Biological aerosol intelligent sampler with detachable filtering module

Abstract

The biological aerosol intelligent sampler comprises the filtering module and a sampling assembly connected with the filtering module, the filtering module comprises a containing shell and a pressing plate, a mounting groove is formed in the containing shell, a filter and an ultraviolet lamp tube are arranged in the mounting groove, the ultraviolet lamp tube is arranged in the direction parallel to the airflow direction, and the filter is arranged in the mounting groove. The ultraviolet lamp tube is installed on the inner side of the installation groove, a first sealing ring is arranged between the filter and the installation groove, and a second sealing ring is arranged between the pressing plate and the containing shell. The accommodating shell is fixed on the mounting groove through a screw, the filter is sealed in the mounting groove, the first sealing ring and the second sealing ring are pressed, and air flow passes through the sampling assembly and then sequentially passes through the filter and the ultraviolet lamp tube to be filtered and sterilized. The whole filtering module is sealed through the first sealing ring and the second sealing ring, and the ultraviolet lamp tube is parallel to the air flow, so that the pressure loss can be reduced when the air flow is filtered.

Description

Technical Field

[0001] This invention relates to the field of sampling device technology, and in particular to a bioaerosol intelligent sampler with a detachable filter module. Background Technology

[0002] Bioaerosols are complex mixtures of biological particles such as microorganisms, cell debris, pollen, and fungal spores suspended in the air. Bioaerosols are infectious, lethal, and toxic, and can easily cause harm and affect human health and agricultural output. Bioaerosol samplers are an effective tool for detecting the concentration of bioaerosols in the environment.

[0003] Traditional samplers suffer from problems such as low acquisition efficiency. While some existing samplers can solve the problem of low acquisition efficiency, the filter module is easily contaminated during the sampling or filtering process. At the same time, pressure loss occurs during the filtering process, which reduces the filtration efficiency of the airflow.

[0004] In view of this, the present invention proposes a sampler that can reduce filtration pressure loss. Summary of the Invention

[0005] To address the problem of reduced filtration efficiency due to pressure loss during filtration, this invention proposes a bioaerosol intelligent sampler with a detachable filter module.

[0006] This invention is achieved through the following technical solution:

[0007] This invention proposes a bioaerosol intelligent sampler with a detachable filter module, comprising a filter module and a sampling component connected to the filter module. The filter module includes a housing and a pressure plate. An installation groove is provided inside the housing, and a filter and an ultraviolet lamp arranged parallel to the airflow direction are disposed in the installation groove. The ultraviolet lamp is installed inside the installation groove. A first sealing ring is provided between the filter and the installation groove, and a second sealing ring is provided between the pressure plate and the housing. The housing is fixed to the housing with screws, enclosing the filter in the installation groove and pressing the first and second sealing rings. After the airflow passes through the sampling component, it passes through the filter and the ultraviolet lamp in sequence to complete filtration and disinfection.

[0008] Furthermore, the sampling component includes an inlet port and an outlet port connected to the housing for airflow.

[0009] Furthermore, the sampling component also includes a vacuum pump and an outlet, with the outlet interface sequentially connected to the vacuum pump and the outlet.

[0010] Furthermore, a pressure sensor is installed inside the air outlet.

[0011] Furthermore, the sampling component also includes a pressure gauge and a flow meter, and the inlet interface is connected to the flow meter and the pressure gauge in sequence.

[0012] Furthermore, the sampling assembly also includes an air inlet and a check valve, wherein the air inlet is connected in sequence to the check valve and the pressure gauge.

[0013] Furthermore, the sampling assembly also includes a power module connected to the pressure sensor, the filter module, and the vacuum pump.

[0014] Furthermore, the inlet and outlet interfaces adopt 1 / 8 NPT threaded interfaces.

[0015] Furthermore, a third sealing ring is provided at the connection between the inlet end interface and the outlet end interface.

[0016] Furthermore, the filter is composed of a honeycomb activated carbon filter screen arranged along the airflow direction, an electrospun nanofiber layer, and a polytetrafluoroethylene composite filter membrane.

[0017] The beneficial effects of this invention are:

[0018] (1) The bioaerosol intelligent sampler with detachable filter module proposed in this invention integrates filter and ultraviolet lamp in filter module. The entire filter module is sealed by first sealing ring and second sealing ring. The ultraviolet lamp is set in parallel with the airflow, which can reduce pressure loss when filtering the airflow.

[0019] (2) The bioaerosol intelligent sampler with detachable filter module proposed in this invention integrates ultraviolet lamp and filter into a single module, which can realize integrated filtration, disinfection and sterilization, improve airflow processing efficiency and realize intelligent sampling.

[0020] (3) The filter module of the bioaerosol intelligent sampler with detachable filter module proposed in this invention adopts a 1 / 8 NPT threaded interface, which is compatible with various filters such as HEPA and ULPA, and can adapt to different filtration needs. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the filter module of the bioaerosol intelligent sampler with a detachable filter module according to the present invention.

[0022] Figure 2 This is a top view of the overall structure of the intelligent bioaerosol sampler with a detachable filter module according to the present invention.

[0023] Figure 3 This is a schematic diagram of the overall structure of the intelligent bioaerosol sampler with a detachable filter module according to the present invention.

[0024] In the diagram: 1. Air inlet; 2. Pressure gauge; 3. Check valve; 4. Power module; 5. Vacuum pump; 6. Flow meter; 7. Filter module; 71. Housing; 72. First sealing ring; 73. Second sealing ring; 74. Filter; 75. Pressure plate; 76. Screw; 77. Ultraviolet lamp.

[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0027] Please refer to Figures 1-3 This invention proposes a bioaerosol intelligent sampler with a detachable filter module 7, comprising a filter module 7 and a sampling component connected to the filter module 7. The filter module 7 includes a housing 71 and a pressure plate 75. An installation groove is provided inside the housing 71, and a filter 74 and an ultraviolet lamp 77 arranged parallel to the airflow direction are provided in the installation groove. The ultraviolet lamp 77 is installed inside the installation groove. A first sealing ring 72 is provided between the filter 74 and the installation groove, and a second sealing ring 73 is provided between the pressure plate 75 and the housing 71. The housing 71 is fixed to the housing 71 with screws 76, which seals the filter 74 in the installation groove and presses the first sealing ring 72 and the second sealing ring 73. After the airflow passes through the sampling component, it passes through the filter 74 and the ultraviolet lamp 77 in sequence to complete filtration and disinfection.

[0028] In a specific embodiment, the ultraviolet lamp 77 and the filter 74 are installed sequentially in the mounting groove. The pressure plate 75 seals the mounting groove, while the first sealing ring 72 seals the gap between the filter 74 and the inner wall of the mounting groove. The second sealing ring 73 further seals the gap between the pressure plate 75 and the housing 71. When the gas passes through the filter 74 for filtration, it first undergoes preliminary filtration through the filter 74, and then undergoes further disinfection and sterilization through the ultraviolet lamp 77. Finally, the gas is discharged from the filter 74. By installing the ultraviolet lamp 77 parallel to the airflow direction, the obstruction area can be reduced while reducing pressure loss. At the same time, it is also more convenient to replace the entire filter module 7.

[0029] Furthermore, the sampling assembly also includes an inlet port and an outlet port connected to the housing 71 for airflow in and out.

[0030] In a specific implementation, the inlet and outlet interfaces are used to connect other components of the sampler, and the filter module 7 is disassembled and replaced through the inlet and outlet interfaces.

[0031] Furthermore, the sampling assembly also includes a vacuum pump 5 and an outlet, with the outlet interface sequentially connected to the vacuum pump 5 and the outlet.

[0032] In a specific implementation, the air outlet is used to discharge the sampled airflow, the vacuum pump 5 is used to transport the airflow, the airflow filtered by the filter module 7 enters the vacuum pump 5 and is discharged from the air outlet, and the vacuum pump 5 can also control the pressure of the airflow to make the airflow tend to be stable.

[0033] Furthermore, a pressure sensor is installed inside the air outlet.

[0034] In a specific implementation, a pressure sensor is used to monitor the pressure of the exhaust gas flow in real time, and works with the vacuum pump 5 to control the gas flow stability.

[0035] Furthermore, the sampling component also includes a pressure gauge 2 and a flow meter 6, with the inlet interface connected to the flow meter 6 and the pressure gauge 2 in sequence.

[0036] In a specific implementation, pressure gauge 2 is used to monitor the pressure of the incoming airflow in real time, and flow meter 6 is used to monitor the flow rate of the airflow in real time.

[0037] Furthermore, the sampling assembly also includes an air inlet 1 and a check valve 3, with the air inlet 1 connected in sequence to the check valve 3 and the pressure gauge 2.

[0038] In a specific implementation, the various components between the sampling assembly and the filter module 7 are connected via pipes. A check valve 3 prevents backflow of air, and the air inlet 1 is used to introduce the gas to be detected. The gas enters through the air inlet 1, passes through the pressure gauge 2 and the flow meter 6 to test its pressure and flow rate, and then enters the filter module 7 for filtration and ultraviolet disinfection.

[0039] Furthermore, the sampling assembly also includes a power module 4, which is connected to a pressure sensor, a filter module 7, and a vacuum pump 5.

[0040] In a specific implementation, the power module 4 includes a power supply and a PCB board. The PCB board is located at the bottom of the power supply. The PCB board connects to and controls various components, controlling the operation of the entire sampler. The power supply provides power to various components.

[0041] Furthermore, the inlet and outlet interfaces adopt 1 / 8 NPT threaded interfaces.

[0042] In specific implementations, this threaded interface can be used to achieve compatibility with HEPA and ULPA filters, thus adapting to different filtration requirements.

[0043] Furthermore, a third sealing ring is provided at the connection between the inlet and outlet interfaces.

[0044] In a specific implementation, the third sealing ring is used to ensure the airtightness of the inlet and outlet interfaces, and to avoid sampling errors caused by air leakage.

[0045] Furthermore, the filter 74 is composed of a honeycomb activated carbon filter screen arranged along the airflow direction, an electrospun nanofiber layer, and a polytetrafluoroethylene composite filter membrane.

[0046] In a specific embodiment, the polytetrafluoroethylene composite filter membrane experiences a pressure drop greater than 0.8 kPa at a flow rate of 8 L / min, and the filter 74 can maintain a flow rate of 25 L / min while achieving a residual efficiency of 0.3-10 μm particles greater than 99.97%.

[0047] Of course, the present invention may have many other embodiments. Based on this embodiment, other embodiments obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention.

Claims

1. A bioaerosol intelligent sampler with a detachable filter module, characterized in that, The device includes a filter module and a sampling assembly connected to the filter module. The filter module includes a housing and a pressure plate. The housing has an internal mounting groove, in which a filter and an ultraviolet lamp arranged parallel to the airflow direction are disposed. The ultraviolet lamp is installed inside the mounting groove. A first sealing ring is provided between the filter and the mounting groove, and a second sealing ring is provided between the pressure plate and the housing. The housing is fixed to the housing with screws to enclose the filter in the mounting groove and press the first and second sealing rings together. After the airflow passes through the sampling assembly, it passes through the filter and the ultraviolet lamp in sequence to complete the filtration and disinfection.

2. The bioaerosol intelligent sampler with a detachable filter module according to claim 1, characterized in that, The sampling component includes an inlet port and an outlet port connected to the housing for airflow.

3. The bioaerosol intelligent sampler with a detachable filter module according to claim 2, characterized in that, The sampling component also includes a vacuum pump and an outlet, with the outlet interface connected in sequence to the vacuum pump and the outlet.

4. The bioaerosol intelligent sampler with a detachable filter module according to claim 3, characterized in that, A pressure sensor is installed inside the air outlet.

5. The bioaerosol intelligent sampler with a detachable filter module according to claim 4, characterized in that, The sampling component also includes a pressure gauge and a flow meter, and the inlet interface is connected to the flow meter and the pressure gauge in sequence.

6. The bioaerosol intelligent sampler with a detachable filter module according to claim 1, characterized in that, The sampling assembly also includes an air inlet and a check valve, wherein the air inlet is connected in sequence to the check valve and the pressure gauge.

7. The bioaerosol intelligent sampler with a detachable filter module according to claim 5, characterized in that, The sampling assembly also includes a power module, which is connected to the pressure sensor, the filter module, and the vacuum pump.

8. The bioaerosol intelligent sampler with a detachable filter module according to claim 2, characterized in that, The inlet and outlet interfaces are 1 / 8 NPT threaded interfaces.

9. The bioaerosol intelligent sampler with a detachable filter module according to claim 2, characterized in that, A third sealing ring is provided at the connection between the inlet end interface and the outlet end interface.

10. The bioaerosol intelligent sampler with a detachable filter module according to claim 1, characterized in that, The filter is composed of a honeycomb activated carbon filter screen arranged along the airflow direction, an electrospun nanofiber layer, and a polytetrafluoroethylene composite filter membrane.

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