Floating bacteria sampler with flow detection function

Abstract

The utility model relates to a planktonic bacteria sampler with a flow detection function, and relates to the technical field of aerosol sampling, the planktonic bacteria sampler comprises a machine body with an air outlet hole, a sampling mechanism arranged at the top end of the machine body and a control system arranged in the machine body, the sampling mechanism comprises a sampling head and a base arranged below the sampling head, a sampling head is arranged in the machine body, a pore plate and a culture dish tray are sequentially arranged in the sampling head, a fan located in the machine body is arranged below the base, the fan is communicated with the base, the control system is used for controlling the fan to act, and the device further comprises a flow detection mechanism; the flow detection mechanism comprises a flow sensor, and the flow sensor communicates with the air outlet end of the fan and is electrically connected with the control system. By arranging the flow detection mechanism, rapid detection and stable control of the flow of the air outlet end of the fan are achieved, the sampling stability of the sampler is effectively guaranteed, and then the sampling performance of the sampler is guaranteed.

Description

Technical Field

[0001] This application relates to the field of aerosol sampling, and particularly to an airborne bacteria sampler with flow detection. Background Art

[0002] Currently, there are many airborne bacteria samplers on the market. Based on the Andersen impact principle and the isokinetic sampling principle, they capture airborne microorganisms onto a standard agar medium and then culture and count the medium. They are mainly applied in the pharmaceutical industry, food industry, hospitals, public places, etc.

[0003] It is understood that most products do not have a flow detection function. After long-term use, airflow instability or large airflow errors may occur, affecting the sampling performance. Since airflow is a core factor of this product, it needs to be improved. Utility Model Content

[0004] In view of the above problems, this application is proposed to provide an airborne bacteria sampler with flow detection that overcomes or at least partially solves the above problems.

[0005] The airborne bacteria sampler with flow detection provided by this application adopts the following technical solutions:

[0006] An airborne bacteria sampler with flow detection includes a body with an air outlet hole, a sampling mechanism arranged at the top of the body, and a control system arranged inside the body. The sampling mechanism includes a sampling head and a base arranged below the sampling head. A orifice plate and a culture dish tray are sequentially arranged inside the sampling head. A blower is arranged below the base inside the body, and the blower is communicated with the base. The control system is used to control the operation of the blower and also includes a flow detection mechanism; the flow detection mechanism includes a flow sensor, the flow sensor is communicated with the air outlet end of the blower and is electrically connected to the control system.

[0007] Optionally, an air outlet decorative plate is communicatively connected to the front end of the body, and the air outlet hole is arranged at the bottom of the air outlet decorative plate.

[0008] Optionally, the air outlet decorative plate is arranged in an arc-shaped inclined plane.

[0009] Optionally, the sampling head and the orifice plate are movably connected.

[0010] Optionally, a culture dish fixing component is arranged on the culture dish tray, which includes a plurality of L-shaped clamping claws. A plurality of installation grooves are uniformly arranged along the circumferential direction on the side wall of the culture dish tray for the lower ends of the clamping claws to be embedded and slid. Screws horizontally penetrating through the clamping claws and threadedly connected to the installation grooves are arranged on the clamping claws.

[0011] Optionally, a spring is sleeved on the screw.

[0012] Optionally, a plurality of clamping posts are uniformly arranged on the inner side wall of the sampling head along its circumferential direction, a plurality of arc-shaped clamping strips are arranged on the outer side wall of the base along its circumferential direction, a clamping groove is arranged on the arc-shaped clamping strip, and the clamping groove is used for the clamping posts to pass through, and the arc-shaped clamping strip is used for clamping the clamping posts.

[0013] Optionally, a ventilation plate is connected to the air outlet end of the fan, a ventilation hole is arranged in the middle of the ventilation plate, and a connector is in threaded connection with the ventilation hole.

[0014] Optionally, a gas guide cover is further included, the gas guide cover can be embedded in the sampling head, and a gas guide pipe is communicated with the gas guide cover.

[0015] Optionally, a handle is further arranged on the gas guide cover, and the handle is in threaded connection with the gas guide pipe.

[0016] In summary, the present application includes the following beneficial technical effects: by setting up a flow detection mechanism, the rapid detection and stable control of the flow at the air outlet end of the fan are realized, effectively ensuring the sampling stability of the sampler, and further ensuring the sampling performance of the sampler; by setting up an orifice plate movably connected to the sampling head, the sampling requirements of aerosols with different particle sizes are adapted, and while meeting the sampling requirements of aerosol particles with different particle sizes, the replacement cost is reduced; by setting up a gas guide cover, remote sampling is realized while minimizing the pollution of the external environment air to the inside of the sampling head in the non-working state. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0018] Figure 2 is the schematic diagram of the connection relationship between the sampling mechanism and the fan in the embodiment of the present application.

[0019] Figure 3 is the structural schematic diagram of the sampling mechanism in the embodiment of the present application.

[0020] Figure 4 is the structural schematic diagram of the air outlet decorative plate in the embodiment of the present application.

[0021] Figure 5 is the structural schematic diagram of the gas guide cover in the embodiment of the present application.

[0022] Description of reference numerals: 1, body; 11, air outlet trim; 111, air outlet hole; 2, sampling mechanism; 21, sampling head; 22, orifice plate; 23, petri dish tray; 231, installation groove; 24, base; 241, arc-shaped clamping strip; 2411, clamping groove; 3, flow rate detection mechanism; 31, flow sensor; 4, petri dish fixing component; 41, clamping jaw; 411, screw; 5, fan; 6, air guide cover; 61, air guide pipe; 62, handle. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only one embodiment of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains.

[0025] This embodiment provides a viable bacteria sampler with flow rate detection.

[0026] Referring to Figure 1 , Figure 2 and Figure 3 , a viable bacteria sampler with flow rate detection includes a body 1, a sampling mechanism 2, a control system and a flow rate detection mechanism 3. The sampling mechanism 2 is arranged at the top of the body 1, and the control system and the flow rate detection mechanism 3 are arranged inside the body 1.

[0027] The sampling mechanism 2 includes a sampling head 21, an orifice plate 22, a petri dish tray 23 and a base 24. The base 24 is arranged at the top of the body 1 and below the sampling head 21, and is used to carry the sampling head 21. The orifice plate 22 and the petri dish tray 23 are arranged in the sampling head 21 in sequence from top to bottom.

[0028] The orifice plate 22 is used to filter aerosol, and is movably connected to the sampling head 21. The specific connection method can be embedded clamping or threaded connection, etc. The preferred method is embedded clamping to realize the separate replacement of the orifice plate 22, meet the sampling requirements of aerosol particles with different particle sizes and reduce the replacement cost at the same time.

[0029] Referring to Figure 3, the petri dish tray 23 is used to place petri dishes, and in order to fix the petri dishes, a petri dish fixing component 4 is provided on the petri dish tray 23. The petri dish fixing component 4 includes a plurality of L-shaped clamping jaws 41. A plurality of mounting grooves 231 corresponding to the number of clamping jaws 41 are arranged on the upper side wall of the petri dish tray 23 along its circumferential direction. The lower end of the clamping jaw 41 is embedded in the mounting groove 231 and can slide horizontally along it, and the upper end is used to clamp the petri dish.

[0030] In order to adapt to the fixing needs of petri dishes of various specifications, a screw 411 threadedly connected to the mounting groove 231 is horizontally penetrated through the clamping jaw 41, so as to adjust the distance between the clamping jaws 41 relative to each other through the screw 411 to adapt to the installation needs of petri dishes of various specifications. At the same time, in order to facilitate the disengagement of the screw 411 and the mounting groove 231, a spring is sleeved on the screw 411.

[0031] Refer to Figure 3 , in order to achieve the installation, disassembly and convenience of the petri dish, the sampling head 21 and the base 24 are also connected in a movable manner. A plurality of clamping columns are evenly arranged on the inner side wall of the sampling head 21 along its circumferential direction. The clamping columns are horizontally arranged relative to the axis direction of the sampling head 21. A plurality of arc-shaped clamping strips 241 corresponding to the number of clamping columns are evenly arranged on the outer side wall of the base 24 along its circumferential direction. A clamping groove 2411 is vertically arranged on each arc-shaped clamping strip 241, and the clamping groove 2411 is used for the clamping column to pass through, and the arc-shaped clamping strip 241 is used for clamping the clamping column.

[0032] When installing the sampling head 21, only need to align the clamping column with the clamping groove 2411, then drive the sampling head 21 downward until it touches the base 24, and then rotate the sampling head 21 by a certain angle. At this time, the arc-shaped clamping strip 241 will clamp the clamping column, and the rapid installation of the sampling head 21 and the base 24 can be realized; similarly, when disassembling the sampling head 21, only need to rotate the sampling head 21 to align the clamping column with the clamping groove 2411, and then drive the sampling head 21 upward to realize the rapid disassembly of the sampling head 21 and the base 24.

[0033] Refer to Figure 1 , Figure 2 , a blower 5 is arranged at the top inside the machine body 1. The air inlet end of the blower 5 is connected to the base 24. Under the action of the blower 5, the ambient air enriches the microorganisms in the air in the petri dish based on the impact principle when passing through the sampling mechanism 2, achieving the sampling purpose.

[0034] The control system is used to control the operation of the blower 5. In order to ensure the stability of the air flow during the sampling process, a flow detection mechanism 3 electrically connected to the control system is also arranged at the outlet of the blower 5. The flow detection mechanism 3 includes a flow sensor 31.

[0035] A ventilation plate is connected to the air outlet end of the fan 5. A ventilation hole is provided in the middle position of the ventilation plate. A connector is threadedly connected in the ventilation hole. The flow sensor 31 is connected to the connector through a pipeline to measure the air flow rate at the air outlet end of the fan 5 through a proportional detection method, and cooperate with the control system to adjust the rotation speed of the fan 5 in real time to ensure the stability of the air flow of the sampler during the sampling process;

[0036] During the sampling process, if it is detected that the air flow rate is lower than the calibrated value, the rotation speed of the fan 5 is increased through the control system to increase the air volume; if it is detected that the air flow rate is higher than the calibrated value, the rotation speed of the fan 5 is decreased through the control system to reduce the air volume, so as to realize stable air flow rate sampling.

[0037] Refer to Figure 1 、 Figure 4 Referring to

[0038] Refer to Figure 5 In order to achieve remote sampling, the sampler further includes a gas guide cover 6. The gas guide cover 6 is used to be embedded in the sampling head 21. A gas guide pipe 61 is connected to the gas guide cover 6. The gas guide pipe 61 is connected to the remote sampling mechanism 2 through a gas path, and remote sampling work can be carried out.

[0039] In order to reduce the pollution of the inside of the sampling head 21 by the external environment in the non-working state, a handle 62 threadedly connected to the gas guide pipe 61 is further provided on the gas guide cover 6 to block the gas guide pipe 61, and at the same time it is also convenient to separate the gas guide cover 6 from the sampling head 21.

[0040] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A floating bacteria sampler with flow detection, comprising a body (1) with an air outlet (111), a sampling mechanism (2) arranged at the top of the body (1), and a control system arranged inside the body (1), wherein the sampling mechanism (2) comprises a sampling head (21) and a base (24) arranged below the sampling head (21), wherein an orifice plate (22) and a culture dish tray (23) are arranged in sequence inside the sampling head (21), and a fan (5) located inside the body (1) is arranged below the base (24), and the fan (5) is connected to the base (24), and the control system is used to control the action of the fan (5), characterized in that: It also includes a flow detection mechanism (3); The flow detection mechanism (3) comprises a flow sensor (31), and the flow sensor (31) is connected to the air outlet end of the fan (5) and is electrically connected to the control system.

2. A floating bacteria sampler with flow detection according to claim 1, characterized in that: The front end of the machine body (1) is connected to an air outlet decorative plate (11), and the air outlet hole (111) is arranged at the bottom of the air outlet decorative plate (11).

3. A floating bacteria sampler with flow detection according to claim 2, characterized in that: The air outlet decorative plate (11) is arranged in the shape of an arc slope.

4. The floating bacteria sampler with flow detection according to claim 1, characterized in that: The sampling head (21) and the orifice plate (22) are movably connected.

5. The floating bacteria sampler with flow detection according to claim 1, characterized in that: The culture dish tray (23) is provided with a culture dish fixing assembly (4), which comprises a plurality of L-shaped clamping jaws (41); a plurality of mounting grooves (231) are evenly arranged on the side wall of the culture dish tray (23) along its circumferential direction; the mounting grooves (231) are used for the lower ends of the clamping jaws (41) to be inserted and slidably moved; and screws (411) threadedly connected to the mounting grooves (231) are horizontally penetrated on the clamping jaws (41).

6. The floating bacteria sampler with flow detection according to claim 5, characterized in that: The screw (411) is sleeved with a spring.

7. The floating bacteria sampler with flow detection according to claim 1, characterized in that: A plurality of clamping columns are evenly arranged on the inner wall of the sampling head (21) along its circumferential direction, a plurality of arc-shaped clamping strips (241) are arranged on the outer wall of the base (24) along its circumferential direction, a clamping groove (2411) is arranged on the arc-shaped clamping strip (241), and the clamping groove (2411) is used for the clamping column to pass through, and the arc-shaped clamping strip (241) is used for clamping the clamping column.

8. The floating bacteria sampler with flow detection according to claim 1, characterized in that: The air outlet end of the fan (5) is connected to a ventilation plate, a ventilation hole is arranged in the middle of the ventilation plate, and a joint is threadedly connected to the inside of the ventilation hole.

9. The floating bacteria sampler with flow detection according to claim 1, characterized in that: It also comprises an air guide cover (6), which can be embedded in the sampling head (21), and an air guide pipe (61) is connected to the air guide cover (6).

10. The floating bacteria sampler with flow detection according to claim 9, characterized in that: The air guide cover (6) is also provided with a handle (62), and the handle (62) is threadedly connected to the air guide pipe (61).

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