Sampler for microbiological examination

Abstract

The invention discloses a sampler for microbiological examination, and belongs to the technical field of samplers, the sampler comprises a supporting mechanism, a vehicle body, a cleaning mechanism, an air injection mechanism and a sampling mechanism, the vehicle body comprises a coaming, the supporting mechanism is rotatably mounted on the lower side of the coaming, the cleaning mechanism comprises moving wheels, a motor and a cleaning assembly, the motor is mounted in the coaming, and the air injection mechanism is mounted in the cleaning assembly. The motor provides a power source for the first mounting shaft, the motor is connected with the cleaning assembly, and the cleaning assembly is mounted in the surrounding plate; the sampling mechanism comprises a rodless air cylinder, a first air cylinder, a first receiving hopper, a fixing frame and a sampling assembly, the rodless air cylinder is rotationally installed on the side face of the surrounding plate, the sampling assembly is installed in the surrounding plate, the first receiving hopper is connected with the sampling assembly, and the fixing frame is slidably installed on the side face of the surrounding plate; according to the soil sampling device disclosed by the invention, cleaning of sundries around soil is realized, so that interference to a sampling result is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of samplers, and in particular discloses a sampler for microbiological testing. Background Art

[0002] Soil microbial testing is one of the important means of studying soil ecosystems. It can provide information about the composition, function and activity of microorganisms in the soil. In order to accurately and efficiently perform soil microbial testing, researchers need to collect representative soil samples. Traditional soil sampling methods have some limitations, such as sample contamination, time consumption, and inconvenient operation.

[0003] The patent with publication number: CN217651213U discloses a sampling device for microbial testing. The technical solution of the patent is: it includes a core component, including a top cover, a sampling device and a protective tube. The top cover includes an upper cover and a lower cover, and a cavity is formed between the upper cover and the lower cover. A through hole is opened at the bottom of the lower cover. The protective tube is sealed and connected to the lower cover so that the cavity is connected to the inner cavity of the protective tube. The driving component includes a shell, a motor and a transmission block; the shell is fixed above the upper cover, and the motor is fixed in the shell. However, the patent cannot realize the sampling of microorganisms in the soil. Therefore, a sampler for microbial testing is invented to address this defect. Summary of the invention

[0004] In response to the above technical problems, the technical solution adopted by the present invention is: a sampler for microbial testing, including a body, a supporting mechanism, a cleaning mechanism, a jet mechanism and a sampling mechanism, the body including a panel, the supporting mechanism is rotatably installed on the lower side of the panel, the cleaning mechanism includes a moving wheel, a motor and a cleaning assembly, the motor is installed inside the panel, the motor provides a power source for the first mounting shaft, the motor is connected to the cleaning assembly, and the cleaning assembly is installed inside the panel.

[0005] The jet mechanism is installed inside the enclosure, and the jet mechanism is connected to the cleaning assembly. The sampling mechanism includes a rodless cylinder, a first cylinder, a first receiving bucket, a fixed frame and a sampling assembly. The rodless cylinder is rotatably installed on the side of the enclosure, the first cylinder is installed on the upper side of the enclosure, the rodless cylinder is connected to the sampling assembly, the sampling assembly is installed inside the enclosure, the first receiving bucket is connected to the sampling assembly, the first receiving bucket is installed inside the enclosure, the fixed frame is slidably installed on the side of the enclosure, and the fixed frame is connected to the first receiving bucket.

[0006] Furthermore, a fixed shaft is fixedly installed on the lower side of the enclosure, a rotating frame is rotatably installed on the outer surface of the fixed shaft, a roller shaft is rotatably installed on the side of the rotating frame, a rotating wheel is fixedly installed on the outer surface of the roller shaft, and the rotating wheel is rotatably installed on the rotating frame.

[0007] Furthermore, the cleaning assembly includes a first mounting shaft, which is rotatably mounted on the side of the enclosure, the first mounting shaft is fixedly connected to the moving wheel, a transmission shaft is fixedly mounted on the side of the first mounting shaft, the transmission shaft is rotatably mounted inside the enclosure, a top plate is fixedly mounted on the enclosure, a motor is fixedly mounted on the top plate, a first sprocket is mounted on the output end of the motor, the first sprocket is connected to the transmission shaft, and a chain drive is realized between the transmission shaft and the motor through the first sprocket.

[0008] Furthermore, a mounting plate is fixedly installed inside the enclosure, a second mounting shaft is rotatably installed on the side of the mounting plate, a cleaning roller is fixedly installed on the second mounting shaft, a second sprocket is installed on the moving wheel, the second sprocket is connected to the transmission shaft, and a chain drive is formed between the second mounting shaft and the transmission shaft through the second sprocket, an intermediate rod is fixedly installed on the mounting plate, a first fixed block is fixedly installed on the intermediate rod, and the first fixed block is fixedly installed on the top plate.

[0009] Furthermore, a mesh plate is installed on the enclosure, and the jet mechanism includes an intermediate chamber, which is installed above the mesh plate, a first partition is fixedly installed on the side of the intermediate chamber, the first partition is fixedly installed on the top plate, a transmission pipe is fixedly installed on the intermediate chamber, a supercharger is fixedly installed on the transmission pipe, and the supercharger is fixedly installed on the top plate.

[0010] Furthermore, the first cylinder is fixedly mounted on the top plate, a gland is fixedly mounted on the telescopic end of the first cylinder, a second partition is fixedly mounted on the lower side of the top plate, and the supercharger is fixedly mounted between the first partition and the second partition.

[0011] Furthermore, the sampling assembly includes a second fixed block, which is fixedly mounted on the side of the enclosure, and the rodless cylinder is rotatably mounted on the second fixed block. A sliding block is rotatably mounted on the slider part of the rodless cylinder. A right-angle groove is provided on the side of the enclosure, and a right-angle shaft is fixedly mounted on the inner wall of the right-angle groove. The sliding block is slidably mounted on the outer surface of the right-angle shaft, and a spring is wound on the outer surface of the right-angle shaft. One end of the spring is fixedly mounted on the outer surface of the right-angle shaft, and the other end of the spring is fixedly mounted on the sliding block. An outer tube is fixedly mounted on the side of the sliding block, and a second cylinder is fixedly mounted on the side of the outer tube. A support rod is fixedly mounted on the telescopic end of the second cylinder, and an inner tube is mounted inside the outer tube. The outer tube and the inner tube are connected by multiple springs. A circular through hole is provided on the side of the inner tube, and the radius of the circular through hole of the inner tube is equal to that of the support rod. In the initial state, the support rod extends into the circular through hole of the inner tube.

[0012] Furthermore, a fixed frame is fixedly installed on the outer surface of the inner tube, a gear is rotatably installed on the fixed frame, a rack is fixedly installed inside the outer tube, the rack is meshed with the gear, a third cylinder is fixedly installed on the inner side of the inner tube, a moving frame is fixedly installed on the telescopic end of the third cylinder, the moving frame is located above the inner tube, a positioning block is fixedly installed on the lower side of the moving frame, the positioning block is slidably installed on the inner tube, a plurality of hinges are fixedly installed on the lower side of the inner tube, a rotating shaft is rotatably installed on each hinge, a flip plate is fixedly installed on the outer surface of each rotating shaft, and in an initial state, the plurality of flip plates close the lower part of the inner tube, and in an initial state, the lower end surface of the positioning block coincides with the lower end surface of the flip plate.

[0013] Furthermore, the first receiving bucket is fixedly installed in the enclosure, a fourth cylinder is fixedly installed on the side of the first receiving bucket, a driving plate is fixedly installed on the telescopic end of the fourth cylinder, the driving plate is slidably installed on the side of the enclosure, and the driving plate is fixedly connected to the second receiving bucket.

[0014] Compared with the prior art, the present invention has the following advantages: (1) the present invention can clean up the debris around the soil, thereby avoiding interference with the sampling results; (2) the present invention can record the sampling of multiple sampling locations, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the supporting mechanism structure of the present invention.

[0017] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0018] Figure 4 It is a schematic diagram of the connection relationship between the second mounting shaft and the mounting plate of the present invention.

[0019] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0020] Figure 6 It is a schematic diagram of the connection relationship between the top plate and the enclosure plate of the present invention.

[0021] Figure 7 for Figure 6 Schematic diagram of the partial enlarged structure at point C in the middle.

[0022] Figure 8 It is a schematic diagram of the structure of the jet mechanism of the present invention.

[0023] Fig. 9 It is a schematic diagram of the connection relationship between the outer tube and the second cylinder of the present invention.

[0024] Fig.10 for Fig. 9 Schematic diagram of the local enlarged structure at point D in the middle.

[0025] Fig.11 It is a schematic diagram of the connection relationship between the inner cylinder and the rack of the present invention.

[0026] Fig.12 for Fig.11 Schematic diagram of the local enlarged structure at point E in the middle.

[0027] Fig.13 It is a schematic diagram of the internal tube structure of the present invention.

[0028] Fig.14 for Fig.13 Schematic diagram of the partially enlarged structure at point F in the middle.

[0029] Fig.15 It is a schematic diagram of the sampling mechanism structure of the present invention.

[0030] Fig.16 for Fig.15 Schematic diagram of the local enlarged structure at G in the middle.

[0031] Figure numerals: 1-support mechanism; 2-vehicle body; 3-cleaning mechanism; 4-jet mechanism; 5-sampling mechanism; 101-rotating frame; 102-rotating wheel; 103-fixed shaft; 104-roller shaft; 201-top plate; 202-enclosing plate; 301-moving wheel; 302-first mounting shaft; 303-cleaning roller; 304-net plate; 305-second mounting shaft; 306-mounting plate; 307-first fixed block; 308-middle rod; 309-motor; 310-motor bracket; 311-first sprocket; 312-second sprocket; 313-transmission shaft; 401-supercharger; 402-first partition; 403-transmission pipe; 404-middle Interval; 501-second fixed block; 502-rodless cylinder; 503-first cylinder; 504-sliding block; 505-right angle groove; 506-right angle shaft; 507-spring; 508-pressure cover; 509-second partition; 510-external tube; 511-second cylinder; 512-first receiving bucket; 513-support rod; 514-inner tube; 515-rack; 516-fixed frame; 517-gear; 518-flip plate; 519-positioning block; 520-hinge; 521-rotating shaft; 522-moving frame; 523-third cylinder; 524-positioning hole; 525-fourth cylinder; 526-second receiving bucket; 527-driving plate. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further explained below in combination with and through specific implementation methods.

[0033] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0034] As attached Figure 1 ~Attached Fig.10 As shown, the vehicle body 2 includes a panel 202, a fixed shaft 103 is fixedly installed on the lower side of the panel 202, a rotating frame 101 is rotatably installed on the outer surface of the fixed shaft 103, a roller shaft 104 is rotatably installed on the side of the rotating frame 101, a rotating wheel 102 is fixedly installed on the outer surface of the roller shaft 104, and the rotating wheel 102 is rotatably installed on the rotating frame 101.

[0035] As attached Figure 2 ~Attached Fig.12 As shown, the cleaning mechanism 3 includes a moving wheel 301, a first mounting shaft 302 and a motor 309, the motor 309 is installed inside the enclosure 202, the motor 309 provides a power source for the first mounting shaft 302, the motor 309 is connected to a cleaning component, and the cleaning component is installed inside the enclosure 202; the first mounting shaft 302 is rotatably installed on the side of the enclosure 202, the first mounting shaft 302 is fixedly connected to the moving wheel 301, a transmission shaft 313 is fixedly installed on the side of the first mounting shaft 302, the transmission shaft 313 is rotatably installed inside the enclosure 202, a top plate 201 is fixedly installed on the enclosure 202, a motor bracket 310 is fixedly installed on the top plate 201, a motor 309 is fixedly installed on the motor bracket 310, and the output end of the motor 309 is installed There is a first sprocket 311, which is connected to the transmission shaft 313, and the transmission shaft 313 and the motor 309 form a chain drive through the first sprocket 311; a mounting plate 306 is also fixedly installed inside the enclosure 202, and a second mounting shaft 305 is rotatably installed on the side of the mounting plate 306, and a cleaning roller 303 is fixedly installed on the second mounting shaft 305, and a second sprocket 312 is installed on the moving wheel 301, and the second sprocket 312 is connected to the transmission shaft 313, and the second mounting shaft 305 and the transmission shaft 313 form a chain drive through the second sprocket 312, and an intermediate rod 308 is fixedly installed on the mounting plate 306, and a first fixed block 307 is fixedly installed on the intermediate rod 308, and the first fixed block 307 is fixedly installed on the top plate 201.

[0036] As attached Figure 3 ~Attached Fig.14As shown, a mesh plate 304 is installed on the enclosure 202, and the jet mechanism 4 includes an intermediate chamber 404, which is installed above the mesh plate 304, a first partition plate 402 is fixedly installed on the side of the intermediate chamber 404, the first partition plate 402 is fixedly installed on the top plate 201, a conveying pipe 403 is fixedly installed on the intermediate chamber 404, a supercharger 401 is fixedly installed on the conveying pipe 403, and the supercharger 401 is fixedly installed on the top plate 201; a first cylinder 503 is fixedly installed on the top plate 201, a pressure cover 508 is fixedly installed on the telescopic end of the first cylinder 503, an electromagnet is installed on the pressure cover 508, a second partition plate 509 is fixedly installed on the lower side of the top plate 201, and the supercharger 401 is fixedly installed between the first partition plate 402 and the second partition plate 509.

[0037] As attached Figure 4 ~Attached Fig.16As shown, the sampling mechanism 5 includes a second fixed block 501, a rodless cylinder 502, a first cylinder 503, a first receiving bucket 512 and a fixed frame 516, the rodless cylinder 502 is rotatably mounted on the side of the enclosure 202, the first cylinder 503 is mounted on the upper side of the enclosure 202, the first receiving bucket 512 is mounted inside the enclosure 202, the fixed frame 516 is slidably mounted on the side of the enclosure 202, the fixed frame 516 is connected to the first receiving bucket 512, the second fixed block 501 is fixedly mounted on the side of the enclosure 202, the rodless cylinder 502 is rotatably mounted on the second fixed block 501, the sliding block 504 is rotatably mounted on the slider portion of the rodless cylinder 502, and a straight The right angle groove 505 has a right angle shaft 506 fixedly mounted on the inner wall of the right angle groove 505, the sliding block 504 is slidably mounted on the outer surface of the right angle shaft 506, the outer surface of the right angle shaft 506 is wound with a spring 507, one end of the spring 507 is fixedly mounted on the outer surface of the right angle shaft 506, and the other end of the spring 507 is fixedly mounted on the sliding block 504, an outer cylinder 510 is fixedly mounted on the side of the sliding block 504, a second cylinder 511 is fixedly mounted on the side of the outer cylinder 510, a support rod 513 is fixedly mounted on the telescopic end of the second cylinder 511, an inner cylinder 514 is mounted inside the outer cylinder 510, the outer cylinder 510 and the inner cylinder 514 are connected by a plurality of springs, and the inner cylinder 514 is provided with a spring on the side. A positioning hole 524 is provided, and the radius of the positioning hole 524 is equal to that of the support rod 513. In the initial state, the support rod 513 extends into the positioning hole 524 of the sampling mechanism 5; a fixing frame 516 is fixedly installed on the outer surface of the inner cylinder 514, and a gear 517 is rotatably installed on the fixing frame 516. A rack 515 is fixedly installed inside the outer cylinder 510, and the rack 515 is meshed with the gear 517. A third cylinder 523 is fixedly installed on the inner side of the inner cylinder 514, and a moving frame 522 is fixedly installed on the telescopic end of the third cylinder 523. The moving frame 522 is located above the inner cylinder 514, and a positioning block 519 is fixedly installed on the lower side of the moving frame 522. The positioning block 519 is slidably installed on the inner cylinder 514. A plurality of hinges 520 are fixedly installed on the lower side of the inner tube 514, and a rotating shaft 521 is rotatably installed on each hinge 520. A flip plate 518 is fixedly installed on the outer surface of each rotating shaft 521. In the initial state, the plurality of flip plates 518 close the lower part of the inner tube 514, and in the initial state, the lower end surface of the positioning block 519 coincides with the lower end surface of the flip plate 518; the first receiving bucket 512 is fixedly installed in the enclosure 202, and a fourth cylinder 525 is fixedly installed on the side of the first receiving bucket 512, and a driving plate 527 is fixedly installed on the telescopic end of the fourth cylinder 525, and the driving plate 527 is slidably installed on the side of the enclosure 202, and the driving plate 527 is fixedly connected to the second receiving bucket 526.

[0038] The working principle of the present invention is as follows.

[0039] (i) The motor 309 is started, and the motor 309 drives the transmission shaft 313 to rotate through the first sprocket 311. The transmission shaft 313 drives the moving wheel 301 to rotate through the first mounting shaft 302, thereby completing the movement of the entire driving device. The transmission shaft 313 drives the cleaning roller 303 to rotate through the second sprocket 312, thereby cleaning the ground. At the same time, the supercharger 401 is started, and the supercharger 401 discharges the high-pressure gas through the mesh plate 304 through the first partition plate 402, thereby cleaning the debris under the top plate 201.

[0040] (ii) Then, the first cylinder 503 and the second cylinder 511 are started simultaneously, the second cylinder 511 drives the support rod 513 to be pulled out from the positioning hole 524, the first cylinder 503 drives the pressure cover 508 to move, the electromagnet on the pressure cover 508 is started, and when the pressure cover 508 contacts the inner tube 514, the inner tube 514 is pressed to move by the flip plate 518, and when the inner tube 514 contacts the soil, the inner tube 514 is continued to be pressed to move by the flip plate 518, so that the soil lifts up the flip plate 518, and the soil is collected in the inner tube 514, and then the inner tube 514 is driven to rise by the pressure cover 508. When it rises to the initial position, the second cylinder 511 is started, and the support rod 513 is driven to move in the opposite direction by the second cylinder 511 to extend the support rod 513 into the positioning hole 524.

[0041] (iii) The rodless cylinder 502 is started, and the sliding block 504 is driven to slide along the right-angle axis 506 through the slider part of the rodless cylinder 502, thereby driving the external cylinder 510 to move. When the external cylinder 510 moves to above the first receiving bucket 512, the third cylinder 523 is started, and the third cylinder 523 drives the positioning block 519 to rise through the moving frame 522. Then, under the action of the gravity of the soil, the flip plate 518 rotates, thereby sending the soil into the first receiving bucket 512. Then the fourth cylinder 525 is started, and the fourth cylinder 525 drives the second receiving bucket 526 to move through the driving plate 527, thereby realizing the soil in the first receiving bucket 512 to be taken through the second receiving bucket 526.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention, and any reference numerals in the claims should not be considered as limiting the claims involved.

Claims

1. A sampler for microbiological testing, comprising a vehicle body (2), characterized in that: The sampler for microbiological testing also includes a supporting mechanism (1), a cleaning mechanism (3), an air jet mechanism (4) and a sampling mechanism (5). The vehicle body (2) includes a panel (202). The supporting mechanism (1) is rotatably mounted on the lower side of the panel (202). The cleaning mechanism (3) includes a moving wheel (301), a motor (309) and a cleaning assembly. The motor (309) is mounted inside the panel (202). The motor (309) provides a power source for the first mounting shaft (302). The motor (309) is connected to the cleaning assembly. The cleaning assembly is mounted inside the panel (202). The jet mechanism (4) is installed inside the enclosure (202), and the jet mechanism (4) is connected to the cleaning component. The sampling mechanism (5) includes a rodless cylinder (502), a first cylinder (503), a first receiving bucket (512), a fixing frame (516) and a sampling component. The rodless cylinder (502) is rotatably installed on the side of the enclosure (202), the first cylinder (503) is installed on the upper side of the enclosure (202), the rodless cylinder (502) is connected to the sampling component, and the sampling component is installed inside the enclosure (202). The first receiving bucket (512) is connected to the sampling component, and the first receiving bucket (512) is installed inside the enclosure (202). The fixing frame (516) is slidably installed on the side of the enclosure (202), and the fixing frame (516) is connected to the first receiving bucket (512).

2. A sampler for microbiological testing according to claim 1, characterized in that: The cleaning assembly comprises a first mounting shaft (302), the first mounting shaft (302) being rotatably mounted on a side of a surrounding plate (202), the first mounting shaft (302) being fixedly connected to a moving wheel (301), a transmission shaft (313) being fixedly mounted on the side of the first mounting shaft (302), the transmission shaft (313) being rotatably mounted inside the surrounding plate (202), a top plate (201) being fixedly mounted on the surrounding plate (202), a motor (309) being fixedly mounted on the top plate (201), a first sprocket (311) being mounted on an output end of the motor (309), the first sprocket (311) being connected to the transmission shaft (313), and a chain drive between the transmission shaft (313) and the motor (309) being realized through the first sprocket (311).

3. A sampler for microbiological testing according to claim 2, characterized in that: A mounting plate (306) is also fixedly mounted inside the enclosure (202); a second mounting shaft (305) is rotatably mounted on the side of the mounting plate (306); a cleaning roller (303) is fixedly mounted on the second mounting shaft (305); a second sprocket (312) is mounted on the moving wheel (301); the second sprocket (312) is connected to the transmission shaft (313); a chain drive is formed between the second mounting shaft (305) and the transmission shaft (313) via the second sprocket (312); an intermediate rod (308) is fixedly mounted on the mounting plate (306); a first fixing block (307) is fixedly mounted on the intermediate rod (308); and the first fixing block (307) is fixedly mounted on the top plate (201).

4. A sampler for microbiological testing according to claim 2, characterized in that: The first cylinder (503) is fixedly mounted on the top plate (201); a gland (508) is fixedly mounted on the telescopic end of the first cylinder (503); a second partition (509) is fixedly mounted on the lower side of the top plate (201); and the supercharger (401) is fixedly mounted between the first partition (402) and the second partition (509).

5. A sampler for microbiological testing according to claim 4, characterized in that: The sampling assembly includes a second fixed block (501), the second fixed block (501) is fixedly mounted on the side of the enclosure (202), the rodless cylinder (502) is rotatably mounted on the second fixed block (501), a sliding block (504) is rotatably mounted on the slider portion of the rodless cylinder (502), a right-angle groove (505) is provided on the side of the enclosure (202), a right-angle shaft (506) is fixedly mounted on the inner wall of the right-angle groove (505), the sliding block (504) is slidably mounted on the outer surface of the right-angle shaft (506), a spring (507) is wound around the outer surface of the right-angle shaft (506), one end of the spring (507) is fixedly mounted on the outer surface of the right-angle shaft (506), and the other end of the spring (507) is fixedly mounted on the sliding block (504).

6. A sampler for microbiological testing according to claim 5, characterized in that: An outer tube (510) is fixedly mounted on the side of the sliding block (504), a second cylinder (511) is fixedly mounted on the side of the outer tube (510), a support rod (513) is fixedly mounted on the telescopic end of the second cylinder (511), an inner tube (514) is mounted inside the outer tube (510), the outer tube (510) and the inner tube (514) are connected via a plurality of springs, a circular through hole is arranged on the side of the inner tube (514), the radius of the circular through hole of the inner tube (514) is equal to that of the support rod (513), and in an initial state, the support rod (513) extends into the circular through hole of the inner tube (514).

7. A sampler for microbiological testing according to claim 6, characterized in that: A fixed frame (516) is fixedly mounted on the outer surface of the inner cylinder (514), and a gear (517) is rotatably mounted on the fixed frame (516). A rack (515) is fixedly mounted inside the outer cylinder (510), and the rack (515) meshes with the gear (517). A third cylinder (523) is fixedly mounted on the inner side of the inner cylinder (514), and a moving frame (522) is fixedly mounted on the telescopic end of the third cylinder (523). The moving frame (522) is located above the inner cylinder (514), and a positioning block (519) is fixedly mounted on the lower side of the moving frame (522). The positioning block (519) is slidably mounted on the inner cylinder (514). A plurality of hinges (520) are fixedly mounted on the lower side of the inner cylinder (514), and a rotating shaft (521) is rotatably mounted on each hinge (520). A flip plate (518) is fixedly mounted on the outer surface of each rotating shaft (521).

8. A sampler for microbiological testing according to claim 7, characterized in that: In the initial state, a plurality of flip plates (518) seal the lower portion of the inner tube (514), and in the initial state, the lower end surface of the positioning block (519) overlaps with the lower end surface of the flip plate (518).

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