Culture dish based on inspection of microbial bacteria

Abstract

The invention discloses a culture dish based on inspection of microbial bacteria in the technical field of bacterial culture dishes, which comprises a box body of the culture dish, breather pipes integrally connected with two sides of the box body respectively, a sealing cover covering the top of the box body, a sealing assembly, a filtering assembly, an adjusting assembly and a mounting assembly, notches embedded with the ventilation pipe are formed in the two sides of the sealing cover correspondingly, the top of the sealing cover is connected with a handle used for taking and placing the sealing cover, the filtering assembly in the ventilation pipe can conduct multiple purification and filtration on air, it is avoided that other impurities are contained in the air, and the installation frame can drive the filtering assembly to be separated from or enter the ventilation pipe. The air inlet amount and the air inlet flow rate of the filtering assembly are controlled through the adjusting assembly, and the situation that the accuracy of culture research in the culture dish is affected due to the fact that air contains impurities is avoided.

Description

Technical Field

[0001] The invention relates to the field of bacterial culture dishes, in particular to a culture dish for testing microbial bacteria. Background Art

[0002] A culture dish is a vessel that can be used for drug sensitivity studies. It consists of a flat, disc-shaped bottom and a lid. The materials of a culture dish are basically divided into two categories, mainly plastic and glass. Glass can be used for plant materials, microbial culture, and adherent culture of animal cells, while plastic may be made of polyethylene. There are disposable and reusable options, which are suitable for laboratory inoculation, streaking, and bacterial isolation operations, and can be used for drug sensitivity studies of plant materials. The inside of the culture dish usually contains culture medium, which can provide the nutrients and conditions required for microbial growth. Researchers often use culture dishes to observe and study the growth, morphology, and characteristics of microorganisms. Culture dishes are widely used in microbiology, biology laboratories, and medicine.

[0003] When conducting research on culture dishes, anaerobic or aerobic microorganisms are usually cultivated and studied, which requires sealing or providing air. However, the current culture dish has a simple structure. First, the air contains a variety of impurities, which cannot be purified and filtered, and it is not convenient to disassemble or replace the filter structure. Second, it is not convenient to regulate the air flow rate according to the required air supply volume, resulting in the air flow rate being too fast or too slow, affecting the stability of the gas supply. Third, the stability of the splicing installation between the culture dish cover and the culture dish is low, which can easily cause the culture dish cover and the culture dish to loosen or detach, easily affecting the accuracy and inventiveness of the culture dish experimental research. Therefore, it is necessary to design a culture dish based on testing microbial bacteria to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a culture dish for testing microorganisms and bacteria to solve the problems raised by the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a culture dish for testing microorganisms and bacteria, comprising a culture dish box body, a sealing cover mounted on the top of the box body with ventilation pipes integrally connected to both sides of the box body, a sealing assembly, a filter assembly, an adjustment assembly, and an installation assembly.

[0006] The sealing cover is provided with notches on both sides for fitting with the vent pipe, and a handle for taking and placing the sealing cover is connected to the top of the sealing cover.

[0007] The sealing assembly includes a groove opened at the bottom of the sealing cover, a sealing member installed inside the groove, a sealing ring connected to the bottom of the sealing cover and close to the edge, and a fixing ring installed inside the box body and close to the top. The fixing ring is fixed to the box body by adhesion, and the sealing ring is embedded in the fixing ring.

[0008] The filter assembly includes a mounting bracket sleeved on the outside of the vent pipe, a plurality of vent holes arranged circumferentially at one end of the mounting bracket, and a filter element mounted on the inside of the mounting bracket. The filter element is movably connected to the mounting bracket, and the mounting bracket is screwed to the vent pipe.

[0009] The adjustment assembly includes a connecting piece installed at one end of the mounting frame and a rotating piece installed outside the connecting piece.

[0010] The mounting assembly comprises a pushing member installed on the outside of the mounting frame and close to the end thereof, and a sliding member installed on the outside of the ventilating pipe.

[0011] Preferably, the sealing member includes a first sealing ring installed on the inner side of the groove, and a second sealing ring is installed on the top of the box body and located on the inner side of the groove. One side of the first sealing ring is connected to multiple evenly arranged sealing parts, and one side of the second sealing ring is provided with multiple evenly arranged sealing grooves, and the sealing part is arranged inclined upward.

[0012] Preferably, the filter element includes a filter element installed on the inner side of the mounting frame for filtering the air, three first filter blocks arranged evenly are installed on the inner side of the filter element, two second filter blocks arranged evenly are installed on the inner side of the filter element, the inner sides of the second filter blocks are filled with activated carbon, and the first filter blocks and the second filter blocks are arranged alternately.

[0013] Preferably, the connecting member includes a fixed block installed on the inner side of the mounting frame, the outer side of the fixed block is connected to the fixing frame, one side of the fixed block is provided with four first through holes arranged in a circumferential manner, the other side of the fixed block is connected to a connecting block, the other side of the filter element is provided with a connecting groove, the connecting block is movably connected to the connecting groove, and the fixing frame is screwed to the mounting frame.

[0014] Preferably, the rotating member includes a fixed column installed on one side of the fixed block and located at the center of the four first through holes, a rotating ring is mounted on the outside of the fixed column, a rotating disk is connected to the outside of the rotating ring, four second through holes arranged circumferentially are opened on one side of the rotating disk, and the fixed ring is rotatably connected to the fixed column.

[0015] Preferably, the pushing member includes a connecting ring installed at the end of the mounting frame and close to the edge, one side of the connecting ring is connected to a pushing disk, and the connecting ring is rotatably connected to the mounting frame and does not separate.

[0016] Preferably, the sliding member includes two mounting rings installed on the outside of the ventilation pipe, a plurality of circumferentially arranged fixing rods are installed between the two mounting rings, a spring is sleeved on the outside of the fixing rod, a connecting disk is connected to the outside of the fixing rod and at one end of the spring, a plurality of circumferentially arranged locking columns are connected to one side of the connecting disk, a plurality of circumferentially arranged locking grooves are opened on the outside of the notch, and the fixing rod passes through the connecting disk and is slidably connected to it.

[0017] Preferably, a movable cavity is opened on the inner side of the rotating disk, a screw is installed on the inner side of the movable cavity, one end of the screw is connected to a locking column, and a plurality of circumferentially arranged locking grooves are opened on the other side of the fixed frame. The screw is located on the inner side of the movable cavity and is threadedly connected to the rotating disk.

[0018] Preferably, a first sealing strip is connected to one side of the rotating disk, and a second sealing strip is connected to the other side of the fixing frame. The first sealing strip is embedded in one side of the fixing frame, and the second sealing strip is embedded in one side of the rotating disk.

[0019] Preferably, a limiting ring is connected to the outer side of the screw near the end, and the limiting ring is movably connected to the movable cavity and does not disengage.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The handle can be used to drive the sealing cover to be snapped on the top of the box body or detached from the box body, and the vent tubes on both sides of the box body are embedded in the inner sides of the notches on both sides of the sealing cover, and the sealing assembly can be used to seal the sealing cover and the box body, and the sealing ring can be embedded in the top of the fixing ring to perform double sealing on the sealing cover and the box body, so as to prevent air from entering the box body through other positions and only allow air to flow through the two vent tubes. The filter assembly in the vent tube can perform multiple purification and filtration on the air to prevent other impurities in the air. The mounting bracket can drive the filter to detach from or enter the vent tube, so that the mounting bracket can drive the filter to detach from the ventilation tube for removal and replacement. The air intake volume and air flow rate of the filter assembly can be controlled by adjusting the assembly to prevent impurities in the air from affecting the accuracy of culture research in the culture dish. The sealing cover can be locked and fixed by the mounting assembly to prevent the sealing cover from loosening or detaching from the box body, which will affect the accuracy and inventiveness of culture and research operations in the culture dish.

[0022] 2. Both the first sealing ring and the second sealing ring are made of rubber. When the sealing cover and the box body are snap-sealed, the first sealing ring in the groove fits with the second sealing ring on the top of the box body, and the second sealing ring enters the groove. Then, the multiple sealing parts on one side of the first sealing ring can be embedded in the multiple sealing grooves on one side of the second sealing ring to increase the contact area between the first sealing ring and the second sealing ring, thereby improving the sealing performance of the spliced installation of the sealing cover and the box body.

[0023] 3. The filter element and the mounting frame are movably connected, and the gas passes through the filter element in the mounting frame for purification and filtration. The first filter block is made of HEPA material. Multiple first filter blocks can perform multiple purification and filtration on the air. At the same time, the activated carbon in the second filter block can perform multiple adsorption and purification on the air, thereby improving the air purification effect and preventing toxic and harmful gases or other impurities in the air from affecting the accuracy of culture or research operations in the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a left-side cutaway perspective view of the overall structure of the present invention;

[0026] Figure 3 The overall structure of the present invention Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 The overall structure of the present invention Figure 3 Enlarged view of point B in the middle;

[0028] Figure 5 The overall structure of the present invention Figure 3 Enlarged view of point C in the middle;

[0029] Figure 6 The overall structure of the present invention Figure 3 Enlarged view of point D in the middle;

[0030] Figure 7 It is a schematic structural diagram of the box body, vent pipe, sealing cover, notch, handle and locking groove in the overall structure of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the mounting frame, filter element and connecting groove in the overall structure of the present invention;

[0032] Figure 9 It is a schematic structural diagram of the mounting frame, connecting member and rotating member in the overall structure of the present invention;

[0033] Figure 10 In the overall structure of the present invention Figure 9 Center left cutaway stereogram.

[0034] In the figure: 1, box body; 2, vent pipe; 3, sealing cover; 8, notch; 9, handle;

[0035] 4. Sealing assembly; 31. Groove; 41. Sealing member; 42. Sealing ring; 43. Retaining ring; 411. First sealing ring; 412. Second sealing ring; 4111. Sealing portion; 4121. Sealing groove;

[0036] 5. Filter assembly; 51. Mounting frame; 52. Air vent; 53. Filter element; 531. Filter element; 532. First filter block; 533. Second filter block;

[0037] 6. Adjustment assembly; 61. Connecting member; 611. Fixed block; 612. Fixed bracket; 613. First through hole; 614. Connecting block; 615. Connecting groove; 62. Rotating member; 621. Fixed column; 622. Rotating ring; 623. Rotating disk; 6230. Second through hole;

[0038] 7. Mounting assembly; 71. Pushing member; 711. Connecting ring; 712. Pushing plate; 72. Sliding member; 721. Mounting ring; 722. Fixing rod; 723. Spring; 724. Connecting plate; 725. Locking post; 801. Locking slot;

[0039] 6121, locking groove; 6122, second sealing strip; 6231, movable cavity; 6232, screw; 6233, locking column; 6234, first sealing strip; 6235, limiting ring. DETAILED DESCRIPTION

[0040] 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.

[0041] Example 1

[0042] Please refer to Figure 1-10As shown, the present invention provides a towing device for a culture dish semi-trailer for testing microorganisms and bacteria, comprising a box body 1 for a culture dish, vent pipes 2 integrally connected to both sides of the box body 1, a sealing cover 3 mounted on the top of the box body 1, a sealing assembly 4, a filtering assembly 5, an adjusting assembly 6 and a mounting assembly 7. Notches 8 engaging with the vent pipe 2 are respectively provided on both sides of the sealing cover 3, a handle 9 for taking and placing the sealing cover 3 is connected to the top of the sealing cover 3, the sealing assembly 4 comprises a groove 31 provided at the bottom of the sealing cover 3, a sealing member 41 mounted inside the groove 31, a sealing ring 42 connected to the bottom of the sealing cover 3 and near the edge, and a fixed member 42 mounted inside the box body 1 and near the top. The fixed ring 43 and the fixing ring 43 are fixed to the box body 1 by adhesion, and the sealing ring 42 is engaged with the fixing ring 43. The filter assembly 5 includes a mounting frame 51 mounted on the outside of the vent pipe 2, a plurality of air holes 52 arranged circumferentially at one end of the mounting frame 51, and a filter element 53 installed on the inner side of the mounting frame 51. The filter element 53 is movably connected to the mounting frame 51, and the mounting frame 51 is screwed to the vent pipe 2. The adjustment assembly 6 includes a connecting member 61 installed at one end of the mounting frame 51 and a rotating member 62 installed on the outside of the connecting member 61. The mounting assembly 7 includes a pushing member 71 installed on the outside of the mounting frame 51 and close to the end, and a sliding member 72 installed on the outside of the vent pipe 2.

[0043] During actual use, the handle 9 can be used to drive the sealing cover 3 to snap on the top of the box body 1 or detach from the box body 1, and the vent pipes 2 on both sides of the box body 1 are embedded in the inner sides of the notches 8 on both sides of the sealing cover 3. The sealing assembly 4 can be used to seal the sealing cover 3 and the box body 1, and the sealing ring 42 can be embedded in the top of the fixing ring 43 to perform a double seal on the sealing cover 3 and the box body 1, preventing air from entering the box body 1 through other positions and allowing air to flow only through the two vent pipes 2.

[0044] In addition, the filter assembly 5 in the ventilation pipe 2 can perform multiple purification and filtration on the air to prevent other impurities from being contained in the air. The mounting bracket 51 can drive the filter element 53 to detach from or enter the ventilation pipe 2, so that the mounting bracket 51 can drive the filter element 53 to detach from the ventilation pipe for disassembly and replacement. The air intake volume and air flow rate of the filter assembly 5 can be controlled by adjusting the assembly 6 to prevent impurities in the air from affecting the accuracy of culture research in the culture dish. The sealing cover 3 can be locked and fixed by using the mounting assembly 7 to prevent the sealing cover 3 from loosening or detaching from the box body 1, which will affect the accuracy and inventiveness of the culture and research operations in the culture dish.

[0045] Specifically, the sealing member 41 includes a first sealing ring 411 installed on the inner side of the groove 31, and a second sealing ring 412 is installed on the top of the box body 1 and located on the inner side of the groove 31. One side of the first sealing ring 411 is connected to a plurality of evenly arranged sealing portions 4111, and one side of the second sealing ring 412 is provided with a plurality of evenly arranged sealing grooves 4121. The sealing portion 4111 is arranged tilted upward. When the sealing cover 3 and the box body 1 are snap-sealed, the first sealing ring 411 in the groove 31 fits with the second sealing ring 412 on the top of the box body 1, and at the same time, the second sealing ring 412 enters the groove 31. Then, the plurality of sealing portions 4111 on one side of the first sealing ring 411 can be embedded in the plurality of sealing grooves 4121 on one side of the second sealing ring 412 to increase the contact area between the first sealing ring 411 and the second sealing ring 412, thereby improving the seal of the spliced installation of the sealing cover 3 and the box body 1.

[0046] See also Figure 3 or Figure 9 The filter element 53 includes a filter element 531 installed on the inner side of the mounting frame 51 for filtering the air. Three first filter blocks 532 are evenly arranged on the inner side of the filter element 531. Two second filter blocks 533 are evenly arranged on the inner side of the filter element 531. The inner side of the second filter block 533 is filled with activated carbon. The first filter blocks 532 and the second filter blocks 533 are alternately arranged.

[0047] Among them, the filter element 531 is movably connected to the mounting frame 51, and the gas passes through the filter element 531 in the mounting frame 51 for purification and filtration. The first filter block 532 is made of HEPA material. Multiple first filter blocks 532 can perform multiple purification and filtration on the air. At the same time, the activated carbon in the second filter block 533 can perform multiple adsorption and purification on the air, thereby improving the air purification effect and preventing toxic and harmful gases or other impurities in the air from affecting the accuracy of culture or research operations in the box body 1.

[0048] See also Figures 3 to 5In one embodiment, specifically, the connecting member 61 includes a fixed block 611 installed on the inner side of the mounting frame 51, the outer side of the fixed block 611 is connected to a fixed frame 612, one side of the fixed block 611 is provided with four first through holes 613 arranged in a circumferential manner, the other side of the fixed block 611 is connected to a connecting block 614, and the other side of the filter element 531 is provided with a connecting groove 615, the rotating member 62 includes a fixed column 621 installed on one side of the fixed block 611 and located at the center of the four first through holes 613, the outer side of the fixed column 621 is provided with a rotating ring 622, the outer side of the rotating ring 622 is connected to a rotating disk 623, one side of the rotating disk 623 is provided with four second through holes 6230 arranged in a circumferential manner, the inner side of the rotating disk 623 is provided with a movable cavity 6231, and the inner side of the movable cavity 6231 is provided with a screw 623 2. A locking column 6233 is connected to one end of the screw 6232, and a plurality of circumferentially arranged locking grooves 6121 are opened on the other side of the fixing frame 612. A first sealing strip 6234 is connected to one side of the rotating disk 623, and a second sealing strip 6122 is connected to the other side of the fixing frame 612. The first sealing strip 6234 is embedded in one side of the fixing frame 612, and the second sealing strip 6122 is embedded in one side of the rotating disk 623. A limit ring 6235 is connected to the outer side of the screw 6232 and near the end. The limit ring 6235 is movably connected to the movable cavity 6231 and does not disengage. The screw 6232 is located inside the movable cavity 6231 and is threadedly connected to the rotating disk 623. The fixing ring 43 is rotatably connected to the fixing column 621. The connecting block 614 is movably connected to the connecting groove 615. The fixing frame 612 is threadedly installed on the mounting frame 51.

[0049] Correspondingly, the fixed block 611 is screwed and fixed to the outside of the mounting frame 51 through the outer fixing frame 612, and the connecting block 614 on one side of the fixed block 611 is connected and installed with the filter element 531 through the connecting groove 615, so that the fixed block 611 drives the filter element 531 to detach from or enter the mounting frame 51 through the connecting block 614. The rotating disk 623 rotates on the outside of the fixed block 611, and the connecting area of the second through hole 6230 on one side of the rotating disk 623 and the first through hole 613 in the fixed block 611 is used to adjust the flow rate and flow of the air, so as to adjust the amount and rate of gas supplied to the box body 1 stably and continuously.

[0050] It should also be added that the screw 6232 can be used to drive the locking column 6233 to be inserted into the locking groove 6121 on the outside of the fixing frame 612, and the limiting ring 6235 on the outside of the screw 6232 can slide in the movable cavity 6231 to prevent the screw 6232 from falling off, so that the screw 6232 drives the locking column 6233 to lock and fix the rotating disk 623 through the locking groove 6121. When the first through hole 613 and the second through hole 6230 are completely misaligned, the ventilation pipe 2 can be closed to prevent air from entering the box body 1 through the ventilation pipe 2.

[0051] In addition, the first sealing strip 6234 and the second sealing strip 6122 between the fixed frame 612 and the rotating disk 623 can double-seal the gap between the fixed frame 612 and the rotating disk 623, preventing air from flowing into the ventilation pipe 2 through the gap between the fixed frame 612 and the rotating disk 623, thereby improving the stability and accuracy of adjusting the air intake volume and air intake rate of the ventilation pipe 2, so as to provide the culture dish with an anaerobic environment and an aerobic environment for cultivation and research experiments.

[0052] See also Figure 5 Specifically, the pushing member 71 includes a connecting ring 711 installed at the end of the mounting frame 51 and close to the edge, and a pushing disk 712 is connected to one side of the connecting ring 711. The connecting ring 711 is rotatably connected to the mounting frame 51 and does not disengage. The sliding member 72 includes two mounting rings 721 installed on the outside of the ventilation pipe 2, and a plurality of circumferentially arranged fixing rods 722 are installed between the two mounting rings 721. A spring 723 is sleeved on the outside of the fixing rod 722, and a connecting disk 724 is connected to the outside of the fixing rod 722 and at one end of the spring 723. A plurality of circumferentially arranged locking columns 725 are connected to one side of the connecting disk 724, and a plurality of circumferentially arranged locking grooves 801 are provided on the outside of the notch 8. The fixing rod 722 passes through the connecting disk 724 and is slidably connected thereto.

[0053] When the locking cam 725 is in the unlocking state, the locking cam 726 is in the unlocking state, and the locking cam 727 is in the unlocking state, so that the locking cam 726 is locked and the locking cam 727 is unlocked.

[0054] Working principle: When conducting microbial bacterial culture or research experiments, first place the culture medium and microbial bacterial culture in the box body 1, then cover the sealing cover 3 with the box body 1, then insert the vent pipe 2 into the notch 8, then insert the connecting block 614 on one side of the fixing block 611 into the connecting groove 615 at one end of the filter element 531, then place the filter element 531 in the mounting frame 51, then screw the fixing frame 612 on the outside of the fixing block 611 to the mounting frame 51 for installation and fixation, then screw the mounting frame 51 to the vent pipe 2, and at the same time, the mounting frame 51 drives the pushing disk 712 to move through the connecting ring 711, and then the pushing disk 712 pushes the connecting disk 724, at this time, one side of the connecting disk 724 The multiple locking columns 725 are inserted into the locking grooves 801 to lock and fix the sealing cover 3, and at the same time, the mounting frame 51 is brought into the ventilation duct with the filter element 531, and then the rotating disk 623 is rotated on the outside of the fixed block 611 to adjust the air intake volume. At this time, the second through hole 6230 on one side of the rotating disk 623 and the first through hole 613 in the fixed block 611 are misaligned to adjust the air intake volume. Then, the screw 6232 drives the locking column 6233 to be inserted into the locking groove 6121 on the outside of the fixed frame 612, and at the same time, the limiting ring 6235 on the outside of the screw 6232 slides in the movable cavity 6231, and then the screw 6232 drives the locking column 6233 to lock and fix the rotating disk 623 through the locking groove 6121.

[0055] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0056] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A culture dish for testing microorganisms and bacteria, characterized by: The invention comprises a box body (1) of a culture dish, a ventilation tube (2) integrally connected to both sides of the box body (1), a sealing cover (3) mounted on the top of the box body (1), a sealing component (4), a filtering component (5), an adjusting component (6), and a mounting component (7). Notches (8) for engaging with the vent pipe (2) are respectively provided on both sides of the sealing cover (3), and a handle (9) for taking and placing the sealing cover (3) is connected to the top of the sealing cover (3). The sealing assembly (4) comprises a groove (31) provided at the bottom of the sealing cover (3), a sealing member (41) installed inside the groove (31), a sealing ring (42) connected to the bottom of the sealing cover (3) and close to the edge thereof, and a fixing ring (43) installed inside the box body (1) and close to the top thereof, wherein the fixing ring (43) is fixed to the box body (1) by adhesion, and the sealing ring (42) is engaged with the fixing ring (43). The filter assembly (5) comprises a mounting frame (51) mounted on the outside of the vent pipe (2), a plurality of vent holes (52) arranged circumferentially at one end of the mounting frame (51), and a filter element (53) mounted on the inside of the mounting frame (51), wherein the filter element (53) is movably connected to the mounting frame (51), and the mounting frame (51) is screwed to the vent pipe (2). The adjustment assembly (6) includes a connecting member (61) installed at one end of the mounting frame (51) and a rotating member (62) installed outside the connecting member (61). The mounting assembly (7) comprises a pusher (71) mounted on the outside of the mounting frame (51) and close to the end thereof, and a sliding member (72) mounted on the outside of the vent pipe (2).

2. A culture dish for testing microorganisms and bacteria according to claim 1, characterized in that: The sealing member (41) comprises a first sealing ring (411) installed on the inner side of the groove (31); a second sealing ring (412) is installed on the top of the box body (1) and located on the inner side of the groove (31); one side of the first sealing ring (411) is connected to a plurality of evenly arranged sealing portions (4111); one side of the second sealing ring (412) is provided with a plurality of evenly arranged sealing grooves (4121); and the sealing portion (4111) is arranged tilted upward.

3. A culture dish for testing microorganisms and bacteria according to claim 2, characterized in that: The filter element (53) comprises a filter element (531) mounted on the inner side of a mounting frame (51) for filtering air, three first filter blocks (532) arranged evenly are mounted on the inner side of the filter element (531), two second filter blocks (533) arranged evenly are mounted on the inner side of the filter element (531), the inner sides of the second filter blocks (533) are filled with activated carbon, and the first filter blocks (532) and the second filter blocks (533) are arranged alternately.

4. A culture dish for testing microorganisms and bacteria according to claim 3, characterized in that: The connecting member (61) includes a fixing block (611) installed on the inner side of the mounting frame (51), a fixing frame (612) is connected to the outer side of the fixing block (611), four first through holes (613) arranged in a circumferential manner are provided on one side of the fixing block (611), a connecting block (614) is connected to the other side of the fixing block (611), a connecting groove (615) is provided on the other side of the filter element (531), the connecting block (614) is movably connected to the connecting groove (615), and the fixing frame (612) is screwed to the mounting frame (51).

5. A culture dish for testing microorganisms and bacteria according to claim 4, characterized in that: The rotating member (62) includes a fixed column (621) installed on one side of the fixed block (611) and located at the center of the four first through holes (613). A rotating ring (622) is sleeved on the outer side of the fixed column (621). The outer side of the rotating ring (622) is connected to a rotating disk (623). Four second through holes (6230) arranged in a circumference are opened on one side of the rotating disk (623). The fixed ring (43) is rotatably connected to the fixed column (621).

6. A culture dish for testing microorganisms and bacteria according to claim 2, characterized in that: The pushing member (71) comprises a connecting ring (711) mounted on the end of the mounting frame (51) and close to the edge, one side of the connecting ring (711) is connected to a pushing disk (712), and the connecting ring (711) is rotatably connected to the mounting frame (51) and does not separate.

7. A culture dish for testing microorganisms and bacteria according to claim 6, characterized in that: The sliding member (72) comprises two mounting rings (721) mounted on the outside of the vent pipe (2), a plurality of circumferentially arranged fixing rods (722) are mounted between the two mounting rings (721), a spring (723) is sleeved on the outside of the fixing rod (722), a connecting disk (724) is connected to the outside of the fixing rod (722) and located at one end of the spring (723), a plurality of circumferentially arranged locking columns (725) are connected to one side of the connecting disk (724), a plurality of circumferentially arranged locking grooves (801) are opened on the outside of the notch (8), and the fixing rod (722) passes through the connecting disk (724) and is slidably connected thereto.

8. The culture dish for testing microorganisms and bacteria according to claim 5, characterized in that: A movable cavity (6231) is provided on the inner side of the rotating disk (623), a screw (6232) is installed on the inner side of the movable cavity (6231), one end of the screw (6232) is connected to a locking column (6233), and a plurality of circumferentially arranged locking grooves (6121) are provided on the other side of the fixing frame (612), the screw (6232) is located on the inner side of the movable cavity (6231) and is screwed to the rotating disk (623).

9. The culture dish for testing microorganisms and bacteria according to claim 5, characterized in that: One side of the rotating disk (623) is connected to a first sealing strip (6234), and the other side of the fixed frame (612) is connected to a second sealing strip (6122). The first sealing strip (6234) is embedded in one side of the fixed frame (612), and the second sealing strip (6122) is embedded in one side of the rotating disk (623).

10. The culture dish for testing microorganisms and bacteria according to claim 8, characterized in that: A limiting ring (6235) is connected to the outside of the screw rod (6232) and close to the end thereof. The limiting ring (6235) is movably connected to the movable cavity (6231) and does not separate.

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