Aerosol collecting device with sampling port self-cleaning function

Abstract

The invention discloses an aerosol collection device with a sampling port self-cleaning function, and relates to the technical field of aerosol collection, the collection device comprises a machine shell, a centrifugal mechanism for separating aerosol from air and a cup replacing mechanism for replacing a carrying cup, the centrifugal mechanism and the cup replacing mechanism are both installed in the machine shell, the cup replacing mechanism is located below the centrifugal mechanism, and the cup replacing mechanism pushes the empty carrying cup into the centrifugal mechanism or takes the carrying cup carrying aerosol out of the centrifugal mechanism. The centrifugal mechanism separates the aerosol from the air in a centrifugal separation mode and enables the aerosol to fall into the carrying cup, and collection of the aerosol is achieved. According to the aerosol collection device, the centrifugal mechanism is arranged to be in a split type, when the centrifugal mechanism is used in cooperation with the cup changing mechanism in the machine shell, continuous multiple times of aerosol collection can be achieved, the centrifugal mechanism can be taken out of the machine shell and used independently, and single collection of aerosol can be achieved when the centrifugal mechanism is used independently.

Description

Technical Field

[0001] The invention relates to the technical field of aerosol collection, in particular to an aerosol collection device with a sampling port self-cleaning function. Background Art

[0002] Bioaerosols are tiny particles suspended in the air that are composed of biological substances, such as bacteria, viruses, fungi, pollen and plant particles. Bioaerosols can exist in the air and be inhaled by humans and animals through breathing, which has potential health effects. The collection and analysis of aerosols is a core part of environmental monitoring, public health and infectious disease prevention and control. They can have a significant impact on climate change, human health and the ecological environment.

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

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

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an aerosol collection device with a sampling port self-cleaning function, comprising a touch screen, the touch screen is used to control the overall operation of the aerosol collection device, and also includes a casing, a universal wheel (not shown in the figure) is installed below the casing, and the touch screen is installed above the casing. A centrifugal mechanism for separating aerosol and air and a cup-changing mechanism for replacing a cup are arranged inside the casing, and the cup-changing mechanism is located below the centrifugal mechanism. The centrifugal mechanism and the casing are connected in a separable manner. The centrifugal mechanism separates aerosol from air by centrifugation, so that the aerosol falls into the cup. The centrifugal mechanism separates aerosol from air by centrifugal separation, and makes the aerosol fall into the cup, so as to collect aerosol. In the present invention, the centrifugal mechanism is arranged in a split type. When the centrifugal mechanism is used in the casing in conjunction with the cup-changing mechanism, continuous and multiple aerosol collection can be realized. The centrifugal mechanism can be taken out of the casing and used alone, and a single collection of aerosol can be realized when used alone. 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 removed from the casing for use, thereby improving the overall practicality and applicability of the aerosol collection device.

[0006] A protection box is provided on one side of the housing, and an inlet pipe with an air port tilted upward is installed inside the protection box. The output end of the inlet pipe is connected to the input end of the centrifugal mechanism. The cover of the protection box is in a tilted state when it is closed. A partition is installed inside the housing, and the centrifugal mechanism is installed on the partition. The cup changing mechanism is located below the partition, and a through hole is provided on the partition for the cup to pass through. When collecting aerosols, the cover of the protection box is opened, the centrifugal mechanism starts to work, and the inlet pipe extracts air obliquely above, which facilitates the air to carry the aerosol to flow into the inlet pipe, thereby improving the efficiency of the aerosol flow entering the flow pipe.

[0007] A support plate with a "D"-shaped frame structure is installed on the partition, and the support plate is located outside the through hole; The centrifugal mechanism comprises a bottom plate detachably mounted on a support plate, a "C"-shaped casing and a plurality of support columns are mounted on the bottom plate, a carrier plate is mounted above the plurality of support columns, a centrifugal box is mounted above the casing, an air pump is mounted on the carrier plate, an annular air inlet chamber and a straight-cylindrical separation chamber are arranged inside the centrifugal box, a plurality of swirl grooves opened tangentially along the air inlet chamber are arranged between the air inlet chamber and the separation chamber, the centrifugal box is connected to the inlet pipe through a pipe connected to the air inlet chamber, a discharge pipe is arranged in the middle of the separation chamber inside the centrifugal box, the discharge pipe is connected to the input port of the air pump through a transmission pipe, and the cup changing mechanism docks the cup mouth of the carrier cup with the cavity mouth of the separation chamber. The support plate is connected to the bottom plate, and the support plate and the bottom plate are connected by a snap-fit ​​structure to achieve quick installation and disassembly, which is convenient for quick disassembly and quick installation of the centrifugal mechanism.

[0008] A cup barrel is installed at the outside of the cavity opening of the separation chamber below the centrifugal box, and an annular air bag and a water bag are arranged in sequence from top to bottom inside the cup barrel. The inner diameter of the air bag and the water bag in the contracted state is larger than the cavity opening diameter of the separation chamber. An expansion pump is arranged on the bottom plate, and the expansion pump is connected to the inside of the air bag through a pipeline; When the carrier cup is pushed into the cup barrel, the expansion pump works to expand the airbag, which fixes the carrier cup in the cup barrel and seals the carrier cup and the cup barrel. When the carrier cup needs to be replaced, the expansion pump causes the air bag to shrink and contract, so that the carrier cup is taken out of the cup tube by the cup changing mechanism.

[0009] A water tank is arranged on the bottom plate, and chamber 1 and chamber 2 are arranged inside the water tank. Water is stored in chamber 1, and small water pumps are installed inside chamber 1 and chamber 2. An annular fluid cabin is arranged inside the lower end of the cup tube, the water bag is located on the inner side of the fluid cabin and is connected with the fluid cabin, a partition plate and a heating coil are arranged in the fluid cabin, two fluid tubes connected with the fluid cabin are arranged outside the cup tube, the two fluid tubes are located on both sides of the partition plate, the two fluid tubes connect the fluid cabin with chamber one and chamber two, the inlet of one fluid tube and the outlet of the other fluid tube are both higher than the fluid cabin, the water pump in chamber one is connected with the fluid tube, and the inner diameter of the fluid tube connected with chamber one is larger than the inner diameter of the fluid tube connected with chamber two.

[0010] The carrier plate is provided with a cleaning box, the cleaning box is serially connected to the transmission pipe, the inlet height of the cleaning box is lower than the outlet height, the second chamber is connected to the bottom of the cleaning box through a pipeline, and the pipeline connected to the cleaning box is connected to the water pump in the second chamber; A raised converging chamber is provided in the middle of the upper part of the centrifugal box, and the converging chamber is connected 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 trumpet-shaped, and a one-way plate is slidably installed on the outer side of the discharge pipe. The one-way plate is tightly connected to the outer wall of the discharge pipe and the inner wall of the centrifugal box. A rebound spring (not shown in the figure) is provided between the one-way plate and the upper end surface of the centrifugal box. The centrifugal box is provided with an air hole connecting the separation chamber and the converging chamber, and a one-way valve (not shown in the figure) is installed at the outlet of the discharge pipe; When the one-way plate slides to the trumpet-shaped end of the discharge pipe, the rebound spring is stretched, and the upper end surface of the one-way plate is flush with the lower end surface of the swirl groove notch; When the rebound spring is in the initial state, the one-way plate is located above the notch of the swirl groove. The air pump works and extracts the air in the convergence chamber through the cleaning box and the transmission pipe. When the air above the one-way plate is extracted through the air hole, the one-way plate will move toward the convergence chamber under the operation of air pressure, causing the rebound spring to be compressed. The air enters the air inlet chamber from the inlet pipe and flows tangentially into the separation chamber through the swirl groove. The air forms a swirl in the separation chamber and flows along the inner wall of the separation chamber to the carrier cup. 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, and the swirl rotates upward from the middle of the carrier cup into the discharge pipe, and flows from the convergence chamber, the transmission pipe and the cleaning box to the air pump.

[0011] After the carrier cup is pushed into the cup tube by the cup changing mechanism and fixed by the airbag, the water in chamber one is pumped into the fluid cabin through the fluid pipe. When the water flows into the fluid cabin, the heating coil is energized and generates heat. The water passes through the heating coil and takes on the heat. The water gradually fills the entire fluid cabin. 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, thereby making the heated water closer to the carrier cup. The heated water is used to control the temperature of the carrier cup so that the liquid medium in the carrier cup is within a certain temperature range. When the water fills the water bag, the fluid cabin and the fluid pipe connecting chamber two, the heated water slowly flows into chamber two and is stored. The water flows from chamber one into the fluid cabin, and after being heated, it gradually flows into chamber two for storage. When the aerosol collection is completed, it is necessary to clean the centrifugal box and the inlet pipe. After the carrier cup is removed from the cup tube, the air pump starts to pump air in the reverse direction. The air flows into the gathering chamber through the transmission pipe, the cleaning box and the transmission pipe. Since a one-way valve is installed at the outlet of the discharge pipe, the air can only flow out of the gathering chamber from the air hole. The air squeezes the one-way plate and stretches the rebound spring, so that the one-way plate gradually crosses the swirl groove notch. During the pumping process, the warm water in chamber two is pumped into the cleaning box by the water pump. The air squeezes the water in the cleaning box, so that the water mixed with the air flows into the gathering chamber, and flows into the air inlet cavity through the swirl groove, and finally flows out from the inlet 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. The flow of air and the heat of water accelerate the evaporation of water in the transmission pipe, the gathering chamber, the separation chamber, the air inlet cavity and the inlet pipe, so that the inlet pipe and the centrifugal box can be quickly dried after being cleaned.

[0012] A medium box is installed on the partition, and the medium box pumps liquid medium into the empty carrier cup through a pump and a pipeline; The cup changing mechanism includes a base plate with four corner openings and a guide rod slidably installed in the openings, the guide rod is connected to the inner end face of the casing, a lifting cylinder is installed inside the casing below the base plate, a slip ring and a driving disk are installed on the base plate, 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, a plurality of cup grooves are arranged on the placement plate, a cup holder is arranged on the outside of the cup groove, a plurality of cup holding cylinders are arranged on the rotating disk corresponding to each cup holder, the cylinder rod of the cup holding cylinder passes through the placement plate and is connected to the cup holder. When the placement plate is driven to rotate by the driving disk, the medium box delivers a certain amount of liquid medium into the empty cup through a pump and a pipeline. The cup carrier is placed in the cup groove, and the step at the opening of the cup carrier falls on the cup holder. When the cup carrier needs to be pushed in, the cup holder cylinder works, and the cup carrier is sent into the cup barrel by the cup holder, and the opening of the cup carrier is docked with the cavity of the separation chamber. Before the cylinder rod of the cup holder cylinder is retracted, the airbag gradually expands to squeeze and fix the cup carrier. During the expansion of the airbag, the cup carrier is gradually fixed in the cup barrel by the airbag, and the cylinder rod of the cup holder cylinder is gradually retracted. The driving disk drives the placement plate to rotate through the rotating disk to change the position of the cup carrier.

[0013] The carrier cup is a conical structure, and an annular step is arranged outside the opening of the carrier cup.

[0014] The housing is provided with a front door and a side door. The front door is used to facilitate placing the cup into or taking it out of the cup changing mechanism, and the side door is used to facilitate installing the centrifugal mechanism on or removing it from the supporting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The centrifugal mechanism separates the aerosol from the air by centrifugal separation, and makes the aerosol fall into the carrier cup to realize the collection of the aerosol. In the present invention, the centrifugal mechanism is configured as a split type. When the centrifugal mechanism is used in conjunction with the cup-changing mechanism in the casing, continuous and multiple aerosol collection can be realized. The centrifugal mechanism can be taken out of the casing and used alone, and a single collection of aerosol can be realized when used alone. 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 casing for use, thereby improving the overall practicality and scope of application of the aerosol collection device.

[0016] 2. The heating coil is energized and generates heat. The water passes through the heating coil and takes on heat. The water bag expands and brings the heated water closer to the carrier cup. The heated water is used to control the temperature of the carrier cup, so that the liquid medium in the carrier cup is within a certain temperature range, which prolongs the survival time of bacteria, viruses and microorganisms in the aerosol, prevents the collected samples from being inactivated, and is beneficial to subsequent aerosol detection.

[0017] 3. To avoid aerosol cross contamination or improve cleaning efficiency and collection efficiency, after the collection is completed, the centrifuge box and the inlet pipe are cleaned by a water pump. When cleaning, the centrifuge box and the inlet pipe are cleaned with warm water, and the temperature of the water is used to accelerate the evaporation of the water, so that the centrifuge box and the inlet pipe can be quickly dried after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the present invention is three-dimensional Figure 1 ; Figure 2 The overall structure of the present invention is three-dimensional Figure 2 (Picture of the protective box with the cover opened); Figure 3 The figure is a position distribution diagram of the centrifugal mechanism and the cup changing mechanism of the present invention in the casing; Figure 4 It is a rear exploded view of the connection between the centrifugal mechanism and the support plate of the present invention; Figure 5 An exploded view of the centrifugal mechanism of the present invention; Figure 6 It is a front half-section view of the centrifugal mechanism of the present invention; Figure 7 It is an exploded view between the cup changing mechanism and the cup carrier of the present invention; Figure 8 It is an exploded view of the cup changing mechanism of the present invention.

[0019] In the figure: 1. casing; 2. front door; 3. side door; 4. protection box; 5. touch screen; 6. centrifugal mechanism; 61. bottom plate; 62. casing; 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 tube; 612. air bag; 613. water bag; 614. fluid pipe; 615. fluid cabin; 7. inlet pipe; 8. cup changing mechanism; 81. base plate; 82. guide rod; 83. lifting cylinder; 84. rotating disk; 85. placing plate; 86. cup holder; 87. cup holder cylinder; 88. slip ring; 89. driving disk; 9. partition; 10. medium box; 11. support plate; 12. cup carrier. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example: Figure 1 - Figure 8 As shown, the present invention provides a technical solution, an aerosol collection device with a self-cleaning function of a sampling port, comprising a casing 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 casing 1, a universal wheel is installed below the casing 1, a centrifugal mechanism 6 for separating aerosol and air, and a cup changing mechanism 8 for replacing a carrier cup 12 are arranged inside the casing 1, the cup changing mechanism 8 is located below the centrifugal mechanism 6, the centrifugal mechanism 6 and the casing 1 are detachably connected, the centrifugal mechanism 6 separates the aerosol from the air by centrifugation, and makes the aerosol fall into the carrier cup 12.

[0022] The support cup 12 is a conical structure, and an annular step is arranged outside the opening of the support cup 12 .

[0023] The housing 1 is provided with a front door 2 and a side door 3. The front door 2 facilitates the placement of the cup carrier 12 into or removal from the cup changing mechanism 8, and the side door 3 facilitates the installation of the centrifugal mechanism 6 on or removal from the support plate 11.

[0024] A protection box 4 is provided on one side of the casing 1, and an inlet pipe 7 with an air port tilted upward is installed inside the protection box 4. The output end of the inlet pipe 7 is connected to the input end of the centrifugal mechanism 6. The box cover of the protection box 4 is in a tilted state when it is closed. A partition 9 is installed inside the casing 1, the centrifugal mechanism 6 is installed on the partition 9, the cup changing mechanism 8 is located below the partition 9, the partition 9 is provided with a through hole for the cup 12 to pass through, and a support plate 11 with a "D"-shaped frame structure is installed on the partition 9, and the support plate 11 is located outside the through hole.

[0025] A medium box 10 is installed on the partition plate 9, and the medium box 10 pumps liquid medium into the empty carrier cup 12 through a pump and a pipeline.

[0026] The centrifugal mechanism 6 comprises a bottom plate 61 detachably mounted on the support plate 11, a "C"-shaped casing 62 and a plurality of supporting columns are mounted on the bottom plate 61, a carrier plate 69 is mounted above the plurality of supporting columns, a centrifugal box 63 is mounted above the casing 62, an air pump 64 is mounted on the carrier plate 69, an annular air inlet cavity and a straight-cylindrical separation cavity are arranged inside the centrifugal box 63, a plurality of swirl grooves opened tangentially along the air inlet cavity are arranged between the air inlet cavity and the separation cavity, the centrifugal box 63 is connected to the inlet pipe 7 through a pipe connected to the air inlet cavity, a discharge pipe is arranged inside the centrifugal box 63 at the middle position of the separation cavity, the discharge pipe is connected to the input port of the air pump 64 through a transmission pipe 66, and the cup changing mechanism 8 makes the cup mouth of the carrier cup 12 dock with the cavity mouth of the separation cavity. The support plate 11 is connected to the bottom plate 61, and the support plate 11 and the bottom plate 61 are connected by a snap-fit ​​structure to achieve quick installation and disassembly, and facilitate the quick disassembly and quick installation of the centrifugal mechanism 6.

[0027] A cup tube 611 is installed at the outside of the cavity opening of the separation cavity below the centrifugal box 63. An annular air bag 612 and a water bag 613 are arranged in sequence from top to bottom inside the cup tube 611. The inner diameters of the air bag 612 and the water bag 613 in the contracted state are larger than the cavity opening diameter of the separation cavity. An expansion pump 68 is arranged on the bottom plate 61. The expansion pump 68 is connected to the inside of the air bag 612 through a pipeline. When the carrier cup 12 is pushed into the cup tube 611, the expansion pump 68 works to expand the airbag 612, and the carrier cup 12 is fixed in the cup tube 611 through the expanded airbag 612, and a sealing effect is achieved between the carrier cup 12 and the cup tube 611; When the carrier cup 12 needs to be replaced, the expansion pump 68 causes the air bag 612 to shrink and dry, so that the carrier cup 12 is taken out of the cup tube 611 by the cup changing mechanism 8 .

[0028] A water tank 67 is disposed on the bottom plate 61. A chamber 1 and a chamber 2 are disposed inside the water tank 67. Water is stored in the chamber 1. Small water pumps are installed inside the chambers 1 and 2. An annular fluid cabin 615 is arranged inside the lower end of the cup tube 611, the water bag 613 is located on the inner side of the fluid cabin 615 and is connected with the fluid cabin 615, a partition plate and a heating coil are arranged in the fluid cabin 615, and two fluid tubes 614 connected with the fluid cabin 615 are arranged outside the cup tube 611, the two fluid tubes 614 are located on both sides of the partition plate, and the two fluid tubes 614 connect the fluid cabin 615 with chamber one and chamber two, the inlet of one fluid tube 614 and the outlet of the other fluid tube 614 are both higher than the fluid cabin 615, the water pump in chamber one is connected with the fluid tube 614, and the inner diameter of the fluid tube 614 connected with chamber one is larger than the inner diameter of the fluid tube 614 connected with chamber two.

[0029] A cleaning box 65 is provided on the carrier plate 69, and the cleaning box 65 is connected in series to the transmission pipe 66. The inlet height of the cleaning box 65 is lower than the outlet height. The second chamber is connected to the bottom of the cleaning box 65 through a pipeline, and the pipeline connected to the cleaning box 65 is connected to the water pump in the second chamber; A raised converging chamber is provided in the middle of the upper part of the centrifugal box 63, and the converging chamber is connected with the outlet of the discharge pipe and the inlet of the transmission pipe 66. The end of the discharge pipe away from the converging chamber is trumpet-shaped, and a one-way plate 610 is slidably installed on the outer side of the discharge pipe. The one-way plate 610 is tightly connected to the outer wall of the discharge pipe and the inner wall of the centrifugal box 63. A rebound spring is provided between the one-way plate 610 and the upper end surface of the centrifugal box 63. The centrifugal box 63 is provided with an air hole connecting the separation chamber and the converging chamber, and a one-way valve is installed at the outlet of the discharge pipe; When the one-way plate 610 slides to the trumpet-shaped end of the discharge pipe, the rebound 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 rebound spring is in the initial state, the one-way plate 610 is located above the notch of the swirl groove.

[0030] Water flows from chamber one into fluid chamber 615, and after being heated, gradually flows into chamber two for storage.

[0031] The cup changing mechanism 8 comprises a base plate 81 with four corner openings and a guide rod 82 slidably mounted in the openings. The guide rod 82 is connected to the inner end face of the housing 1. A lifting cylinder 83 is installed below the base plate 81 in the housing 1. A slip ring 88 and a driving disk 89 are installed on the base plate 81. The driving disk 89 is located inside the slip ring 88. A rotating disk 84 is slidably mounted 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. The placement plate 85 is provided with a plurality of cup grooves. The placement plate 85 is provided with a cup holder 86 on the outer side of the cup groove. A plurality of cup holder cylinders 87 are provided on the rotating disk 84 at positions corresponding to each cup holder 86. The cylinder rod of the cup holder cylinder 87 penetrates the placement plate 85 and is connected to the cup holder 86. When the driving disk 89 drives the placement plate 85 to rotate, the medium box 10 delivers a certain amount of liquid medium into the empty cup 12 through a pump and a pipeline. The carrier cup 12 is placed in the cup groove, and the step at the opening of the carrier cup 12 falls on the cup holder 86. When the carrier cup 12 needs to be pushed in, the cup holder cylinder 87 works, and the carrier cup 12 is sent into the cup tube 611 by the cup holder 86, and the opening of the carrier cup 12 is docked with the cavity mouth of the separation chamber. Before the cylinder rod of the cup holder cylinder 87 is retracted, the airbag 612 gradually expands to squeeze and fix the carrier cup 12. During the expansion process of the airbag 612, the carrier cup 12 is gradually fixed in the cup tube 611 by the airbag 612, and the cylinder rod of the cup holder cylinder 87 is gradually retracted.

[0032] The working principle of the present invention is as follows: the carrier cup 12 is placed in the cup groove, the step at the opening of the carrier cup 12 falls on the cup holder 86, the aerosol collection device is moved to the collection area, and the centrifugal mechanism 6 and the cup changing mechanism 8 are started through the touch screen 5.

[0033] The driving disk 89 drives the placement plate 85 to rotate through the rotating disk 84. During the rotation, the medium box 10 delivers a certain amount of liquid medium into the empty cup 12 through the pump and the pipeline. After the rotation is completed, the empty cup 12 is located directly below the cup tube 611.

[0034] The cup holding cylinder 87 works, and the cup carrier 12 is sent into the cup tube 611 by the cup holder 86, and the opening of the cup carrier 12 is docked with the cavity mouth of the separation chamber. Before the cylinder rod of the cup holding cylinder 87 is retracted, the expansion pump 68 works and expands the airbag 612. The airbag 612 gradually expands to squeeze and fix the cup carrier 12. During the expansion of the airbag 612, the cup carrier 12 is gradually fixed in the cup tube 611 by the airbag 612, and the cylinder rod of the cup holding cylinder 87 is gradually retracted.

[0035] When the expansion pump 68 is damaged or the cylinder rod of the cup supporting cylinder 87 is not needed to be retracted, the cup supporting cylinder 87 can be used to fix the carrier cup 12 in the cup tube 611.

[0036] After the carrier cup 12 is fixed by the air bag 612, the water in the chamber 1 is pumped into the fluid chamber 615 through the fluid pipe 614. When the water flows into the fluid chamber 615, the heating coil is energized and generates heat. The water passes through the heating coil and takes on 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, thereby making the water with temperature closer to the carrier cup 12. The temperature of the carrier cup 12 is 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 connected to the chamber 2, the water with temperature slowly flows into the chamber 2 and is stored.

[0037] When the collection starts, the air pump 64 works and extracts the air in the collection chamber through the cleaning box 65 and the transmission pipe 66. When the air above the one-way plate 610 is extracted through the air hole, the one-way plate 610 will move toward the collection chamber under the working of the air pressure, so that the rebound spring is compressed. The air enters the air inlet chamber from the inlet pipe 7 and flows tangentially into the separation chamber through the swirl groove. The air forms a swirl in the separation chamber and flows along the inner wall of the separation chamber to the carrier cup 12. 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, and the swirl rotates upward from the middle of the carrier cup 12 to enter the discharge pipe, and flows from the collection chamber, the transmission pipe 66 and the cleaning box 65 to the air pump 64.

[0038] When the aerosol collection operation is completed, the expansion pump 68 works and causes the airbag 612 to gradually shrink. During the shrinkage of the airbag 612, the cylinder rod of the cup cylinder 87 gradually extends until the airbag 612 completes its shrinkage, and the cup cylinder 87 pushes the cup holder 86 against the step of the cup carrier 12 again.

[0039] When it is necessary to remove the carrier cup 12 from the cup tube 611 , the cup supporting cylinder 87 retracts the cylinder rod, so that the carrier cup 12 gradually moves out of the cup tube 611 and finally falls into the cup groove.

[0040] Afterwards, the driving disc 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 tube 611 .

[0041] When the aerosol collection is completed and it is necessary to clean the centrifugal box and the inlet pipe, the carrier cup 12 is taken away from the cup tube 611, and the air pump 64 starts to pump air in the reverse direction. The air flows into the gathering chamber through the transmission pipe 66, the cleaning box 65 and the transmission pipe 66. Since a one-way valve is installed at the outlet of the discharge pipe, the air can only flow out of the gathering chamber from the air hole. The air squeezes the one-way plate 610 and stretches the rebound spring, so that the one-way plate 610 gradually passes over the notch of the vortex groove. During the pumping process, the warm water in chamber two is pumped into the cleaning box 65 by the water pump. The air squeezes the water in the cleaning box 65, so that the water mixed with the air flows into the gathering chamber, and flows into the air inlet cavity through the vortex groove, and finally flows out from the inlet pipe 7.

[0042] After the water in chamber 2 has been pumped for a certain period of time, the pumping will stop, while the air will continue to be pumped. The flow of air and the heat of the water will accelerate the evaporation of water in the transmission pipe 66, the convergence chamber, the separation chamber, the air intake chamber and the inlet pipe 7, so that the inlet pipe 7 and the centrifugal box 63 can be quickly dried after being cleaned.

[0043] When the cleaning is completed, the one-way plate 610 is pulled back to its original position by the rebound spring under the pulling force of the rebound spring.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An aerosol collection device with a sampling port self-cleaning function, comprising a touch screen (5), the touch screen (5) being used to control the overall operation of the aerosol collection device, characterized in that: The invention also comprises a casing (1), wherein the touch screen (5) is mounted above the casing (1), wherein a centrifugal mechanism (6) for separating aerosol and air, and a cup changing mechanism (8) for replacing a supporting cup (12) are arranged inside the casing (1), wherein the cup changing mechanism (8) is located below the centrifugal mechanism (6), and the centrifugal mechanism (6) and the casing (1) are detachably connected, and the centrifugal mechanism (6) separates aerosol from air by centrifugation, so that the aerosol falls into the supporting cup (12); A partition (9) is installed inside the casing (1), the centrifugal mechanism (6) comprises a bottom plate (61) detachably mounted on the partition (9), a centrifugal box (63) and an air pump (64) are mounted on the bottom plate (61), and the middle of the centrifugal box (63) is connected to an input port of the air pump (64) via a transmission pipe (66); A water tank (67) and a cleaning tank (65) are provided on the bottom plate (61), and the cleaning tank (65) is connected in series to the transmission pipe (66); when cleaning the centrifugal box (63), water in the water tank (67) passes through the cleaning tank (65) and the transmission pipe (66) and is then pumped into the centrifugal box (63).

2. The aerosol collection device with a sampling port self-cleaning function according to claim 1, characterized in that: A protection box (4) is provided on one side of the casing (1), an inlet pipe (7) with an air port tilted upward is installed inside the protection box (4), an output end of the inlet pipe (7) is connected to an input end of the centrifugal mechanism (6), the box cover of the protection box (4) is in an inclined state when closed, the cup changing mechanism (8) is located below the partition (9), and the partition (9) is provided with a through hole for the carrier cup (12) to pass through.

3. The aerosol collection device with a sampling port self-cleaning function according to claim 2, characterized in that: A support plate (11) having a D-shaped frame structure is mounted on the partition plate (9), and the support plate (11) is located outside the through hole; The bottom plate (61) is detachably mounted on the support plate (11); a "C"-shaped casing (62) and a plurality of support columns are mounted on the bottom plate (61); a carrier plate (69) is mounted above the plurality of support columns; a centrifugal box (63) is mounted above the casing (62); an air pump (64) is mounted on the carrier plate (69); an annular air inlet cavity and a straight-cylindrical separation cavity are arranged inside the centrifugal box (63); a plurality of swirl grooves opened tangentially along the air inlet cavity are arranged between the air inlet cavity and the separation cavity; the centrifugal box (63) is connected to the inlet pipe (7) via a pipe connected to the air inlet cavity; a discharge pipe is arranged in the middle of the separation cavity inside the centrifugal box (63); the discharge pipe is connected to the input port of the air pump (64) via a transmission pipe (66); the cup changing mechanism (8) enables the cup mouth of the carrier cup (12) to dock with the cavity mouth of the separation cavity.

4. The aerosol collection device with a sampling port self-cleaning function according to claim 3, characterized in that: A cup barrel (611) is installed below the centrifugal box (63) on the outside of the cavity opening of the separation chamber, and an annular air bag (612) and a water bag (613) are arranged in sequence from top to bottom inside the cup barrel (611). The inner diameters of the air bag (612) and the water bag (613) in a contracted state are larger than the cavity opening diameter of the separation chamber. An expansion pump (68) is arranged on the bottom plate (61), and the expansion pump (68) is connected to the inside of the air bag (612) through a pipeline. When the carrier cup (12) is pushed into the cup tube (611), the expansion pump (68) operates to expand the air bag (612), thereby fixing the carrier cup (12) in the cup tube (611) through the expanded air bag (612) and achieving a sealing effect between the carrier cup (12) and the cup tube (611); When the carrier cup (12) needs to be replaced, the expansion pump (68) causes the air bag (612) to shrink and contract, so that the carrier cup (12) is taken out of the cup tube (611) by the cup replacement mechanism (8).

5. The aerosol collection device with a sampling port self-cleaning function according to claim 4, characterized in that: The water tank (67) is provided with chamber 1 and chamber 2 inside, water is stored in chamber 1, and small water pumps are installed inside chamber 1 and chamber 2; An annular fluid chamber (615) is provided inside the lower end of the cup tube (611), the water bag (613) is located inside the fluid chamber (615) and is connected to the fluid chamber (615), a partition plate and a heating coil are provided in the fluid chamber (615), two fluid tubes (614) connected to the fluid chamber (615) are provided outside the cup tube (611), the two fluid tubes (614) are located on both sides of the partition plate, the two fluid tubes (614) connect the fluid chamber (615) with chamber one and chamber two, the inlet of one fluid tube (614) and the outlet of the other fluid tube (614) are both higher than the fluid chamber (615), the water pump in chamber one is connected to the fluid tube (614), and the inner diameter of the fluid tube (614) connected to chamber one is larger than the inner diameter of the fluid tube (614) connected to chamber two.

6. The aerosol collection device with a sampling port self-cleaning function according to claim 5, characterized in that: A cleaning box (65) is disposed on the carrier plate (69), the inlet height of the cleaning box (65) is lower than the outlet height, the second chamber is connected to the bottom of the cleaning box (65) via a pipeline, and the pipeline connected to the cleaning box (65) is connected to a water pump in the second chamber; A raised convergence chamber is provided in the middle of the upper part of the centrifugal box (63), the convergence chamber is connected to the outlet of the discharge pipe and the inlet of the transmission pipe (66), the end of the discharge pipe away from the convergence chamber is trumpet-shaped, a one-way plate (610) is slidably mounted on the outer side of the discharge pipe, the one-way plate (610) is tightly connected to the outer wall of the discharge pipe and the inner wall of the centrifugal box (63), a rebound spring is provided between the one-way plate (610) and the upper end surface of the centrifugal box (63), the centrifugal box (63) is provided with an air hole connecting the separation chamber and the convergence chamber, and a one-way valve is installed at the outlet of the discharge pipe; When the one-way plate (610) slides to the trumpet-shaped end of the discharge pipe, the rebound 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 rebound spring is in the initial state, the one-way plate (610) is located above the notch of the swirl groove.

7. The aerosol collection device with a sampling port self-cleaning function according to claim 2, characterized in that: A medium box (10) is installed on the partition (9), and the medium box (10) pumps liquid medium into the empty carrier cup (12) through a pump and a pipeline; The cup changing mechanism (8) comprises a base plate (81) with four corner openings and a guide rod (82) slidably mounted in the openings, the guide rod (82) being connected to the inner end surface of the casing (1), a lifting cylinder (83) being mounted inside the casing (1) below the base plate (81), a slip ring (88) and a drive disk (89) being mounted on the base plate (81), the drive disk (89) being located inside the slip ring (88), a rotating disk (84) being slidably mounted on the slip ring (88), and the The input end of the driving disk (89) is connected to the rotating disk (84); a placement plate (85) is connected to the rotating disk (84) via a support; a plurality of cup grooves are provided on the placement plate (85); a cup holder (86) is provided on the outer side of the cup groove of the placement plate (85); a plurality of cup holder cylinders (87) are provided on the rotating disk (84) at positions corresponding to each cup holder (86); cylinder rods of the cup holder cylinders (87) penetrate the placement plate (85) and are connected to the cup holders (86).

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

9. The aerosol collection device with a sampling port self-cleaning function according to claim 1, characterized in that: The housing (1) is provided with a front door (2) and a side door (3); the front door (2) facilitates the placement of the cup carrier (12) into the cup exchange mechanism (8) or the removal of the cup carrier (12) from the cup exchange mechanism (8); and the side door (3) facilitates the installation of the centrifugal mechanism (6) on the support plate (11) or the removal of the centrifugal mechanism (6) from the support plate (11).

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