Suction type pollen collector for monitoring sensitization pollen

Abstract

The utility model provides a suction type pollen collector for monitoring sensitized pollen. The suction type pollen collector comprises a shell, a fan is arranged in the shell, and the shell is provided with an air inlet and an air outlet Air enters the shell from the air inlet and passes through the fan, and a flowing path discharged from the air outlet is constructed into an air channel; a flow guide cover and a powder collector are arranged in an air channel between the air inlet and the fan; the flow guide cover is of a funnel-shaped structure, the small opening side of the flow guide cover of the funnel-shaped structure faces the powder collector, and the large opening side of the flow guide cover is provided with a filter screen. A glass slide control motor is also arranged in the shell and is in driving connection with the powder collector; the powder collector is provided with a glass slide, and the surface of the glass slide is coated with a viscous coating. The suction type pollen collector has the advantages that the flow guide structure forming the air channel is arranged, pollen can be collected in all directions, and the suction type pollen collector is not affected by airflow and rainfall; the pollen carrier is a common glass slide and is convenient to purchase and store on a large scale; the comprehensive cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring, in particular to an inhalation type pollen collector for monitoring allergenic pollen. Background Art

[0002] Pollen in the air is a common allergen, causing diseases such as allergic rhinitis, conjunctivitis, asthma and allergic dermatitis. The incidence rate is increasing year by year, which has a great impact on people's quality of life, work and study. Therefore, we have established a pollen concentration monitoring and forecasting system.

[0003] Currently, the commonly used pollen monitoring methods are natural sedimentation collection and suction pollen collection. Natural sedimentation is a passive collection method, that is, the slide is installed on an open-air shelf, and the pollen naturally settles on the slide. After 24 hours, the number of pollen adhering to the slide is read under a microscope, and the unit of measurement is grains / thousand square millimeters. Suction is an active capture method, using a special electric device with a drainage structure. A fan with a fixed wind speed is installed in the drainage structure to actively inhale pollen in the atmosphere onto the adhesive tape. After 24 hours, the number of pollen adhering to the adhesive tape is read under a microscope and the unit of measurement is grains / cubic meter. Currently, the commonly used monitoring instruments are imported Burkard brand products and rotorod samplers. Utility Model Content

[0004] The embodiment of the utility model provides an inhalation-type pollen collector for monitoring allergenic pollen, which solves the technical problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0006] An inhalation pollen collector for monitoring allergenic pollen includes a housing; a fan is provided in the housing, and the housing is provided with an air inlet and an exhaust port; the flow path of air entering the housing from the air inlet, passing through the fan, and being discharged from the exhaust port is configured as an air channel;

[0007] A flow guide hood and a powder collector are arranged in the air passage between the air inlet and the fan; the flow guide hood is a funnel-shaped structure, the small opening side of the flow guide hood of the funnel-shaped structure faces the powder collector, and the large opening side of the flow guide hood is provided with a filter; the powder collector has a glass slide base and a glass slide, the surface of the glass slide has an adhesive coating, and the glass slide is detachably mounted on the glass slide base;

[0008] The shell also has a glass carrier control motor and a controller. The glass carrier control motor is connected to the glass carrier base and is used to drive the glass carrier base to cut the air channel. The controller is connected to the glass carrier control motor circuit and is used to control the start and stop of the glass carrier control motor.

[0009] Preferably, the powder collector further comprises a guide base, the guide base and the glass carrier base are slidably connected to each other, and the guide base is detachably installed in the housing; the glass carrier base has a rack for driving and connecting with the glass carrier control motor; the glass carrier control motor is used to drive the glass carrier base to move relative to the guide base;

[0010] The guide base is a groove-shaped structure, and a slide rail is arranged inside the guide base of the groove-shaped structure, and the glass carrier base cooperates with the slide rail; an opening is arranged on one side of the guide base, and the rack corresponds to the opening position.

[0011] Preferably, it further comprises a top cover, which is detachably mounted in the area of ​​the air inlet of the housing and has a gap with the air inlet;

[0012] The shell also has a guide tube, a movable support and a support control motor. The guide tube is movably connected to the movable support, the support control motor is drivingly connected to the movable support, the guide cover is connected to the guide tube, and the support control motor can drive the guide cover to approach / move away from the slide.

[0013] A first air flow meter is provided in the area of ​​the air inlet of the shell; the first air flow meter is connected to the controller circuit and is used to send the air intake flow information of the area of ​​the air inlet to the controller, and the controller is connected to the support control motor circuit; when the air intake flow in the area of ​​the air inlet of the shell is less than a first preset threshold of the controller, the controller sends a first control signal to the support control motor, so that the support control motor drives the air guide cover away from the slide.

[0014] Preferably, one side of the small opening of the air guide cover has an air outlet nozzle with a rectangular structure, and the air outlet nozzle has a strip-shaped through hole;

[0015] The rectangular air outlet nozzle is provided with notches on both sides of its wide side; the area of ​​the notches is determined by the preset rated ventilation volume;

[0016] The shell also has a guide tube, a movable support and a support control motor. The guide tube is movably connected to the movable support, the support control motor is drivingly connected to the guide tube, the guide cover is connected to the guide tube, and the support control motor can drive the guide cover to approach / move away from the slide.

[0017] The shell also has a second air flow meter, and the probe of the second air flow meter is adjacent to the notch; the second air flow meter is connected to the controller circuit and is used to send ventilation flow information of the notch to the controller, and the controller is connected to the support control motor circuit. When the ventilation flow of the notch is greater than a second preset threshold of the controller, the second air flow meter sends a second control signal to the support control motor, so that the support control motor drives the guide cover to approach the glass slide.

[0018] Preferably, the air deflector can be detachably mounted on one side end of the movable support; the side of the movable support used to mount the air deflector has an inclination, and the edge of the side of the air deflector tube is provided with a plurality of mounting grooves at equal intervals, and a plurality of protrusions cooperating with the mounting grooves are correspondingly arranged on the outer side of the air deflector.

[0019] Preferably, the exhaust port is located at the side of the housing; the housing also has a movable damper structure for changing the air flow rate of the exhaust port;

[0020] The movable damper structure includes a frame body of a rectangular frame structure, an active damper and a plurality of driven dampers are arranged in the enclosed area of ​​the frame body, the active damper and the driven damper are arranged in sequence and are movably connected to the frame body, and the active damper and the plurality of driven dampers can rotate relative to the frame body;

[0021] The active damper is drive-connected to the driven damper, and the movable damper structure also has a damper control motor, which is drive-connected to the active damper;

[0022] A third air flow meter is provided in the area of ​​the air inlet of the shell; the third air flow meter is connected to the controller circuit and is used to send the air intake flow information of the air inlet area to the controller, and the controller is connected to the damper control motor circuit; when the air intake flow of the air inlet of the shell is less than the third preset threshold of the controller, the controller sends a third control signal to the damper control motor, so that the damper control motor drives the active damper to rotate, thereby driving the driven damper to rotate, thereby increasing the opening area of ​​the enclosed area of ​​the frame.

[0023] Preferably, the housing further comprises a glass recovery cylinder, a glass storage cylinder, a first photoelectric sensor, a second photoelectric sensor, a recovery drive motor and a feeding drive motor; the glass recovery cylinder and the glass storage cylinder are vertical structures, a discharge port is provided on one side of the bottom of the glass storage cylinder, and a recovery port is provided on the top of the glass recovery cylinder; the glass storage cylinder is used to accommodate a plurality of glass bases carrying glass slides arranged in a stacked manner; the first photoelectric sensor, the second photoelectric sensor, the recovery drive motor and the feeding drive motor are respectively connected to the controller by circuits;

[0024] One side of the guide base is constructed as a recovery area, which is connected to the discharge port, and the other side is constructed as a loading area, which is connected to the recovery port. The middle part of the guide base is constructed as an operation area; the field of view of the first photoelectric sensor and the output end of the recovery drive motor correspond to each other and are located in the recovery area; the output end of the loading drive motor is used to drive the glass carrier base located at the bottom of the glass carrier storage barrel; the distance between the output end of the glass carrier control motor and the output end of the recovery drive motor is equal to the length of the rack of the glass carrier base, and the distance between the output end of the glass carrier control motor and the output end of the loading drive motor is equal to the length of the rack of the glass carrier base; the field of view of the second photoelectric sensor is located in the operation area;

[0025] When the glass carrier control motor drives the glass carrier base to move relative to the guide base and enter the field of view of the first photoelectric sensor, the first photoelectric sensor sends a fourth control signal to the controller, so that the recovery drive motor drives the glass carrier base to enter the glass carrier recovery cylinder, and also drives the loading drive motor to drive the glass carrier base at the bottom of the glass carrier storage cylinder to move to the working area. When the glass carrier base enters the field of view of the second photoelectric sensor, the second photoelectric sensor sends a fifth control signal to the controller, so that the loading drive motor stops.

[0026] Preferably, a driving wheel moving block is further provided in the shell, and the end of the driving shaft of the glass-carrying control motor for driving the powder collector is installed on one side of the driving wheel moving block; the other side of the driving wheel moving block is provided with a pulling strip penetrating the shell, and a compression spring is clamped between the other side of the driving wheel moving block and the inner wall of the shell;

[0027] A traction head is arranged at the end of the pulling strip extending out of the shell, and the traction head can rotate relative to the pulling strip; the outer side wall of the shell has a groove part, and the traction head has a clip for extending into the groove part.

[0028] Preferably, the housing has a glass window and an L-shaped rain shield, and the guide base extends into / is withdrawn from the housing through the glass window; the L-shaped rain shield is located above the glass window.

[0029] It can be seen from the technical solutions provided by the above-mentioned embodiments of the utility model that the utility model provides an inhalation pollen collector for monitoring allergenic pollen, comprising a shell; a fan is provided in the shell, and the shell is provided with an air inlet and an exhaust port; the air enters the shell from the air inlet, passes through the fan, and the flow path discharged from the exhaust port is constructed into an air channel; a flow guide hood and a powder collector are provided in the air channel between the air inlet and the fan; the flow guide hood is a funnel-shaped structure, the small mouth side of the flow guide hood of the funnel-shaped structure faces the powder collector, and the large mouth side of the flow guide hood has a filter; the shell also has a glass slide control motor, which is drive-connected to the pollen collector; the pollen collector has a glass slide, and the surface of the glass slide is coated with a sticky coating. The utility model provides an inhalation-type pollen collector for monitoring allergenic pollen, which has the following advantages: a guide structure for forming an air channel is provided, which can collect pollen in an all-round manner without being affected by airflow and rainfall; a mechanism for automatic replacement of a glass slide base-glass slide assembly is provided, which can realize automatic pollen collection and automatic replacement of glass slides for multiple consecutive days; the pollen carrier is a common glass slide, which is convenient for large-scale purchase and storage; and the overall cost is low.

[0030] Additional aspects and advantages of the present invention will be partially given in the following description, which will become apparent from the following description or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a front view of an inhalation-type pollen collector for monitoring allergenic pollen provided by the utility model;

[0033] Figure 2 yes Figure 1 A cross-sectional view of

[0034] Figure 3 It is a top view of an inhalation-type pollen collector for monitoring allergenic pollen provided by the utility model;

[0035] Figure 4 It is a schematic diagram of the positional relationship between a pollen collector and a glass slide moving block of a suction-type pollen collector for monitoring allergenic pollen provided by the utility model;

[0036] Figure 5 It is a schematic diagram of the positional relationship between a guide cover and a guide tube of an inhalation-type pollen collector for monitoring allergenic pollen provided by the utility model;

[0037] Figure 6 It is a schematic diagram of a movable damper structure of a suction-type pollen collector for monitoring allergenic pollen provided by the utility model;

[0038] Figure 7 It is a schematic diagram of the air door transmission of a movable air door structure of an inhalation-type pollen collector for monitoring allergenic pollen provided by the utility model;

[0039] Figure 8 It is a schematic diagram of an automatic replacement mechanism of a glass base of an inhalation-type pollen collector for monitoring allergenic pollen provided by the utility model;

[0040] Fig. 9 It is a front view of a glass storage barrel of an inhalation-type pollen collector for monitoring allergenic pollen provided by the utility model;

[0041] Fig.10 It is a schematic diagram of the arrangement of the automatic replacement mechanism of the glass base of the suction-type pollen collector for monitoring allergenic pollen provided by the utility model in the housing;

[0042] Fig.11 It is a schematic diagram of using GraphPad software to draw scatter plots and perform Spearman correlation analysis on continuous variables with non-normal distribution;

[0043] Fig.12 This is a schematic diagram of the average daily pollen count using two pollen collection methods, gravity sedimentation and inhalation, in Dongcheng District, Beijing from September 1, 2023 to September 27, 2023.

[0044] In the figure:

[0045] 1. Shell 101. Glass window 102. Air inlet 103. Exhaust port 2. Flow guide cover 201. Filter 202. Air outlet nozzle 204. Protrusion;

[0046] 3. Powder collector 31. Guide base 32. Glass slide base 33. Glass slide 34. Rack;

[0047] 4. Driving wheel moving block 41. Pulling bar 42. Traction head 43. Compression spring;

[0048] 5. Guide tube 51. Mounting slot 6. Top cover 7. Fan;

[0049] 8. Output end of glass carrier control motor 9. Movable support 10. Support control motor 11. First air flow meter 12. Second air flow meter 13. Rain shield;

[0050] 14. Frame 15. Active damper 151. First driving wheel 152. Second driving wheel 16. Driven damper 161. Driven wheel 17. First transmission belt 18. Second transmission belt 19. Damper control motor;

[0051] 21. Glass carrier recovery cylinder 22. Glass carrier storage cylinder 221. Discharge port 23. First photoelectric sensor 24. Second photoelectric sensor 25. Output end of recovery drive motor 26. Output end of feeding drive motor DETAILED DESCRIPTION

[0052] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0053] Those skilled in the art will appreciate that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or coupling. The term "and / or" used herein includes any unit and all combinations of one or more associated listed items.

[0054] Those skilled in the art will appreciate that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that those terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0055] To facilitate the understanding of the embodiments of the present utility model, several specific embodiments will be further explained below with reference to the accompanying drawings, and each embodiment does not constitute a limitation on the embodiments of the present utility model.

[0056] The utility model provides an inhalation type pollen collector for monitoring allergenic pollen, which is mainly used to solve the following technical problems:

[0057] The applicant found in practice that the natural sedimentation method is easily affected by airflow and pollutants in the air, and the unit of measurement is area, which cannot well reflect the concentration of pollen. On the other hand, the commonly used imported suction monitoring instruments are expensive, large in size, with a narrow and unreasonable air inlet. When working, the tail wing that keeps the air outlet facing the airflow direction may rotate at any time with the wind direction, which has obvious risks of injuring people or objects.

[0058] China Utility Model Patent Publication Specification CN101806676A discloses a pollen collector, and specifically discloses that it includes a chassis, an azimuth reduction motor with an azimuth drive output shaft arranged in the chassis, and a sampling bracket arranged above the chassis, wherein the azimuth drive output shaft is perpendicular to the horizontal plane; the top end of the azimuth drive output shaft passes through the upper end wall of the chassis and is connected to the sampling bracket, and a vertical sampling piece is fixedly connected to the sampling bracket. The principle of the pollen collector is that the sampling piece moves relative to the air at a constant rotation speed, and the principle of solid impact is used to make the pollen in the air stick to the surface of the windward side of the sampling piece to complete the sampling. However, the collection accuracy of the collector is significantly affected by meteorological conditions. When the atmospheric environment is relatively stable, its collection accuracy will be significantly reduced.

[0059] Therefore, it is necessary to develop a new type of suction pollen collector with volume as the unit of measurement and reasonable design.

[0060] See also Figure 1 The utility model provides an inhalation pollen collector for monitoring allergenic pollen, comprising a housing 1. A fan 7 is provided in the housing 1, and the housing 1 is provided with an air inlet 102 and an exhaust port 103. The air enters the housing 1 from the air inlet 102, passes through the fan 7, and is discharged from the exhaust port 103, and the flow path is configured as an air channel.

[0061] A guide hood 2 and a powder collector 3 are provided in the air passage between the air inlet 102 and the fan 7. The guide hood 2 is a funnel-shaped structure, the small opening side of the guide hood 2 of the funnel-shaped structure faces the powder collector 3, and the large opening side of the guide hood 2 has a filter 21. According to the common sense of the understanding of the funnel, the diameter of the inlet side of the funnel is relatively large, and the diameter of the outlet side is relatively small, so the "small opening" and "large opening" here are used as comparison objects.

[0062] The filter 21 is used to filter dust with large particle sizes, and therefore the filter 21 has a mesh size larger than the common pollen particle size.

[0063] The housing 1 also has a glass slide control motor, a controller and a power supply that are interconnected in circuit. The glass slide control motor is connected to the powder collector 3 for driving the powder collector 3 to cut the air channel (i.e., a linear movement perpendicular to the air flow direction in the air channel), and is also connected to the controller circuit. The controller is used to control the start and stop of the glass slide control motor. The power supply is used to power the entire machine (glass slide control motor, fan 7 and controller, etc.), and mains electricity can be used. The powder collector 3 has a glass slide 33, and the surface of the glass slide 33 has a sticky coating for collecting pollen introduced into the air in the air channel. The position of the glass slide control motor can be appropriately arranged according to the internal space of the housing 1, so it is not shown in the figure.

[0064] The utility model provides an inhalation pollen collector for monitoring allergenic pollen, and its working principle is as follows: the fan 7 in the housing 1 is used to form an air suction power source in the housing 1. Under the driving action of the fan 7, air enters the housing 1 from the air inlet 102, passes through the fan 7, and is discharged from the exhaust port 103. This path is constructed as an air channel. The air deflector 2 and the pollen collector 3 are sequentially arranged in this air channel. Pollen particles in the air are discharged from the air deflector 2 to the glass slide 33 of the pollen collector 3, and are adhered and collected by the adhesive coating on the glass slide 33. The glass slide control motor drives the pollen collector 3 as a whole or the substructure carrying the glass slide 33 on the pollen collector 3 to move at a uniform speed along the length direction of the glass slide 33 in the housing 1, and the moving trajectory is always exposed on the side of the small opening of the air deflector 2, so that after a period of time, the pollen particles can be uniformly collected on the glass slide 33 along its length direction. The glass slide 33 on which the pollen particles are collected is used to judge the concentration of the pollen particles in the air, and to provide a reference for the pollen concentration forecast.

[0065] The time for collecting pollen is determined by the duration of the movement of the glass slide 33. In the embodiment provided by the utility model, the control motor of the glass slide base 32 adopts a commercially available low-speed glass slide control motor, and the matching reducer is also set according to the prior art, such as a reducer gear set similar to a clock movement, driving the end (i.e., the hour hand) of the pollen collector 3. According to the commonly used pollen monitoring sampling method, for example, the movement duration of the glass slide 33 can be set to 24 hours, or other preset durations according to actual conditions. In this case, the controller can adopt a control device with a PLC (such as the commercially available STM32F205RET6 model), which can realize the preset control of the motor start and stop through pre-programming.

[0066] In the preferred embodiment provided by the utility model, the powder collector 3 includes a guide base 31 and a glass slide base 32 which are slidably connected to each other. The guide base 31 is detachably mounted in the housing 1. The glass slide 33 is detachably mounted on the glass slide base 32, and the two together constitute a glass slide base-glass slide assembly. The glass slide base 32 has a rack 34 for driving connection with the drive shaft of the glass slide control motor; the glass slide control motor is used to drive the glass slide base 32 to move relative to the guide base 31. In actual use, the glass slide 33 can be replaced individually, or a certain amount of glass slide base-glass slide assemblies can be prepared for modular replacement.

[0067] Furthermore, the guide base 31 is a groove-shaped structure, and a slide rail is provided inside the guide base 31 of the groove-shaped structure, and the glass carrier base 32 cooperates with the slide rail; one side of the guide base 31 has an opening, and the rack 34 corresponds to the position of the opening.

[0068] The housing 1 has a glass window 101 and an L-shaped rain shield 13, and the guide base 31 extends into / out of the housing 1 through the glass window 101. The rain shield 13 is located above the glass window 101, and its cross section is L-shaped. The rain shield 13 is used to shield and guide rainwater that slides down along the housing 1, and prevent rainwater from flowing into the housing 1 along the gap of the glass window 101.

[0069] In the preferred embodiment provided by the utility model, the inhalation pollen collector for monitoring allergenic pollen is further provided with a top cover 6, which is detachably mounted in the area of ​​the air inlet 102 of the housing 1 and has a gap with the air inlet 102. The top cover 6 is preferably an umbrella-shaped structure, and its coverage area is larger than the air inlet 102, and is used to block rainwater. The gap between it and the air inlet 102 is used for ventilation.

[0070] The housing 1 also has a guide tube 5, a movable support 9 and a support control motor 10. The guide tube 5 is movably connected to the movable support 9, the support control motor 10 is drivingly connected to the movable support 9, and the guide tube 5 is also connected to the guide cover. Figure 5 As shown, the guide tube 5 and the movable support 9 are mutually nested, and the guide cover is installed on the top of the guide tube 5. The support control motor 10 can further drive the guide cover to approach / move away from the slide glass 33 by driving the movable support 9.

[0071] One side of the small opening of the guide cover 2 is close to the slide glass 33, but a small gap is left between the end of the guide cover 2 and the surface of the slide glass 33 to prevent the end of the guide cover 2 from scratching the coating on the surface of the slide glass 33. The size of this gap is set according to actual needs and is completed during the debugging work before the instrument is used.

[0072] In order to monitor the working status of the instrument and prevent the air flow from being too low to affect the pollen collection effect, the utility model provides the following improved embodiments:

[0073] Embodiment 1

[0074] The area of ​​the air inlet 102 of the shell 1 is provided with a first air flow meter 11. The first air flow meter 11 is connected to the controller circuit, and is used to send the air intake flow information of the air inlet 102 area to the controller in real time. The controller is connected to the support control motor 10 circuit. When the air intake flow of the air inlet 102 of the shell 1 is less than the first preset threshold value of the first air flow meter 11, the first air flow meter 11 sends a first control signal to the support control motor 10, so that the support control motor 10 drives the movable support 9 and the air guide cover 2 to move away from the glass slide 33, increase the distance between the small opening of the air guide cover 2 and the glass slide 33, and increase the air outlet flow. The controller can adopt a control device with a PLC, and the first preset threshold value is stored in the controller in a pre-programmed manner.

[0075] Embodiment 2

[0076] The small opening of the air guide cover 2 is provided with an air outlet nozzle 22 of a rectangular body structure, and the air outlet nozzle 22 has a strip-shaped through hole connected to the large opening of the air guide cover 2. A small gap is preferably set between the air outlet nozzle 22 and the glass slide 33. In order to prevent the local negative pressure generated by the airflow from causing the air outlet nozzle 22 to fit closely with the glass slide 33, thereby hindering the uniform movement of the glass slide 33 and scratching the coating on the surface of the glass slide 33, in some improved methods, the air outlet nozzle 22 of the rectangular body structure is provided with notches on both sides of its wide side, so that the ventilation in this area is smooth.

[0077] The applicant found in the instrument test that the funnel-shaped air guide cover 2 has a tendency to increase the air output on the side of its small opening (i.e., the air outlet nozzle 22) due to its configuration with a gradually reduced cross-sectional area, which will cause the measured data of pollen capture to be larger. In some improved embodiments, the housing 1 also has a second air flow meter 12, which is connected to the support control motor 10 circuit, and the probe of the second air flow meter 12 is adjacent to the gap of the air outlet nozzle 22. The second air flow meter 12 is connected to the controller circuit for sending ventilation flow information of the gap area to the controller, and the controller is connected to the support control motor 10 circuit. When the ventilation flow of the gap area is greater than the second preset threshold of the second air flow meter 12, the second air flow meter 12 sends a second control signal to the support control motor 10. The support control motor 10 drives the movable support 9 and the air guide cover 2 to move in the direction close to the slide 33, reducing the distance between the air outlet nozzle 22 of the air guide cover 2 and the slide 33, and reducing the air flow. The controller may be a control device having a PLC, and the second preset threshold is stored in the controller in a preprogrammed manner.

[0078] It should be understood that the installation method of the guide tube 5, the movable support 9, the support control motor 10, the first air flow meter 11, and the second air flow meter 12 in the housing 1 is based on the existing technology and is properly arranged and installed according to actual needs. Among them, the guide tube 5 is fixedly installed, and one side of the movable support 9 also has a drive structure similar to a rack, which meshes with the output end of the support control motor 10. The other side of the movable support 9 is provided with a slide rail and a slide groove that cooperate with each other at the corresponding position of the guide tube 5. The support control motor 10 drives the movable support 9 to move, for example Figure 5 As shown, the support control motor 10 drives the movable support 9 to rise and fall. And the support control motor 10 prevents the movable support 9 from naturally falling through its own restraining effect.

[0079] Embodiment 3

[0080] The applicant found in the experiment that it is also possible to increase the exhaust volume to guide the intake air, and also have the effect of improving heat dissipation. In a specific embodiment, the exhaust port 103 is arranged on the side of the housing 1 (the lower area), for example Figure 1 and 2As shown in , it can be arranged on both sides. An active damper structure is provided in the inner area of ​​the exhaust port 103 in the housing 1 to change the air flow rate of the exhaust port 103 .

[0081] In this embodiment, the movable damper adopts a louver structure, such as Figure 6 As shown, it includes a frame body 14 of a rectangular frame structure, and an active damper 15 and a plurality of driven dampers 16 are arranged in the enclosed area of ​​the frame body 14. The active damper 15 and the plurality of driven dampers 16 are arranged in sequence and are rotatably connected to the frame part of the frame body 14.

[0082] The active damper structure also has a damper control motor 19, which is connected to the active damper 15 by driving, and the active damper 15 is also connected to the driven damper 16 by driving. The damper control motor 19 can drive the active damper 15 to rotate, drive the multiple driven dampers 16 to rotate together, change the opening area of ​​the enclosed area of ​​the frame 14, and adjust the air volume. Figure 7 As shown, the driving mode of the active damper 15 and the driven damper 16 can be that the two ends of the active damper 15 and the driven damper 16 are installed on the frame 14 through a rotating shaft, and a reserved space is also provided in the frame of the frame 14, and the rotating shaft of the damper is provided with a section of end in the frame. Among them, the end of the rotating shaft of the active damper 15 is provided with two driving wheels (a first driving wheel 151 and a second driving wheel 152), and the end of the rotating shaft of the driven damper 16 is provided with a driven wheel 161, the first driving wheel 151 of the active damper 15 is connected to the damper control motor 19 through the first transmission belt 17, and the second driving wheel 152 is connected to the driven wheel 161 of the driven damper 16 through the second transmission belt 18, so that when the active damper 15 rotates, the driven damper 16 can be driven to rotate through the driving wheel and the transmission belt. By changing the inclination angle of the active damper 15 and the driven damper 16, the opening area of ​​the frame 14 is changed to achieve the adjustment of the air volume.

[0083] In this embodiment, a third air flow meter (not shown in the figure) is provided in the area of ​​the air inlet 102 of the housing 1; the third air flow meter is connected to the controller circuit, and is used to send real-time air flow information of the area of ​​the air inlet 102 to the controller, and the controller is connected to the damper control motor 19 circuit. When the air flow of the air inlet 102 of the housing 1 is less than the third preset threshold of the controller, the controller sends a third control signal to the guide base control motor, so that the damper control motor 19 drives the active damper 15 to rotate, drives the driven damper 16 to rotate, changes the inclination angle of the active damper 15 and the driven damper 16, increases the opening area of ​​the enclosed area of ​​the frame 14, increases the air volume, and increases the drainage of the air inlet 102, so as to achieve the purpose of increasing the air volume.

[0084] Similar to the above embodiment, the controller may be a control device having a PLC, and the third preset threshold is stored in the controller in a pre-programmed manner.

[0085] The structures of the above three embodiments can be selected as one or more groups according to actual needs. When the first and third embodiments are combined, only one air flow meter can be set in the area of ​​the air inlet 102, and the preset threshold for judging the intake air flow can be one. In this case, the controller is configured to preferentially use the method of adjusting the active damper structure.

[0086] In the preferred embodiment provided by the utility model, the air guide 2 is installed in the housing 1 as follows: the housing 1 has an axially penetrating air guide tube 5, one side of the air guide tube 5 faces the fan 7, and the air guide 2 is detachably installed on the other side of the air guide tube 5; the air guide tube 5 also has a glass loading port, and the guide base 31 passes through the air guide tube 5 through the glass loading port. The air guide tube 5 has an inclination on one side for installing the air guide 2, and the edge of the air guide tube 5 is evenly spaced to set a plurality of installation grooves 51 (for example, Figure 5 As shown, four protrusions 204 are arranged obliquely in the circumferential direction, and a plurality of protrusions 204 of the same number are correspondingly arranged on the outer side of the air deflector 2. The air deflector 2 with the above arrangement can be firmly engaged and connected to the air deflector tube 5.

[0087] In the preferred embodiment provided by the utility model, a driving wheel moving block 4 is also provided in the shell 1, and the output end 8 (gear) of the glass-carrying control motor for driving the powder collector 3 is installed on one side of the driving wheel moving block 4. The other side of the driving wheel moving block 4 has a pulling bar 41 that runs through the shell 1, and a compression spring 43 is clamped between this side of the driving wheel moving block 4 and the inner wall of the shell 1. A traction head 42 is provided at the end of the pulling bar 41 extending out of the shell 1, and the traction head 42 can rotate relative to the pulling bar 41; the outer side wall of the shell 1 has a groove portion, and the traction head 42 has a clip for extending into the groove portion. The compression spring 43 is set to a compressed state and has a certain elastic recovery margin, which can ensure that the output end 8 of the glass-carrying control motor is tightly matched with the rack 34. When the glass slide 33 needs to be replaced manually, the driving wheel moving block 4 is pulled by the traction head 42 and the pulling bar 41, so that the output end 8 of the glass slide control motor and the rack 34 are separated from each other. At this time, the clip is moved out of the groove part, and the traction head 42 is rotated to clamp the traction head 42 on the outer wall of the shell 1, so that the output end 8 of the glass slide control motor and the rack 34 remain separated. It should be understood that the connection mode between the output end 8 of the glass slide control motor and the glass slide control motor can be set to a two-stage drive shaft structure according to the prior art, and the part used to directly drive the powder collector 3 is actually the second-stage drive shaft, and the fixed installation of the direct output part of the glass slide control motor is the first-stage drive shaft, and the two are meshed with each other by setting gears. The second-stage drive shaft and the driving wheel moving block 4 can move together, and when the end of the second-stage drive shaft, that is, the output end 8 of the glass slide control motor, is separated from the powder collector 3, the first-stage drive shaft is also separated from the first-stage drive shaft.

[0088] In the preferred embodiment provided by the utility model, a mechanism for automatically replacing the slide base-slide assembly is also provided. Figures 8 to 10 As shown in the figure): the housing also has a glass recovery cylinder 21, a glass storage cylinder 22, a first photoelectric sensor 23, a second photoelectric sensor 24, a recovery drive motor and a feeding drive motor; the glass recovery cylinder 21 and the glass storage cylinder 22 are vertical structures, the bottom side of the glass storage cylinder 22 has a discharge port 221, and the top of the glass recovery cylinder 21 has a recovery port; the glass storage cylinder 22 is used to accommodate a plurality of stacked glass bases 32 carrying glass slides 33 without pollen attached, that is, a replacement glass base-glass slide assembly, and the glass recovery cylinder 21 is used to accommodate a glass base-glass slide assembly that has completed pollen collection. The first photoelectric sensor 23, the second photoelectric sensor 24, the recovery drive motor and the feeding drive motor are respectively connected to the controller by circuits.

[0089] One side of the guide base 31 is constructed as a recovery area, which is connected to the discharge port 221, and the other side is constructed as a loading area, which is connected to the recovery port. The middle part of the guide base 31 is constructed as an operating area; the field of view of the first photoelectric sensor 23 projected onto the guide base 31 corresponds to the output end 25 of the recovery drive motor and is located in the recovery area; the output end 26 of the loading drive motor is used to drive the glass carrier base 32 connected to the bottom of the glass carrier storage barrel 22; the distance between the output end of the glass carrier control motor and the output end 25 of the recovery drive motor is equal to the length of the rack of the glass carrier base 32, and the distance between the output end 8 of the glass carrier control motor and the output end 26 of the loading drive motor is equal to the length of the rack of the glass carrier base 32; the field of view of the second photoelectric sensor 24 projected onto the guide base 31 is located in the operating area.

[0090] When the glass slide control motor drives the glass slide base 32 for collection operation to move relative to the guide base 31, and the glass slide base 32 enters the field of view of the first photoelectric sensor 23, the first photoelectric sensor 23 sends a fourth control signal to the controller, so that the controller controls the recovery drive motor to drive the glass slide base 32 to enter the glass slide recovery cylinder 21, that is, the glass slide base-glass slide assembly completes the collection operation. At the same time, the controller also controls the loading drive motor to drive the glass slide base 32 at the bottom of the glass slide storage cylinder 22 to move to the working area. When the glass slide base 32 enters the field of view of the second photoelectric sensor 24, the second photoelectric sensor 24 sends a fifth control signal to the controller, so that the loading drive motor stops, and the replacement of the glass slide base-glass slide assembly is completed.

[0091] In the above embodiment, the timing when the glass slide base 32 enters the field of view of the first photoelectric sensor 23 can correspond to the preset glass slide drive motor driving the glass slide base 32 to move for a period of time, such as 24 hours, that is, after completing a whole day's collection work, it is automatically recycled and replaced with the next glass slide base-glass slide assembly for the next day's collection operation. The glass slide storage barrel 22 can hold 6 sets of spare glass slide base-glass slide assemblies to carry out a week's collection operation. The purpose of setting the distance relationship between the output end 8 of the glass slide control motor, the output end 25 of the recovery drive motor, and the output end 26 of the feeding drive motor is that when the glass slide base 32 enters the field of view of the first photoelectric sensor 23, the output end 25 of the recovery drive motor just meshes with the front end of the rack 34 of the glass slide base 32, and the meshing position of the output end of the glass slide control motor is located at the end of the rack 34 of the glass slide base 32; when the subsequent spare glass slide base 32 enters the field of view of the second photoelectric sensor 24, the glass slide control motor The output end of the machine is meshed with the front end of the rack of the glass carrier base 32, and the meshing position of the output end 26 of the feeding drive motor is located at the end of the rack of the glass carrier base 32; during this replacement operation, the glass carrier control motor does not stop, and combined with the above-mentioned setting of the distance relationship between the output end 8 of the glass carrier control motor, the output end 25 of the recovery drive motor, and the output end 26 of the feeding drive motor, it can ensure that the glass carrier base-glass slide assembly that has completed the collection is smoothly separated, and the replaced glass carrier base-glass slide assembly is smoothly connected.

[0092] The positions of the feeding drive motor and the recycling drive motor can be appropriately set based on the above settings. The glass base 32 is made of engineering plastics with a smooth surface, but in order to prevent the bottom glass base 32 from driving the upper glass base 32 to move and dislocate it during the replacement operation, the height of the discharge port 221 at the bottom of the glass storage barrel 22 is equal to the thickness of one glass base 32, or greater than the thickness of one glass base 32 and less than the thickness of two stacked glass bases 32, and the side of the glass storage barrel 22 is pressed against the upper glass base 32 to prevent it from moving with the lower glass base 32.

[0093] In addition, in order to be suitable for the darkroom environment in the housing 1, the two photoelectric sensors are reflective photoelectric sensors (with their own light source), and a reflective strip can be attached to the front end of the glass base 32 for easy sensing by the photoelectric probe. The output speed of the recovery drive motor can be set relatively high to ensure that the glass base 32 falls into the glass recovery cylinder 21 in a horizontal posture. The glass base 32 is also stacked in the glass recovery cylinder 21. A recovery port can also be opened on the side of the housing 1 to connect to the bottom of the glass recovery cylinder 21. Of course, the glass base-slide assembly can also be replenished and recovered by opening the top cover.

[0094] like Figure 1 and 2In some preferred embodiments shown, the inhalation pollen collector for monitoring allergenic pollen is a vertical structure, with an air inlet 102 disposed on the top of the housing 1, a fan 7 in the lower region thereof, and an exhaust port 103 disposed at the bottom thereof. The air guide 2 is located above the pollen collector 3, and the pollen collector 3 is horizontally movable. The housing 1 with a vertical structure may be a vertical cylindrical structure (such as Figures 1 to 3 As shown), a square tube structure with rounded corners can also be used.

[0095] The utility model also provides a group of test data to illustrate the effect of the inhalation type pollen collector for monitoring allergenic pollen provided by the utility model.

[0096] The experiment compared the pollen data monitored by the inhalation method and the gravity sedimentation method, and used SPSS25.0 software (IBM) for statistical analysis. Spearman correlation analysis was performed on the continuous variables with non-normal distribution. The correlation coefficient (r s ) is 0.8584, p<0.001. Fig.11 and 12 .

[0097] Fig.11 It is a schematic diagram of using GraphPad software to draw scatter plots and perform Spearman correlation analysis on continuous variables with non-normal distribution. Fig.12 This is a schematic diagram of the average daily pollen count using two pollen collection methods, gravity sedimentation and inhalation, in Dongcheng District, Beijing from September 1, 2023 to September 27, 2023.

[0098] Through the applicant's experiments, the suction pollen collector for allergenic pollen monitoring provided by the utility model has the same trend in the number of pollens captured per unit time as the existing gravity sedimentation collector.

[0099] In summary, the utility model provides an inhalation pollen collector for monitoring allergenic pollen, comprising a shell; a fan is provided in the shell, and the shell is provided with an air inlet and an exhaust port; the flow path in which air enters the shell from the air inlet, passes through the fan, and is discharged from the exhaust port is constructed into an air channel; a flow guide hood and a powder collector are provided in the air channel between the air inlet and the fan; the flow guide hood is a funnel-shaped structure, the small opening side of the flow guide hood of the funnel-shaped structure faces the powder collector, and the large opening side of the flow guide hood has a filter; the shell also has a glass slide control motor, which is drive-connected to the pollen collector; the pollen collector has a glass slide, and the surface of the glass slide is coated with a sticky coating. The utility model provides an inhalation-type pollen collector for monitoring allergenic pollen, which has the following advantages: a guide structure for forming an air channel is provided, which can collect pollen in an all-round manner without being affected by airflow and rainfall; a mechanism for automatic replacement of a glass slide base-glass slide assembly is provided, which can realize automatic pollen collection and automatic replacement of glass slides for multiple consecutive days; the pollen carrier is a common glass slide, which is convenient for large-scale purchase and storage; and the overall cost is low.

[0100] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The device and system embodiments described above are merely schematic, in which the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

[0101] The above are only preferred specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An inhalation pollen collector for monitoring allergenic pollen, characterized in that: The invention comprises a housing; a fan is provided in the housing, and the housing is provided with an air inlet and an air outlet; the flow path of air entering the housing from the air inlet, passing through the fan, and being discharged from the air outlet is configured as an air channel; A flow guide cover and a powder collector are arranged in the air passage between the air inlet and the fan; the flow guide cover is a funnel-shaped structure, the small opening side of the flow guide cover of the funnel-shaped structure faces the powder collector, and the large opening side of the flow guide cover is provided with a filter; the powder collector has a glass slide base and a glass slide, the surface of the glass slide has an adhesive coating, and the glass slide is detachably mounted on the glass slide base; The housing also has a glass carrier control motor and a controller, wherein the glass carrier control motor is drivingly connected to the glass carrier base and is used to drive the glass carrier base to cut the air channel; The controller is connected to the glass slide control motor circuit, and the controller is used to control the start and stop of the glass slide control motor.

2. The suction type pollen collector according to claim 1, characterized in that: The powder collector further comprises a guide base, the guide base is slidably connected to the glass carrier base, and the guide base is detachably mounted in the housing; the glass carrier base has a rack for drivingly connecting with the glass carrier control motor; the glass carrier control motor is used to drive the glass carrier base to move relative to the guide base; The guide base is a groove-shaped structure, and a slide rail is provided inside the guide base of the groove-shaped structure, and the glass carrier base cooperates with the slide rail; one side of the guide base has an opening, and the rack corresponds to the position of the opening.

3. The suction type pollen collector according to claim 2, characterized in that: Also included is a top cover, which is detachably mounted in the area of ​​the air inlet of the housing and has a gap with the air inlet; The shell also has a guide tube, a movable support and a support control motor, the guide tube is movably connected to the movable support, the support control motor is drivingly connected to the movable support, the guide cover is connected to the guide tube, and the support control motor can drive the guide cover to approach / move away from the slide; A first air flow meter is provided in the area of ​​the air inlet of the shell; the first air flow meter is connected to the controller circuit and is used to send the air intake flow information of the area of ​​the air inlet to the controller, and the controller is connected to the support control motor circuit; when the air intake flow in the area of ​​the air inlet of the shell is less than a first preset threshold of the controller, the controller sends a first control signal to the support control motor, so that the support control motor drives the air guide cover away from the glass slide.

4. The suction type pollen collector according to claim 2, characterized in that: A rectangular air outlet nozzle is provided on one side of the small opening of the air guide cover, and the air outlet nozzle has a strip-shaped through hole; The air outlet nozzle of the rectangular body structure is provided with notches on both sides of its wide side; the area of ​​the notches is determined by the preset rated ventilation volume; The shell also has a guide tube, a movable support and a support control motor, the guide tube is movably connected to the movable support, the support control motor is drivingly connected to the guide tube, the guide cover is connected to the guide tube, and the support control motor can drive the guide cover to approach / move away from the slide; The shell also has a second air flow meter, and the probe of the second air flow meter is adjacent to the notch; the second air flow meter is connected to the controller circuit, and is used to send ventilation flow information of the notch to the controller, and the controller is connected to the support control motor circuit, when the ventilation flow of the notch is greater than a second preset threshold of the controller, the second air flow meter sends a second control signal to the support control motor, so that the support control motor drives the guide cover to approach the glass slide.

5. The suction type pollen collector according to claim 3 or 4, characterized in that: The air deflector can be detachably mounted on one side end of the movable support; the side of the movable support used to mount the air deflector has an inclination, the edge of the side of the air deflector tube is provided with a plurality of mounting grooves at equal intervals, and the outer side of the air deflector is correspondingly provided with a plurality of protrusions that cooperate with the mounting grooves.

6. The suction-type pollen collector according to claim 1, characterized in that: The exhaust port is located at the side of the shell; the shell also has a movable damper structure for changing the air flow rate of the exhaust port; The active damper structure comprises a frame body with a rectangular frame structure, an active damper and a plurality of driven dampers are arranged in the enclosed area of ​​the frame body, the active damper and the driven damper are arranged in sequence and are movably connected to the frame body, and the active damper and the plurality of driven dampers can rotate relative to the frame body; The active damper is drivingly connected to the driven damper, and the movable damper structure further comprises a damper control motor, and the damper control motor is drivingly connected to the active damper; A third air flow meter is provided in the area of ​​the air inlet of the shell; the third air flow meter is connected to the controller circuit, and is used for sending the air intake flow information of the area of ​​the air inlet to the controller, and the controller is connected to the damper control motor circuit; when the air intake flow of the air inlet of the shell is less than a third preset threshold value of the controller, the controller sends a third control signal to the damper control motor, so that the damper control motor drives the active damper to rotate, thereby driving the driven damper to rotate, thereby increasing the opening area of ​​the enclosed area of ​​the frame.

7. The suction type pollen collector according to claim 2, characterized in that: The housing further comprises a glass recovery cylinder, a glass storage cylinder, a first photoelectric sensor, a second photoelectric sensor, a recovery drive motor and a feeding drive motor; the glass recovery cylinder and the glass storage cylinder are vertical structures, a discharge port is provided on one side of the bottom of the glass storage cylinder, and a recovery port is provided on the top of the glass recovery cylinder; the glass storage cylinder is used to accommodate a plurality of stacked glass bases carrying the glass slides; the first photoelectric sensor, the second photoelectric sensor, the recovery drive motor and the feeding drive motor are respectively connected to the controller by circuits; One side of the guide base is configured as a recovery area, which is connected to the discharge port, and the other side is configured as a loading area, which is connected to the recovery port, and the middle part of the guide base is configured as an operation area; the field of view of the first photoelectric sensor and the output end of the recovery drive motor correspond to each other and are located in the recovery area; the output end of the loading drive motor is used to drive the glass carrier base located at the bottom of the glass carrier storage barrel; the distance between the output end of the glass carrier control motor and the output end of the recovery drive motor is equal to the length of the rack of the glass carrier base, and the distance between the output end of the glass carrier control motor and the output end of the loading drive motor is equal to the length of the rack of the glass carrier base; The field of view of the second photoelectric sensor is located in the working area; When the glass carrier control motor drives the glass carrier base to move relative to the guide base and enter the field of view of the first photoelectric sensor, the first photoelectric sensor sends a fourth control signal to the controller, so that the recovery drive motor drives the glass carrier base to enter the glass carrier recovery cylinder, and also drives the loading drive motor to drive the glass carrier base at the bottom of the glass carrier storage cylinder to move to the working area. When the glass carrier base enters the field of view of the second photoelectric sensor, the second photoelectric sensor sends a fifth control signal to the controller, so that the loading drive motor stops.

8. The suction-type pollen collector according to claim 1, characterized in that: The shell also has a driving wheel moving block, and the end of the driving shaft of the glass-carrying control motor for driving the powder collector is installed on one side of the driving wheel moving block; the other side of the driving wheel moving block has a pulling strip that penetrates the shell, and a compression spring is clamped between the other side of the driving wheel moving block and the inner wall of the shell; The end of the pulling strip extending out of the shell is provided with a pulling head, and the pulling head can rotate relative to the pulling strip; the outer side wall of the shell has a groove part, and the pulling head has a latch for extending into the groove part.

9. The suction-type pollen collector according to any one of claims 2, 3, 4, and 7, characterized in that: The shell has a glass window and an L-shaped rain shield, and the guide base extends into / is withdrawn from the shell through the glass window; the L-shaped rain shield is located above the glass window.

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