A microorganism collector for detecting microorganisms in a gas source

Abstract

The utility model provides a kind of microorganism collector for gas source microbiological detection, it is related to microbiological detection field, and the scheme used is: including petri dish, further including protective shell, the petri dish is arranged in the inside of protective shell, the protective shell includes the cover and shell of dismounting connection, the petri dish is placed in the shell, the cover is provided with air inlet pipe, the air inlet pipe is used to connect the gas source to be measured, the shell is provided with exhaust pipe, and the exhaust pipe is used to connect suction device. The utility model can greatly reduce the pollution of petri dish in the process of collection and transport, improve the accuracy of concentration calculation.

Description

Technical Field

[0001] This utility model relates to the field of microbial detection, and in particular to a microbial collector for gas-source microbial detection. Background Technology

[0002] Compressed gases, such as compressed air, nitrogen, carbon dioxide, and oxygen, are widely used in various manufacturing industries. They are used to provide pressure or protect products. In fields such as medicine, it is necessary to control the microbial content of compressed gases, which requires the detection of microbial concentrations in compressed gases.

[0003] In existing technologies, airborne microorganisms are collected using a planar microbial sampler. The planar microbial sampler mainly consists of a petri dish loading area, an air extraction device, a flow control module, and a timing system. Its working process is as follows: First, the microbial petri dish is placed in the sampling area with the lid open; then, the gas to be tested is extracted at a constant flow rate through the air extraction device, so that the airflow vertically impacts the surface of the culture medium in the petri dish; finally, the petri dish is incubated at a constant temperature, and after the incubation is completed, the concentration of microorganisms in the air is estimated by counting colonies.

[0004] When using the above technical solutions, on the one hand, the internal cavity of the culture dish in the airborne bacteria sampler is easily contaminated by microorganisms. Even if it is cleaned before use, there are still some blind spots that cannot be cleaned, which will still cause the culture dish to be contaminated and affect the accuracy of microbial concentration calculation. On the other hand, during on-site testing, the culture dish needs to be opened and transferred. The culture dish is exposed to the environment and is easily contaminated. The accuracy of microbial detection is greatly affected by the environment. When performing constant temperature incubation, the culture dish needs to be transported. During the transportation process, the culture dish is exposed to the environment and is easily contaminated, which further affects the accuracy of concentration calculation. Utility Model Content

[0005] To address the technical problem in the prior art where the collection of gaseous microorganisms from petri dishes is easily contaminated, affecting the accuracy of concentration calculations, this invention provides a microbial collector for gaseous microbial detection. This collector can significantly reduce contamination of petri dishes during collection and transportation, thereby improving the accuracy of concentration calculations.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a microbial collector for gas source microbial detection, including a petri dish and a protective shell. The petri dish is disposed inside the protective shell. The protective shell includes a cover and a shell that are detachably connected. The petri dish is placed inside the shell. The cover is provided with an air inlet pipe for connecting to the gas source to be tested. The shell is provided with an exhaust pipe for connecting to a suction device.

[0007] This invention provides comprehensive protection for the culture dish during collection and transportation by setting up a protective shell. Compared with existing technologies, it will not be contaminated by microorganisms outside the gas source being tested, thus preventing misjudgment of the test results and improving the accuracy of the test.

[0008] Furthermore, the cover and the housing are threaded together.

[0009] Furthermore, the cover is provided with internal threads, a sealing ring is provided at the root of the thread of the cover, and the housing is provided with external threads.

[0010] Furthermore, the intake pipe is equipped with a one-way valve one, which is open to the inside of the protective shell, and the exhaust pipe is equipped with a one-way valve two, which is open to the outside of the protective shell.

[0011] This invention, by setting one-way valve one and one-way valve two, can prevent non-test gas sources from entering the protective shell, so that the protective shell can only be connected to the external gas source when the gas extraction device is working, thereby improving the protection level, further preventing the petri dish from being contaminated, and improving the accuracy of detection.

[0012] Furthermore, the bottom edge of the culture dish is provided with serrations.

[0013] This invention creates a gap between the bottom of the culture dish and the bottom of the shell by setting serrations, which facilitates the flow of the gas source to be tested.

[0014] Furthermore, a boss is provided on the bottom surface of the housing.

[0015] This invention creates a gap between the bottom of the culture dish and the bottom of the shell by setting a boss, which facilitates the flow of the gas source to be tested.

[0016] Furthermore, the cover is provided with a limiting member, which engages with the culture dish.

[0017] This invention can limit the position of the culture dish by setting a limiting component, preventing it from shaking during turnover.

[0018] Furthermore, at least three limiting members are provided. The limiting members are made of elastic material and include a connecting part and a limiting part. The connecting part is connected to the cover body. The lower end of the connecting part is inclined away from the culture dish. The angle between the limiting part and the connecting part is α, where 150°≤α≤160°. The limiting part can abut against the outer circumferential surface of the culture dish.

[0019] As can be seen from the above technical solutions, this utility model has the following advantages: This invention provides a microbial collector for gas-source microbial detection. By incorporating a protective shell, it achieves comprehensive protection of the culture dish during collection and transport. Compared to existing technologies, it prevents contamination by microorganisms outside the target gas source, thus avoiding misinterpretation of test results and improving detection accuracy. The inclusion of one-way valves prevents non-target gas sources from entering the protective shell, ensuring communication between the protective shell and the external gas source is only possible when the suction device is operating, enhancing the protection level and further preventing contamination of the culture dish, thus improving detection accuracy. The serrated design creates a gap between the bottom of the culture dish and the bottom of the shell, facilitating the flow of the target gas source. The inclusion of a limiting component prevents the culture dish from shaking while ensuring gas passage, preventing damage to the culture medium and ensuring computational accuracy. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an application state diagram of Embodiment 1 of this utility model.

[0022] Figure 2 This is a schematic diagram of the assembly structure of the petri dish and the box in Embodiment 1 of this utility model.

[0023] Figure 3 This is a schematic diagram of the assembly structure of the cover and the limiting component in Embodiment 2 of this utility model.

[0024] In the diagram, 1. Gas source to be tested; 2. One-way valve one; 3. Inlet pipe; 4. Protective shell; 401. Cover; 402. Shell; 403. Sealing ring; 5. Exhaust pipe; 6. One-way valve two; 7. Vacuum device; 8. Petri dish; 11. Serrated edge; 13. Limiting component; 1301. Connecting part; 1302. Limiting part.

[0025] Example To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0026] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a microbial collector for gas source microbial detection, including a petri dish 8 (containing culture medium) and a protective shell 4. The petri dish 8 is placed inside the protective shell 4 under sterile conditions. The protective shell 4 includes a cover 401 and a shell 402 that are detachably connected. The petri dish 8 is placed inside the shell 402. The cover 401 is provided with an air inlet pipe 3, which is used to connect to the gas source to be tested. The shell 402 is provided with an exhaust pipe 5, which is used to connect to an air extraction device 7.

[0027] This embodiment achieves all-round protection of the petri dish 8 during the collection and transportation process by setting a protective shell 4. Compared with the prior art, it will not be contaminated by microorganisms outside the gas source 1, thus preventing misjudgment of the test results and improving the accuracy of the test.

[0028] like Figure 2 As shown, to facilitate the assembly and disassembly of the cover 401, the cover 401 and the housing 402 are threaded together; more specifically, the cover 401 is provided with internal threads and the housing 402 is provided with external threads. To improve sealing and prevent non-test gas from entering, a sealing ring 403 is provided at the root of the thread of the cover 401.

[0029] To prevent non-test gases from entering the interior of the protective housing 4, such as... Figure 1 As shown, the air inlet pipe 3 is equipped with a one-way valve 2, which is open to the inside of the protective shell 4, and the exhaust pipe 5 is equipped with a one-way valve 6, which is open to the outside of the protective shell 4. With this arrangement, the protective shell 4 can only form gas flow with the outside when the air extraction device 7 is working. When the air extraction device 7 is not working, no gas enters and will not cause contamination of the culture dish 8.

[0030] To ensure smooth gas flow, a boss can be provided on the bottom surface of the housing 402. In this embodiment, for example... Figure 2 As shown, the bottom edge of the culture dish 8 is provided with serrations 11, which create a gap between the bottom of the culture dish 8 and the bottom surface of the shell 402 to facilitate gas flow.

[0031] The working process of this microbial collector for gas source microbial detection is as follows: First, in a sterile environment, place the petri dish 8 into the protective shell 4. Then, connect the inlet pipe 3 of this collector to the gas source 1 to be tested, and connect the exhaust pipe 5 to the extraction device 7. Open the extraction device 7, and the gas enters the interior of the protective shell 4 through the one-way valve 2, and then exits through the exhaust pipe 5 into the extraction device 7. After setting the time, close the extraction device 7, disconnect the connection with the gas source and the extraction device 7, and transfer this collector to the microbial culture site. In a sterile environment, open the cover 401, take out the petri dish 8 and place it into the culture device, and sterilize the protective shell 4, one-way valve 2 and one-way valve 6 for reuse.

[0032] Example 2 like Figure 3 As shown, this embodiment provides a microbial collector for gas source microbial detection, which is basically the same in structure as the first embodiment, except that: a limiting member 13 is provided inside the cover 401, and the limiting member 13 is engaged with the culture dish 8.

[0033] In this embodiment, the limiting component 13 can prevent the culture dish 8 from shaking inside the protective shell 4, thus avoiding spillage of the culture medium due to external force during turnover, which would affect the accuracy of concentration calculation.

[0034] Furthermore, such as Figure 3 As shown, at least three limiting members 13 are provided. In this embodiment, three limiting members 13 are provided. The three limiting members 13 are circumferentially distributed on the top surface of the cover 401. The limiting members 13 are made of elastic material. In this embodiment, the limiting members 13 are made of spring steel. The limiting member 13 includes a connecting part 1301 and a limiting part 1302. The connecting part 1301 is connected to the cover 401. The lower end of the connecting part 1301 is inclined away from the culture dish 8. The angle between the limiting part 1302 and the connecting part 1301 is α, where 160°≤α≤175°. The limiting part 1302 can abut against the outer circumferential surface of the culture dish 8.

[0035] As can be seen from the above embodiments, the present invention has the following beneficial effects: 1. By setting up a protective shell 4, the petri dish 8 can be protected in all aspects during the collection and transportation process. Compared with the existing technology, it will not be contaminated by microorganisms outside the gas source 1, which will cause misjudgment of the test results and improve the accuracy of the test. 2. By setting one-way valve 1 2 and one-way valve 2 6, non-test gas source 1 can be prevented from entering the protective shell 4, so that the protective shell 4 can only be connected to the external gas source when the gas extraction device 7 is working, thereby improving the protection level, further preventing the petri dish 8 from being contaminated, and improving the detection accuracy. 3. By setting the serrations 11, a gap is created between the bottom of the petri dish 8 and the bottom of the shell 402, which facilitates the flow of the gas source 1 to be tested; 4. By setting the limiting component 13, the petri dish 8 can be prevented from shaking, thus avoiding damage to the culture medium and affecting the accuracy of calculations.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A microbial collector for gas source microbial detection, comprising a petri dish (8), characterized in that, It also includes a protective shell (4), the petri dish (8) is disposed inside the protective shell (4), the protective shell (4) includes a cover (401) and a shell (402) that are detachably connected, the petri dish (8) is placed inside the shell (402), the cover (401) is provided with an air inlet pipe (3), the air inlet pipe (3) is used to connect to the gas source to be tested, and the shell (402) is provided with an exhaust pipe (5), the exhaust pipe (5) is used to connect to an air extraction device.

2. The microbial collector for gas source microbial detection as described in claim 1, characterized in that, The cover (401) and the housing (402) are threaded together.

3. The microbial collector for gas source microbial detection as described in claim 2, characterized in that, The cover (401) is provided with an internal thread, the housing (402) is provided with an external thread, and a sealing ring (403) is provided at the root of the thread of the cover (401).

4. The microbial collector for gas source microbial detection as described in claim 3, characterized in that, The intake pipe (3) is equipped with a one-way valve (2), which is open to the inside of the protective shell (4). The exhaust pipe (5) is equipped with a one-way valve (6), which is open to the outside of the protective shell (4).

5. The microbial collector for gas source microbial detection as described in any one of claims 1-4, characterized in that, The bottom edge of the culture dish (8) is provided with serrations (11).

6. The microbial collector for gas source microbial detection as described in any one of claims 1-4, characterized in that, A boss is provided on the bottom surface of the housing (402).

7. The microbial collector for gas source microbial detection as described in claim 1, characterized in that, The cover (401) is provided with a limiting member (13), which is engaged with the culture dish (8).

8. The microbial collector for gas source microbial detection as described in claim 7, characterized in that, At least three limiting members (13) are provided. The limiting members (13) are made of elastic material. The limiting members (13) include a connecting part (1301) and a limiting part (1302). The connecting part (1301) is connected to the cover (401). The lower end of the connecting part (1301) is inclined away from the culture dish (8). The angle between the limiting part (1302) and the connecting part (1301) is a, 150°≤a≤160°. The limiting part (1302) can abut against the outer circumferential surface of the culture dish (8).

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