Microorganism detection and analysis device

Abstract

The invention provides a microbiological detection and analysis device, and relates to the field of microbiological detection and analysis, the microbiological detection and analysis device comprises a container assembly, the container assembly comprises a medicament storage seat and a piston mechanism, a quantity control assembly can be linked with the piston mechanism to realize the operation of injecting liquid into a culture dish, under the control of the quantity control assembly, the liquid injection quantity of the piston mechanism each time is fixed, and the liquid injection quantity of the piston mechanism is fixed; a large number of same samples can be rapidly prepared for analysis and detection, the accuracy of microbiological detection and analysis results is greatly improved, meanwhile, the single-time liquid injection amount of the piston mechanism can be adjusted and controlled, the device can adapt to sample preparation and other operations during different microbiological analysis and detection, and the operation is simple and convenient. The problems that when multiple groups of samples are prepared in existing microbiological analysis and detection, corresponding liquid medicine needs to be manually injected into a culture dish through a liquid injector, the liquid injector has no quantitative liquid injection function, the amount of the liquid medicine in the culture dish is different, the result of microbiological detection and analysis is easily interfered, and the accuracy is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of microbial detection and analysis, and in particular to a microbial detection and analysis device. Background Art

[0002] Microbial testing is the process of qualitatively and quantitatively analyzing the microorganisms in a sample using a variety of methods. In actual testing and analysis, in order to ensure the accuracy and reliability of the results and eliminate experimental errors and interference from accidental factors, a parallel experimental design is usually adopted to prepare multiple groups of samples for simultaneous testing and analysis.

[0003] In the current field of microbial analysis and testing, the preparation process of multiple groups of samples usually relies on manually operated syringes to inject drug solutions into culture dishes. Most existing syringes lack quantitative injection functions, and the injection volume mainly depends on the operator's experience and manual control. Due to factors such as differences in techniques among different operators, operator fatigue, and errors in naked eye observation, it is very easy to cause significant deviations in the amount of drug solution in each culture dish. This inconsistency in the amount of drug solution during the sample preparation process will interfere with the growth environment and metabolic process of microorganisms, thereby adversely affecting the subsequent detection and analysis results, reducing the accuracy and reliability of the test results, and making them less practical. Summary of the Invention

[0004] The present invention relates to a microorganism detection and analysis device, which comprises a container component and a quantity control component, wherein the interior of a medicine reservoir can store liquid medicine required for culturing, analyzing and detecting microorganisms, avoiding the need to frequently draw liquid medicine for standby use during use, and the quantity control component can be linked with a piston mechanism to realize the operation of injecting liquid into the interior of a culture dish. Under the control of the quantity control component, the amount of liquid injected each time by the piston mechanism is fixed, and a large number of identical samples can be quickly prepared for analysis and detection, which greatly improves the accuracy of microorganism detection and analysis results, simplifies the operation process, and improves the efficiency of analysis and detection operations. At the same time, the amount of liquid injected by the piston mechanism at a single time can also be adjusted, which can adapt to operations such as sample preparation during different microorganism analysis and detection, and has high flexibility, adaptability and practicality.

[0005] The present invention provides a microorganism detection and analysis device, which specifically includes: a container component and a quantity control component, wherein the container component includes a medicine storage seat and a piston mechanism; the piston mechanism includes a piston rod, a piston block, a one-way ratchet and a linkage gear, the piston rod is inserted into the top of the medicine storage seat, and the piston block is inserted into the piston cavity of the medicine storage seat, the outer ring of the one-way ratchet is fixedly installed on the top of the piston block, and the inner ring of the one-way ratchet is fixedly installed on the bottom of the piston rod, and the linkage gear is rotatably connected to the inside of the medicine storage seat; the quantity control component includes a pressing seat, The driving seat, trigger block, positioning block, driving gear, driving column and positioning screw, the pressing seat, driving seat and driving column are sequentially inserted into the interior of the medicine storage seat from top to bottom, and the driving seat is inserted into the bottom of the pressing seat, the trigger block is inserted into the interior of the driving seat, and the positioning block is inserted into the interior of the driving seat, the driving gear is rotatably connected to the interior of the medicine storage seat, and the gear teeth of the driving gear and the linkage gear are engaged for transmission, the driving column is inserted into the bottom of the driving seat, the positioning screw is rotatably connected to the interior of the driving column, and the positioning screw is screwed to the bottom of the driving seat through the rod thread.

[0006] Furthermore, a trigger lever is provided at the bottom of the pressing seat, and the trigger lever is located directly above the trigger block. A liquid injection spring is provided at the bottom of the pressing seat, and the two ends of the liquid injection spring are respectively against the bottom of the pressing seat and the top of the driving seat.

[0007] Furthermore, a positioning top spring is provided at the bottom of the trigger block, and two ends of the positioning top spring respectively abut against the inside of the trigger block and the inside of the driving seat.

[0008] Furthermore, an inclined control groove is provided inside the trigger block, and a control rod is provided inside the positioning block, the control rod is inserted into the control groove, a positioning slot is provided inside the medicine storage seat, and the positioning block is inserted into the positioning slot.

[0009] Furthermore, a driving groove is provided on the outside of the driving column, and a driving protrusion is provided on the inside of the driving gear, and the driving protrusion is inserted into the inside of the driving groove.

[0010] Furthermore, the driving groove is composed of a regulating groove arranged along the axial direction of the driving column and a power groove arranged spirally, and the bottom end of the power groove is connected to the top end of the regulating groove.

[0011] Furthermore, a spiral linkage groove is provided on the outside of the piston rod, and a linkage protrusion is provided on the inside of the linkage gear, and the linkage protrusion is inserted into the linkage groove.

[0012] Furthermore, the piston block can only move linearly up and down inside the piston cavity, and a track column with a regular polygonal cross section is provided at the bottom of the driving seat, and the track column is inserted into the interior of the driving column.

[0013] Furthermore, a reset spring is provided at the bottom of the driving column, and two ends of the reset spring respectively abut against the bottom of the driving column and the inside of the medicine storage seat, and the elastic force of the reset spring is smaller than the elastic force of the injection spring.

[0014] The present invention provides a microbial detection and analysis device, which has the following beneficial effects: The interior of the medicine storage seat can store the medicine liquid required for culturing, analyzing and detecting microorganisms, avoiding the need to frequently draw medicine liquid for standby when in use, and the quantity control component can link the piston mechanism to realize the operation of injecting liquid into the culture dish. Under the control of the quantity control component, the amount of liquid injected by the piston mechanism each time is fixed, and a large number of identical samples can be quickly prepared for analysis and detection, which greatly improves the accuracy of the microbial detection and analysis results, simplifies the operation process, and improves the efficiency of analysis and detection operations. At the same time, the amount of liquid injected by the piston mechanism at a time can also be adjusted, which can adapt to operations such as sample preparation during different microbial analysis and detection, thereby improving the flexibility, adaptability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0016] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached figure: Figure 1 Shown is a schematic structural diagram of the present invention.

[0018] Figure 2 The figure shows the internal structure of the quantity control component of the present invention when it is in the reset state.

[0019] Figure 3 The present invention is shown Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0020] Figure 4 The figure shows a structural schematic diagram of the piston mechanism of the present invention after disassembly.

[0021] Figure 5 The figure shows a schematic structural diagram of the disassembled quantity control component of the present invention.

[0022] Figure 6 The present invention shows the pulling Figure 2 Schematic diagram of the internal structure when pressing the seat.

[0023] Figure 7 The present invention is shown Figure 6 Schematic diagram of the enlarged structure of part B in the middle.

[0024] Figure 8The present invention is shown Figure 6 Schematic diagram of the internal structure of the container assembly after completing a single liquid filling operation.

[0025] Figure 9 The present invention is shown Figure 8 Schematic diagram of the enlarged structure of part C in the middle.

[0026] Figure 10 The present invention is shown Figure 8 Schematic diagram of the internal structure of the central control component after reset.

[0027] Figure 11 The present invention is shown Figure 10 Schematic diagram of the enlarged structure of part D in the middle.

[0028] Reference Signs List 1. Medicine storage seat; 101. Piston chamber; 102. Positioning slot; 2. Piston mechanism; 201. Piston rod; 2011. Linkage groove; 202. Piston block; 203. One-way ratchet; 204. Linkage gear; 2041. Linkage protrusion; 3. Volume control assembly; 301. Pressing seat; 3011. Trigger lever; 3012. Liquid injection spring; 302. Driving seat; 3021. Track column; 303. Trigger block; 3031. Positioning spring; 3032. Control slot; 304. Positioning block; 3041. Control lever; 305. Driving gear; 3051. Driving protrusion; 306. Driving column; 3061. Adjusting slot; 3062. Power slot; 3063. Reset spring; 307. Positioning screw. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Please refer to Figures 1 to 11 :Example 1: The present invention proposes a microorganism detection and analysis device, comprising: a container assembly and a quantity control assembly 3, the container assembly includes a medicine storage seat 1 and a piston mechanism 2; the piston mechanism 2 includes a piston rod 201, a piston block 202, a one-way ratchet 203 and a linkage gear 204, the piston rod 201 is inserted into the top of the medicine storage seat 1, and the piston block 202 is inserted into the piston cavity 101 of the medicine storage seat 1, the outer ring of the one-way ratchet 203 is fixedly installed on the top of the piston block 202, and the inner ring of the one-way ratchet 203 is fixedly installed at the bottom of the piston rod 201, and the linkage gear 204 is rotatably connected to the inside of the medicine storage seat 1; the quantity control assembly 3 includes a pressing seat 301, a driving seat 302, a trigger block 303, a positioning block 304, driving gear 305, driving column 306 and positioning screw 307, the pressing seat 301, driving seat 302 and driving column 306 are sequentially inserted into the interior of the medicine storage seat 1 from top to bottom, and the driving seat 302 is inserted into the bottom of the pressing seat 301, the trigger block 303 is inserted into the interior of the driving seat 302, and the positioning block 304 is inserted into the interior of the driving seat 302, the driving gear 305 is rotatably connected to the interior of the medicine storage seat 1, and the gear teeth of the driving gear 305 and the linkage gear 204 are engaged for transmission, the driving column 306 is inserted into the bottom of the driving seat 302, the positioning screw 307 is rotatably connected to the interior of the driving column 306, and the positioning screw 307 is screwed to the bottom of the driving seat 302 through the rod thread.

[0031] Among them, the outside of the piston rod 201 is provided with a spiral linkage groove 2011, and the inside of the linkage gear 204 is provided with a linkage protrusion 2041, which is inserted into the linkage groove 2011. During use, the inside of the piston chamber 101 can extract the medicine liquid for standby use, which can avoid frequent suction of the medicine liquid for standby use, and is convenient to use. When the medicine liquid needs to be reserved for standby use, it is only necessary to lift the piston rod 201. When the piston rod 201 is lifted, it can drive the piston block 202 to move upward synchronously and suck the medicine into the inside of the piston chamber 101. In this process, under the cooperation of the linkage protrusion 2041 and the linkage groove 2011, the piston rod 201 will be accompanied by a reverse action when it is lifted. When the piston rod 201 is reversed, the inner ring of the one-way ratchet 203 can rotate independently without blocking the device, and the piston rod 201 will not be linked to the control component 3 when it is lifted, thereby ensuring the stable suction and standby of the medicine liquid and stable use.

[0032] The bottom of the pressing seat 301 is provided with a trigger lever 3011, and the trigger lever 3011 is located just above the trigger block 303. The bottom of the pressing seat 301 is provided with a liquid injection top spring 3012, and the two ends of the liquid injection top spring 3012 are respectively against the bottom of the pressing seat 301 and the top of the driving seat 302. In use, the liquid injection operation of the container assembly can be realized through the control assembly 3, and the liquid injection amount of the container assembly is the same each time, and the control assembly 3 adopts instantaneous transmission control, which can effectively avoid the liquid injection caused by the pressing seat 30 1. The phenomenon of mis-discharge caused by insufficient pressing occurs. It is stable and efficient to use. During the injection operation, you only need to pull down the pressing seat 301. The bottom of the trigger block 303 is provided with a positioning top spring 3031, and the two ends of the positioning top spring 3031 are respectively against the inside of the trigger block 303 and the inside of the driving seat 302. Because the positioning block 304 is plugged into the inside of the positioning card slot 102 under the action of the positioning top spring 3031, the use position of the driving seat 302 is fixed, so when the pressing seat 301 is pulled down, it can compress the injection. The top spring 3012 stores energy. As the pressing seat 301 moves downward, the trigger lever 3011 will drive the trigger block 303 to move downward and compress the positioning top spring 3031 by contacting and squeezing the trigger block 303. The interior of the trigger block 303 is provided with an inclined control groove 3032, and the interior of the positioning block 304 is provided with a control rod 3041. The control rod 3041 is plugged into the interior of the control groove 3032. The interior of the medicine storage seat 1 is provided with a positioning slot 102, and the positioning block 304 is plugged into the interior of the positioning slot 102. When the trigger block 303 moves downward, the control slot 3032 can drive the positioning block 304 to retract into the interior of the drive seat 302 through the control rod 3041, so that the positioning block 304 disengages from the interior of the positioning slot 102, and the positioning function obtained by the drive seat 302 through the positioning block 304 will also become invalid. Thereafter, under the action of the injection spring 3012, the drive seat 302 can drive the drive column 306 to move downward through the positioning screw 307 and compress the reset spring 3063 to complete the subsequent linkage injection action, which is convenient and flexible to use.

[0033] Among them, the outside of the driving column 306 is provided with a driving groove, and the inside of the driving gear 305 is provided with a driving protrusion 3051, the driving protrusion 3051 is inserted into the inside of the driving groove, and the driving groove is composed of a regulating groove 3061 arranged along the axial direction of the driving column 306 and a power groove 3062 arranged in a spiral. The bottom end of the power groove 3062 is connected to the top end of the regulating groove 3061. In use, when the driving column 306 moves downward, the driving protrusion 3051 will enter the inner part of the power groove 3062 from the regulating groove 3061. When the driving protrusion 3051 moves inside the regulating groove 3061, it does not drive the driving gear 305 to rotate. After the driving protrusion 3051 enters the interior of the power groove 3062, as the driving column 306 moves downward, the driving gear 305 will also rotate. When the driving gear 305 rotates, it can drive the linkage gear 204 to rotate. When the linkage gear 204 rotates, the linkage protrusion 2041 will make the piston rod 201 have a positive rotation trend through the linkage groove 2011. However, due to the presence of the piston rod 201 In the forward direction, the inner and outer rings of the one-way ratchet 203 will engage with each other, so that the piston rod 201 cannot rotate forward. As a result, when the linkage gear 204 rotates, the linkage protrusion 2041 can drive the piston rod 201 to move downward through the linkage groove 2011. When the piston rod 201 moves downward, it can drive the piston block 202 to move downward synchronously, thereby discharging the liquid inside the piston chamber 101. It is easy to use. A reset spring 3063 is provided at the bottom of the driving column 306, and the two ends of the reset spring 3063 are respectively against the driving column The bottom of 306 and the inside of the medicine storage seat 1, and the elastic force of the reset top spring 3063 is smaller than the elastic force of the injection top spring 3012. After a single injection is completed, after releasing the pressing seat 301, under the action of the reset top spring 3063, the control component 3 can be moved up and reset as a whole to prepare for subsequent injection. In the process of moving up and resetting the control component 3, the linkage gear 204 will drive the piston rod 201 to reverse (that is, the inner ring of the one-way ratchet 203 is idling), and will not drive the piston block 202 to move up, so it is stable to use.

[0034] Among them, the piston block 202 can only move up and down in a straight line inside the piston chamber 101, and the bottom of the driving seat 302 is provided with a track column 3021 with a regular polygonal cross-section, and the track column 3021 is inserted into the inside of the driving column 306. In use, since the moving distance of the driving seat 302 is fixed each time the liquid is injected, when the use position of the driving column 306 on the track column 3021 is not changed, the rotation angle of the driving gear 305 is also fixed, so that the downward movement distance of the piston block 202 is also fixed each time the pressing seat 301 is pulled, that is, the amount of liquid injected into the container assembly each time is also the same and fixed. When it is necessary to adjust the amount of liquid injected into the container assembly in a single time, it is only necessary to rotate the positioning screw 307. When the positioning screw 307 is rotated, it can be The dynamic driving column 306 moves outside the track column 3021 to change the use position, so that the use position of the driving protrusion 3051 inside the regulating groove 3061 of the control component 3 when it is in the reset state, that is, the effective range (height) of the driving protrusion 3051 entering the power groove 3062 after the driving seat 302 is completely moved downward is changed, because only after the driving protrusion 3051 enters the power groove 3062 will it drive the driving gear 305 to rotate, and the change of the effective range of the driving protrusion 3051 entering the power groove 3062 will change the rotation angle of the driving gear 305, that is, the downward distance of the piston mechanism 2, thereby realizing the regulation of the amount of single liquid injection, and can adapt to different types of microbial detection and analysis, and has strong adaptability.

[0035] Specific usage and function of this embodiment: In the present invention, the interior of the piston chamber 101 can extract the liquid medicine for standby use, which can avoid frequent suction of liquid medicine for standby use during use, and is easy to use. When the liquid medicine needs to be stored for standby use, it is only necessary to lift the piston rod 201. When the piston rod 201 is lifted up, it can drive the piston block 202 to move up synchronously and suck the liquid medicine into the interior of the piston chamber 101. In this process, under the cooperation of the linkage protrusion 2041 and the linkage groove 2011, the piston rod 201 will be accompanied by a reverse action when it is lifted up. When the piston rod 201 is reversed, the inner ring of the one-way ratchet 203 can rotate independently without blocking the device, and the piston rod 201 will not be linked to the quantity control component 3 when it is lifted up, thereby ensuring the stable suction and standby of the liquid medicine. Component 3 can realize the liquid filling operation of the container component, and the liquid filling amount of the container component is the same each time, and the control component 3 adopts instantaneous transmission control, which can effectively avoid the accidental discharge of liquid due to the failure of the pressing seat 301 to be pressed into place. It is stable and efficient to use. During the liquid filling operation, you only need to pull down the pressing seat 301. Because the positioning block 304 is inserted into the interior of the positioning slot 102 under the action of the positioning top spring 3031, the use position of the drive seat 302 is fixed, so when the pressing seat 301 is pulled down, the liquid filling top spring 3012 can be compressed to store energy. As the pressing seat 301 moves downward, the trigger rod 3011 will drive the trigger block 303 to move downward and compress the positioning top spring 3031 by contacting and squeezing the trigger block 303. The trigger block 303 is When the cam 305 is in the closed position, the cam 3051 is in the closed position, and the cam 3052 is in the closed position, so that the cam 3052 is not in the open position, and the cam 3052 is not in the open position, so that the cam 3052 is not in the open position, so that the cam 3052 is not in the open position, so that the cam 3052 is not in the open position, and the cam 3052 is in the open position, so that the cam 3052 is in the open position, so that the cam 3052 is in the open position, and the cam 3052 is in the open position, so that the cam 3052 is in the open position, After the inner part of the force groove 3062 moves downward with the driving column 306, the driving gear 305 will also rotate accordingly. When the driving gear 305 rotates, it can drive the linkage gear 204 to rotate. When the linkage gear 204 rotates, the linkage protrusion 2041 will make the piston rod 201 have a positive rotation trend through the linkage groove 2011. However, since the inner and outer rings of the one-way ratchet 203 are engaged with each other in the positive rotation direction of the piston rod 201, the piston rod 201 cannot rotate forward. Therefore, when the linkage gear 204 rotates, the linkage protrusion 2041 can drive the piston rod 201 downward through the linkage groove 2011. When the piston rod 201 moves downward, it can drive the piston block 202 to move downward synchronously, thereby discharging the liquid inside the piston chamber 101. It is easy to use. After a single injection is completed,After releasing the pressing seat 301, under the action of the reset top spring 3063, the control assembly 3 can move up and reset as a whole to prepare for subsequent liquid injection. In the process of moving up and resetting the control assembly 3, the linkage gear 204 will drive the piston rod 201 to reverse (that is, the inner ring of the one-way ratchet 203 rotates idly), and will not drive the piston block 202 to move up. Since the movement distance of the driving seat 302 during each injection is fixed, when the use position of the driving column 306 on the track column 3021 is not changed, the rotation angle of the driving gear 305 is also fixed, so that the downward movement distance of the piston block 202 each time the pressing seat 301 is pulled is also fixed, that is, the amount of liquid injected into the container assembly each time is also the same and fixed. When it is necessary to adjust the amount of liquid injected into the container assembly in a single time, it is only necessary to rotate the positioning screw 307. When the positioning screw 307 is turned, When the rod 307 rotates, it can drive the drive column 306 to move outside the track column 3021 through the rod thread to change its operating position. As a result, when the volume control component 3 is in the reset state, the operating position of the drive protrusion 3051 inside the control groove 3061 is changed. This changes the effective range (height) within which the drive protrusion 3051 enters the power groove 3062 after the drive seat 302 is fully moved downward. This is because the drive gear 305 will not be driven to rotate until the drive protrusion 3051 enters the power groove 3062. The change in the effective range within which the drive protrusion 3051 enters the power groove 3062 changes the rotation angle of the drive gear 305, that is, the downward movement distance of the piston mechanism 2. This achieves the regulation of the single injection volume and is suitable for different types of microbial detection and analysis.

Claims

1. A microbial detection and analysis device, characterized in that: include: A container assembly and a quantity control assembly (3), wherein the container assembly comprises a medicine storage seat (1) and a piston mechanism (2); the piston mechanism (2) comprises a piston rod (201), a piston block (202), a one-way ratchet (203) and a linkage gear (204); the piston rod (201) is inserted into the top of the medicine storage seat (1), and the piston block (202) is inserted into the piston cavity (101) of the medicine storage seat (1); the outer ring of the one-way ratchet (203) is fixedly mounted on the top of the piston block (202), and the inner ring of the one-way ratchet (203) is fixedly mounted on the bottom of the piston rod (201); and the linkage gear (204) is rotatably connected to the inside of the medicine storage seat (1); the quantity control assembly (3) comprises a pressing seat (301), a driving seat (302), a trigger block (303), a positioning block (304), a driving gear (204), and a plurality of other components. The wheel (305), the driving column (306) and the positioning screw (307), the pressing seat (301), the driving seat (302) and the driving column (306) are sequentially inserted into the interior of the medicine storage seat (1) from top to bottom, and the driving seat (302) is inserted into the bottom of the pressing seat (301), the trigger block (303) is inserted into the interior of the driving seat (302), and the positioning block (304) is inserted into the interior of the driving seat (302), the driving gear (305) is rotatably connected to the interior of the medicine storage seat (1), and the gear teeth of the driving gear (305) and the linkage gear (204) are engaged for transmission, the driving column (306) is inserted into the bottom of the driving seat (302), the positioning screw (307) is rotatably connected to the interior of the driving column (306), and the positioning screw (307) is screwed to the bottom of the driving seat (302) through the rod body thread.

2. A microorganism detection and analysis device according to claim 1, characterized in that: A trigger push rod (3011) is provided at the bottom of the pressing seat (301), and the trigger push rod (3011) is located directly above the trigger block (303). A liquid injection spring (3012) is provided at the bottom of the pressing seat (301), and two ends of the liquid injection spring (3012) respectively abut against the bottom of the pressing seat (301) and the top of the driving seat (302).

3. A microorganism detection and analysis device according to claim 2, characterized in that: A positioning top spring (3031) is provided at the bottom of the trigger block (303), and two ends of the positioning top spring (3031) respectively abut against the inside of the trigger block (303) and the inside of the driving seat (302).

4. A microorganism detection and analysis device according to claim 3, characterized in that: An inclined control slot (3032) is provided inside the trigger block (303), and a control rod (3041) is provided inside the positioning block (304), the control rod (3041) is plugged into the inside of the control slot (3032), a positioning slot (102) is provided inside the medicine storage seat (1), and the positioning block (304) is plugged into the inside of the positioning slot (102).

5. A microorganism detection and analysis device according to claim 4, characterized in that: A driving groove is provided on the outside of the driving column (306), and a driving protrusion (3051) is provided on the inside of the driving gear (305), and the driving protrusion (3051) is inserted into the inside of the driving groove.

6. A microorganism detection and analysis device according to claim 5, characterized in that: The driving groove is composed of a regulating groove (3061) arranged along the axial direction of the driving column (306) and a power groove (3062) arranged in a spiral manner, and the bottom end of the power groove (3062) is connected to the top end of the regulating groove (3061).

7. A microorganism detection and analysis device according to claim 6, characterized in that: The piston rod (201) is provided with a spiral linkage groove (2011) on the outside, and the linkage gear (204) is provided with a linkage protrusion (2041) on the inside. The linkage protrusion (2041) is inserted into the linkage groove (2011).

8. A microorganism detection and analysis device according to claim 7, characterized in that: The piston block (202) can only move linearly up and down inside the piston cavity (101), and a track column (3021) with a regular polygonal cross section is provided at the bottom of the driving seat (302), and the track column (3021) is inserted into the interior of the driving column (306).

9. A microorganism detection and analysis device according to claim 8, characterized in that: A return spring (3063) is provided at the bottom of the driving column (306), and two ends of the return spring (3063) respectively abut against the bottom of the driving column (306) and the inside of the medicine storage seat (1), and the elastic force of the return spring (3063) is smaller than the elastic force of the injection spring (3012).

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