Device for collecting downy mildew spores

Abstract

The utility model discloses a downy mildew spore collecting device which comprises a holding assembly, a collecting assembly, a filtering assembly, a catching assembly and a suction assembly, and the holding assembly is sequentially provided with a filtering bin, a catching bin, an air pump bin and a holding part from front to back; the filtering assembly is installed in the filtering bin, the capturing assembly is installed in the capturing bin, the suction assembly is arranged in the air pump bin, the collecting assembly is installed in front of the filtering assembly, and the suction assembly is electrically connected with the power source. According to the device, the holding assembly, the collecting assembly, the filtering assembly, the capturing assembly and the suction assembly are integrated, so that efficient collection of downy mildew spores is achieved. Due to the innovative structural design, the collecting process is quicker and more convenient, and the collecting efficiency is remarkably improved. According to the device, the combination of the filtering assembly and the capturing assembly is adopted, the collection concentration of sporangium is effectively improved, an additional centrifugal concentration step is not needed, the operation process is simplified, and time and cost are saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of plant pathology research and disease control technology relates to downy mildew spore collection device, especially suitable for high -efficient collection downy mildew spore cyst, to satisfy plant disease research, pathogenic bacteria identification, drug effect test and biological control etc. Many aspects demand. BACKGROUND

[0002] Downy mildew is a kind of widely harmful fungus disease of various crops, and its pathogenic bacteria are downy mildew, which mainly spreads and invades through spore cyst. In plant pathology research, disease monitoring and new type of control agent research and development, obtaining high concentration and high quality downy mildew spore cyst suspension is a crucial basic link. The traditional downy mildew spore cyst collection method is to use brush to brush the spore cyst on the back of leaf, and this method has many disadvantages.

[0003] Firstly, the collection efficiency of brush brushing method is extremely low. Since downy mildew spore cyst usually adheres to the back of leaf and is densely distributed, careful operation is needed when using brush to brush, to avoid damaging leaf and missing spore cyst. This makes it only possible to collect 2-4 leaves per minute, which is time-consuming and laborious for large-scale collection, greatly limiting the progress of related research and test.

[0004] Secondly, it is difficult to prepare high-concentration spore cyst suspension by brush brushing method. Due to the low collection efficiency, the total amount of spore cyst obtained is limited, and when high-concentration spore cyst suspension is needed for experiment, subsequent treatment means such as centrifugal concentration is often needed. This not only increases the operation steps and time cost, but also may cause certain damage to spore cyst in the centrifugal process, affecting its activity and quality, and further affecting the accuracy and reliability of subsequent experiment.

[0005] In addition, the brush brushing method requires higher technical level of the operator, and the collection effect of different operators may have great difference, which is easy to affect the repeatability and stability of experimental results. Moreover, the brush may cause physical damage to the leaf in the brushing process, and further affect the normal growth and development of the plant, which is not conducive to some valuable experimental materials or plants in the critical growth stage.

[0006] With the deepening of plant pathology research and the higher requirements of modern agriculture on disease control technology, it is particularly urgent to develop a device that can efficiently, stably and non-destructively collect Peronophythora sojae sporangia. At present, although there have been some research and attempts in the field of plant pathogen collection, there is no report on a high-efficiency device specially designed for collecting Peronophythora sojae sporangia. Therefore, the present application aims to provide a novel Peronophythora sojae spore collection device to solve the problems of low collection efficiency, difficulty in improving sporangia concentration, complex operation, and large damage to leaves in the prior art, and to provide strong technical support for the research and control of Peronophythora sojae. Content of the utility model

[0007] Therefore, the utility model aims at providing a Peronophythora sojae spore collection device, which realizes efficient collection of 10-12 leaves per minute through innovative design and optimized structure, significantly improves the acquisition amount of Peronophythora sojae sporangia, can directly prepare a relatively high-concentration sporangia suspension without the aid of centrifugal concentration, avoids damage to leaves, ensures the activity and quality of sporangia, and has important application value and broad market prospect.

[0008] The inventor has made long-term exploration and attempts, and has made repeated experiments and efforts to reform and innovate to solve the above technical problems. The technical scheme provided by the utility model is to provide a Peronophythora sojae spore collection device, which comprises a holding assembly, a collection assembly, a filtering assembly, a capturing assembly and a suction assembly. The holding assembly is sequentially provided with a filtering bin, a capturing bin, a gas pump bin and a holding part from front to back. The filtering assembly is installed in the filtering bin, the capturing assembly is installed in the capturing bin, the suction assembly is arranged in the gas pump bin, the collection assembly is installed in front of the filtering assembly, and the suction assembly is electrically connected with a power supply.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] The device realizes efficient collection of Peronophythora sojae spores by integrating the holding assembly, the collection assembly, the filtering assembly, the capturing assembly and the suction assembly. The innovative structure design makes the collection process faster and more convenient, and significantly improves the collection efficiency, which can collect 10-12 leaves per minute, much higher than 2-4 leaves per minute of the traditional method. The combination of the filtering assembly and the capturing assembly effectively improves the collection concentration of sporangia, and the device does not need an additional centrifugal concentration step, simplifies the operation process, and saves time and cost.

[0011] On the basis of the above technical scheme, the utility model can also be improved as follows:

[0012] Further, the collection assembly comprises a collection funnel, the large-diameter end of the collection funnel is uniformly provided with a brush and a suction hole, and the small-diameter end of the collection funnel is connected with the filtering assembly.

[0013] Compared with the prior art, the beneficial effects of adopting the above further technical solutions are:

[0014] Through the uniform setting of the brush and the suction hole on the collecting funnel, comprehensive collection and effective guidance of the downy mildew spores are realized, the uniformity and efficiency of the collection are improved, the collection process is simplified, and the dependence on the technical requirements of the operator is reduced.

[0015] On the basis of the above technical solutions, the utility model can also be improved as follows:

[0016] Further, the brush is made of flexible material, and the flexible material includes one of natural rubber, silica gel, nylon or polypropylene.

[0017] Compared with the prior art, the beneficial effects of adopting the above further technical solutions are:

[0018] The brush made of flexible material can improve the collection efficiency and quality of the spore sac while ensuring gentle and non-invasive collection of the spore sac, and the adaptability of the device to different leaf types is enhanced.

[0019] On the basis of the above technical solutions, the utility model can also be improved as follows:

[0020] Further, the filter assembly includes a filter box, an air inlet pipe and an air outlet pipe, and the filter box is provided with a filter sheet or a filter screen; the air inlet pipe is connected with the small-diameter end of the collecting funnel.

[0021] Compared with the prior art, the beneficial effects of adopting the above further technical solutions are:

[0022] Through the setting of the filter assembly, impurities in the air can be effectively removed, and only pure spore sacs are sucked into the capturing assembly, so that the purity and quality of the spore sac collection are improved.

[0023] On the basis of the above technical solutions, the utility model can also be improved as follows:

[0024] Further, the capturing assembly includes a cylinder, an air inlet end plate, an air outlet end plate and a middle column, the air inlet end plate is provided with an air inlet hole, the air outlet end plate is provided with an air outlet hole, the middle column is provided with a capturing sheet, and an adhesive is coated on the windward surface of the capturing sheet; the air inlet hole is connected with the air outlet pipe, and the air outlet hole is connected with the suction assembly.

[0025] Compared with the prior art, the beneficial effects of adopting the above further technical solutions are:

[0026] Through the structural design of the capturing assembly and the use of the adhesive, efficient capturing and collecting of the sporangium are realized, while the mildness of the collecting process is ensured, the damage to the sporangium is avoided, and the collecting efficiency and the activity maintenance of the sporangium are improved.

[0027] Based on the above technical scheme, the utility model still can make following improvement:

[0028] Further, the capturing sheet is a spiral structure or a disc structure, and a strip hole is arranged on the disc.

[0029] Compared with the prior art, the beneficial effects of the above further technical scheme are:

[0030] The spiral or disc structure of the capturing sheet cooperates with the strip hole design, so that the kinetic characteristics of airflow passing through the capturing sheet can be optimized, the spore capturing efficiency is improved, the damage of airflow to the spores is reduced, and thus the collecting effect and the integrity of the sporangium are improved.

[0031] Based on the above technical scheme, the utility model still can make following improvement:

[0032] Further, the adhesive is skimmed milk powder.

[0033] Compared with the prior art, the beneficial effects of the above further technical scheme are:

[0034] As the adhesive, the skimmed milk powder can not only effectively capture and adhere the sporangium and improve the collecting efficiency, but also has no toxic effect on the sporangium due to its natural composition, and helps to maintain the activity and integrity of the sporangium, and has low cost and is easy to obtain and use.

[0035] Based on the above technical scheme, the utility model still can make following improvement:

[0036] Further, the holding assembly is a gun-shaped structure, the filter bin, the capturing bin and the air pump bin are located above the holding part, and the power supply is located in the holding part or below the holding part.

[0037] Compared with the prior art, the beneficial effects of the above further technical scheme are:

[0038] The modular design and the gun-shaped structure make the operation more humanized, are convenient for carrying and on-site use, and are suitable for the collection of downy mildew spores under various environmental conditions.

[0039] Based on the above technical scheme, the utility model still can make following improvement:

[0040] Further, the capturing bin is further provided with a movable pressing plate for fixing the capturing assembly, and an elastic member is further arranged between the movable pressing plate and the air pump bin.

[0041] Preferably, the elastic member is a torsion spring.

[0042] Compared with the prior art, the beneficial effects of adopting the further technical solutions are:

[0043] The cooperation of the movable pressing plate and the elastic member (preferably a torsion spring) makes the disassembly and assembly of the capturing assembly more convenient, facilitating the replacement or maintenance of the capturing sheet. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0045] Figure 1 is a rear view structural schematic diagram of a preferred embodiment of the present application peronospora spore collecting device.

[0046] Figure 2 is a right view structural schematic diagram of Figure 1 .

[0047] Figure 3 is a perspective structural schematic diagram of Figure 1 .

[0048] Figure 4 is an A-A cross-sectional view of Figure 1 .

[0049] Figure 5 is a perspective structural schematic diagram of the capturing assembly of a preferred embodiment of the present application peronospora spore collecting device.

[0050] Figure 6 is a perspective structural schematic diagram of the disc structure capturing sheet of another preferred embodiment of the present application peronospora spore collecting device.

[0051] The marks in the drawings are as follows:

[0052] 100 gripping assembly,

[0053] 110 filter bin,

[0054] 120 capturing bin,

[0055] 130 air pump bin,

[0056] 140 gripping portion,

[0057] 200 collecting assembly,

[0058] 210 collection funnel,

[0059] 220 brush,

[0060] 230 suction hole,

[0061] 300 filter assembly,

[0062] 310 filter box,

[0063] 320 air inlet pipe,

[0064] 330 air outlet pipe,

[0065] 400 capture assembly,

[0066] 410 barrel,

[0067] 420 air inlet end plate,

[0068] 421 air inlet hole,

[0069] 430 air outlet end plate,

[0070] 431 air outlet hole,

[0071] 440 middle column,

[0072] 441 capture sheet,

[0073] 500 suction assembly,

[0074] 600 power supply. DETAILED DESCRIPTION

[0075] The present application will be described with respect to the following drawings in which:

[0076] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0077] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, thus, once an item is defined in one drawing, it can not be further defined and explained in the subsequent drawings.

[0078] Reference will now be made to the drawings, wherein: Figures 1 to 6The embodiment describes a kind of downy mildew spore collection device, including holding component 100, collection component 200, filter component 300, capture component 400 and suction component 500.

[0079] The holding component 100 is the operation basis of the whole device, and is designed as a gun-shaped structure according to the principle of ergonomics, which is convenient for the operator to hold and operate, can effectively reduce hand fatigue during long time use, and improve work efficiency.

[0080] The holding component 100 is sequentially provided with filter bin 110, capture bin 120, air pump bin 130 and holding part 140 from front to back, which provides stable mounting position and support frame for filter component 300, capture component 400, suction component 500 and the like, to ensure that each component works closely and cooperatively during operation.

[0081] Specifically, the filter component 300 is installed in the filter bin 110, the capture component 400 is installed in the capture bin 120, the suction component 500 is arranged in the air pump bin 130, the collection component 200 is installed in front of the filter component 300, and the suction component 500 is electrically connected with the power supply 600.

[0082] The power supply 600 is located in or below the holding part 140, which is convenient for the operator to check and replace the power supply 600 at any time, and also provides good protection for the power supply 600, preventing it from being damaged by external impact during use and ensuring stable operation of the device.

[0083] The collection component 200 includes a collection funnel 210, the large-diameter end of the collection funnel 210 is uniformly provided with a brush 220 and a suction hole 230, and the small-diameter end of the collection funnel 210 is connected with the filter component 300. The collection component 200 is the key part of the device contacting the target blade, and the large-diameter end of the collection funnel 210 is uniformly provided with a brush 220 and a suction hole 230, which can quickly and efficiently collect the downy mildew spore cysts on the back of the blade. The brush 220 is made of flexible material, such as natural rubber, silicone, nylon or polypropylene, which can gently brush the spore cysts and avoid damaging the blade and spore cysts, and can ensure the thoroughness and uniformity of collection. The small-diameter end of the collection funnel 210 is connected with the filter component 300, and through reasonable structural design, the collected spore cysts are smoothly guided to the filter component 300 together with air, laying a foundation for subsequent filtering and capturing process, and ensuring the coherence and efficiency of the whole collection process.

[0084] The filter assembly 300 comprises a filter box 310, an air inlet pipe 320 and an air outlet pipe 330, wherein the filter box 310 is internally provided with a filter sheet or a filter screen; the air inlet pipe 320 is connected with the small-diameter end of the collection funnel 210. The pore size of the filter screen is equivalent to that of the Peronospora spores sac, so as to ensure that the Peronospora spores sac can pass through smoothly and intercept particulate matters obviously larger than the Peronospora spores sac. The filter assembly 300 is installed in the filter bin 110, and the core component, the filter box 310, is internally provided with a filter sheet or a filter screen, which can effectively remove the particulate matters such as dust and impurities mixed in the air, so as to ensure that only pure air and spore sacs can pass through, improve the purity of the collected spore sacs, and be beneficial to the accuracy and reliability of subsequent experiments. The air inlet pipe 320 is connected with the small-diameter end of the collection funnel 210, and the air outlet pipe 330 is connected with the capture assembly 400, so as to form a complete air flow channel, so that the air can smoothly flow from the collection assembly 200 to the capture assembly 400, and the stability and continuity of the air flow in the whole device are ensured, and the collection efficiency is improved. Referring to Figure 4 In the embodiment, the air inlet pipe 320 and the air outlet pipe 330 are eccentrically arranged, which skillfully changes the flow path of the air flow in the filter assembly 300, so that the air flow passes through the filter sheet or the filter screen in a more gentle and uniform manner. When the air enters the air inlet pipe 320 from the collection funnel 210, due to the eccentric position of the air inlet pipe 320, the air flow will naturally disperse when entering the filter box 310, so as to avoid concentrated impact on a certain point of the filter sheet or the filter screen, thereby reducing the direct impact force on the filter material. Similarly, when the filtered air passes through the air outlet pipe 330 to be discharged, the eccentrically arranged air outlet pipe 330 can guide the air flow to flow to the capture assembly 400 stably, further reducing the reverse impact of the air flow on the filter sheet or the filter screen. This design not only effectively protects the filter sheet or the filter screen and prolongs the service life thereof, but also ensures the stability of the filtering effect, so that the device can continuously and efficiently remove impurities in the air during a long time of operation, provide purer air flow for the subsequent capture assembly 400, and further improve the efficiency and quality of the collection of Peronospora spores.

[0085] The capture assembly 400 comprises a cylinder body 410, an air inlet end plate 420, an air outlet end plate 430 and a middle column 440, wherein the air inlet end plate 420 is provided with an air inlet hole 421, the air outlet end plate 430 is provided with an air outlet hole 431, the middle column 440 is provided with a capture sheet 441, and an adhesive is coated on the windward surface of the capture sheet 441; the air inlet hole 421 is connected with the air outlet pipe 330, and the air outlet hole 431 is connected with the suction assembly 500.

[0086] The capturing assembly 400 is the key part to realize efficient trapping of sporangia. The air inlet end plate 420, the air outlet end plate 430 and the middle column 440 are installed in the barrel 410. The windward surface of the capturing sheet 441 on the middle column 440 is coated with a skimmed milk powder adhesive, which can accurately capture the sporangia entering with the airflow and firmly adhere them to the capturing sheet 441, greatly improving the trapping efficiency and the collection amount of sporangia.

[0087] The capturing sheet 441 can be designed as a spiral structure (as shown in Figure 4 and Figure 5 ) or a disc structure (as shown in Figure 6 ). The disc structure is provided with a strip hole. This structure can optimize the flow characteristics of the airflow in the capturing assembly 400, reduce the impact and damage of the airflow on the sporangia, and also help to improve the trapping efficiency, ensuring that the collected sporangia maintain good activity and integrity.

[0088] The spiral structure design prolongs the contact path of the airflow with the skimmed milk powder, increasing the probability of trapping downy mildew spores.

[0089] When the capturing sheet 441 is in a disc structure, a plurality of capturing sheets 441 are fixedly arranged on the middle column 440, and the strip holes of adjacent two capturing sheets 441 are arranged alternately. In this embodiment, as shown in Figure 6 , when the capturing sheet 441 is in a disc structure, the strip hole is arranged along the diameter direction of the disc. The strip holes of adjacent two capturing sheets 441 are arranged alternately, further increasing the path length of the airflow in the capturing assembly 400. In this way, the airflow changes direction multiple times when passing through multiple capturing sheets 441, prolonging the contact time with the capturing sheet 441, thereby increasing the probability of trapping sporangia. This staggered strip hole design not only optimizes the flow characteristics of the airflow, but also enhances the trapping efficiency, ensuring that more sporangia can be effectively trapped and collected.

[0090] In one embodiment, the air inlet end plate 420, the middle column 440 and the capturing sheet 441 are integrally arranged, and the barrel 410 and the air outlet end plate 430 are integrally arranged. After completing the trapping task, the capturing assembly 400 is taken out from the capturing chamber 120, and then the capturing sheet 441 is taken out from the barrel 410 to extract the downy mildew spores on the capturing sheet 441.

[0091] The active pressing plate is provided between the capturing assembly 400 and the air pump bin 130, and an elastic member is further provided between the active pressing plate and the air pump bin 130. The elastic member is preferably a torsion spring. The combination of the components provides great convenience for the installation and dismounting of the capturing assembly 400. When the capturing assembly 400 is installed, the operator can easily place the capturing assembly 400 between the active pressing plate and the filtering assembly 300. The active pressing plate can tightly press and fix the capturing assembly 400 in the capturing bin 120 by the elastic action of the torsion spring, so that the capturing assembly 400 is stable and reliable during the working process and cannot be displaced or loosened due to vibration or air flow impact. When the capturing assembly 400 needs to be dismounted for maintenance, cleaning or replacement, the operator only needs to overcome the elastic force of the torsion spring and then lift the active pressing plate upward, so that the capturing assembly 400 can be quickly released and taken out of the capturing bin 120. The whole installation and dismounting process does not need to use complex tools or complicated operation steps, greatly improves the working efficiency and reduces the maintenance cost, and is similar to the installation of a dry battery, which is simple, convenient and easy to use.

[0092] The suction assembly 500 is installed in the air pump bin 130 and is electrically connected with the power supply 600. The main function of the suction assembly 500 is to generate negative pressure to provide power support for the whole collection process. The suction assembly 500 can be a vacuum pump or a negative pressure pump. Through the suction action, air flows from the collection funnel 210, passes through the filtering assembly 300 and the capturing assembly 400 in sequence, and is finally discharged from the device, forming a stable air flow circulation system, which ensures that the spore sacs can be smoothly collected from the leaf surface and transported into the capturing assembly 400.

[0093] The power supply 600 is a movable power supply, which is preferably a rechargeable battery such as a rechargeable lithium battery. The power supply 600 is connected with the suction assembly 500 through an electric circuit with a switch, so that the operator can conveniently control the start and stop of the suction assembly 500. When the spore collection is needed, the operator only needs to press the switch, so that the power supply 600 provides power for the suction assembly 500 to start working and generate negative pressure to collect the spore sacs. When the collection work is completed or needs to be paused, the operator presses the switch again to cut off the electric circuit between the power supply 600 and the suction assembly 500, so that the suction assembly 500 stops working.

[0094] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0095] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0096] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0097] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0098] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A device for collecting Peronospora spores, characterized in that The application relates to a dust catcher, which comprises a holding assembly, a collecting assembly, a filtering assembly, a capturing assembly and a suction assembly.

2. The downy mildew spore collection device of claim 1, wherein, The collecting assembly comprises a collecting funnel, the large-diameter end of which is uniformly provided with a brush and a suction hole, and the small-diameter end of which is connected with the filtering assembly.

3. The downy mildew spore collection device of claim 2, wherein, The brush is made of flexible material, which comprises one of natural rubber, silica gel, nylon and polypropylene.

4. The downy mildew spore collection device of claim 2, wherein, The filtering assembly comprises a filtering box, an air inlet pipe and an air outlet pipe, and the filtering box is internally provided with a filter sheet or a filter screen; the air inlet pipe is connected with the small-diameter end of the collecting funnel.

5. The Peronospora spore collection device of claim 4, wherein, The capturing assembly comprises a cylinder, an air inlet end plate, an air outlet end plate and a middle column, the air inlet end plate is provided with an air inlet hole, the air outlet end plate is provided with an air outlet hole, the middle column is provided with a capturing sheet, and the windward surface of the capturing sheet is coated with an adhesive; the air inlet hole is connected with the air outlet pipe, and the air outlet hole is connected with the suction assembly.

6. The downy mildew spore collection device of claim 5, wherein, The capturing sheet has a spiral structure or a disc structure, and the disc is provided with a strip hole.

7. The downy mildew spore collection device of claim 5, wherein, The adhesive is skimmed milk powder.

8. The downy mildew spore collection device of claim 1, wherein, The holding assembly has a gun-shaped structure, the filtering box, the capturing box and the air pump box are located above the holding part, and the power supply is located in the holding part or below the holding part.

9. The downy mildew spore collection device of claim 1, wherein, The capturing box is further provided with a movable pressing plate for fixing the capturing assembly, and an elastic element is further arranged between the movable pressing plate and the air pump box.

10. The downy mildew spore collection device of claim 9, wherein, The elastic element is a tower spring.

Images