Gravity sensing type biological aerosol sampler

Abstract

The utility model relates to the technical field of sampling equipment. A gravity sensing type biological aerosol sampler comprises a sampling cup, a sample bottle and a sampling liquid bottle, the bottom of the sampling cup is in butt joint with the sample bottle through a liquid drainage channel, the sampling cup is in butt joint with the sampling liquid bottle through a liquid supplementing channel, the gravity sensing type biological aerosol sampler further comprises an equipment case, and an upper storage plate and a lower storage plate are arranged in the equipment case; a first weighing platform is mounted above the upper storage plate, and a sample bottle is placed on the first weighing platform; a second weighing platform is mounted above the lower storage plate, and a sampling liquid bottle is placed on the second weighing platform; a sampling cup cover is mounted at the top of the equipment case, the sampling cup is mounted on the sampling cup cover, and a sensor for sensing the liquid amount in the sampling cup is mounted on the sampling cup cover; a shutter box is mounted at the top of the equipment case and covers the sampling cup and the sampling cup cover. According to the utility model, the liquid amount in the sampling cup, the weight of the sample bottle and the weight of the sampling liquid bottle are detected.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, specifically to an aerosol sampler. Background Technology

[0002] Various microorganisms, also known as bioaerosols, exist in the air, and their concentration has become a way to assess air quality. On the one hand, air pollution control is particularly important in the pharmaceutical, cosmetic, and food industries, as their production workshops and products are especially sensitive to specific bioaerosol contamination. Other specialized production processes also require strictly sterile environments, making bioaerosol sampling technology a fundamental assessment method. On the other hand, samplers are also needed in outdoor environments for environmental monitoring and quality assessment.

[0003] Existing aerosol samplers cannot monitor the weight of the sampled liquid and the sample in real time during the sampling process, which is not conducive to long-term unattended operation. Staff need to check them regularly, and they cannot be used outdoors. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a gravity-sensing bioaerosol sampler, which solves at least one of the aforementioned technical problems.

[0005] The technical solution of this utility model is: a gravity-sensing bioaerosol sampler, including a sampling cup, a sample bottle and a sampling liquid bottle, wherein the bottom of the sampling cup is connected to the sample bottle through a drain channel and the sampling cup is connected to the sampling liquid bottle through a replenishment channel. The feature is that it also includes a device chassis, wherein the device chassis is provided with an upper shelf and a lower shelf arranged vertically.

[0006] A first weighing platform is installed above the upper placement plate, and the first weighing platform is used to place the sample bottle;

[0007] A second weighing platform is installed above the lower plate, and the second weighing platform is used to place the sampling liquid bottle;

[0008] A sampling cup cover is installed on the top of the equipment chassis, the sampling cup is mounted on the sampling cup cover, and a sensor is installed on the sampling cup cover to face the sampling cup and sense the liquid volume in the sampling cup;

[0009] The top of the equipment chassis is equipped with a louvered box, which covers the outside of the sampling cup and the sampling cup cover.

[0010] This invention optimizes the structure of the aerosol sampler and facilitates intelligent monitoring of the sampling level by detecting the liquid volume in the sampling cup, the weight of the sample bottle, and the weight of the sampling liquid bottle.

[0011] Once sampling is initiated, the sampling liquid bottle replenishes a certain amount of sampling liquid into the sampling cup through the replenishment channel. After a period of sampling, when the sensor detects that the liquid level in the sampling cup is lower than a set value, sampling stops. At this point, the sampling cup drains the liquid containing the atmospheric sample into the sample bottle through the drain channel. Then, the sampling liquid bottle continues to replenish a certain amount of sampling liquid into the sampling cup through the replenishment channel, starting the next round of sampling.

[0012] More preferably, the top of the louvered box is closed, the louvered box includes a vertically arranged mounting column, and annular blades arranged from top to bottom are connected to the mounting column, with air gaps between adjacent annular blades, and the outer diameter of the annular blades increases from top to bottom.

[0013] More preferably, the sampling cup is provided with an air inlet and an air outlet, and the air outlet is connected to a fan through an exhaust channel;

[0014] The exhaust channel is located inside the sampling cup cover;

[0015] The fan is mounted on the top of the equipment chassis, and an LED light is also mounted on the top of the equipment chassis. The LED light is located around the fan, and the LED light includes a lampshade with an opening for the fan to discharge air. The air outlet of the fan is embedded in the opening.

[0016] More preferably, the equipment chassis includes a cabinet and a cabinet door, wherein the cabinet door is detachably connected to the cabinet;

[0017] The cabinet body is provided with an operating port for installing cabinet doors;

[0018] The operating port is directly opposite the sample bottle and the sampling liquid bottle.

[0019] More preferably, the sensor is a fiber optic sensing head. Because the light emitted by the light source of the fiber optic sensing head, after passing through the liquid surface and reflected back to the photodetector of the fiber optic sensing head, differs from the light signal emitted by the light source of the fiber optic sensing head, after passing through the sampling cup wall and reflected back to the photodetector of the fiber optic sensing head. The processor senses whether the liquid level is below the position of the fiber optic sensing head; once the liquid level is below the fiber optic sensing head, the processor controls the liquid in the sampling cup to be introduced into the sample cup.

[0020] More preferably, the top of the equipment chassis is detachably connected to a support column, the support column is detachably connected to an annular support plate, and the louvered box is detachably connected to the annular support plate.

[0021] More preferably, a temperature and humidity sensor is detachably mounted on the sampling cup cover.

[0022] Used to sense the temperature and humidity of the environment in which the sampling cup is located.

[0023] More preferably, the upper placement plate is an upper annular support plate, the first weighing platform includes a first pressure sensor and a first support bracket, the first pressure sensor is detachably mounted on the upper annular support plate, and the force-bearing end of the first pressure sensor is detachably mounted on the first support bracket, and the outer edge of the first support bracket is provided with at least three circumferentially arranged and upwardly extending limiting extensions.

[0024] The lower plate is a lower ring-shaped support plate. The second weighing platform includes a second pressure sensor and a second support bracket. The second pressure sensor is detachably mounted on the lower ring-shaped support plate, and the force-bearing end of the second pressure sensor is detachably mounted on the second support bracket. The outer edge of the second support bracket is provided with at least three circumferentially arranged and upwardly extending limiting extensions.

[0025] More preferably, the outer wall of the fan is covered with sound-absorbing cotton. The sound-absorbing cotton reduces sampling noise.

[0026] More preferably, a display screen is installed inside the equipment chassis, and the display screen faces the cabinet door.

[0027] More preferably, the display screen is connected to a controller located inside the device chassis, and the controller is connected to the first pressure sensor, the second pressure sensor, and the sensor.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] 1) Through weight and liquid level sensing, multi-parameter monitoring is convenient. No human intervention or monitoring is required.

[0030] 2) The louvered box provides dust and rain protection under outdoor conditions, ensuring sampling quality.

[0031] 3) The noise of the sampling was reduced by the installation of sound insulation cotton. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a specific embodiment 1 of the present utility model;

[0033] Figure 2 This is a structural schematic diagram from another perspective of a specific embodiment 1 of the present utility model;

[0034] Figure 3 This is a partial structural schematic diagram of a specific embodiment 1 of the present utility model;

[0035] Figure 4 This is a partial structural schematic diagram of a specific embodiment 1 of the present utility model;

[0036] Figure 5 This is a partial structural schematic diagram of a specific embodiment 1 of the present utility model;

[0037] Figure 6 This is a partial structural schematic diagram of a specific embodiment 1 of the present utility model.

[0038] In the diagram, 1 is the sampling cup, 2 is the sample bottle, 3 is the sampling liquid bottle, 4 is the sampling cup cover, 5 is the sensor, 6 is the first weighing platform, 7 is the second weighing platform, 8 is the fan, 9 is the lampshade, 10 is the annular blade, 11 is the mounting column, 12 is the upper placement plate, 13 is the lower placement plate, 14 is the air inlet, 15 is the temperature and humidity sensor, 16 is the waterproof connector, 17 is the display screen, 61 is the first pressure sensor, 62 is the first support bracket, 71 is the second pressure sensor, 72 is the second support bracket, 81 is the air outlet, and 82 is the sound insulation cotton. Detailed Implementation

[0039] See Figures 1 to 6 Specific embodiment 1: A gravity-sensing bioaerosol sampler includes a sampling cup 1, a sample bottle 2, and a sampling liquid bottle 3. The bottom of the sampling cup 1 is connected to the sample bottle 2 via a drainage channel, and the sampling cup 1 is connected to the sampling liquid bottle 3 via a replenishment channel. The sampler also includes a device housing, inside which are an upper placement plate 12 and a lower placement plate 13 arranged vertically. A first weighing platform 6 is installed above the upper placement plate 12, on which the sample bottle 2 is placed. A second weighing platform 7 is installed above the lower placement plate 13, on which the sampling liquid bottle 3 is placed. A sampling cup cover 4 is installed on the top of the device housing, and the sampling cup 1 is mounted on the sampling cup cover 4. A sensor 5 is installed on the sampling cup cover 4 to sense the liquid volume inside the sampling cup 1. A louvered box is installed on the top of the device housing, covering the outside of the sampling cup 1 and the sampling cup cover 4. This invention optimizes the structure of the aerosol sampler and facilitates intelligent monitoring of the sampling level by detecting the liquid volume in the sampling cup 1, the weight of the sample bottle 2, and the weight of the sampling liquid bottle 3.

[0040] A peristaltic pump is installed on the fluid replenishment channel. Sampling fluid is drawn from the sampling bottle and added to the sampling cup.

[0041] A peristaltic pump is installed on the drainage channel. It transfers the sampled liquid from the sampling cup to the sample vial. A valve is installed at the bottom of the sampling cup to connect to the drainage channel, controlling the opening and closing of the drainage.

[0042] A support column is detachably connected to the top of the equipment chassis, and the support column is detachably connected to an annular support plate. A mounting column 11 is detachably mounted on the annular support plate. A louvered box is detachably connected to the annular support plate. The top of the louvered box is closed. The louvered box includes a vertically arranged mounting column 11, on which annular blades 10 are connected from top to bottom. Air gaps exist between adjacent annular blades 10, and the outer diameter of the annular blades 10 increases from top to bottom. The mounting column 11 is detachably connected to the annular support plate.

[0043] After sampling is initiated, sampling liquid bottle 3 replenishes a certain amount of sampling liquid into sampling cup 1 through the replenishment channel. After a period of sampling, when sensor 5 detects that the liquid level in sampling cup 1 is lower than the set value, sampling stops. At this time, sampling cup 1 drains the liquid containing the atmospheric sample into sample bottle 2 through the drain channel. Then, sampling liquid bottle 3 continues to replenish a certain amount of sampling liquid into sampling cup 1 through the replenishment channel, starting the next round of sampling.

[0044] The sampling cup 1 is equipped with an air inlet 14 and an air outlet. The air outlet is connected to a fan 8 via an exhaust channel. The exhaust channel is located inside the sampling cup cover 4. The fan 8 is installed on the top of the equipment chassis, and an LED light is also installed on the top of the equipment chassis. The LED light is located around the fan 8 and includes a lampshade 9 with an opening on the lampshade 9 for the fan 8 to exhaust air. The air outlet 81 of the fan 8 is embedded in the opening. The outer wall of the fan 8 is covered with sound insulation cotton 82. The sound insulation cotton reduces sampling noise.

[0045] The equipment enclosure includes a cabinet and a cabinet door, which are detachably connected to the cabinet. An operating port for installing the cabinet door is provided on the cabinet; the operating port faces the sample bottle 2 and the sampling liquid bottle 3. A waterproof connector 16 for connecting the power cord is installed on the cabinet. A display screen 17 is installed inside the equipment enclosure, facing the cabinet door. The display screen is connected to a controller located inside the equipment enclosure, and the controller is connected to a first pressure sensor 61, a second pressure sensor 71, and sensor 5.

[0046] Sensor 5 is a fiber optic sensing head. Sampling cup 1 is a transparent cup. The light emitted by the light source of the fiber optic sensing head, reflected back to the photodetector after passing through the liquid surface, differs from the light signal detected by the photodetector after the light emitted by the light source of the fiber optic sensing head passes through the wall of sampling cup 1. The processor senses whether the liquid surface is below the fiber optic sensing head; once the liquid surface is below the fiber optic sensing head, the processor controls the liquid in sampling cup 1 to be introduced into the sample cup.

[0047] A temperature and humidity sensor 15 is detachably mounted on the sampling cup cover 4. It is used to sense the temperature and humidity of the environment in which the sampling cup 1 is located.

[0048] The upper shelf 12 is an upper annular support plate. The first weighing platform 6 includes a first pressure sensor 61 and a first support bracket 62. The first pressure sensor 61 is detachably mounted on the upper annular support plate, and the force-bearing end of the first pressure sensor 61 is detachably mounted on the first support bracket 62. The outer edge of the first support bracket 62 is provided with at least three circumferentially arranged and upwardly extending limiting extensions. The lower shelf 13 is a lower annular support plate. The second weighing platform 7 includes a second pressure sensor 71 and a second support bracket 72. The second pressure sensor 71 is detachably mounted on the lower annular support plate, and the force-bearing end of the second pressure sensor 71 is detachably mounted on the second support bracket 72. The outer edge of the second support bracket 72 is provided with at least three circumferentially arranged and upwardly extending limiting extensions.

[0049] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A gravity-sensing bioaerosol sampler comprising a sampling cup, a sample bottle and a sampling liquid bottle, the bottom of the sampling cup is connected to the sample bottle through a liquid discharge channel, and the sampling cup is connected to the sampling liquid bottle through a liquid supplement channel, characterized in that, Further include a device cabinet, the device cabinet is provided with upper and lower setting upper and lower setting plate; The upper side of the upper setting plate is provided with a first weighing platform, and the first weighing platform is used for placing the sample bottle; The upper side of the lower setting plate is provided with a second weighing platform, and the second weighing platform is used for placing the sampling liquid bottle; The top of the device cabinet is provided with a sampling cup cover, the sampling cup is installed on the sampling cup cover, and a sensor for facing the sampling cup and sensing the liquid quantity in the sampling cup is installed on the sampling cup cover; The top of the device cabinet is provided with a louver box, and the louver box is arranged outside the sampling cup and the sampling cup cover.

2. A gravity-sensing bioaerosol sampler according to claim 1, wherein: The sampling cup is provided with an air inlet and an air outlet, and the air outlet is connected with a fan through an exhaust channel. The exhaust channel is located in the sampling cup cover. The top of the device cabinet is provided with the fan, and the top of the device cabinet is provided with an LED lamp, which is located in the periphery of the fan.

3. A gravity-sensing bioaerosol sampler according to claim 1, wherein: The device cabinet includes a cabinet body and a cabinet door, and the cabinet door is detachably connected with the cabinet body. An operation port for installing the cabinet door is formed in the cabinet body. The operation port is opposite to the sample bottle and the sampling liquid bottle.

4. The gravity-sensing bioaerosol sampler of claim 1, wherein: The sensor is an optical fiber sensing head.

5. The gravity-sensing bioaerosol sampler of claim 1, wherein: The top of the device cabinet is detachably connected with a support column, the support column is detachably connected with a ring-shaped support disc, and the ring-shaped support disc is detachably connected with the louver box.

6. A gravity-sensing bioaerosol sampler according to claim 1, wherein: A temperature and humidity sensor is detachably installed on the sampling cup cover.

7. The gravity-sensing bioaerosol sampler of claim 1, wherein: The upper setting plate is an upper ring-shaped support plate, the first weighing platform includes a first pressure sensor and a first support bracket, the first pressure sensor is detachably installed on the upper ring-shaped support plate, and the force receiving end of the first pressure sensor is detachably installed with the first support bracket, and the outer edge of the first support bracket is provided with at least three circumferentially arranged and upwardly extending limiting extensions. The lower setting plate is a lower ring-shaped support plate, the second weighing platform includes a second pressure sensor and a second support bracket, the second pressure sensor is detachably installed on the lower ring-shaped support plate, and the force receiving end of the second pressure sensor is detachably installed with the second support bracket, and the outer edge of the second support bracket is provided with at least three circumferentially arranged and upwardly extending limiting extensions.

8. The gravity-sensing bioaerosol sampler of claim 1, wherein: The top of the louver box is closed, the louver box includes a vertically arranged mounting column, the mounting column is connected with ring-shaped blades arranged from top to bottom, there is a ventilation gap between adjacent ring-shaped blades, and the outer diameter of the ring-shaped blades increases from top to bottom.

9. A gravity-sensing bioaerosol sampler according to claim 3, wherein: A display screen is installed in the device cabinet, and the display screen is opposite to the cabinet door.

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