet device for a microfluidic chip. Summary of the Invention

[0005] The object of the present invention is to provide a liquid inlet device for a microfluidic chip to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a microfluidic chip liquid inlet device, comprising a bottom plate and supporting legs, wherein a liquid inlet structure is provided above the bottom plate; The liquid inlet structure includes a liquid inlet mechanism, a liquid injection mechanism and a feeding mechanism; The liquid inlet mechanism includes a motor 1, a rotating rod, a mounting plate, a rotating rod, and a supporting plate 1. The output end of the motor 1 is interconnected with the bottom of the rotating rod, the top of the rotating rod is interconnected with the bottom of the mounting plate, the bottom of the mounting plate is connected to the top of the rotating rod, the bottom of the rotating rod is slidably connected to the inner side of the supporting plate 1, the bottom of the mounting plate is fixedly installed with a displacement plate, the top of the mounting plate is fixedly installed with a placement plate, the inner side of the placement plate is fixedly installed with a pressure sensor, the inner side of the mounting plate is fixedly installed with a double-headed electric telescopic rod, one end of the double-headed electric telescopic rod is fixedly installed with a movable plate, the top of the movable plate is fixedly installed with a clamping plate, the inner wall of the placement plate is fixedly installed with an ejection cylinder, the top of the bottom plate is fixedly installed with a fixed plate 1, and one side of the fixed plate 1 is fixedly installed with an infrared sensor.

[0007] According to the above technical solution, there are eight rotating rods, which are symmetrically distributed at the bottom of the mounting plate. A rotating groove is provided at the top of the carrier plate. The bottom of the rotating rod is slidably connected to the inner wall of the rotating groove, so that the microfluidic chip can be rotated quickly and conveniently, and microfluidic chips of different sizes can be clamped and fixed quickly and conveniently, so that they can be used better.

[0008] According to the above technical solution, the number of the displacement plates is six, and the displacement plates are symmetrically distributed at the bottom of the mounting plate. The number of the placement plates is six, and the placement plates are symmetrically distributed at the top of the mounting plate, so that multiple microfluidic chips can be filled with liquid at the same time, thereby better performing the liquid filling work.

[0009] According to the above technical solution, a movable groove is opened on the inner side of the placement plate, the outer wall of the movable plate is slidably connected to the inner wall of the movable groove, the number of the ejection cylinders is four, and the ejection cylinders are symmetrically distributed on the inner wall of the placement plate, the number of the infrared sensors is three, and the infrared sensors are symmetrically distributed on one side of the fixed plate, so that the microfluidic chip can be better unloaded and better controlled, and thus can be better used.

[0010] According to the above technical solution, the liquid injection mechanism includes a second fixed plate, a second motor, a threaded rod, an adjustment plate, and a storage box. The top of the second fixed plate is connected to the bottom of the second motor, the output end of the second motor is connected to the top of the threaded rod, the outer wall of the threaded rod is threadedly connected to the inner wall of the adjustment plate, the top of the adjustment plate is connected to the bottom of the storage box, and a guide pipe is provided at the top of the storage box. A nozzle is fixedly installed at the bottom of the adjustment plate, a support plate is fixedly installed on one side of the bottom plate, and a guide plate is fixedly installed at one end of the support plate.

[0011] According to the above technical solution, the shape of the fixed plate 2 is L-shaped, the shape of the adjustment plate is T-shaped, the shape of the support plate is L-shaped, the number of the support plates is two, and the support plates are symmetrically distributed on one side of the bottom plate, so that the liquid inlet work can be better performed, and the microfluidic chip can be better guided, and thus it can be better used.

[0012] According to the above technical solution, an adjustment groove is opened on one side of the fixed plate, the bottom of the threaded rod is rotatably connected to the inner wall of the adjustment groove, and the outer wall of the adjustment plate is slidably connected to the inner wall of the adjustment groove, so that the height of the nozzle can be adjusted quickly and conveniently, and the liquid filling work can be better performed.

[0013] According to the above technical solution, the feeding mechanism includes a connecting plate, a conveyor belt, a limiting plate, a second supporting plate, and an electric telescopic rod. One side of the connecting plate is connected to one end of the conveyor belt, the top of the bottom plate is connected to the bottom of the limiting plate, one side of the limiting plate is connected to one end of the second supporting plate, the inner wall of the limiting plate is connected to the outer wall of the electric telescopic rod, a blocking plate is fixedly installed at the bottom of the electric telescopic rod, and the telescopic rod is fixedly installed on the top of the blocking plate.

[0014] According to the above technical solution, the shape of the limiting plate is U-shaped, and the number of the telescopic rods is two, and the telescopic rods are symmetrically distributed on the top of the blocking plate, so that the position of the blocking plate can be adjusted quickly and conveniently, thereby better transporting and loading the microfluidic chip.

[0015] According to the above technical solution, the bottom of the base plate is connected to the top of the support leg, the top of the base plate is connected to the bottom of the motor, one side of the base plate is connected to one end of the fixed plate, and one end of the base plate is connected to one end of the connecting plate.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The microfluidic chip liquid inlet device, by setting a liquid inlet mechanism, can quickly and conveniently clamp and fix microfluidic chips of different sizes, and can simultaneously fill multiple microfluidic chips with liquid, thereby solving the problem of not being able to quickly and conveniently use multiple microfluidic chips at the same time and not being able to quickly and conveniently clamp and fix microfluidic chips of different sizes, and improving the working efficiency of the liquid inlet device.

[0017] 2. The liquid inlet device of the microfluidic chip can quickly and conveniently adjust the height of the nozzle by setting a liquid injection mechanism, so that the liquid can be better injected into the microfluidic chip, and can be better used in conjunction with the liquid inlet mechanism, so that it can be more convenient for operators to use.

[0018] 3. The microfluidic chip liquid inlet device realizes the quick and convenient delivery of the microfluidic chip by setting a loading mechanism, and can quickly and conveniently adjust the position of the blocking plate, thereby better blocking the microfluidic chip, thereby better performing the loading work and improving the convenience of the liquid inlet device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2It is a schematic cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the liquid inlet mechanism of the present invention Figure 1 ; Figure 4 This is a schematic diagram of the structure of the liquid inlet mechanism of the present invention Figure 2 ; Figure 5 It is a structural schematic diagram of the liquid injection mechanism of the present invention; Figure 6 It is a structural schematic diagram of the feeding mechanism of the present invention.

[0020] In the figure: 1, bottom plate; 2, support leg; 3, liquid inlet mechanism; 301, motor 1; 302, rotating rod; 303, mounting plate; 304, rotating rod; 305, carrying plate 1; 306, displacement plate; 307, placement plate; 308, pressure sensor; 309, double-headed electric telescopic rod; 310, moving plate; 311, clamping plate; 312, ejection cylinder; 313, fixing plate 1; 314, infrared sensor; 4. Liquid injection mechanism; 401. Fixed plate 2; 402. Motor 2; 403. Threaded rod; 404. Adjustment plate; 405. Storage box; 406. Guide tube; 407. Nozzle; 408. Support plate; 409. Guide plate; 5. Feeding mechanism; 501. Connecting plate; 502. Conveyor belt; 503. Limiting plate; 504. Carrying plate 2; 505. Electric telescopic rod; 506. Blocking plate; 507. Telescopic rod. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0022] See also Figures 1-6 , the present invention provides a technical solution: a microfluidic chip liquid inlet device, comprising a bottom plate 1 and a supporting leg 2, a liquid inlet structure is provided above the bottom plate 1; The liquid inlet structure includes a liquid inlet mechanism 3, a liquid injection mechanism 4 and a feeding mechanism 5; The liquid inlet mechanism 3 includes a motor 301, a rotating rod 302, a mounting plate 303, a rotating rod 304, and a supporting plate 305. The output end of the motor 301 is connected to the bottom of the rotating rod 302, the top of the rotating rod 302 is connected to the bottom of the mounting plate 303, the bottom of the mounting plate 303 is connected to the top of the rotating rod 304, the bottom of the rotating rod 304 is connected to the inner side of the supporting plate 305 in a sliding manner, the bottom of the mounting plate 303 is fixedly installed with a displacement plate 306, and the top of the mounting plate 303 is fixed. A placement plate 307 is fixedly installed, a pressure sensor 308 is fixedly installed on the inner side of the placement plate 307, a double-headed electric telescopic rod 309 is fixedly installed on the inner side of the mounting plate 303, a movable plate 310 is fixedly installed on one end of the double-headed electric telescopic rod 309, a clamping plate 311 is fixedly installed on the top of the movable plate 310, an ejection cylinder 312 is fixedly installed on the inner wall of the placement plate 307, a fixed plate 313 is fixedly installed on the top of the bottom plate 1, and an infrared sensor 314 is fixedly installed on one side of the fixed plate 313; In this embodiment, there are eight rotating rods 304, which are symmetrically distributed at the bottom of the mounting plate 303. A rotating groove is provided at the top of the first carrier plate 305. The bottom of the rotating rods 304 is slidably connected to the inner wall of the rotating groove, so that the microfluidic chip can be rotated quickly and conveniently, and microfluidic chips of different sizes can be clamped and fixed quickly and conveniently, thereby enabling better use. Furthermore, there are six displacement plates 306, which are symmetrically distributed on the bottom of the mounting plate 303, and six placement plates 307, which are symmetrically distributed on the top of the mounting plate 303, so that multiple microfluidic chips can be filled with liquid at the same time, thereby better performing the liquid filling work; Furthermore, a movable groove is opened on the inner side of the placement plate 307, and the outer wall of the movable plate 310 is slidably connected to the inner wall of the movable groove. There are four ejection cylinders 312, and the ejection cylinders 312 are symmetrically distributed on the inner wall of the placement plate 307. There are three infrared sensors 314, and the infrared sensors 314 are symmetrically distributed on one side of the fixed plate 313, so that the microfluidic chip can be better unloaded and better controlled, and thus can be better used.

[0023] When the microfluidic chip needs to be fed with liquid, the operator places the microfluidic chip on the conveyor belt 502 and starts the loading mechanism 5 to load the chip in batches. When the microfluidic chip enters the placement plate 307, it can squeeze the pressure sensor 308. When the pressure sensor 308 is under pressure, it can control the double-headed electric telescopic rod 309 to work, and the double-headed electric telescopic rod 309 drives the moving plate 310 to move. The movement of the moving plate 310 drives the clamping plate 311 to move, and the movement of the clamping plate 311 can quickly move the microfluidic chip. The microfluidic chips of different sizes can be conveniently clamped and fixed. At this time, the motor 301 is started to drive the rotating rod 302 to rotate, and the rotating rod 302 is driven to rotate the mounting plate 303, and the mounting plate 303 is driven to rotate and drive the rotating rod 304 to slide on the inner side of the carrier plate 305, thereby increasing the stability of the mounting plate 303 during rotation. The mounting plate 303 is driven to rotate the placement plate 307, and the placement plate 307 is driven to rotate the microfluidic chip, so that the microfluidic chip can be adjusted to the liquid inlet position. The liquid is fed into the container 307 by starting the liquid injection mechanism 4. As the mounting plate 303 rotates continuously, the displacement plate 306 is driven to rotate. Each displacement plate 306 is on the same horizontal line as each placement plate 307. When the displacement plate 306 rotates and contacts the infrared ray emitted by the first infrared sensor 314, the first infrared sensor 314 controls the feeding mechanism 5 to open and close. When the displacement plate 306 contacts the infrared ray emitted by the second infrared sensor 314, the liquid is fed into the container 307 by the liquid injection mechanism 4. When the displacement plate 306 comes into contact with the infrared rays emitted by the third infrared sensor 314, the double-headed electric telescopic rod 309 and the ejection cylinder 312 can be controlled to work at the same time. The double-headed electric telescopic rod 309 can drive the clamping plate 311 to move, canceling the clamping and fixation of the microfluidic chip, and through the operation of the ejection cylinder 312, the microfluidic chip that has completed liquid filling can be ejected from the placement plate 307 and discharged through the guide plate 409, which can make it more convenient for operators to use and improve the working efficiency of the liquid filling device. Example

[0024] On the basis of Example 1, the liquid injection mechanism 4 includes a second fixed plate 401, a second motor 402, a threaded rod 403, an adjustment plate 404, and a storage box 405. The top of the second fixed plate 401 is interconnected with the bottom of the second motor 402, the output end of the second motor 402 is interconnected with the top of the threaded rod 403, the outer wall of the threaded rod 403 is threadedly connected to the inner wall of the adjustment plate 404, the top of the adjustment plate 404 is interconnected with the bottom of the storage box 405, and the top of the storage box 405 is connected to the guide pipe 406. The bottom of the adjustment plate 404 is fixedly installed with a nozzle 407, a support plate 408 is fixedly installed on one side of the bottom plate 1, and a guide plate 409 is fixedly installed on one end of the support plate 408; In this embodiment, the second fixing plate 401 is L-shaped, the adjustment plate 404 is T-shaped, and the support plate 408 is L-shaped. There are two support plates 408, and the support plates 408 are symmetrically distributed on one side of the bottom plate 1, so as to better perform the liquid inlet work and better guide the microfluidic chip, thereby enabling better use. Furthermore, an adjustment groove is opened on one side of the fixing plate 401, the bottom of the threaded rod 403 is rotatably connected to the inner wall of the adjustment groove, and the outer wall of the adjustment plate 404 is slidably connected to the inner wall of the adjustment groove, so that the height of the nozzle 407 can be adjusted quickly and conveniently, thereby better performing the liquid filling work.

[0025] When the microfluidic chip needs to be fed with liquid, the operator places the microfluidic chip on the conveyor belt 502 and starts the loading mechanism 5 to load the chip in batches. After the microfluidic chip enters the placement plate 307, the liquid feeding mechanism 3 is started to clamp and fix microfluidic chips of different sizes, and the microfluidic chip can be driven to rotate, so that multiple microfluidic chips can be fed with liquid at the same time. When liquid feeding is required, the threaded rod 403 is driven to rotate by starting the motor 2 402, and the threaded rod 403 is driven to rotate. The rotation of the rod 403 drives the adjustment plate 404 to move, and the movement of the adjustment plate 404 drives the storage box 405 and the nozzle 407 to move, so that the height of the nozzle 407 can be adjusted quickly and conveniently. By starting the nozzle 407, the molten liquid stored in the storage box 405 can be sprayed onto the microfluidic chip, so that the liquid filling work can be carried out quickly and conveniently. By connecting one end of the guide tube 406 to an external device, the molten liquid can be temporarily stored in the storage box 405, which makes the liquid filling work more convenient and more convenient for operators to use. Example

[0026] On the basis of the first embodiment, the feeding mechanism 5 includes a connecting plate 501, a conveyor belt 502, a limiting plate 503, a second carrying plate 504, and an electric telescopic rod 505. One side of the connecting plate 501 is interconnected with one end of the conveyor belt 502, the top of the bottom plate 1 is interconnected with the bottom of the limiting plate 503, one side of the limiting plate 503 is interconnected with one end of the second carrying plate 504, the inner wall of the limiting plate 503 is interconnected with the outer wall of the electric telescopic rod 505, and a blocking plate 506 is fixedly installed at the bottom of the electric telescopic rod 505, and a telescopic rod 507 is fixedly installed on the top of the blocking plate 506; In this embodiment, the limiting plate 503 is U-shaped, and there are two telescopic rods 507 symmetrically distributed on the top of the blocking plate 506 , so that the position of the blocking plate 506 can be adjusted quickly and conveniently, thereby enabling better transportation and loading of the microfluidic chip. Furthermore, the bottom of the base plate 1 is connected to the top of the support leg 2, the top of the base plate 1 is connected to the bottom of the motor 1 301, one side of the base plate 1 is connected to one end of the fixing plate 2 401, and one end of the base plate 1 is connected to one end of the connecting plate 501.

[0027] When the microfluidic chip needs to be fed with liquid, the operator places the microfluidic chip on the conveyor belt 502 and starts the conveyor belt 502 to quickly and conveniently transport the microfluidic chip. When the feeding work is not needed, the conveyor belt 502 is stopped and the electric telescopic rod 505 is started to drive the blocking plate 506 to move. The movement of the blocking plate 506 drives the telescopic rod 507 to extend and retract, thereby increasing the stability of the blocking plate 506 when moving. The blocking plate 506 moves so that it can contact the carrier plate 2 504, thereby enabling the microfluidic chip to be fed into the microfluidic chip. The sheet is blocked, so that the loading work can be carried out better. After the microfluidic chip enters the placement plate 307, the microfluidic chips of different sizes can be clamped and fixed by starting the liquid inlet mechanism 3, and the microfluidic chip can be driven to rotate, so that multiple microfluidic chips can be filled with liquid at the same time. When liquid filling work is required, the height of the nozzle 407 can be quickly and conveniently adjusted by starting the liquid injection mechanism 4, so that the liquid filling work can be better carried out, which is more convenient for operators to use and further improves the working efficiency of the liquid filling device.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A microfluidic chip liquid inlet device, comprising a base plate (1) and support legs (2), characterized in that: A liquid inlet structure is provided above the bottom plate (1); The liquid inlet structure comprises a liquid inlet mechanism (3), a liquid injection mechanism (4) and a feeding mechanism (5); The liquid inlet mechanism (3) comprises a motor (301), a rotating rod (302), a mounting plate (303), a rotating rod (304), and a supporting plate (305). The output end of the motor (301) is connected to the bottom of the rotating rod (302), the top of the rotating rod (302) is connected to the bottom of the mounting plate (303), the bottom of the mounting plate (303) is connected to the top of the rotating rod (304), the bottom of the rotating rod (304) is connected to the inner side of the supporting plate (305) in a sliding manner, the bottom of the mounting plate (303) is fixedly mounted with a displacement plate (306), and the top of the mounting plate (303) is connected to the top of the rotating rod (304). A placement plate (307) is fixedly installed on the bottom, a pressure sensor (308) is fixedly installed on the inner side of the placement plate (307), a double-headed electric telescopic rod (309) is fixedly installed on the inner side of the mounting plate (303), a moving plate (310) is fixedly installed on one end of the double-headed electric telescopic rod (309), a clamping plate (311) is fixedly installed on the top of the moving plate (310), an ejection cylinder (312) is fixedly installed on the inner wall of the placement plate (307), a fixed plate 1 (313) is fixedly installed on the top of the bottom plate (1), and an infrared sensor (314) is fixedly installed on one side of the fixed plate 1 (313).

2. A microfluidic chip liquid inlet device according to claim 1, characterized in that: The number of the rotating rods (304) is eight, and the rotating rods (304) are symmetrically distributed on the bottom of the mounting plate (303). A rotating groove is provided on the top of the first supporting plate (305), and the bottom of the rotating rod (304) is slidably connected to the inner wall of the rotating groove.

3. The microfluidic chip liquid inlet device according to claim 1, characterized in that: The number of the displacement plates (306) is six, and the displacement plates (306) are symmetrically distributed on the bottom of the mounting plate (303). The number of the placement plates (307) is six, and the placement plates (307) are symmetrically distributed on the top of the mounting plate (303).

4. The microfluidic chip liquid inlet device according to claim 1, characterized in that: A movable groove is provided on the inner side of the placement plate (307), and the outer wall of the movable plate (310) is slidably connected to the inner wall of the movable groove. The number of the ejection cylinders (312) is four, and the ejection cylinders (312) are symmetrically distributed on the inner wall of the placement plate (307). The number of the infrared sensors (314) is three, and the infrared sensors (314) are symmetrically distributed on one side of the fixed plate (313).

5. The microfluidic chip liquid inlet device according to claim 1, characterized in that: The injection mechanism (4) comprises a second fixing plate (401), a second motor (402), a threaded rod (403), an adjustment plate (404), and a storage box (405). The top of the second fixing plate (401) is connected to the bottom of the second motor (402), the output end of the second motor (402) is connected to the top of the threaded rod (403), the outer wall of the threaded rod (403) is threadedly connected to the inner wall of the adjustment plate (404), the top of the adjustment plate (404) is connected to the bottom of the storage box (405), the top of the storage box (405) is connected to the guide pipe (406), the bottom of the adjustment plate (404) is fixedly installed with a nozzle (407), a support plate (408) is fixedly installed on one side of the bottom plate (1), and a guide plate (409) is fixedly installed on one end of the support plate (408).

6. The microfluidic chip liquid inlet device according to claim 5, characterized in that: The second fixing plate (401) is in an L-shape, the adjustment plate (404) is in a T-shape, the support plate (408) is in an L-shape, and there are two support plates (408). The support plates (408) are symmetrically distributed on one side of the bottom plate (1).

7. The microfluidic chip liquid inlet device according to claim 5, characterized in that: An adjustment slot is provided on one side of the second fixing plate (401), the bottom of the threaded rod (403) is rotatably connected to the inner wall of the adjustment slot, and the outer wall of the adjustment plate (404) is slidably connected to the inner wall of the adjustment slot.

8. The microfluidic chip liquid inlet device according to claim 1, characterized in that: The feeding mechanism (5) includes a connecting plate (501), a conveyor belt (502), a limiting plate (503), a second carrier plate (504), and an electric telescopic rod (505). One side of the connecting plate (501) is connected to one end of the conveyor belt (502). The top of the bottom plate (1) is connected to the bottom of the limiting plate (503). One side of the limiting plate (503) is connected to one end of the second carrier plate (504). The inner wall of the limiting plate (503) is connected to the outer wall of the electric telescopic rod (505). A blocking plate (506) is fixedly installed at the bottom of the electric telescopic rod (505), and a telescopic rod (507) is fixedly installed at the top of the blocking plate (506).

9. The microfluidic chip liquid inlet device according to claim 8, characterized in that: The limiting plate (503) is U-shaped, and there are two telescopic rods (507), which are symmetrically distributed on the top of the blocking plate (506).

10. The microfluidic chip liquid inlet device according to claim 1, characterized in that: The bottom of the base plate (1) is connected to the top of the support leg (2), the top of the base plate (1) is connected to the bottom of the motor 1 (301), one side of the base plate (1) is connected to one end of the fixing plate 2 (401), and one end of the base plate (1) is connected to one end of the connecting plate (501).

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