Sampling device for air detection

Abstract

The utility model relates to the technical field of air detection, and discloses a sampling device for air detection, which comprises a sampling device body, the top of the sampling device body is provided with a sampling groove, the top of the sampling groove is clamped with a sampler, the inside of the sampling groove is fixedly connected with a sampling table, the top of the sampling table is provided with a culture dish, and the top of the culture dish is fixedly connected with the sampling table. The top of the culture dish is in sliding connection with a fastening plate, and one side of the fastening plate is fixedly connected with a driving mechanism, so that the problems that the culture dish needs to be replaced after sampling of an existing air microorganism sampler is completed every time, the fixation of the culture dish for more convenient replacement is often relatively simple, for example, the culture dish is directly placed in a cylinder, and the operation is inconvenient are solved. The problems that a culture dish is easily fixed unstably, the position of the culture dish is possibly changed due to air flow or vibration in the sampler, and then microorganism particles which have impacted on the culture dish fall off, so that sample loss is caused, and the sampling accuracy is influenced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air detection, in particular to a sampling device for air detection. Background Art

[0002] Air microbial samplers are widely used in many fields. For example, in the field of environmental monitoring, it can be used to evaluate the microbial contamination in the atmosphere, understand the types and quantities of microorganisms, and provide data support for environmental protection. In the field of medical and health care, it can be used to monitor the microbial contamination in hospital operating rooms, wards and other environments to ensure the health and safety of medical institutions. Air microbial samplers are specifically used to collect microbial samples in the air. Its working principle is based on the impact principle. By simulating the anatomical structure and aerodynamic characteristics of the human respiratory tract, the microbial particles suspended in the air are collected on the surface of the sampling medium according to a graded distribution. This type of equipment usually consists of a multi-stage impactor, a host (including a flow meter and a constant flow sampling pump), a timer and other auxiliary components to ensure a stable flow rate and accurate sampling time during the sampling process.

[0003] The existing air microbial sampler needs to replace the culture dish after each sampling. The fixation of the culture dish is often relatively simple for more convenient replacement. For example, if it is placed directly in the cylinder, it is easy to cause the culture dish to be unstable. Its position may change due to air flow or vibration inside the sampler, which may cause the microbial particles that have hit the culture dish to fall off, resulting in sample loss, which will affect the accuracy of sampling. Utility Model Content

[0004] The utility model provides a sampling device for air detection, which has the beneficial effect of firm fixation, and solves the problem mentioned in the above background technology that the existing air microorganism sampler needs to replace the culture dish after each sampling, and the fixation of the culture dish is often relatively simple for more convenient replacement. For example, if it is placed directly in a cylinder, it is easy to cause the culture dish to be unstable, and its position may change due to air flow or vibration inside the sampler, which may cause the microbial particles that have hit the culture dish to fall off, resulting in sample loss, which will affect the accuracy of sampling.

[0005] The utility model provides the following technical solution: a sampling device for air detection, comprising a sampling device body, a sampling groove is opened on the top of the sampling device body, a sampler is clamped on the top of the sampling groove, a sampling platform is fixedly connected to the inside of the sampling groove, a culture dish is placed on the top of the sampling platform, a fastening plate is slidably connected to the top of the culture dish, and a driving mechanism is fixedly connected to one side of the fastening plate.

[0006] As an optional solution of the sampling device for air detection described in the utility model, the driving mechanism includes a fixed seat, one side of the fixed seat is threadedly connected to a screw rod, the outer side of the screw rod is rotatably connected to a fixed sleeve, and the bottom of the fixed sleeve is fixedly connected to the top of the sampling platform.

[0007] As an optional solution of the sampling device for air detection described in the utility model, one side of the screw is fixedly connected with a gear, one side of the gear is meshingly connected with a toothed plate, and the top of the toothed plate is fixedly connected to the bottom of the sampler.

[0008] As an optional solution of the sampling device for air detection described in the utility model, wherein: the top of the inner side of the sampling slot is fixedly connected to a connecting platform, a card slot is opened on one side of the connecting platform, and a buckle is fixedly connected to the bottom of the sampling platform.

[0009] As an optional solution of the sampling device for air detection of the utility model, wherein: a guide plate is fixedly connected to the inner side of the sampling slot, and the guide plate is slidably connected to the tooth plate.

[0010] As an optional solution of the sampling device for air detection of the utility model, wherein: an expansion plate is fixedly connected to the top of the guide plate, and the expansion plate is arranged in a trapezoidal shape.

[0011] As an optional solution of the sampling device for air detection of the utility model, an extension groove is provided on the top of the sampling platform, and the extension groove is gap-matched with the tooth plate.

[0012] As an optional solution of the sampling device for air detection described in the utility model, wherein: a fixed protrusion is fixedly connected to the top of the sampling platform, a fixed groove is opened at the bottom of the culture dish, and the fixed protrusion and the fixed groove are gap-matched.

[0013] The utility model has the following beneficial effects:

[0014] 1. The sampling device for air detection is provided with a culture dish, a sampler, a fastening plate and a driving mechanism. When the sampler is removed to replace the culture dish, the sampler drives the fastening plate to move to a side away from the culture dish through the driving mechanism. When the sampler is completely removed, the fastening plate leaves the culture dish. At this time, the culture dish can be directly moved upward to replace it. After replacement, the sampler is installed downward on the sampling slot, and the fastening plate is pushed to move to a side close to the culture dish. The culture dish is clamped and fixed by multiple fastening plates, which can fix the culture dish, making it difficult for the culture dish to shift during use, and avoiding contact between the culture dish and other components due to vibration. Such contact will cause cross-contamination of microbial samples, thereby interfering with the accurate judgment of the type and quantity of microorganisms, and improving the detection accuracy of microbial samples in the air.

[0015] 2. The sampling device for air detection is provided with a guide plate. When the sampler drives the tooth plate to move downward, the guide plate will limit the sampler, making the movement of the tooth plate more stable and less likely to shake during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the sampler of the utility model in a disassembled state.

[0018] Figure 3 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0019] Figure 4 This is a schematic diagram of the structure of the sampler of the utility model when viewed from above.

[0020] Figure 5 It is a structural schematic diagram of the fixing protrusion and the fixing groove of the utility model.

[0021] In the figure: 1. sampling device body; 2. sampling slot; 3. sampler; 4. sampling table; 5. culture dish; 6. fastening plate; 701. fixing seat; 702. screw; 703. fixing sleeve; 704. gear; 705. tooth plate; 8. connecting table; 9. slot; 10. buckle; 11. guide plate; 12. expansion plate; 13. extension slot; 14. fixing protrusion; 15. fixing groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figures 1 to 5 A sampling device for air detection includes a sampling device body 1, a sampling slot 2 is provided on the top of the sampling device body 1, a sampler 3 is clamped on the top of the sampling slot 2, a sampling table 4 is fixedly connected inside the sampling slot 2, a culture dish 5 is placed on the top of the sampling table 4, a fastening plate 6 is slidably connected to the top of the culture dish 5, and a driving mechanism is fixedly connected to one side of the fastening plate 6.

[0025] During the operation of the sampling device body 1, the user needs to place the body in the environment where sampling is required, set the appropriate sampling time and flow rate, and then start the sampler. The sampler will inhale air and collect the microbial particles in the culture dish 5 through the impact principle. After the sampling is completed, the user can take out the culture dish 5 containing the microbial sample for subsequent laboratory analysis.

[0026] The driving mechanism includes a fixing seat 701 , one side of the fixing seat 701 is threadedly connected with a screw rod 702 , the outer side of the screw rod 702 is rotatably connected with a fixing sleeve 703 , and the bottom of the fixing sleeve 703 is fixedly connected to the top of the sampling platform 4 .

[0027] A gear 704 is fixedly connected to one side of the screw rod 702 , a toothed plate 705 is meshingly connected to one side of the gear 704 , and the top of the toothed plate 705 is fixedly connected to the bottom of the sampler 3 .

[0028] The working principle of this embodiment is as follows: when replacing the culture dish 5, firstly, the sampler 3 is taken away upwards. While taking away the sampler 3, the sampler 3 drives the tooth plate 705 to move upwards. After the tooth plate 705 moves upwards, it drives the gear 704 to rotate. The gear 704 drives the screw 702 to rotate. After the screw 702 rotates, it drives the fixing seat 701 to move away from the culture dish 5. The fixing seat 701 drives the fastening plate 6 to move away from the culture dish 5. When the sampler 3 is completely removed, the fastening plate 6 leaves the culture dish 5. At this time, the culture dish 5 can be directly moved upwards to be replaced. After replacement, the sampler 3 is installed downward on the sampling slot 2. At this time, the toothed plate 705 drives the gear 704 to rotate in the opposite direction and pushes the fastening plate 6 to move toward the side close to the culture dish 5. The culture dish 5 is clamped and fixed by multiple fastening plates 6, which can fix the culture dish 5, making it difficult for the culture dish 5 to shift during use, and avoiding contact between the culture dish 5 and other components due to vibration. Such contact will cause cross-contamination of microbial samples, thereby interfering with the accurate judgment of the type and quantity of microorganisms, and improving the detection accuracy of microbial samples in the air.

[0029] Embodiment 2

[0030] This embodiment is an improvement made on the basis of the first embodiment. For details, please refer to Figures 1 to 5 The top of the inner side of the sampling slot 2 is fixedly connected with a connecting platform 8, a card slot 9 is opened on one side of the connecting platform 8, and a buckle 10 is fixedly connected to the bottom of the sampling platform 4. The sampler 3 is fixedly connected to the card slot 9 on the connecting platform 8 through the buckle 10.

[0031] By providing the connecting sleeve, the card slot 9 and the buckle 10, the sampler 3 is fixedly connected to the connecting platform 8, so that the installation and disassembly of the sampler 3 are convenient.

[0032] A guide plate 11 is fixedly connected to the inner side of the sampling slot 2 , and the guide plate 11 is slidably connected to the tooth plate 705 .

[0033] By setting the guide plate 11, when the sampler 3 drives the tooth plate 705 to move downward, the guide plate 11 will limit the sampler 3, making the movement of the tooth plate 705 more stable and less likely to shake during movement.

[0034] The top of the guide plate 11 is fixedly connected with an expansion plate 12 , which is arranged in a trapezoidal shape.

[0035] By providing the expansion plate 12 , the tooth plate 705 can be guided, so that the tooth plate 705 can smoothly enter the guide plate 11 after passing through the expansion plate 12 .

[0036] An extension groove 13 is formed on the top of the sampling platform 4 , and the extension groove 13 is loosely matched with the tooth plate 705 .

[0037] By providing the extension groove 13 , the extension groove 13 is used in conjunction with the tooth plate 705 , so that the tooth plate 705 can enter the extension groove 13 when moving downward, thereby preventing the tooth plate 705 from directly colliding with the sampling platform 4 and being damaged.

[0038] A fixing protrusion 14 is fixedly connected to the top of the sampling platform 4 , and a fixing groove 15 is provided at the bottom of the culture dish 5 , and the fixing protrusion 14 and the fixing groove 15 are loosely matched.

[0039] By providing the fixing protrusion 14 and the fixing groove 15 , a preliminary positioning effect can be achieved when the culture dish 5 is placed. When the fastening plate 6 is placed to press and fix the culture dish 5 , the culture dish 5 may be displaced.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A sampling device for air detection, comprising a sampling device body (1), characterized in that: A sampling groove (2) is provided on the top of the sampling device body (1), a sampler (3) is clamped on the top of the sampling groove (2), a sampling platform (4) is fixedly connected inside the sampling groove (2), a culture dish (5) is placed on the top of the sampling platform (4), a fastening plate (6) is slidably connected to the top of the culture dish (5), and a driving mechanism is fixedly connected to one side of the fastening plate (6).

2. The air detection sampling device according to claim 1, characterized in that: The driving mechanism comprises a fixing seat (701), one side of the fixing seat (701) is threadedly connected to a screw rod (702), the outer side of the screw rod (702) is rotatably connected to a fixing sleeve (703), and the bottom of the fixing sleeve (703) is fixedly connected to the top of the sampling platform (4).

3. The air detection sampling device according to claim 2, characterized in that: A gear (704) is fixedly connected to one side of the screw rod (702), a toothed plate (705) is meshedly connected to one side of the gear (704), and the top of the toothed plate (705) is fixedly connected to the bottom of the sampler (3).

4. The air detection sampling device according to claim 1, characterized in that: A connecting platform (8) is fixedly connected to the top of the inner side of the sampling tank (2), a clamping slot (9) is provided on one side of the connecting platform (8), and a buckle (10) is fixedly connected to the bottom of the sampling platform (4).

5. The air detection sampling device according to claim 3, characterized in that: A guide plate (11) is fixedly connected to the inner side of the sampling groove (2), and the guide plate (11) is slidably connected to the tooth plate (705).

6. The air detection sampling device according to claim 5, characterized in that: An expansion plate (12) is fixedly connected to the top of the guide plate (11), and the expansion plate (12) is arranged in a trapezoidal shape.

7. The air detection sampling device according to claim 3, characterized in that: An extension groove (13) is provided on the top of the sampling platform (4), and the extension groove (13) is clearance-matched with the tooth plate (705).

8. The air detection sampling device according to claim 1, characterized in that: A fixing protrusion (14) is fixedly connected to the top of the sampling platform (4), a fixing groove (15) is provided at the bottom of the culture dish (5), and the fixing protrusion (14) and the fixing groove (15) are loosely matched.

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