Pollen sampling kit with removable slide

Abstract

The invention discloses a pollen sampling assembly with a movable glass slide, which comprises a bottom plate and a pollen sampling chamber formed by buckling a glass slide cover and a buffer plate, wherein a vertical plate extending in a vertical direction is mounted on the bottom plate, the glass slide cover is fixed on the vertical plate, and a linear guide rail slidingly matched with the buffer plate is arranged on the vertical plate below the glass slide cover, a through-type stepping motor buckled with / separated from the buffer plate and the glass slide cover is mounted on the bottom plate; a glass slide placing table sliding relative to the buffer plate in an X-axis direction is mounted on the inner surface of the buffer plate; a driving mechanism sliding with the glass slide placing table is fixed on the glass slide cover; an air inlet pipe for introducing outside air into and striking the glass slide is connected to the top of the glass slide cover, and an air exhaust hole connected with an exhaust fan is mounted on the side wall of the glass slide cover.

Description

Technical Field

[0001] The invention relates to pollen detection technology, and in particular to a pollen sampling component with a movable glass slide. Background Art

[0002] Plants in bloom produce pollen, which is 15-30 μm in diameter, large in quantity and light in weight. It is easy to attach to aerosols and spread through the air, generally known as airborne pollen. When the allergenic protein components in airborne pollen are inhaled by the human body, symptoms of pollen allergy such as runny nose, tears, itchy skin, and asthma may occur.

[0003] In the prior art, a pollen online monitoring system (CN201510731452.1) is used to monitor pollen, and a pneumatic control valve is used to control the impact sampler and the gasket to be pressed tightly to ensure the normal sampling of the sampling pump. When this method is used for sealed sampling, since pollen is collected in a fixed small area each time, for example, 24 samplings are required per day, the impact sampler needs to be raised or lowered frequently in a day to achieve multiple sealed samplings per day; since the impact sampler needs to contact the sampling membrane belt during sealing, the sampled membrane belt needs to be moved forward a certain distance after each sampling is completed, so as to prevent the impact sampler from pressing on the sampling membrane belt with pollen collected, and there are problems such as large consumption of the sampling membrane belt and inability to archive the collected samples. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the pollen sampling assembly with a movable glass slide provided by the present invention solves the problem that the impact sampler of the prior art needs to be frequently opened and closed during sealed sampling, which results in complicated operation.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0006] Provided is a pollen sampling assembly with a movable glass slide, comprising a bottom plate and a pollen sampling chamber formed by buckling a glass slide cover and a buffer plate, a vertical plate extending in a vertical direction is mounted on the bottom plate, the glass slide cover is fixed on the vertical plate, a linear guide rail slidingly matched with the buffer plate is arranged on the vertical plate below the glass slide cover, and a through-type stepping motor is mounted on the bottom plate to buckle / separate the buffer plate from the glass slide cover;

[0007] A glass slide table is installed on the inner surface of the buffer plate and slides relative to the buffer plate along the X-axis direction; a driving mechanism is fixed on the glass slide cover to slide with the glass slide table; the top of the glass slide cover is connected to an air inlet pipe that introduces outside air and impacts the glass slide, and an exhaust hole connected to an exhaust fan is installed on the side wall of the glass slide cover.

[0008] Furthermore, a pressure plate is connected to the lower surface of the buffer plate through a plurality of optical axis screws, and the diameter of the hole on the pressure plate for the optical axis screw to pass through is larger than the diameter of the optical axis screw; the pressure plate is fixedly connected to the lead screw of the through-type stepper motor, and a spring is mounted on the optical axis screw between the pressure plate and the buffer plate.

[0009] Furthermore, the driving mechanism includes a driving motor fixed to the outer surface of the side wall of the glass slide cover, the screw shaft of the driving motor passes through the sealing plate and enters the glass slide cover, a screw nut is mounted on the screw shaft, and the screw nut has a limit plate extending toward the buffer plate; a limit groove is provided on the side of the glass slide placement table, and when the buffer plate is buckled with the glass slide cover, the limit plate extends into the limit groove.

[0010] Furthermore, the glass slide placement table includes a sliding block and a glass slide limiting plate fixed on the sliding block. The lower surface of the sliding block adjacent to the vertical plate is provided with a strip groove along the X direction that cooperates with the linear guide rail on the bottom plate. The glass slide limiting plate is provided with a groove body for placing the glass slide, and the bottom of the groove body has a hollow structure for avoiding the claws for transporting the glass slide; the limiting groove is provided on the extension plate of the glass slide limiting plate toward the driving motor side.

[0011] Furthermore, the height of the sliding block is greater than the thickness of the gripper for transporting the slide.

[0012] Furthermore, the upper portion of the limiting groove is configured as a trumpet mouth that widens outward, the wall surface of the lower end thereof is perpendicular to the glass slide placement table, and the width of the lower end is equal to the thickness of the limiting plate.

[0013] Furthermore, a magnet is embedded on the side of the lead screw nut opposite to the limit plate, a Hall sensor electrically connected to the control module is installed on the side wall of the slide cover, and the magnet and the Hall sensor cooperate to limit the movement of the lead screw nut.

[0014] Furthermore, a rectangular sampling nozzle is connected to the end of the air inlet pipe located in the pollen sampling chamber.

[0015] The beneficial effects of the present invention are as follows: the present invention adopts a glass slide cover and a buffer plate to form a pollen sampling chamber, and a glass slide is placed in the pollen sampling chamber for pollen collection. During pollen collection, the glass slide can be moved by a driving mechanism, and pollen from different periods of time can be collected in different areas of the glass slide. In this way, there is no need to frequently open the pollen collection chamber, and this can also ensure that the environment of the pollen collection area is consistent within a period of time (such as one day), thereby ensuring the collection quality of pollen.

[0016] When forming a sealed pollen sampling chamber, this solution, combined with a through-type stepper motor, can quickly realize the lifting and lowering of the buffer plate to achieve the rapid placement and removal of the glass slide; when the buffer plate is in full contact with the glass slide cover, the through-type stepper motor continues to move upward with the pressure plate to compress the spring. The compression force generated by the spring can apply a certain pressure to the buffer plate to improve the sealing of the pollen sampling chamber, thereby preventing external air from leaking into the pollen sampling chamber and contaminating the collected glass slide sample, or causing the actual flow at the rectangular nozzle to fail to reach the set flow value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional view of the pollen sampling assembly when the buffer plate is in an open state.

[0018] Figure 2 This is a cross-sectional view of the pollen sampling assembly when the buffer plate is in the open state.

[0019] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0020] Among them, 1. Pollen sampling chamber; 11. Glass slide cover; 111. Exhaust hole; 12. Buffer plate; 121. Optical axis screw; 122. Pressure plate; 13. Glass slide placement table; 131. Limiting groove; 132. Sliding block; 133. Glass slide limiting plate; 14. Inlet pipe; 15. Hall sensor; 2. Bottom plate; 21. Vertical plate; 22. Through-type stepping motor; 3. Driving mechanism; 31. Driving motor; 32. Screw shaft; 33. Screw nut; 331. Limiting plate. DETAILED DESCRIPTION

[0021] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0022] like Figure 1 As shown, the pollen sampling assembly with a movable glass slide provided in the present scheme includes a base plate 2 and a pollen sampling chamber 1 formed by snapping a glass slide cover 11 and a buffer plate 12, a vertical plate 21 extending in a vertical direction is mounted on the base plate 2, the glass slide cover 11 is fixed on the vertical plate 21, and a linear guide rail slidingly matched with the buffer plate 12 is arranged on the vertical plate 21 below the glass slide cover 11, and a through-type stepping motor 22 is mounted on the base plate 2 for snapping / separating the buffer plate 12 with the glass slide cover 11.

[0023] A glass slide table 13 is installed on the inner surface of the buffer plate 12 and slides relative to the buffer plate 12 along the X-axis direction; a driving mechanism 3 is fixed on the glass slide cover 11 and slides with the glass slide table 13; the top of the glass slide cover 11 is connected to an air inlet pipe that introduces external air and impacts the glass slide, and the end of the air inlet pipe located in the pollen sampling chamber 1 is connected to a rectangular sampling nozzle; an exhaust hole 111 connected to an exhaust fan is installed on the side wall of the glass slide cover 11.

[0024] like Figure 3 As shown, the lower surface of the buffer plate 12 is connected to a pressure plate 122 via a plurality of optical axis screws 121, and the diameter of the hole on the pressure plate 122 for the optical axis screw 121 to pass through is larger than the diameter of the optical axis screw 121; the pressure plate 122 is fixedly connected to the lead screw of the through-type stepping motor 22, and a spring is mounted on the optical axis screw 121 between the pressure plate 122 and the buffer plate 12.

[0025] After the above structure is adopted in this scheme, a power component (through-type stepping motor 22) can drive the step-by-step movement of the two components, which can not only ensure the accurate alignment and fastening of the glass slide cover 11 and the buffer plate 12, but also improve the sealing of the pollen sampling chamber 1 by applying pressure to the fastened buffer plate 12.

[0026] like Figure 2 As shown, the driving mechanism 3 includes a driving motor 31 fixed to the outer surface of the side wall of the glass cover 11, the screw shaft of the driving motor 31 passes through the sealing plate and penetrates into the glass cover 11, a screw nut 33 is mounted on the screw shaft 32, and the screw nut 33 has a limit plate 331 extending toward the buffer plate 12; a limit groove 131 is provided on the side of the glass slide placement table 13, and when the buffer plate 12 is buckled with the glass cover 11, the limit plate 331 extends into the limit groove 131.

[0027] In this solution, the driving mechanism 3 and the parts that need to be moved by it are arranged on two split structures. In this way, when the through-type stepper motor 22 is working, it only needs to move the parts with relatively light mass, and the through-type stepper motor 22 with relatively large power is not needed, which reduces the equipment cost investment to a certain extent; furthermore, in this solution, the driving motor 31 is arranged on the outside of the glass cover 11, which can prevent pollen from adhering to the driving motor 31 and affecting the driving motor 31, and can also greatly reduce the internal volume of the pollen sampling chamber 1.

[0028] When the glass slide placement table 13 is moved, the present solution uses the ingenious coordination between the limiting groove 131 and the limiting plate 331, which are in contact but not fixed, so that the glass slide placement table 13 located on the buffer plate 12 can move quickly in coordination with the screw shaft 32. When the buffer plate 12 descends, the limiting plate 331 can be quickly separated from the limiting groove 131 without damaging the structure of the screw shaft 32.

[0029] During implementation, the present scheme preferably comprises a glass slide placement table 13 including a sliding block 132 and a glass slide limiting plate 133 fixed on the sliding block 132, wherein the lower surface of the sliding block 132 adjacent to the vertical plate 21 is provided with a strip groove along the X direction which cooperates with the linear guide rail on the bottom plate 2, and the glass slide limiting plate 133 is provided with a groove body for placing the glass slide, and the bottom of the groove body has a hollow structure for avoiding the gripper for transporting the glass slide; the limiting groove 131 is provided on the extension plate of the glass slide limiting plate 133 toward the driving motor 31 side; wherein the height of the sliding block 132 is greater than the thickness of the gripper for transporting the glass slide.

[0030] The linear guide rail is installed tightly against the wall of the strip groove, and a certain friction resistance will be generated after installation to prevent the sliding block 132 from moving due to slight shaking and affecting the positioning of the limit groove. Limits are set at both ends of the linear guide rail on the base plate 2 to prevent the sliding block 132 from falling off.

[0031] The sliding block 132 can ensure a certain distance between the glass slide limiting plate 133 and the buffer plate 12, so that the gripper for transporting the glass slide can smoothly enter under the glass slide limiting plate 133 to place the glass slide in the open tank.

[0032] During implementation, the present scheme preferably sets the upper part of the limit groove 131 into a trumpet mouth that widens outward, the wall surface of the lower end is perpendicular to the glass slide placement table 13, and the width of the lower end is equal to the thickness of the limit plate 331; the upper end structure can ensure that the limit plate 331 accurately enters the limit groove 131, and the lower structure can prevent the glass slide placement table 13 and the screw nut 33 from loosening during the movement, which affects the precise control of the displacement of the slide.

[0033] During implementation, this solution preferably has a magnet embedded on the side of the lead screw nut 33 opposite to the limit plate 331 , and a Hall sensor 15 electrically connected to the control module is installed on the side wall of the slide cover 11 , and the magnet and the Hall sensor 15 cooperate to limit the movement of the lead screw nut 33 .

[0034] In summary, the pollen sampling assembly with a movable glass slide provided in this scheme can collect pollen from different periods to different areas of the glass slide by moving the glass slide, without the need to frequently open the pollen sampling chamber 1. This way, the internal environment is consistent, ensuring the consistency of pollen collected in each collection area on the glass slide.

Claims

1. A pollen sampling assembly with a movable glass slide, characterized in that: It comprises a bottom plate and a pollen sampling chamber formed by buckling a glass cover and a buffer plate, the bottom plate is provided with a vertical plate extending in a vertical direction, the glass cover is fixed on the vertical plate, and a linear guide rail slidingly matched with the buffer plate is arranged on the vertical plate below the glass cover, and a through-type stepping motor is installed on the bottom plate to buckle / separate the buffer plate from the glass cover; The inner surface of the buffer plate is provided with a glass slide placing table which slides relative to the buffer plate along the X-axis direction; the glass slide cover is fixed with a driving mechanism which slides the glass slide placing table; the top of the glass slide cover is connected with an air inlet pipe which introduces outside air and impacts the glass slide, and the side wall of the glass slide cover is provided with an air exhaust hole connected with an exhaust fan; The driving mechanism comprises a driving motor fixed to the outer surface of the side wall of the glass slide cover, the screw shaft of the driving motor passes through the sealing plate and penetrates into the glass slide cover, the screw shaft is sleeved with a screw nut, and the screw nut has a limit plate extending toward the buffer plate; a limit groove is arranged on the side of the glass slide placement table, and when the buffer plate is buckled with the glass slide cover, the limit plate extends into the limit groove; The glass slide placement table includes a sliding block and a glass slide limiting plate fixed on the sliding block. The lower surface of the sliding block adjacent to the vertical plate is provided with a strip groove along the X direction that cooperates with the linear guide rail on the bottom plate. The glass slide limiting plate is provided with a groove body for placing the slide glass, and the bottom of the groove body has a hollow structure for avoiding the gripper for transporting the slide glass; the limiting groove is provided on the extension plate of the glass slide limiting plate toward the driving motor side.

2. The pollen sampling assembly with a movable glass slide according to claim 1, characterized in that: The lower surface of the buffer plate is connected to a pressure plate via a plurality of optical axis screws, and the diameter of the hole on the pressure plate for the optical axis screw to pass through is larger than the diameter of the optical axis screw; the pressure plate is fixedly connected to the lead screw of the through-type stepping motor, and a spring is mounted on the optical axis screw between the pressure plate and the buffer plate.

3. The pollen sampling assembly with a movable glass slide according to claim 1, characterized in that: The height of the sliding block is greater than the thickness of the gripper for transporting the slide glass.

4. The pollen sampling assembly with a movable glass slide according to claim 1, characterized in that: The upper part of the limiting groove is configured as a trumpet mouth that widens outwards, the wall surface of the lower end thereof is perpendicular to the glass slide placement table, and the width of the lower end is equal to the thickness of the limiting plate.

5. The pollen sampling assembly with a movable glass slide according to claim 1, characterized in that: A magnet is embedded on the side of the lead screw nut opposite to the limiting plate, a Hall sensor electrically connected to the control module is installed on the side wall of the glass cover, and the magnet and the Hall sensor cooperate to limit the movement of the lead screw nut.

6. The pollen sampling assembly with a movable glass slide according to any one of claims 1 to 5, characterized in that: The end of the air inlet pipe located in the pollen sampling chamber is connected with a rectangular sampling nozzle.

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