Sample filling structure of cell sorter

Abstract

The utility model relates to the field of cell sorters, in particular to a sample filling structure of a cell sorter, which comprises a bearing platform, the device further comprises a sealing assembly, a liquid injection assembly, a gas injection assembly, a lifting assembly, a liquid scraping assembly and a braking assembly. A sealing assembly is arranged at the upper end of the bearing table. Liquid is injected into the rotating cylinder through the liquid injection assembly, then the braking assembly is started to drive the rotating cylinder to rotate, and the liquid in the rotating cylinder can be thrown out from the lower end of the rotating cylinder and the liquid outlet groove through the rotation effect of the liquid, can be located on the inner wall of the mixing cylinder and then slides down, so that a small amount of liquid can be quickly mixed, and the mixing efficiency is improved. Then a brake assembly is started to drive a threaded column to rotate, a lifting disc moves downwards along the outer wall of the threaded column, and the side wall of the lifting disc scrapes off liquid attached to the inner wall of a mixing barrel downwards, so that the problems that residual filling liquid in a pipeline is difficult to quickly move out by an existing filling structure, and the filling efficiency is high are solved. And a small amount of different filling liquids are difficult to quickly mix.

Description

Technical Field

[0001] The utility model belongs to the field of cell sorters, and in particular relates to a sample filling structure of a cell sorter. Background Art

[0002] A cell sorter is a device that uses physical or biological properties to sort cells with high precision. The core function of a cell sorter is to quickly and accurately separate target cells from a mixed cell population, providing high-quality cell samples for subsequent experiments and analysis. Among the many components of a cell sorter, the sample filling structure is the basis for ensuring experimental accuracy and stability.

[0003] At present, the more common sample filling structures mainly include mechanical filling structure, pneumatic filling structure and microfluidic filling structure. The mechanical filling structure uses mechanical devices such as robotic arms or pumps to achieve precise sample filling. The pneumatic filling structure uses air pressure difference to push cell samples into the sorting system. The microfluidic filling structure uses microfluidic technology to achieve precise filling and manipulation of cell samples. However, the existing filling structure is difficult to quickly remove the filling liquid remaining in the pipeline, and it is difficult to quickly mix small amounts of different types of filling liquids, which needs further improvement.

[0004] Therefore, a sample filling structure for a cell sorter is proposed, which can quickly remove the filling liquid remaining in the pipeline and quickly mix a small amount of different filling liquids. Utility Model Content

[0005] In order to overcome the problem that the existing filling structure is difficult to quickly remove the filling liquid remaining in the pipeline and difficult to quickly mix a small amount of different types of filling liquids.

[0006] The technical scheme of the utility model is: a sample filling structure of a cell sorter, comprising a bearing platform; further comprising a sealing component, a liquid injection component, a gas injection component, a lifting component, a liquid scraping component and a brake component; a sealing component is provided at the upper end of the bearing platform, a liquid injection component for liquid injection is provided on the sealing component, a gas injection component is provided at the lower end of the bearing platform, a lifting component is provided at the upper end of the bearing platform, a liquid scraping component for mixing liquid is provided on the lifting component, and a brake component is also provided on the lifting component;

[0007] The scraping assembly includes a mixing cylinder, a mounting cover, a rotating cylinder, a first gear ring, a liquid outlet groove, a threaded column, a lifting disk, a one-way valve and a sliding cylinder; the mounting cover is threadedly mounted on the inner wall of the upper end of the mixing cylinder, the rotating cylinder is fixedly connected to the center of the upper and lower ends of the mounting cover in a through-type manner, the first gear ring is fixedly connected to the upper part of the side wall of the rotating cylinder, the threaded column is rotatably mounted on the lower end of the mounting cover, the lifting disk is threadedly mounted on the outer wall of the threaded column, the side wall of the lifting disk is fitted with the inner wall of the mixing cylinder, the lower part of the side wall of the first gear ring is penetrated with evenly distributed liquid outlet grooves, the sliding cylinder is fixedly connected to the center of the upper and lower ends of the lifting disk in a through-type manner, the inner wall of the sliding cylinder is fitted with the outer wall of the rotating cylinder, and the one-way valve is fixedly connected to the upper and lower ends of the lifting disk in a through-type manner.

[0008] Preferably, when in use, liquid is injected into the rotating cylinder through the liquid injection assembly, and then the brake assembly is turned on to drive the rotating cylinder to rotate. The liquid in the rotating cylinder will be thrown out from the lower end of the rotating cylinder and the liquid outlet groove through its own rotation, and will slide down on the inner wall of the mixing cylinder, which is conducive to the rapid mixing of a small amount of liquid. The brake assembly is then turned on to drive the threaded column to rotate, and the lifting plate will move downward along the outer wall of the threaded column. The side wall of the lifting plate will scrape the liquid attached to the inner wall of the mixing cylinder downward, thereby solving the problem that the existing filling structure is difficult to quickly remove the filling liquid remaining in the pipeline and difficult to quickly mix a small amount of different types of filling liquids.

[0009] Preferably, the sealing assembly includes a first support block, a second support block, a first electric cylinder and a sealing column; the first support block is fixedly connected to the upper end of the support platform, the second support block is fixedly connected to the upper end of the first support block, the upper and lower ends of the second support block are through-fixed with the first electric cylinder, and the lower end of the output shaft of the first electric cylinder is fixedly connected to the sealing column.

[0010] Preferably, the liquid injection assembly includes a liquid injection cylinder, a liquid outlet cylinder and a first solenoid valve; the upper and lower ends of the first support block are fixedly connected with the liquid injection cylinder, the lower end of the liquid injection cylinder is fixedly connected with the liquid outlet cylinder, the first solenoid valve is arranged on the liquid outlet cylinder, the upper inner wall of the liquid injection cylinder is fitted with the side wall of the sealing column, and the lower outer wall of the liquid outlet cylinder is fitted with the inner wall of the rotating cylinder.

[0011] Preferably, the gas injection assembly includes an air pump, an air injection pipe, a second solenoid valve and a syringe; the air pump is fixedly connected to the lower end of the support platform, the air injection pipe is fixedly connected to the side wall of the mixing cylinder in a penetrating manner, the second solenoid valve is fixedly provided on the air injection pipe, the air outlet end of the second solenoid valve is fixedly connected to the syringe, and the air outlet port of the air pump is connected to the air inlet port of the syringe through a pipe.

[0012] Preferably, the lifting assembly includes a support block, a second electric cylinder, a lifting block, a bearing block, a third electric cylinder, a fixed frame, a through hole and a deflection plate; the upper end of the bearing platform is fixedly connected to the support block, the upper end of the support block is fixedly connected to the second electric cylinder, the lower end of the output shaft of the second electric cylinder passes through the support block and is fixedly connected to the lifting block, the side end of the lifting block is fixedly connected to the bearing block, one side of the bearing block is fixedly connected to the third electric cylinder, the output shaft of the third electric cylinder passes through the bearing block and is fixedly connected to the fixed frame, and the upper end of the bearing block is fixedly connected to the lower end of the mixing barrel.

[0013] Preferably, through holes are provided at both upper and lower ends of the supporting block, the inner walls of the through holes are flush with the inner walls of the lower end of the mixing barrel, deflection plates are fixedly connected to both sides of the inner wall of the fixed frame, two limit plates are fixedly connected to the upper end of the supporting platform, and a collecting box is movably provided at the upper end of the supporting platform, and both sides of the collecting box are respectively fitted with the ends of the two limit plates close to each other.

[0014] Preferably, the brake assembly includes a bracket, a motor and a second gear ring; the upper end of the support block is fixedly connected to the bracket, the motor is fixedly connected to the bracket, the lower end outer wall of the output shaft of the motor is fixedly connected to the second gear ring, the second gear ring and the first gear ring are meshed with each other, and the lower end of the output shaft of the motor passes through the mounting cover and is fixedly connected to the upper end of the threaded column.

[0015] Beneficial effects of the utility model:

[0016] 1. Liquid is injected into the rotating cylinder through the liquid injection assembly, and then the brake assembly is turned on to drive the rotating cylinder to rotate. The liquid in the rotating cylinder will be thrown out from the lower end of the rotating cylinder and the liquid outlet groove through its own rotation, and will slide down on the inner wall of the mixing cylinder, which is conducive to the rapid mixing of a small amount of liquid. The brake assembly can also drive the threaded column to rotate, and the lifting plate will move downward along the outer wall of the threaded column. The side wall of the lifting plate will scrape down the liquid attached to the inner wall of the mixing cylinder, thereby solving the problem that the existing filling structure is difficult to quickly remove the filling liquid remaining in the pipeline and difficult to quickly mix a small amount of different filling liquids;

[0017] 2. When it is necessary to drain the liquid on the inner wall of the mixing cylinder, turn on the air pump to inject pressurized gas into the syringe, and turn on the second solenoid valve to allow the pressurized gas to enter the interior of the mixing cylinder. The pressurized gas is located above the lifting plate and will flow downward through the one-way valve, thereby flushing the liquid on the inner wall of the mixing cylinder downward, thereby improving the effect of draining the liquid on the inner wall of the mixing cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 What is shown is a three-dimensional schematic diagram of a sample filling structure of a cell sorter of the utility model;

[0019] Figure 2 What is shown is a three-dimensional structural schematic diagram of a sealing component and a liquid injection component of a sample injection structure of a cell sorter of the utility model;

[0020] Figure 3 What is shown is a three-dimensional structural schematic diagram of a gas injection component of a sample injection structure of a cell sorter of the utility model;

[0021] Figure 4 What is shown is a three-dimensional structural schematic diagram of a lifting component of a sample filling structure of a cell sorter of the utility model;

[0022] Figure 5 What is shown is a three-dimensional cross-sectional structural schematic diagram of a fixing frame of a sample filling structure of a cell sorter of the utility model;

[0023] Figure 6 What is shown is a three-dimensional schematic diagram of the scraping assembly of a sample filling structure of a cell sorter of the utility model;

[0024] Figure 7 What is shown is a three-dimensional structural schematic diagram of a brake component of a sample filling structure of a cell sorter of the utility model.

[0025] The markings in the attached drawings are: 1, carrier platform; 2, sealing assembly; 201, first support block; 202, second support block; 203, first electric cylinder; 204, sealing column; 3, liquid injection assembly; 301, liquid injection cylinder; 302, liquid outlet cylinder; 303, first solenoid valve; 4, gas injection assembly; 401, air pump; 402, gas injection pipe; 403, second solenoid valve; 404, syringe; 5, lifting assembly; 501, support block; 502, second electric cylinder; 503, lifting block ; 504, bearing block; 505, third electric cylinder; 506, fixing frame; 507, through hole; 508, deflection plate; 6, scraper assembly; 601, mixing cylinder; 602, mounting cover; 603, rotating cylinder; 604, first gear ring; 605, liquid outlet groove; 606, threaded column; 607, lifting plate; 608, one-way valve; 609, slide cylinder; 7, brake assembly; 701, bracket; 702, motor; 703, second gear ring; 8, limit plate; 9, collection box. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Example 1: Please refer to Figure 1-Figure 7A cell sorter sample filling structure includes a carrier platform 1; a sealing component 2, a liquid injection component 3, a gas injection component 4, a lifting component 5, a liquid scraping component 6 and a brake component 7; the upper end of the carrier platform 1 is provided with a sealing component 2, the sealing component 2 is provided with a liquid injection component 3 for liquid injection, the lower end of the carrier platform 1 is provided with a gas injection component 4, the upper end of the carrier platform 1 is provided with a lifting component 5, the lifting component 5 is provided with a liquid scraping component 6 for mixing liquid, and the lifting component 5 is also provided with a brake component 7;

[0028] The scraping assembly 6 includes a mixing cylinder 601, a mounting cover 602, a rotating cylinder 603, a first gear ring 604, a liquid outlet groove 605, a threaded column 606, a lifting plate 607, a one-way valve 608 and a sliding cylinder 609; the mounting cover 602 is threadedly mounted on the inner wall of the upper end of the mixing cylinder 601, the rotating cylinder 603 is fixedly connected to the center of the upper and lower ends of the mounting cover 602, the first gear ring 604 is fixedly connected to the upper part of the side wall of the rotating cylinder 603, and the lower end of the mounting cover 602 is fixedly connected to the rotating cylinder 603. A threaded column 606 is dynamically installed, and a lifting plate 607 is threadedly installed on the outer wall of the threaded column 606. The side wall of the lifting plate 607 fits with the inner wall of the mixing cylinder 601. The lower part of the side wall of the first gear ring 604 is penetrated by a uniformly distributed liquid outlet groove 605. A slide cylinder 609 is fixedly connected to the center of the upper and lower ends of the lifting plate 607. The inner wall of the slide cylinder 609 fits with the outer wall of the rotating cylinder 603. A one-way valve 608 is fixedly connected to the upper and lower ends of the lifting plate 607.

[0029] When in use, liquid is injected into the rotating cylinder 603 through the liquid injection component 3, and then the brake component 7 is turned on to drive the rotating cylinder 603 to rotate. The liquid in the rotating cylinder 603 will be thrown out from the lower end of the rotating cylinder 603 and the liquid outlet groove 605 through its own rotation, and will slide down on the inner wall of the mixing cylinder 601, which is conducive to the rapid mixing of a small amount of liquid. Then, the brake component 7 is turned on to drive the threaded column 606 to rotate, and the lifting plate 607 will move downward along the outer wall of the threaded column 606, and the side wall of the lifting plate 607 will scrape the liquid attached to the inner wall of the mixing cylinder 601 downward.

[0030] See also Figure 1 and Figure 2 In the present embodiment, the sealing assembly 2 comprises a first support block 201, a second support block 202, a first electric cylinder 203 and a sealing column 204; the upper end of the supporting platform 1 is fixedly connected to the first support block 201, the upper end of the first support block 201 is fixedly connected to the second support block 202, the upper and lower ends of the second support block 202 are fixedly connected to the first electric cylinder 203 in a through-type manner, and the lower end of the output shaft of the first electric cylinder 203 is fixedly connected to the sealing column 204. When the injection assembly 3 needs to be sealed, the first electric cylinder 203 is opened so that the output shaft of the first electric cylinder 203 drives the sealing column 204 to move downward, so that the injection assembly 3 can be sealed.

[0031] See also Figure 1 and Figure 2 In the present embodiment, the liquid injection assembly 3 comprises a liquid injection cylinder 301, a liquid outlet cylinder 302 and a first solenoid valve 303; the liquid injection cylinder 301 is fixedly connected to the upper and lower ends of the first support block 201 in a through-type manner, the liquid outlet cylinder 302 is fixedly connected to the lower end of the liquid injection cylinder 301, and the first solenoid valve 303 is arranged on the liquid outlet cylinder 302. The inner wall of the upper end of the liquid injection cylinder 301 fits with the side wall of the sealing column 204, and the outer wall of the lower end of the liquid outlet cylinder 302 fits with the inner wall of the rotating cylinder 603. Liquid is injected into the interior of the liquid injection cylinder 301, and then the first solenoid valve 303 is opened to allow the liquid to flow downward through the liquid outlet cylinder 302.

[0032] See also Figure 1 , Figure 4 and Figure 5 In this embodiment, the lifting assembly 5 includes a support block 501, a second electric cylinder 502, a lifting block 503, a bearing block 504, a third electric cylinder 505, a fixing frame 506, a through hole 507 and a deflection plate 508; the upper end of the bearing platform 1 is fixedly connected to the support block 501, the upper end of the support block 501 is fixedly connected to the second electric cylinder 502, the lower end of the output shaft of the second electric cylinder 502 passes through the support block 501 and is fixedly connected to the lifting block 503, the side end of the lifting block 503 is fixedly connected to the bearing block 504, and one side of the bearing block 504 is fixedly connected to the third electric cylinder 505. There are three electric cylinders 505, and the output shaft of the third electric cylinder 505 passes through the supporting block 504 and is fixedly connected to the fixing frame 506. The upper end of the supporting block 504 is fixedly connected to the lower end of the mixing cylinder 601. Since the mixing cylinder 601 is fixed to the upper end of the supporting block 504, when the second electric cylinder 502 is turned on to move the lifting block 503 downward, the supporting block 504 will move downward, which will drive the mixing cylinder 601 to move downward. The rotating cylinder 603 will move downward and move out from the lower end outer wall of the liquid discharge cylinder 302, thereby facilitating maintenance of the liquid discharge cylinder 302.

[0033] See also Figure 1 , Figure 4 and Figure 5 In this embodiment, through holes 507 are formed at the upper and lower ends of the supporting block 504, and the inner wall of the through hole 507 is flush with the inner wall of the lower end of the mixing cylinder 601. Deflection plates 508 are fixedly connected to the two sides of the inner wall of the fixed frame 506. Two limit plates 8 are fixedly connected to the upper end of the supporting platform 1. A collecting box 9 is movably provided at the upper end of the supporting platform 1. The two sides of the collecting box 9 are respectively fitted with the ends of the two limit plates 8 that are close to each other. The liquid in the mixing cylinder 601 will flow downward through the through hole 507, and then the deflection plate 508 can be opened to deflect and sort the liquid. The collecting container is placed inside the collecting box 9 for liquid storage.

[0034] See also Figure 1 and Figure 7In this embodiment, the brake assembly 7 includes a bracket 701, a motor 702 and a second gear ring 703; the upper end of the bearing block 504 is fixedly connected to the bracket 701, and the motor 702 is fixedly connected to the bracket 701. The lower end outer wall of the output shaft of the motor 702 is fixedly connected to the second gear ring 703, and the second gear ring 703 and the first gear ring 604 are meshed with each other. The lower end of the output shaft of the motor 702 passes through the mounting cover 602 and is fixedly connected to the upper end of the threaded column 606. When it is necessary to rotate the rotating cylinder 603 and the threaded column 606, the motor 702 is turned on so that the output shaft of the motor 702 drives the second gear ring 703 to rotate. The meshing of the second gear ring 703 and the first gear ring 604 will drive the rotating cylinder 603 to rotate. At the same time, the output shaft of the motor 702 will also drive the threaded column 606 to rotate, so that the position of the lifting plate 607 can be adjusted.

[0035] Example 2: Please refer to Figure 3 On the basis of Example 1, the present application provides a technical solution: the gas injection component 4 includes an air pump 401, an air injection pipe 402, a second solenoid valve 403 and a syringe 404; the lower end of the carrier 1 is fixedly connected to the air pump 401, the side wall of the mixing cylinder 601 is fixedly connected to the air injection pipe 402, the second solenoid valve 403 is fixedly arranged on the air injection pipe 402, the air outlet end of the second solenoid valve 403 is fixedly connected to the syringe 404, the air outlet port of the air pump 401 is connected to the air inlet port of the syringe 404 through a pipeline, when it is necessary to empty the liquid on the inner wall of the mixing cylinder 601, the air pump 401 is turned on to inject pressurized gas into the syringe 404, the second solenoid valve 403 is turned on to allow the pressurized gas to enter the interior of the mixing cylinder 601, the pressurized gas is located above the lifting plate 607, and will flow downward through the one-way valve 608, so that the gas on the inner wall of the mixing cylinder 601 can be flushed out downward.

[0036] Working principle: First, liquid is injected into the rotating cylinder 603 through the liquid injection cylinder 301. After the liquid injection is completed, the first electric cylinder 203 is turned on so that the output shaft of the first electric cylinder 203 drives the sealing column 204 to move downward to seal the liquid injection component 3;

[0037] Opening the first solenoid valve 303 allows the liquid in the injection cylinder 301 to flow downward through the liquid outlet cylinder 302;

[0038] Then, the motor 702 is turned on so that the output shaft of the motor 702 drives the second gear ring 703 to rotate. The engagement of the second gear ring 703 with the first gear ring 604 drives the rotating cylinder 603 to rotate. At the same time, the output shaft of the motor 702 also drives the threaded column 606 to rotate, so that the position of the lifting plate 607 can be adjusted.

[0039] The liquid in the rotating cylinder 603 will be thrown out from the lower end of the rotating cylinder 603 and the liquid outlet groove 605 by its own rotation, and will slide down on the inner wall of the mixing cylinder 601, which is conducive to the rapid mixing of a small amount of liquid. At the same time, the lifting plate 607 will move downward along the outer wall of the threaded column 606, and the side wall of the lifting plate 607 will scrape the liquid attached to the inner wall of the mixing cylinder 601 downward;

[0040] When the lifting plate 607 is located below the gas injection pipe 402, the air pump 401 is turned on to inject the pressurized gas into the syringe 404, and the second solenoid valve 403 is turned on to allow the pressurized gas to enter the interior of the mixing cylinder 601. The pressurized gas is located above the lifting plate 607 and will flow downward through the one-way valve 608, so that the liquid on the inner wall of the mixing cylinder 601 can be flushed downward;

[0041] In addition, since the mixing cylinder 601 is fixed to the upper end of the bearing block 504, when the second electric cylinder 502 is turned on to move the lifting block 503 downward, the bearing block 504 will move downward, which will drive the mixing cylinder 601 to move downward, and the rotating cylinder 603 will move downward and move out from the lower end outer wall of the liquid discharge cylinder 302, thereby facilitating maintenance of the liquid discharge cylinder 302;

[0042] The liquid in the mixing cylinder 601 will flow downward through the through hole 507, and then the deflection plate 508 can be opened to deflect and sort the liquid. The collection container is placed inside the collection box 9 to collect the liquid for storage.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A sample filling structure for a cell sorter, comprising a carrier platform (1); characterized in that: It also comprises a sealing component (2), a liquid injection component (3), an air injection component (4), a lifting component (5), a liquid scraping component (6) and a braking component (7); the upper end of the carrier platform (1) is provided with a sealing component (2), the sealing component (2) is provided with a liquid injection component (3) for liquid injection, the lower end of the carrier platform (1) is provided with an air injection component (4), the upper end of the carrier platform (1) is provided with a lifting component (5), the lifting component (5) is provided with a liquid scraping component (6) for mixing liquid, and the lifting component (5) is also provided with a braking component (7); The liquid scraping assembly (6) comprises a mixing cylinder (601), a mounting cover (602), a rotating cylinder (603), a first toothed ring (604), a liquid outlet groove (605), a threaded column (606), a lifting plate (607), a one-way valve (608) and a sliding cylinder (609); the mounting cover (602) is threadedly mounted on the inner wall of the upper end of the mixing cylinder (601); the rotating cylinder (603) is fixedly connected to the center of the upper and lower ends of the mounting cover (602); the first toothed ring (604) is fixedly connected to the upper part of the side wall of the rotating cylinder (603); the mounting cover (602) is threadedly mounted on the inner wall of the upper end of the mixing cylinder (601); A threaded column (606) is rotatably mounted on the lower end, a lifting disk (607) is threadedly mounted on the outer wall of the threaded column (606), the side wall of the lifting disk (607) is fitted with the inner wall of the mixing cylinder (601), a uniformly distributed liquid outlet groove (605) is penetrated through the lower part of the side wall of the first gear ring (604), a sliding cylinder (609) is fixedly connected through the center of the upper and lower ends of the lifting disk (607), the inner wall of the sliding cylinder (609) is fitted with the outer wall of the rotating cylinder (603), and a one-way valve (608) is fixedly connected through the upper and lower ends of the lifting disk (607).

2. A cell sorter sample filling structure according to claim 1, characterized in that: The sealing assembly (2) comprises a first support block (201), a second support block (202), a first electric cylinder (203) and a sealing column (204); the upper end of the bearing platform (1) is fixedly connected to the first support block (201), the upper end of the first support block (201) is fixedly connected to the second support block (202), the upper and lower ends of the second support block (202) are fixedly connected to the first electric cylinder (203) in a through-type manner, and the lower end of the output shaft of the first electric cylinder (203) is fixedly connected to the sealing column (204).

3. A cell sorter sample filling structure according to claim 2, characterized in that: The liquid injection assembly (3) comprises a liquid injection cylinder (301), a liquid outlet cylinder (302) and a first electromagnetic valve (303); the liquid injection cylinder (301) is fixedly connected to the upper and lower ends of the first support block (201) in a through-type manner, the liquid outlet cylinder (302) is fixedly connected to the lower end of the liquid injection cylinder (301), the first electromagnetic valve (303) is arranged on the liquid outlet cylinder (302), the upper inner wall of the liquid injection cylinder (301) is in contact with the side wall of the sealing column (204), and the lower outer wall of the liquid outlet cylinder (302) is in contact with the inner wall of the rotating cylinder (603).

4. A sample filling structure for a cell sorter according to claim 1, characterized in that: The gas injection assembly (4) comprises an air pump (401), an air injection pipe (402), a second solenoid valve (403) and a syringe (404); the lower end of the support platform (1) is fixedly connected to the air pump (401), the side wall of the mixing cylinder (601) is fixedly connected to the air injection pipe (402) in a through-type manner, the second solenoid valve (403) is fixedly arranged on the air injection pipe (402), the air outlet end of the second solenoid valve (403) is fixedly connected to the syringe (404), and the air outlet port of the air pump (401) is connected to the air inlet port of the syringe (404) through a pipeline.

5. A sample filling structure for a cell sorter according to claim 1, characterized in that: The lifting assembly (5) comprises a support block (501), a second electric cylinder (502), a lifting block (503), a bearing block (504), a third electric cylinder (505), a fixing frame (506), a through hole (507) and a deflection plate (508); the upper end of the bearing platform (1) is fixedly connected to the support block (501), the upper end of the support block (501) is fixedly connected to the second electric cylinder (502), the lower end of the output shaft of the second electric cylinder (502) passes through the support block (501) and is fixedly connected to the lifting block (503), the side end of the lifting block (503) is fixedly connected to the bearing block (504), one side of the bearing block (504) is fixedly connected to the third electric cylinder (505), the output shaft of the third electric cylinder (505) passes through the bearing block (504) and is fixedly connected to the fixing frame (506), and the upper end of the bearing block (504) is fixedly connected to the lower end of the mixing barrel (601).

6. A cell sorter sample filling structure according to claim 1, characterized in that: Through holes (507) are provided at the upper and lower ends of the support block (504); the inner wall of the through hole (507) is flush with the inner wall of the lower end of the mixing barrel (601); deflection plates (508) are fixedly connected to the inner walls of the fixed frame (506); the upper end of the support platform (1) is fixedly connected to two limit plates (8); the upper end of the support platform (1) is movably provided with a collection box (9); the two sides of the collection box (9) are respectively in contact with the ends of the two limit plates (8) that are close to each other.

7. A cell sorter sample filling structure according to claim 1, characterized in that: The brake assembly (7) comprises a bracket (701), a motor (702) and a second gear ring (703); the upper end of the bearing block (504) is fixedly connected to the bracket (701), the motor (702) is fixedly connected to the bracket (701), the lower end outer wall of the output shaft of the motor (702) is fixedly connected to the second gear ring (703), the second gear ring (703) and the first gear ring (604) are meshed with each other, and the lower end of the output shaft of the motor (702) passes through the mounting cover (602) and is fixedly connected to the upper end of the threaded column (606).

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