An aerosol collection device with a self-cleaning function for the sampling port

Abstract

The present invention discloses an aerosol collection device with a self-cleaning function for sampling ports, which relates to the technical field of aerosol collection. The collection device includes a housing, a centrifugal mechanism for separating aerosol from the air, and a cup-changing mechanism for replacing the carrier cup. The centrifugal mechanism and the cup-changing mechanism are both installed inside the housing. The cup-changing mechanism is located below the centrifugal mechanism. The cup-changing mechanism pushes an empty carrier cup into the centrifugal mechanism or takes out the carrier cup carrying the aerosol from the centrifugal mechanism. The centrifugal mechanism separates the aerosol from the air by centrifugal separation and makes the aerosol fall into the carrier cup, thereby realizing the collection of the aerosol. In the present invention, the centrifugal mechanism is set as a split type. When the centrifugal mechanism is used in cooperation with the cup-changing mechanism in the housing, continuous multiple aerosol collections can be realized. The centrifugal mechanism can be taken out of the housing and used alone. When used alone, single aerosol collection can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of aerosol collection, and specifically, it is an aerosol collection device with a self-cleaning function for the sampling port. Background Art

[0002] Bioaerosols refer to tiny particles suspended in the air, which are composed of substances of biological origin, such as bacteria, viruses, fungi, pollen, and plant particles, etc. Bioaerosols can exist in the air and be inhaled by humans and animals through breathing, having potential impacts on health. The collection and analysis of aerosols are core links in environmental monitoring, public health, and the prevention and control of infectious diseases, and they can have significant impacts on climate change, human health, and the ecological environment.

[0003] In complex scenarios such as medical facilities, industrial environments, or disaster sites, the aerosol concentration is high and the composition is complex. Traditional sampling devices require frequent manual cleaning of the sampling port, which not only increases the maintenance cost but also may introduce secondary pollution due to improper operation, thus leading to inaccurate analysis. Therefore, in complex environments or high-pollution scenarios, the performance limitations of traditional devices are more significant. Summary of the Invention

[0004] The purpose of the present invention is to provide an aerosol collection device with a self-cleaning function for the sampling port to solve the problems raised in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An aerosol collection device with a self-cleaning function for the sampling port includes a touch screen for controlling the overall operation of the aerosol collection device, and also includes a machine shell. Universal wheels (not shown in the figure) are installed below the machine shell, and the touch screen is installed above the machine shell. A centrifugal mechanism for separating aerosols and air, and a cup-changing mechanism for replacing the carrier cup are arranged inside the machine shell. The cup-changing mechanism is located below the centrifugal mechanism. The centrifugal mechanism is detachably connected to the machine shell. The centrifugal mechanism separates aerosols from the air by centrifugation and makes the aerosols fall into the carrier cup. The centrifugal mechanism separates aerosols from the air by centrifugal separation and makes the aerosols fall into the carrier cup to achieve the collection of aerosols. In the present invention, the centrifugal mechanism is set to be split. When the centrifugal mechanism is used in cooperation with the cup-changing mechanism in the machine shell, continuous multiple aerosol collections can be achieved. The centrifugal mechanism can be taken out of the machine shell and used alone. When used alone, single aerosol collection can be achieved. When the aerosol collection device is not suitable for use in the collection space or there is no need to move the aerosol collection device, the centrifugal mechanism can be taken out of the machine shell for use, improving the overall practicality and application range of the aerosol collection device.

[0006] On one side of the casing, a protective box is provided. Inside the protective box, an inflow pipe with an upwardly inclined air inlet is installed. The output end of the inflow pipe is communicated with the input end of the centrifugal mechanism. When the lid of the protective box is closed, it is in an inclined state. Inside the casing, a partition is installed. The centrifugal mechanism is installed on the partition. The cup-changing mechanism is located below the partition. A through hole for the carrier cup to pass through is provided on the partition. When collecting aerosol, the lid of the protective box is opened, and the centrifugal mechanism starts to work. The inflow pipe extracts the air obliquely above, facilitating the air to carry the aerosol and flow into the inflow pipe, and improving the efficiency of the aerosol flow entering the inflow pipe.

[0007] A support plate with a "D"-shaped frame structure is installed on the partition. The support plate is located outside the through hole.

[0008] The centrifugal mechanism includes a bottom plate detachably installed on the support plate. On the bottom plate, a "C"-shaped sleeve and multiple support columns are installed. Above the multiple support columns, a carrier plate is jointly installed. Above the sleeve, a centrifugal box is installed. A gas pump is installed on the carrier plate. Inside the centrifugal box, an annular intake cavity and a straight-through separation cavity are provided. Between the intake cavity and the separation cavity, multiple swirl grooves are provided that open tangentially along the intake cavity. The centrifugal box is communicated with the inflow pipe through a pipe connecting the intake cavity. Inside the centrifugal box, a discharge pipe is provided at the middle position of the separation cavity. The discharge pipe is communicated with the input port of the gas pump through a transmission pipe. The cup-changing mechanism docks the cup mouth of the carrier cup with the cavity mouth of the separation cavity. The support plate is connected to the bottom plate, and the support plate and the bottom plate are connected through a buckle structure to achieve quick installation and disassembly, facilitating the quick disassembly and assembly of the centrifugal mechanism.

[0009] Below the centrifugal box, a cup cylinder is installed outside the cavity mouth of the separation cavity. Inside the cup cylinder, an annular airbag and a water bag are sequentially arranged from top to bottom. The inner diameters of the airbag and the water bag in the contracted state are larger than the diameter of the cavity mouth of the separation cavity. An expansion pump is provided on the bottom plate. The expansion pump is communicated with the inside of the airbag through a pipe.

[0010] After the carrier cup is pushed into the cup cylinder, the expansion pump works and causes the airbag to expand, fixing the carrier cup in the cup cylinder through the expanded airbag and achieving a sealing effect between the carrier cup and the cup cylinder.

[0011] When the carrier cup needs to be replaced, the expansion pump causes the airbag to deflate and contract, enabling the cup-changing mechanism to take out the carrier cup from the cup cylinder.

[0012] A water tank is provided on the bottom plate. Inside the water tank, a chamber one and a chamber two are provided. Water is stored in chamber one. Small water pumps are installed in both chamber one and chamber two.

[0013] An annular fluid chamber is provided inside the lower end of the cup cylinder. The water bag is located inside the fluid chamber and communicates with the fluid chamber. A partition plate and a heating coil are provided in the fluid chamber. Two fluid pipes communicating with the fluid chamber are provided outside the cup cylinder. The two fluid pipes are located on both sides of the partition plate. The two fluid pipes connect the fluid chamber with chamber one and chamber two. The inlet of one fluid pipe and the outlet of the other fluid pipe are both higher than the fluid chamber. The water pump in chamber one is connected to the fluid pipe. The inner diameter of the fluid pipe connecting chamber one is larger than that of the fluid pipe connecting chamber two.

[0014] A cleaning box is provided on the carrier plate. The cleaning box is connected in series on the transmission pipe. The height of the inlet on the cleaning box is lower than that of the outlet. Chamber two communicates with the bottom of the cleaning box through a pipeline. The pipeline connecting the cleaning box is connected to the water pump in chamber two;

[0015] A convex converging chamber is provided in the middle above the centrifugal box. The converging chamber communicates with the outlet of the discharge pipe and the inlet of the transmission pipe. The end of the discharge pipe away from the converging chamber is flared. A one-way plate is slidably installed outside the discharge pipe. The one-way plate is tightly connected to both the outer wall of the discharge pipe and the inner wall of the centrifugal box. A return spring (not shown in the figure) is provided between the one-way plate and the upper end face inside the centrifugal box. An air hole communicating the separation chamber and the converging chamber is provided on the centrifugal box. A one-way valve (not shown in the figure) is installed at the outlet of the discharge pipe;

[0016] When the one-way plate slides to the flared end of the discharge pipe, the return spring is stretched, and the upper end face of the one-way plate is flush with the lower end face of the notch of the swirl groove;

[0017] When the return spring is in its initial state, the one-way plate is located above the notch of the swirl groove. When the air pump works and extracts the air in the converging chamber through the cleaning box and the transmission pipe, and extracts the air above the one-way plate through the air hole, under the action of air pressure, the one-way plate will move towards the converging chamber, compressing the return spring. Air enters the intake chamber from the inflow pipe and tangentially flows into the separation chamber through the swirl groove. The air forms a swirl in the separation chamber and flows towards the carrier cup along the inner wall of the separation chamber. After the swirl contacts the liquid medium in the carrier cup, the aerosol enters the liquid medium along the inner wall of the carrier cup, while the swirl rotates upward from the middle of the carrier cup into the discharge pipe and flows to the air pump through the converging chamber, the transmission pipe and the cleaning box.

[0018] After the cup holder is pushed into the cup cylinder by the cup replacement mechanism and fixed by the airbag, the water in chamber one is sent into the fluid chamber by the water pump through the fluid pipe. When the water flows into the fluid chamber, the heating coil is powered on and generates heat. The water passes through the heating coil and takes on heat. The water gradually fills the entire fluid chamber. Due to the different cross-sectional areas when the water flows in and out, part of the water will flow into the water bag, causing the water bag to expand to a certain extent. As a result, the water with temperature gets closer to the cup holder, and the cup holder is temperature-controlled by the water with temperature, so that the liquid medium in the cup holder is within a certain temperature range. When the water fills the water bag, the fluid chamber, and the fluid pipe connecting to chamber two, the water with temperature slowly flows into chamber two and is stored. The water flows from chamber one into the fluid chamber, and after heating, it gradually flows into chamber two for storage. When the aerosol collection is completed and the centrifuge box and the inflow pipe need to be cleaned, after the cup holder is removed from the cup cylinder, the air pump starts to pump air in the reverse direction. The air flows through the transmission pipe, the cleaning box, and the transmission pipe into the convergence chamber. Since a one-way valve is installed at the outlet of the discharge pipe, the air can only flow out of the convergence chamber through the air holes. The air presses the one-way plate and stretches the return spring, causing the one-way plate to gradually cross over the notch of the swirl groove. During the air pumping process, the water with temperature in chamber two is pumped into the cleaning box by the water pump. The air presses the water in the cleaning box, causing the water to flow into the convergence chamber mixed with the air, and then through the swirl groove into the intake chamber, and finally flow out from the inflow pipe. After the water in chamber two is pumped for a certain period of time, the pumping will stop, and the air will continue to be pumped. Through the flow of air and the heat of the water, the evaporation of water in the transmission pipe, the convergence chamber, the separation chamber, the intake chamber, and the inflow pipe is accelerated, so that the inflow pipe and the centrifuge box can be quickly dried after being cleaned.

[0019] A medium box is installed on the partition board, and the medium box pumps the liquid medium into the empty cup holder through a pump and a pipeline;

[0020] The cup-changing mechanism includes a substrate with openings at four corners and guide rods slidably installed in the openings. The guide rods are connected to the inner end face of the housing. A lifting cylinder is installed inside the housing below the substrate. A slip ring and a driving disk are installed on the substrate. The driving disk is located inside the slip ring. A rotating disk is slidably installed on the slip ring. The input end of the driving disk is connected to the rotating disk. A placement plate is connected above the rotating disk through a support column. A plurality of cup slots are provided on the placement plate. A cup holder is provided outside the cup slots on the placement plate. A plurality of cup-supporting cylinders are provided on the rotating disk at positions corresponding to each cup holder. The piston rods of the cup-supporting cylinders penetrate through the placement plate and are connected to the cup holders. During the rotation of the placement plate driven by the driving disk, a certain amount of liquid medium is sent into the empty cups by the medium tank through a pump and a pipeline. The loaded cup is placed in the cup slot, and the step at the opening of the loaded cup falls on the cup holder. When it is necessary to push the loaded cup in, the cup-supporting cylinders work, and the loaded cup is sent into the cup cylinder by using the cup holder, and the opening of the loaded cup is docked with the orifice of the separation chamber. Before the piston rods of the cup-supporting cylinders are retracted, the airbag gradually expands to realize the extrusion and fixation of the loaded cup. During the expansion of the airbag, the loaded cup is gradually fixed in the cup cylinder by the airbag, and the piston rods of the cup-supporting cylinders are gradually retracted. The driving disk drives the placement plate to rotate through the rotating disk to change the position of the loaded cup.

[0021] The loaded cup is of a conical structure, and a ring-shaped step is provided on the outer side of the opening of the loaded cup.

[0022] The housing is provided with a front door and a side door. Through the front door, it is convenient to put the loaded cup into the cup-changing mechanism or take it out of the cup-changing mechanism. Through the side door, it is convenient to install the centrifugal mechanism on the support plate or remove it from the support plate.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The centrifugal mechanism separates the aerosol from the air by centrifugal separation and makes the aerosol fall into the loaded cup to realize the collection of the aerosol. In the present invention, the centrifugal mechanism is set as a split type. When the centrifugal mechanism is used in cooperation with the cup-changing mechanism in the housing, continuous multiple aerosol collections can be realized. The centrifugal mechanism can be taken out of the housing and used alone. When used alone, single aerosol collection can be realized. When the aerosol collection device is not suitable for use in the collection space or there is no need to move the aerosol collection device, the centrifugal mechanism can be taken out of the housing for use, which improves the overall practicability and application range of the aerosol collection device.

[0025] 2. The heating coil is energized to generate heat. Water passes through the heating coil and carries the heat. The water bag expands and makes the water with temperature further approach the loaded cup. The loaded cup is temperature-controlled by using the water with temperature, so that the liquid medium in the loaded cup is within a certain temperature range, which prolongs the survival time of bacteria, viruses and microorganisms in the aerosol, prevents the collected sample from being inactivated, and is beneficial to subsequent aerosol detection.

[0026] 3. To avoid aerosol cross - contamination or improve cleaning and collection efficiency, after the collection is completed, the centrifugal box and the inflow pipe are cleaned by a water pump. During cleaning, water with a certain temperature is used to clean the centrifugal box and the inflow pipe, and at the same time, the temperature of the water is used to accelerate the evaporation of the water, so that the centrifugal box and the inflow pipe can be quickly dried after cleaning. Brief Description of the Drawings

[0027] Figure 1 is the three - dimensional view of the overall structure of the present invention Figure 1 ;

[0028] Figure 2 is the three - dimensional view of the overall structure of the present invention Figure 2 (view of the opened state of the protective box cover);

[0029] Figure 3 is the distribution diagram of the positions of the centrifugal mechanism and the cup - changing mechanism of the present invention in the housing;

[0030] Figure 4 is the rear - view exploded view of the connection between the centrifugal mechanism and the support plate of the present invention;

[0031] Figure 5 is the exploded view of the centrifugal mechanism of the present invention;

[0032] Figure 6 is the front - view half - sectional view of the centrifugal mechanism of the present invention;

[0033] Figure 7 is the exploded view between the cup - changing mechanism and the cup carrier of the present invention;

[0034] Figure 8 is the exploded view of the cup - changing mechanism of the present invention.

[0035] In the figures: 1. Housing; 2. Front door; 3. Side door; 4. Protective box; 5. Touch screen; 6. Centrifugal mechanism; 61. Bottom plate; 62. Sleeve; 63. Centrifugal box; 64. Air pump; 65. Cleaning box; 66. Transmission pipe; 67. Water tank; 68. Expansion pump; 69. Carrier plate; 610. One - way plate; 611. Cup cylinder; 612. Air bag; 613. Water bag; 614. Fluid pipe; 615. Fluid chamber; 7. Inflow pipe; 8. Cup - changing mechanism; 81. Substrate; 82. Guide rod; 83. Lifting cylinder; 84. Rotating disk; 85. Placing plate; 86. Cup holder; 87. Cup - supporting cylinder; 88. Slip ring; 89. Driving disk; 9. Partition; 10. Medium box; 11. Support plate; 12. Cup carrier. Detailed Embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment: As Figure 1 - Figure 8 shown, the present invention provides a technical solution, an aerosol collection device with a self-cleaning function for a sampling port, including a housing 1 and a touch screen 5. The touch screen 5 is used to control the overall operation of the aerosol collection device. The touch screen 5 is installed above the housing 1. Universal wheels are installed below the housing 1. A centrifugal mechanism 6 for separating aerosol and air and a cup-changing mechanism 8 for replacing the carrier cup 12 are arranged inside the housing 1. The cup-changing mechanism 8 is located below the centrifugal mechanism 6. The centrifugal mechanism 6 is detachably connected to the housing 1. The centrifugal mechanism 6 separates the aerosol from the air by centrifugation, so that the aerosol falls into the carrier cup 12.

[0038] The carrier cup 12 is of a conical structure, and a ring-shaped step is arranged on the outer side of the opening of the carrier cup 12.

[0039] A front door 2 and a side door 3 are arranged on the housing 1. Through the front door 2, it is convenient to put the carrier cup 12 into the cup-changing mechanism 8 or take it out from the cup-changing mechanism 8. Through the side door 3, it is convenient to install the centrifugal mechanism 6 on the support plate 11 or remove it from the support plate 11.

[0040] A protection box 4 is arranged on one side of the housing 1. An inflow pipe 7 with an upwardly inclined air inlet is installed inside the protection box 4. The output end of the inflow pipe 7 is communicated with the input end of the centrifugal mechanism 6. When the lid of the protection box 4 is closed, it is in an inclined state;

[0041] A partition 9 is installed inside the housing 1. The centrifugal mechanism 6 is installed on the partition 9. The cup-changing mechanism 8 is located below the partition 9. A through hole for the carrier cup 12 to pass through is arranged on the partition 9. A support plate 11 in the shape of a "D"-shaped frame structure is installed on the partition 9, and the support plate 11 is located outside the through hole.

[0042] A medium box 10 is installed on the partition 9. The medium box 10 pumps a liquid medium into the empty carrier cup 12 through a pump and a pipeline.

[0043] The centrifugal mechanism 6 includes a bottom plate 61 detachably mounted on the support plate 11. On the bottom plate 61, a "C"-shaped housing 62 and multiple support columns are installed. Above the multiple support columns, a carrier plate 69 is commonly installed. Above the housing 62, a centrifugal chamber 63 is installed. On the carrier plate 69, an air pump 64 is installed. Inside the centrifugal chamber 63, an annular air inlet chamber and a straight cylinder separation chamber are provided. Between the air inlet chamber and the separation chamber, multiple swirl grooves are provided which are opened tangentially to the air inlet chamber. The centrifugal chamber 63 is connected to the inflow pipe 7 through a pipe communicating with the air inlet chamber. Inside the centrifugal chamber 63, a discharge pipe is provided at the middle position of the separation chamber. The discharge pipe is connected to the input port of the air pump 64 through a transmission pipe 66. The cup changing mechanism 8 docks the cup mouth of the cup carrier 12 with the chamber opening of the separation chamber. The support plate 11 is connected to the bottom plate 61. The support plate 11 and the bottom plate 61 are connected through a snap structure to achieve quick installation and disassembly, facilitating the quick removal and installation of the centrifugal mechanism 6.

[0044] Below the centrifugal chamber 63, a cup cylinder 611 is installed outside the chamber opening of the separation chamber. Inside the cup cylinder 611, an annular airbag 612 and a water bag 613 are sequentially arranged from top to bottom. The inner diameters of the airbag 612 and the water bag 613 in the contracted state are larger than the diameter of the chamber opening of the separation chamber. On the bottom plate 61, an expansion pump 68 is provided. The expansion pump 68 is connected to the inside of the airbag 612 through a pipe;

[0045] After the cup carrier 12 is pushed into the cup cylinder 611, the expansion pump 68 works to inflate the airbag 612. The inflated airbag 612 fixes the cup carrier 12 in the cup cylinder 611 and achieves a sealing effect between the cup carrier 12 and the cup cylinder 611;

[0046] When the cup carrier 12 needs to be replaced, the expansion pump 68 deflates and contracts the airbag 612, so that the cup carrier 12 is taken out of the cup cylinder 611 by the cup changing mechanism 8.

[0047] On the bottom plate 61, a water tank 67 is provided. Inside the water tank 67, a first chamber and a second chamber are provided. Water is stored in the first chamber. Small water pumps are installed in both the first chamber and the second chamber;

[0048] Inside the lower end of the cup cylinder 611, an annular fluid chamber 615 is provided. The water bag 613 is located inside the fluid chamber 615 and is connected to the fluid chamber 615. In the fluid chamber 615, a partition plate and a heating coil are provided. Outside the cup cylinder 611, two fluid pipes 614 communicating with the fluid chamber 615 are provided. The two fluid pipes 614 are located on both sides of the partition plate. The two fluid pipes 614 connect the fluid chamber 615 with the first chamber and the second chamber. The inlet of one fluid pipe 614 and the outlet of the other fluid pipe 614 are both higher than the fluid chamber 615. The water pump in the first chamber is connected to the fluid pipe 614. The inner diameter of the fluid pipe 614 connecting the first chamber is larger than the inner diameter of the fluid pipe 614 connecting the second chamber.

[0049] A cleaning box 65 is provided on the carrier board 69. The cleaning box 65 is connected in series to the transfer pipe 66. The height of the inlet on the cleaning box 65 is lower than that of the outlet. The second chamber is connected to the bottom of the cleaning box 65 through a pipeline. The pipeline connecting the cleaning box 65 is connected to the water pump in the second chamber;

[0050] In the middle above the centrifugal box 63, a convex converging chamber is provided. The converging chamber is connected to the outlet of the discharge pipe and the inlet of the transfer pipe 66. The end of the discharge pipe away from the converging chamber is flared. A one-way plate 610 is slidably installed on the outside of the discharge pipe. The one-way plate 610 is tightly connected to both the outer wall of the discharge pipe and the inner wall of the centrifugal box 63. A resilient spring is provided between the one-way plate 610 and the upper end face inside the centrifugal box 63. An air hole connecting the separation chamber and the converging chamber is provided on the centrifugal box 63. A one-way valve is installed at the outlet of the discharge pipe;

[0051] When the one-way plate 610 slides to the flared end of the discharge pipe, the resilient spring is stretched, and the upper end face of the one-way plate 610 is flush with the lower end face of the swirl groove opening;

[0052] When the resilient spring is in its initial state, the one-way plate 610 is located above the swirl groove opening.

[0053] Water flows from the first chamber into the fluid chamber 615. After being heated, it gradually flows into the second chamber for storage.

[0054] The cup-changing mechanism 8 includes a substrate 81 with openings at four corners and guide rods 82 slidably installed in the openings. The guide rods 82 are connected to the inner end face of the housing 1. A lifting cylinder 83 is installed inside the housing 1 below the substrate 81. A slip ring 88 and a driving disk 89 are installed on the substrate 81. The driving disk 89 is located inside the slip ring 88. A rotating disk 84 is slidably installed on the slip ring 88. The input end of the driving disk 89 is connected to the rotating disk 84. Above the rotating disk 84, a placement plate 85 is connected through a support column. Multiple cup grooves are provided on the placement plate 85. Cup supports 86 are provided outside the cup grooves on the placement plate 85. At the position corresponding to each cup support 86 on the rotating disk 84, multiple cup-lifting cylinders 87 are provided. The piston rods of the cup-lifting cylinders 87 penetrate through the placement plate 85 and are connected to the cup supports 86. During the process of the driving disk 89 driving the placement plate 85 to rotate, a certain amount of liquid medium is sent into the empty cup 12 by the medium tank 10 through a pump and a pipeline. The loaded cup 12 is placed in the cup groove. The step at the opening of the loaded cup 12 rests on the cup support 86. When it is necessary to push the loaded cup 12 in, the cup-lifting cylinder 87 works. The loaded cup 12 is sent into the cup cylinder 611 by using the cup support 86, and the opening of the loaded cup 12 is docked with the opening of the separation chamber. Before the piston rod of the cup-lifting cylinder 87 is retracted, the airbag 612 gradually expands to realize the extrusion and fixation of the loaded cup 12. During the expansion process of the airbag 612, the loaded cup 12 is gradually fixed in the cup cylinder 611 by the airbag 612, and the piston rod of the cup-lifting cylinder 87 is gradually retracted.

[0055] Working principle of the present invention: Place the carrier cup 12 in the cup slot. The stepped platform at the opening of the carrier cup 12 lands on the cup holder 86. Move the aerosol collection device to the collection area, and start the centrifugal mechanism 6 and the cup changing mechanism 8 through the touch screen 5.

[0056] The driving disk 89 drives the placement plate 85 to rotate through the rotating disk 84. During the rotation process, the medium box 10 sends a certain amount of liquid medium into the empty carrier cup 12 through a pump and a pipeline. After the rotation is completed, the empty carrier cup 12 is located directly below the cup cylinder 611.

[0057] The cup supporting cylinder 87 works. The cup holder 86 is used to send the carrier cup 12 into the cup cylinder 611 and make the opening of the carrier cup 12 dock with the cavity opening of the separation chamber. Before the rod of the cup supporting cylinder 87 is retracted, the expansion pump 68 works and the airbag 612 expands. During the gradual expansion of the airbag 612, the carrier cup 12 is squeezed and fixed. During the expansion of the airbag 612, the carrier cup 12 is gradually fixed in the cup cylinder 611 by the airbag 612, and the rod of the cup supporting cylinder 87 is gradually retracted.

[0058] When the expansion pump 68 is damaged or the rod of the cup supporting cylinder 87 does not need to be retracted, the cup supporting cylinder 87 can be used to complete the work of fixing the carrier cup 12 in the cup cylinder 611.

[0059] After the carrier cup 12 is fixed by the airbag 612, the water in the first chamber is sent into the fluid chamber 615 by the water pump through the fluid pipe 614. When the water flows into the fluid chamber 615, the heating coil is powered on and generates heat. The water passes through the heating coil and carries the heat. The water gradually fills the entire fluid chamber 615. Due to the different cross-sectional areas when the water flows in and out, part of the water will flow into the water bag 613, causing the water bag 613 to expand to a certain extent. Further, the water with temperature gets closer to the carrier cup 12, and the carrier cup 12 is temperature-controlled by the water with temperature, so that the liquid medium in the carrier cup 12 is within a certain temperature range. When the water fills the water bag 613, the fluid chamber 615 and the fluid pipe 614 connecting the second chamber, the water with temperature slowly flows into the second chamber and is stored.

[0060] When starting the collection, the air pump 64 works and extracts the air in the converging chamber through the cleaning box 65 and the transmission pipe 66. When extracting the air above the one-way plate 610 through the air hole, under the action of the air pressure, the one-way plate 610 will move towards the converging chamber direction, compressing the return spring. The air enters the intake chamber from the inflow pipe 7 and tangentially flows into the separation chamber through the swirl groove. The air forms a swirl in the separation chamber and flows towards the carrier cup 12 along the inner wall of the separation chamber. After the swirl contacts the liquid medium in the carrier cup 12, the aerosol enters the liquid medium along the inner wall of the carrier cup 12, while the swirl rotates upward from the middle of the carrier cup 12 into the discharge pipe and flows to the air pump 64 from the converging chamber, the transmission pipe 66 and the cleaning box 65.

[0061] After the aerosol collection operation is completed, the expansion pump 68 operates to gradually deflate and contract the airbag 612. During the contraction of the airbag 612, the cylinder rod of the cup support cylinder 87 gradually extends until the airbag 612 finishes contracting, and the cup support cylinder 87 presses the cup support 86 against the step of the carrier cup 12 again.

[0062] When it is necessary to remove the carrier cup 12 from the cup cylinder 611, the cup support cylinder 87 retracts its cylinder rod, causing the carrier cup 12 to gradually move out of the cup cylinder 611 and finally fall into the cup slot.

[0063] After that, the drive disk 89 drives the placement plate 85 to rotate again to change the position of the carrier cup 12, so that the new empty carrier cup 12 is located below the cup cylinder 611.

[0064] When the aerosol collection is completed and it is necessary to clean the centrifuge box and the inflow pipe, after removing the carrier cup 12 from the cup cylinder 611, the air pump 64 starts to pump air in the reverse direction. The air flows through the transmission pipe 66, the cleaning box 65 and the transmission pipe 66 into the convergence chamber. Since a one-way valve is installed at the outlet of the discharge pipe, the air can only flow out of the convergence chamber from the air holes. The air presses the one-way plate 610 and stretches the return spring, causing the one-way plate 610 to gradually cross over the notch of the swirl groove. During the air pumping process, the water with temperature in chamber two is pumped into the cleaning box 65 by the water pump. The air presses the water in the cleaning box 65, causing the water to flow into the convergence chamber mixed with the air and flow into the intake chamber through the swirl groove, and finally flow out from the inflow pipe 7.

[0065] After the water in chamber two is pumped for a certain period of time, the pumping will stop, and the air will continue to be pumped. Through the flow of the air and the heat of the water, the evaporation of the water in the transmission pipe 66, the convergence chamber, the separation chamber, the intake chamber and the inflow pipe 7 is accelerated, so that the inflow pipe 7 and the centrifuge box 63 can be quickly dried after being cleaned.

[0066] When the cleaning is completed, under the pulling force of the return spring, the one-way plate 610 is pulled back to its original position by the return spring.

[0067] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An aerosol collection device with a self-cleaning function for the sampling port, comprising a touch screen (5), and the touch screen (5) is used to control the overall operation of the aerosol collection device, characterized in that: It also includes a machine case (1), and a touch screen (5) is installed above the machine case (1). Inside the machine case (1), a centrifugal mechanism (6) for separating aerosol and air, and a cup-changing mechanism (8) for replacing the carrier cup (12) are provided. The cup-changing mechanism (8) is located below the centrifugal mechanism (6). The centrifugal mechanism (6) is detachably connected to the machine case (1). The centrifugal mechanism (6) separates the aerosol from the air by centrifugation, so that the aerosol falls into the carrier cup (12). A partition plate (9) is installed inside the machine case (1). The centrifugal mechanism (6) includes a bottom plate (61) detachably installed on the partition plate (9). A centrifugal box (63) and an air pump (64) are installed on the bottom plate (61). The middle part of the centrifugal box (63) is communicated with the input port of the air pump (64) through a transmission pipe (66). A water tank (67) and a cleaning box (65) are arranged on the bottom plate (61). The cleaning box (65) is connected in series on the transmission pipe (66). When cleaning the centrifugal box (63), the water in the water tank (67) is pumped into the centrifugal box (63) after passing through the cleaning box (65) and the transmission pipe (66). A protective box (4) is arranged on one side of the machine case (1). An inflow pipe (7) with an upwardly inclined air port is installed inside the protective box (4). The output end of the inflow pipe (7) is communicated with the input end of the centrifugal mechanism (6). An annular air inlet cavity and a straight cylindrical separation cavity are arranged inside the centrifugal box (63). A plurality of swirl grooves are arranged tangentially along the air inlet cavity between the air inlet cavity and the separation cavity. The centrifugal box (63) is communicated with the inflow pipe (7) through a pipe communicating with the air inlet cavity. A discharge pipe is arranged in the middle position of the separation cavity inside the centrifugal box (63). The discharge pipe is communicated with the input port of the air pump (64) through a transmission pipe (66). The cup-changing mechanism (8) makes the cup mouth of the carrier cup (12) dock with the cavity mouth of the separation cavity. A convex converging chamber is arranged in the middle above the centrifugal box (63). The converging chamber is communicated with the outlet of the discharge pipe and the inlet of the transmission pipe (66). One end of the discharge pipe away from the converging chamber is flared. A one-way plate (610) is slidably installed outside the discharge pipe. The one-way plate (610) is tightly connected to both the outer wall of the discharge pipe and the inner wall of the centrifugal box (63). A return spring is arranged between the one-way plate (610) and the upper end surface inside the centrifugal box (63). An air hole communicating the separation cavity and the converging chamber is arranged on the centrifugal box (63). A one-way valve is installed at the outlet of the discharge pipe. When the one-way plate (610) slides to the flared end of the discharge pipe, the return spring is stretched, and the upper end surface of the one-way plate (610) is flush with the lower end surface of the swirl groove notch. When the return spring is in the initial state, the one-way plate (610) is located above the swirl groove notch.

2. The aerosol collection device with a self-cleaning function for sampling ports according to claim 1, characterized in that: When the lid of the protective box (4) is closed, it is in an inclined state. The cup-changing mechanism (8) is located below the partition plate (9). A through hole for the carrier cup (12) to pass through is arranged on the partition plate (9).

3. The aerosol collection device with a self-cleaning function for the sampling port according to claim 2, wherein: A support plate (11) with a "D"-shaped frame structure is installed on the partition plate (9). The support plate (11) is located outside the through hole. The bottom plate (61) is detachably mounted on the pallet (11). A "C"-shaped housing (62) and multiple support columns are mounted on the bottom plate (61). A carrier plate (69) is commonly mounted above the multiple support columns. A centrifugal box (63) is mounted above the housing (62). An air pump (64) is mounted on the carrier plate (69).

4. The aerosol collection device with a self-cleaning function for the sampling port according to claim 3, wherein: A cup cylinder (611) is mounted outside the cavity opening of the separation cavity below the centrifugal box (63). An annular airbag (612) and a water bag (613) are sequentially arranged in the cup cylinder (611) from top to bottom. The inner diameters of the airbag (612) and the water bag (613) in the contracted state are larger than the diameter of the cavity opening of the separation cavity. An expansion pump (68) is arranged on the bottom plate (61). The expansion pump (68) is communicated with the inside of the airbag (612) through a pipeline; After the carrier cup (12) is pushed into the cup cylinder (611), the expansion pump (68) works to inflate the airbag (612). The carrier cup (12) is fixed in the cup cylinder (611) through the inflated airbag (612), and a sealing effect between the carrier cup (12) and the cup cylinder (611) is achieved; When the carrier cup (12) needs to be replaced, the expansion pump (68) deflates and contracts the airbag (612), so that the carrier cup (12) is taken out of the cup cylinder (611) by the cup changing mechanism (8).

5. The aerosol collection device with a self-cleaning function for the sampling port according to claim 4, wherein: A chamber one and a chamber two are arranged inside the water tank (67). Water is stored in the chamber one. Small water pumps are mounted inside both the chamber one and the chamber two; An annular fluid chamber (615) is arranged inside the lower end of the cup cylinder (611). The water bag (613) is located inside the fluid chamber (615) and is communicated with the fluid chamber (615). A partition plate and a heating coil are arranged in the fluid chamber (615). Two fluid pipes (614) communicating with the fluid chamber (615) are arranged outside the cup cylinder (611). The two fluid pipes (614) are located on both sides of the partition plate. The two fluid pipes (614) communicate the fluid chamber (615) with the chamber one and the chamber two. The inlet of one fluid pipe (614) and the outlet of the other fluid pipe (614) are both higher than the fluid chamber (615). The water pump in the chamber one is connected to the fluid pipe (614). The inner diameter of the fluid pipe (614) connecting the chamber one is larger than the inner diameter of the fluid pipe (614) connecting the chamber two.

6. The aerosol collection device with a self-cleaning function for the sampling port according to claim 5, wherein: A cleaning box (65) is arranged on the carrier plate (69). The height of the inlet on the cleaning box (65) is lower than the height of the outlet. The chamber two is communicated with the bottom of the cleaning box (65) through a pipeline. The pipeline communicating with the cleaning box (65) is connected to the water pump in the chamber two.

7. An aerosol collection device with a self-cleaning function for sampling ports according to claim 2, characterized in that: A medium box (10) is mounted on the partition plate (9). The medium box (10) pumps liquid medium into an empty carrier cup (12) through a pump and a pipeline; The cup-changing mechanism (8) includes a substrate (81) with openings at four corners and guide rods (82) slidably installed in the openings. The guide rods (82) are connected to the inner end face of the machine housing (1). A lifting cylinder (83) is installed inside the machine housing (1) below the substrate (81). A slip ring (88) and a driving disk (89) are installed on the substrate (81). The driving disk (89) is located inside the slip ring (88). A rotating disk (84) is slidably installed on the slip ring (88). The input end of the driving disk (89) is connected to the rotating disk (84). A placement plate (85) is connected above the rotating disk (84) through a support column. A plurality of cup grooves are provided on the placement plate (85). A cup holder (86) is provided outside the cup grooves on the placement plate (85). A plurality of cup-lifting cylinders (87) are provided on the rotating disk (84) corresponding to the positions of each cup holder (86). The piston rod of the cup-lifting cylinder (87) penetrates through the placement plate (85) and is connected to the cup holder (86).

8. The aerosol collection device with a self-cleaning function for the sampling port according to claim 1, characterized in that: The cup carrier (12) has a conical structure, and an annular stepped platform is provided on the outer side of the opening of the cup carrier (12).

9. The aerosol collection device with a self-cleaning function for the sampling port according to claim 1, characterized in that: A front door (2) and a side door (3) are provided on the machine housing (1). Through the front door (2), it is convenient to put the cup carrier (12) into the cup-changing mechanism (8) or take it out from the cup-changing mechanism (8). Through the side door (3), it is convenient to install the centrifugal mechanism (6) on the support plate (11) or remove it from the support plate (11).

Images