A plankton sampler

Abstract

The utility model relates to a kind of bacteria sampling device, including sampler main body, sampler main body has negative pressure passage, the air inlet end of negative pressure passage is fixed first magnetic force column, still including collection cover, handheld column, hose, support pipe and placement tray, this sampler is divided into static fixed-point sampling and dynamic mobile sampling two states.Static fixed-point sampling state, applicable to single point long time continuous monitoring.Static fixed-point sampling state does not use hose and handheld column, dynamic mobile sampling state, airflow enters the drainage passage of handheld column along support pipe inner wall.After airflow is guided out through drainage passage, it is transported to the collection cover's collection end by hose.Hose flexibility ensures that air path is sealed when handheld column moves.Air enters the negative pressure passage of sampler main body from the collection cover flared end, planktonic bacteria are intercepted on the surface of petri dish.Support pipe and the collaborative design of drainage passage make airflow keep stable flow rate during moving.

Description

Technical Field

[0001] This utility model relates to a planktonic bacteria sampler, specifically a mobile planktonic bacteria sampler. Background Technology

[0002] As a core device for environmental microbial monitoring, airborne microbial samplers typically employ a rectangular shell structure and are placed statically on a platform or ground for sampling. During operation, the device relies on an internal air extraction system to create negative pressure, capturing airborne microbial particles onto a collection medium, such as a petri dish. However, traditional airborne microbial samplers must remain stationary at all times, making continuous air sample collection impossible while the device is being moved. When monitoring multiple locations for airborne microbial samples, operators must repeatedly move the device to different positions, which is not only inefficient but also prone to data inaccuracies due to vibrations during transport. Utility Model Content

[0003] The main purpose of this invention is to provide a planktonic bacteria sampler to solve the problem that existing planktonic bacteria samplers require operators to repeatedly move the equipment to different locations when multiple locations need to be monitored for planktonic bacteria. This is not only inefficient, but also prone to data deviation due to equipment vibration during the moving process.

[0004] To achieve the above objectives, this utility model provides a planar bacteria sampler, including a sampler body with a negative pressure channel. A first magnetic column is fixed at the air inlet end of the negative pressure channel. The sampler body also includes a collection hood, a handheld column, a hose, a support tube, and a placement tray. The flared end of the collection hood is detachably mounted on the sampler body and communicates with the negative pressure channel. The handheld column has a drainage channel. A second magnetic column is fixed at the inlet end of the drainage channel. Both ends of the hose are respectively connected to the constricted end of the collection hood and the outlet end of the drainage channel. A mesh tray is coaxially fixed on the inner wall of the support tube. One end of the support tube is detachably mounted on the top wall of the sampler body or the top wall of the handheld column.

[0005] The top wall of the placement tray is equipped with a clamp for holding the culture dish, and the bottom wall is coaxially fixed with a third magnetic column, which can be attracted to the first magnetic column or the second magnetic column.

[0006] Preferably, a first threaded tube is fixed to the top of the sampler body;

[0007] The air inlet of the negative pressure channel is located inside the first threaded pipe;

[0008] A second threaded pipe is coaxially fixed to the top wall of the handheld column;

[0009] The inlet end of the drainage channel is fitted inside the second threaded tube;

[0010] One end of the support tube is threaded, and the threaded end is screwed to the first threaded tube or the second threaded tube.

[0011] Preferably, the threaded end is screwed to the first threaded pipe, and the third magnetic column is attracted to the first magnetic column, so that the placement tray is located between the top of the mesh tray and the sampler body.

[0012] The threaded end is screwed to the second threaded tube, and the third magnetic column attracts the second magnetic column, so that the placement tray is located between the top of the mesh tray and the handheld column.

[0013] Preferably, the constricted end of the collection hood is coaxially connected to the air inlet pipe;

[0014] The air outlet of the drainage channel is fixedly connected to the air outlet pipe. The air outlet of the drainage channel is fixedly connected to the air outlet pipe. The two ends of the hose are connected to the end of the air inlet pipe away from the collection hood and the end of the air outlet pipe away from the drainage channel.

[0015] Preferably, multiple notches are made around the circumference of the edge of the placement plate.

[0016] Preferably, the placement tray has multiple slides and multiple top grooves around its circumference, with each slide and top groove corresponding to the other and connected to the other. The slides are arranged radially along the placement tray.

[0017] The fixture includes multiple L-shaped plates and multiple springs, with each L-shaped plate and spring corresponding to a specific slide rail.

[0018] One end of the spring is fixedly connected to the inner wall of the slide, and the other end is fixedly connected to one end of the L-shaped plate along the length of the slide. One end of the L-shaped plate is slidably set in the slide, and the other end extends out of the top groove and abuts against the petri dish.

[0019] Preferably, a flexible block is fixed at the end of each L-shaped plate away from the slide, and the end of the flexible block away from the L-shaped plate has an inclined surface and a vertical surface, with the vertical surface located at the bottom of the inclined surface.

[0020] Preferably, a handle is hinged to the sampler body.

[0021] Preferably, a dust cover is provided on the end of the support tube away from the threaded end.

[0022] The beneficial effects of the above scheme are:

[0023] This sampler has two states: static fixed-point sampling and dynamic moving sampling.

[0024] State 1: Static fixed-point sampling state. One end of the support tube is detachably fixed to the top wall of the sampler body. The mesh tray on the inner wall of the support tube acts as a buffer and preliminary filter for airflow. The placement tray is fixed by the adsorption of the third magnetic column on the bottom wall to the first magnetic column at the air inlet end of the negative pressure channel of the sampler body. The clamp firmly holds the culture dish. The negative pressure system of the sampler body is activated, and the airflow enters the mesh tray area inside the support tube. After the airflow is homogenized, it passes through the negative pressure channel, and finally, the airborne bacteria are intercepted on the surface of the culture dish. The equipment is placed statically, suitable for long-term continuous monitoring at a single point. In the static fixed-point sampling state, the tubing and handheld column are not used.

[0025] State 2: Dynamic mobile sampling state. One end of the support tube is detachably fixed to the top wall of the handheld column. The placement tray is attached to the second magnetic post at the top of the handheld column via a third magnetic post. The clamp securely holds the culture dish. The flared end of the collection hood remains connected to the sampler body, and its constricted end is connected to the outlet end of the drainage channel of the handheld column via a flexible tube, forming a closed-loop air path. Air enters through the mesh tray at the opening end of the support tube, where it performs preliminary airflow equalization and filtration to prevent large particles from directly contacting the culture dish. The airflow enters the drainage channel of the handheld column along the inner wall of the support tube. After being discharged through the drainage channel, the airflow is delivered to the constricted end of the collection hood via a flexible tube. The flexibility of the flexible tube ensures the air path is sealed during handheld column movement, preventing contamination or leakage. Air enters the negative pressure channel of the sampler body from the flared end of the collection hood. Under negative pressure, airborne bacteria are intercepted on the surface of the culture dish. The coordinated design of the support tube and the drainage channel maintains a stable airflow velocity during movement, reducing vibration interference. Attached Figure Description

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model in two states;

[0028] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention in two parts.

[0029] Figure 3 This is a cross-sectional view of another part of the structure of this utility model in state two;

[0030] Figure 4 This is a cross-sectional structural diagram of the placement tray of this utility model;

[0031] Figure 5 This is a three-dimensional structural diagram of the present invention.

[0032] Figure 6 This is a schematic diagram of the structure of this utility model in the state of explosion.

[0033] Explanation of reference numerals in the attached figures

[0034] 1. Sampler body; 2. Negative pressure channel; 3. First magnetic column; 4. First threaded tube; 5. Handle; 10. Collection cover; 11. Air inlet pipe; 20. Handheld column; 21. Drainage channel; 22. Second magnetic column; 23. Second threaded tube; 24. Air outlet pipe; 30. Flexible tube; 40. Support tube; 41. Grid tray; 50. Placement tray; 51. Third magnetic column; 52. Notch; 501. Slide; 502. Top groove; 60. Petri dish; 70. Clamp; 71. L-shaped plate; 72. Spring; 73. Flexible block; 730. Inclined surface; 731. Vertical surface; 80. Dust cover. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0036] like Figures 1-6 As shown, this embodiment provides a planar microbial sampler, including a sampler body 1. The sampler body 1 adopts existing technology, so it will not be described in detail. Please refer to publication number CN1221658-Portable Aerial Planar Microbial Sampler or publication (announcement) number CN218435740U-A Planar Microbial Sampler. A handle 5 is hinged to the sampler body 1. The sampler body 1 has a negative pressure channel 2, such as... Figure 3 As shown, a first magnetic column 3 is fixed at the air inlet end of the negative pressure channel 2. The airborne bacteria sampler also includes a collection hood 10, a handheld column 20, a flexible tube 30, a support tube 40, and a placement tray 50. The flared end of the collection hood 10 is detachably mounted on the sampler body 1, and the collection hood 10 is connected to the negative pressure channel 2. Figure 2 As shown, the handheld column 20 has a drainage channel 21, and a second magnetic column 22 is fixed at the inlet end of the drainage channel 21, as shown. Figure 1 As shown, both ends of the flexible tube 30 are connected to the constriction end of the collection hood 10 and the outlet end of the drainage channel 21, respectively. A mesh tray 41 is coaxially fixed to the inner wall of the support tube 40, and one end of the support tube 40 can be detached from the top wall of the sampler body 1 or the top wall of the handheld column 20. As shown in 6, the top wall of the placement tray 50 is provided with a clamp 70 for holding the culture dish 60, and the bottom wall of the placement tray 50 is coaxially fixed with a third magnetic column 51, which can be attracted to the first magnetic column 3 or the second magnetic column 22.

[0037] Multiple slides 501 and multiple top grooves 502 are formed around the circumference of the placement tray 50. The slides 501 and top grooves 502 correspond one-to-one and are connected. The slides 501 are arranged radially along the placement tray 50. For example... Figure 4 As shown, the clamp 70 includes multiple L-shaped plates 71 and multiple springs 72, with each L-shaped plate 71 and spring 72 corresponding to one another, and each L-shaped plate 71 corresponding to one another slide rail 501. One end of each spring 72 is fixedly connected to the inner wall of the slide rail 501, and the other end of each spring 72 is fixedly connected to one end of each L-shaped plate 71 along the length of the slide rail 501. One end of each L-shaped plate 71 is slidably disposed within the slide rail 501, and the other end of each L-shaped plate 71 extends through the top groove 502 and abuts against the culture dish 60. A flexible block 73 is fixedly attached to the end of each L-shaped plate 71 away from the slide rail 501. The end of each flexible block 73 away from the L-shaped plate has an inclined surface 730 and a vertical surface 731, with the vertical surface 731 located at the bottom of the inclined surface 730. The culture dish 60 is pressed vertically down onto the surface of the placement plate 50. The edge of the culture dish 60 gradually contacts the inclined surface 730 of the flexible block 73 at the end of the L-shaped plate 71. Multiple L-shaped plates 71 are evenly distributed, and the spring force 72 provides uniform radial pressure to firmly fix the culture dish 60 on the placement plate 50. At the same time, the flexible block 73 buffers the clamping force to avoid damaging the culture dish 60.

[0038] This sampler has two states: static fixed-point sampling and dynamic moving sampling.

[0039] like Figure 5 , Figure 6 As shown, in state one: static fixed-point sampling state, one end of the support tube 40 is detachably fixed to the top wall of the sampler body 1. The mesh tray 41 on the inner wall of the support tube 40 acts as an airflow buffer and preliminary filter. The placement tray 50 is attracted and fixed to the first magnetic post 3 at the air inlet end of the negative pressure channel 2 of the sampler body 1 by the third magnetic post 51 on the bottom wall. The clamp 70 firmly holds the culture dish 60. The negative pressure system of the sampler body 1 is activated, and the airflow enters the mesh tray 41 area inside the support tube 40. After the airflow is homogenized, it passes through the negative pressure channel 2, and finally the airborne bacteria are intercepted on the surface of the culture dish 60. The device is placed statically, which is suitable for long-term continuous monitoring at a single point. It should be noted that the flexible tube 30 and the handheld column 20 are not used in the static fixed-point sampling state.

[0040] like Figures 1-4As shown, in state two: dynamic mobile sampling state, one end of the support tube 40 is detachably fixed to the top wall of the handheld column 20. The placement tray 50 is attracted and fixed to the second magnetic column 22 at the top of the handheld column 20 via the third magnetic column 51. The clamp 70 firmly holds the culture dish 60. The flared end of the collection cover 10 remains connected to the sampler body 1, and its constricted end is connected to the outlet end of the drainage channel 21 of the handheld column 20 via the flexible tube 30, forming a closed-loop air path. Air enters through the mesh tray 41 at the open end of the support tube 40. The mesh tray 41 performs preliminary flow equalization and filtration of the airflow to prevent large particles of impurities from directly contacting the culture dish 60. The airflow enters the drainage channel 21 of the handheld column 20 along the inner wall of the support tube 40. After being discharged through the drainage channel 21, the airflow is delivered to the constricted end of the collection cover 10 via the flexible tube 30. The flexibility of the flexible tube 30 ensures the air path is sealed when the handheld column 20 moves, avoiding contamination or leakage. Air enters the negative pressure channel 2 of the sampler body 1 from the flared end of the collection hood 10. Under the action of negative pressure, airborne bacteria are intercepted on the surface of the culture dish 60. The coordinated design of the support tube 40 and the drainage channel 21 ensures that the airflow maintains a stable velocity during movement, reducing vibration interference.

[0041] like Figure 6 As shown, a first threaded tube 4 is fixed to the top of the sampler body 1. The air inlet of the negative pressure channel 2 is located inside the first threaded tube 4. Figure 2 As shown, a second threaded tube 23 is coaxially fixed to the top wall of the handheld column 20. The inlet end of the drainage channel 21 is fitted inside the second threaded tube 23. One end of the support tube 40 has a threaded end (not shown) around its circumference, which is screwed to either the first threaded tube 4 or the second threaded tube 23. When the threaded end is screwed to the first threaded tube 4, the third magnetic column 51 and the first magnetic column 3 attract each other, so that the placement tray 50 is located between the top of the mesh tray 41 and the sampler body 1. The threaded end being screwed to the first threaded tube 4 is the state one mode. When the threaded end is screwed to the second threaded tube 23, the third magnetic column 51 and the second magnetic column 22 attract each other, so that the placement tray 50 is located between the top of the mesh tray 41 and the handheld column 20. The threaded end being screwed to the second threaded tube 23 is the state two mode.

[0042] The constricted end of the collection hood 10 is coaxially connected to the air inlet pipe 11. The air outlet of the drainage channel 21 is fixedly connected to the air outlet pipe 24. Both ends of the flexible hose 30 are inserted into the end of the air inlet pipe 11 away from the collection hood 10 and the end of the air outlet pipe 24 away from the drainage channel 21. Multiple notches 52 are made around the edge of the placement tray 50. The notches 52 are designed to facilitate the operator to take samples from the placement tray 50. A dust cover 80 is placed on the end of the support tube 40 away from the threaded end.

[0043] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A planar microbial sampler, comprising a sampler body, the sampler body having a negative pressure channel, wherein a first magnetic column is fixedly disposed at the air inlet end of the negative pressure channel, characterized in that, It also includes a collection hood, a handheld column, a hose, a support tube, and a placement tray. The flared end of the collection hood is detachably mounted on the sampler body and communicates with the negative pressure channel. The handheld column has a drainage channel, and a second magnetic column is fixed at the inlet end of the drainage channel. Both ends of the hose are respectively connected to the constricted end of the collection hood and the outlet end of the drainage channel. A mesh tray is coaxially fixed on the inner wall of the support tube, and one end of the support tube is detachable from the top wall of the sampler body or the top wall of the handheld column. The top wall of the placement tray is provided with a clamp for holding the culture dish, and the bottom wall is coaxially fixed with a third magnetic column, which can be attracted to the first magnetic column or the second magnetic column.

2. The airborne bacteria sampler according to claim 1, characterized in that, A first threaded tube is fixed to the top of the sampler body; The air inlet of the negative pressure channel is located inside the first threaded pipe; The top wall of the handheld column is coaxially fixed with a second threaded tube; The inlet end of the drainage channel is sleeved inside the second threaded tube; One end of the support tube is threaded, and the threaded end is screwed to the first threaded tube or the second threaded tube.

3. The airborne bacteria sampler according to claim 2, characterized in that, The threaded end is screwed to the first threaded tube, and the third magnetic column is attracted to the first magnetic column, so that the placement disk is located between the top of the mesh disk and the sampler body; The threaded end is screwed to the second threaded tube, and the third magnetic column is attracted to the second magnetic column, so that the placement plate is located between the top of the net plate and the handheld column.

4. The airborne bacteria sampler according to claim 2, characterized in that, The collection hood's constricted end is coaxially connected to the air inlet pipe; The outlet of the drainage channel is fixedly connected to the outlet pipe, and the two ends of the hose are inserted into the end of the inlet pipe away from the collection hood and the end of the outlet pipe away from the drainage channel.

5. The airborne bacteria sampler according to claim 1, characterized in that, The placement tray has multiple notches around its circumference at the edge.

6. The airborne bacteria sampler according to any one of claims 1-5, characterized in that, The placement tray has multiple slides and multiple top grooves around its circumference. The slides and top grooves correspond one-to-one and are connected. The slides are arranged radially along the placement tray. The clamp includes multiple L-shaped plates and multiple springs, with each L-shaped plate and spring corresponding to a specific one, and each spring corresponding to a specific one of the slide rails. One end of the spring is fixedly connected to the inner wall of the slide, and the other end is fixedly connected to one end of the L-shaped plate along the length of the slide. One end of the L-shaped plate is slidably disposed in the slide, and the other end extends out of the top groove and abuts against the culture dish.

7. The airborne bacteria sampler according to claim 6, characterized in that, A flexible block is fixed at one end of each L-shaped plate away from the slide. The flexible block has an inclined surface and a vertical surface at the end away from the L-shaped plate, and the vertical surface is located at the bottom of the inclined surface.

8. The airborne bacteria sampler according to claim 1, characterized in that, A handle is hinged to the main body of the sampler.

9. The airborne bacteria sampler according to claim 2, characterized in that, A dust cover is provided at the end of the support tube furthest from the threaded end.

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