Automatic Detection Device for Microplastics in Water

Abstract

The present invention discloses an automatic detection device for microplastics in water, comprising: a detection box with an open top; a detection track fixedly arranged above the detection box; a recovery track fixedly arranged below the detection track and arranged opposite thereto; a detection component fixedly arranged above the detection track; a first conveying component, one end of which is connected to the outlet end of the detection track and the other end of which is connected to the inlet end of the recovery track; a flushing component fixedly arranged above the other end of the first conveying component; a second conveying component, one end of which is connected to the outlet end of the recovery track and the other end of which is connected to the inlet end of the detection track; a sample adding component arranged above the other end of the second conveying component; and a plurality of sample cups capable of circulating on the detection track, the first conveying component, the recovery track and the second conveying component. The present invention has the advantages of simple operation and can realize the automatic detection of microplastics in water, etc.

Description

Technical Field

[0001] The present invention relates to the field of microplastic detection. More specifically, the present invention relates to an automatic detection device for microplastics in water. Background Art

[0002] Microplastics are plastic particles with a diameter less than 5 millimeters and are also a major carrier of pollution. Compared with "white pollution" plastics, microplastics are likely to affect aquatic organisms and cause environmental disasters, and they can remain in water for thousands of years without disappearing.

[0003] For the existing detection of microplastics in water, generally, after collection by a collection device (such as CN114197414A), manual detection is carried out, and the operation process is complex and the efficiency is low. Summary of the Invention

[0004] An object of the present invention is to provide an automatic detection device for microplastics in water, which integrates collection, detection, and sample cup cleaning, is simple to operate, and can realize the automatic detection of microplastics in water.

[0005] To achieve the objects and other advantages of the present invention, there is provided an automatic detection device for microplastics in water, including: a detection box with an open top; a detection track fixedly arranged above the detection box; a recovery track fixedly arranged below the detection track and arranged opposite to it; a detection component fixedly arranged above the detection track; a first conveying component, one end of which is connected to the outlet end of the detection track and the other end of which is connected to the inlet end of the recovery track; a flushing component fixedly arranged above the other end of the first conveying component; a second conveying component, one end of which is connected to the outlet end of the recovery track and the other end of which is connected to the inlet end of the detection track; a sample adding component arranged above the other end of the second conveying component; and a plurality of sample cups capable of circulating on the detection track, the first conveying component, the recovery track, and the second conveying component.

[0006] Preferably, the automatic detection device for microplastics in water further includes a drying component fixedly arranged above the detection track and in front of the detection component, and the air outlet faces downward.

[0007] Preferably, for the automatic detection device for microplastics in water, the first conveying assembly includes a first conveying track, which includes a first straight segment, a first arc segment, and a second straight segment connected end to end, and the free end of the first straight segment communicates with the outlet end of the detection track, and the free end of the second straight segment communicates with the inlet end of the recovery track; a first cylinder, which is fixedly arranged on the side of the outlet end of the detection track opposite to the first straight segment, and a first push plate is fixedly arranged at the output end of the first cylinder, and the first push plate can extend into the first straight segment; a second cylinder, which is fixedly arranged at the inlet end of the recovery track and is perpendicular to the second straight segment, and a second push plate is fixedly arranged at the output end of the second cylinder, and the second push plate can extend into the recovery track; wherein, the flushing assembly is arranged above the second straight segment.

[0008] Preferably, for the automatic detection device for microplastics in water, the outlet end of the recovery track is open, and a first opening is provided on the top surface; the second conveying assembly includes a hoist, which is vertically fixedly arranged at the rear side of the recovery track, and a plurality of lifting blocks are arranged at intervals along the circumference of the conveyor belt of the hoist, and the free end of each lifting block can extend into the first opening and drive the sample cup to move upward, and a wedge-shaped block is fixedly arranged on the left side of each lifting block; a second conveying track, which includes a third straight segment, a second arc segment, and a fourth straight segment connected end to end, and the free end of the third straight segment is open and is located between the hoist and the recovery track, and a second opening for the wedge-shaped block to pass through is provided on the top surface of the third straight segment, and the free end of the fourth straight segment communicates with the inlet end of the detection track; a third cylinder, which is fixedly arranged at the inlet end of the detection track and is perpendicular to the fourth straight segment, and a third push plate is fixedly arranged at the output end of the third cylinder, and the third push plate can extend into the detection track; wherein, the sample adding assembly is arranged above the fourth straight segment and can move up and down.

[0009] Preferably, for the automatic detection device for microplastics in water, the detection track, the recovery track, the first conveying track, and the second conveying track have the same track cross-section, including a track body, a T-shaped chute arranged on the track body, and a track filter screen arranged on the side of the track body opposite to the opening of the T-shaped chute; the bottom of the sample cup is arranged in cooperation with the T-shaped chute, and a sample filter screen is arranged in the middle of the bottom of the sample cup, and the aperture of the sample filter screen is smaller than the aperture of the track filter screen.

[0010] Preferably, for the automatic detection device for microplastics in water, first magnets are arranged on both sides of the track filter screen, and four second magnets are arranged at equal intervals along the circumference of the bottom edge of the sample cup, and the second magnets are magnetically attracted to the first magnets.

[0011] Preferably, for the automatic microplastic detection device in water, the sampling assembly includes: a mounting post vertically fixed on the front side of the detection box, with a guiding chute provided on one side of the mounting post close to the fourth straight segment; a guiding block slidably disposed in the guiding chute and protruding from the guiding chute; a fourth cylinder fixed on the top of the mounting post, with the output end of the fourth cylinder extending into the guiding chute and fixedly connected to the guiding block; a sampling tube fixed on the guiding block, with the top of the sampling tube communicated with the sample liquid through a liquid inlet pipeline, and an outlet pipeline provided at the bottom of the sampling tube, and a flow sensor and a solenoid valve are sequentially arranged on the outlet pipeline.

[0012] Preferably, for the automatic microplastic detection device in water, a pressure pipe is fixedly provided at the bottom of the sampling tube. The pressure pipe is in the shape of an inverted frustum of a cone, and an annular pipe is provided inside the pressure pipe. A plurality of air outlet holes communicating with the outside are spacedly arranged at the bottom of the annular pipe, and an air inlet pipeline communicating with the outside is provided on the outer side wall of the annular pipe. A rubber sleeve is fixedly provided on the bottom side wall of the pressure pipe. Among them, the outlet pipeline passes through the inside of the annular pipe and penetrates the pressure pipe.

[0013] Preferably, for the automatic microplastic detection device in water, the inner bottom surface of the detection box is an inclined surface with a higher rear and a lower front, and a collecting groove is provided on the inner bottom surface opposite to the flushing assembly.

[0014] Preferably, for the automatic microplastic detection device in water, the flushing assembly includes: a flushing frame, which is a U-shaped plate with an open bottom, and the flushing frame is erected on the second straight segment, and the bottom of the flushing frame is lower than the bottom of the second straight segment; a plurality of flushing tubes spacedly fixed on the inner top surface of the flushing frame, and a plurality of nozzles are spacedly arranged on each flushing tube; a high-pressure water pump fixed in the detection box, with the water inlet end of the high-pressure water pump communicated with the collecting groove through a water inlet pipeline, and the water outlet end communicated with the plurality of flushing tubes through a water outlet pipeline.

[0015] The present invention has at least the following beneficial effects:

[0016] By setting the detection track, the recovery track, the first conveying assembly and the second conveying assembly as a closed loop capable of changing the direction of the cup mouth of the sample cup, and arranging the detection assembly above the detection track, the flushing assembly above the first conveying assembly, and the sampling assembly above the second conveying assembly, the automatic collection, detection of microplastics in the sample liquid and the cleaning process of the sample cup can be completed while the sample moves on the closed loop, with simple operation and high detection efficiency.

[0017] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the present invention. Brief Description of the Drawings

[0018] Figure 1 is a top view structural schematic diagram of the automatic microplastic detection device in an embodiment of the present invention;

[0019] Figure 2 is Figure 1 a cross-sectional structural schematic diagram taken along the line A-A in

[0020] Figure 3 is a structural schematic diagram of the sample adding component in an embodiment of the present invention;

[0021] Figure 4 is a cross-sectional structural schematic diagram of the recovery track in an embodiment of the present invention;

[0022] Figure 5 is a structural schematic diagram of the connection structure between the recovery track and the sample cup in an embodiment of the present invention;

[0023] Figure 6 is a bottom view structural schematic diagram of the sample cup in an embodiment of the present invention;

[0024] Figure 7 is a top view structural schematic diagram of the outlet end of the recovery track in an embodiment of the present invention. Detailed Embodiments

[0025] The present invention will be further described in detail below in conjunction with the embodiments and the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0026] It should be understood that the terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0027] It should be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified; in the description of the present invention, the orientation or positional relationship indicated by the terms "horizontal", "vertical", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] Such as Figure 1 , Figure 2 , Figure 5 , Figure 6As shown in the figure, the present invention provides an automatic detection device for microplastics in water, comprising: a detection box 1 with an open top; a detection track 2 fixedly arranged above the detection box 1; a recovery track 3 fixedly arranged below the detection track 2 and arranged opposite to it; a detection component 4 fixedly arranged above the detection track 2; a first conveying component, one end of which is connected to the outlet end of the detection track 2 and the other end of which is connected to the inlet end of the recovery track 3; a flushing component 5 fixedly arranged above the other end of the first conveying component; a second conveying component, one end of which is connected to the outlet end of the recovery track 3 and the other end of which is connected to the inlet end of the detection track 2; a sample adding component 6 arranged above the other end of the second conveying component; and a plurality of sample cups 7 capable of circulating on the detection track 2, the first conveying component, the recovery track 3 and the second conveying component.

[0029] On one side of the detection track, the recovery track, the first conveying component and the second conveying component in contact with the bottom of the sample cup are all filter screen structures, and the bottom of the sample cup is also a filter screen structure.

[0030] In the above embodiments, the microplastic automatic detection device includes a detection box, a detection track, a recovery track, a detection component, a first conveying component, a second conveying component, a flushing component, a sampling component, and a plurality of sample cups. The detection box is a hollow box structure with an open top. The detection track, the recovery track, the detection component, the first conveying component, the second conveying component, the flushing component, and the sampling component are all fixedly arranged inside the detection box, and the detection track, the recovery track, the first conveying component, and the second conveying component form a closed track structure. A plurality of sample cups can move in a cycle on the closed track structure to sequentially collect and detect microplastics in the sample liquid in the sample cups and automatically clean the sample cups. Specifically, the detection track is arranged horizontally or inclined (higher at the front and lower at the back) above the detection box, and the interface of the detection track with the sample cup faces upward; the recovery track is arranged horizontally or inclined (higher at the front and lower at the back) below the detection track, and the interface of the recovery track with the sample cup faces downward, that is, the detection track and the recovery track are arranged in opposite directions; the detection component is arranged above the detection track and is used to detect microplastics in the sample cup. The detection component can be an existing microplastic detection device such as a microscopic photography device; one end of the first conveying component is connected to the outlet end of the detection track, and the interface with the sample cup faces upward, and the other end is connected to the inlet end of the recovery track, and the interface with the sample cup faces downward. The first conveying component is used to convey the sample cup on the detection track to the recovery track and change the cup mouth direction of the sample cup from upward to downward to facilitate the flushing component to flush the sample cup; one end of the second conveying component is connected to the outlet end of the recovery track, and the interface with the sample cup faces downward, and the other end is connected to the inlet end of the detection track, and the interface with the sample cup faces upward. The second conveying component is used to convey the sample cup on the recovery track to the detection track and change the cup mouth direction of the sample cup from downward to upward to facilitate the sampling component to add sample liquid into the sample cup.

[0031] During use, the cup mouth of the sample cup faces upward, and the sampling component is used to add sample liquid into the sample cup. After the sample liquid is filtered by the filter screen, the microplastics are retained above the filter screen of the sample cup. The sample cup enters the detection track, and the detection component is used to detect the microplastics in the sample cup. Then the sample cup enters the first conveying component, and a 180° flip of the sample cup is completed on the first conveying component, and the sample cup is cleaned by the flushing component. Then, the sample cup sequentially enters the recovery track and the second conveying component, a 180° flip of the sample cup is completed on the second conveying component, and it moves below the sampling component, and the sample cup is reset, that is, a process of automatic microplastic collection, detection, and sample cup cleaning is completed.

[0032] In the present invention, the detection track, the recovery track, the first conveying component, and the second conveying component are set as a closed loop capable of changing the direction of the cup mouth of the sample cup. A detection component is arranged above the detection track, a flushing component is arranged above the first conveying component, and a sample adding component is arranged above the second conveying component. While the sample moves on the closed loop, the automatic collection, detection of microplastics in the sample liquid, and the cleaning process of the sample cup can be completed. The operation is simple and the detection efficiency is high.

[0033] In another embodiment, as Figure 1 shown, the automatic water microplastic detection device further includes a drying component 8, which is fixedly arranged above the detection track 2 and on the front side of the detection component 4, and the air outlet faces downward.

[0034] In the above embodiment, the drying component includes a blower and a wind guiding cover. The wind guiding cover is arranged above the detection track, the blower is arranged on the top of the wind guiding cover, and the air outlet of the blower extends into the wind guiding cover. By arranging the drying component above the detection track and on the front side of the detection component, on the one hand, the microplastics in the sample cup on the detection track can be dried to improve the detection accuracy of the detection component; on the other hand, the sample cup on the recovery track can be dried to reduce the error of the next detection.

[0035] In another embodiment, as Figure 1 、 Figure 2 shown, for the automatic water microplastic detection device, the first conveying component includes a first conveying track, which includes a first straight section 9, a first arc section 10, and a second straight section 11 connected end to end. The free end of the first straight section 9 is communicated with the outlet end of the detection track 2, and the free end of the second straight section 11 is communicated with the inlet end of the recovery track 3; a first cylinder 12 is fixedly arranged on the side of the outlet end of the detection track 2 opposite to the first straight section 9, and a first push plate 13 is fixedly arranged at the output end of the first cylinder 12, and the first push plate 13 can extend into the first straight section 9; a second cylinder 14 is fixedly arranged at the inlet end of the recovery track 3 and is perpendicular to the second straight section 11, and a second push plate is fixedly arranged at the output end of the second cylinder 14, and the second push plate can extend into the recovery track 3; wherein, the flushing component 5 is arranged above the second straight section 11.

[0036] In the above embodiments, the first conveying assembly includes a first conveying track, a first cylinder, and a second cylinder. The interface of the first straight section of the first conveying track with the sample cup faces upward, and the interface of the second straight section with the sample cup faces downward. The first arc section is used to connect the first straight section and the second straight section, and can turn the sample cup from the upward-facing cup mouth on the first straight section to the downward-facing cup mouth. When in use, the sample cup at the outlet end of the detection track is pushed into the first straight section by the first cylinder, flipped 180° through the first arc section, automatically enters the second straight section under the action of gravity, and enters the inlet end of the recovery track under the impact force of the subsequent sample cups, and is then pushed to the outlet end of the recovery track by the second cylinder, thus realizing the automatic transmission of the sample cup between the outlet end of the detection track and the outlet end of the recovery track.

[0037] In another embodiment, as Figure 1 , Figure 2 shown, for the automatic water microplastic detection device, the outlet end of the recovery track 3 is open, and the top surface is provided with a first opening 16; the second conveying assembly includes a hoist 17, which is vertically fixed at the rear side of the recovery track 3. A plurality of lifting blocks 18 are arranged at intervals along the circumference of the conveyor belt of the hoist 17. The free end of each lifting block 18 can extend into the first opening 16 and drive the sample cup 7 to move upward, and a wedge-shaped block 19 is fixed on the left side of each lifting block 18; a second conveying track, which includes a third straight section 20, a second arc section 21, and a fourth straight section 22 connected end to end. The free end of the third straight section 20 is open and is located between the hoist 17 and the recovery track 3. The top surface of the third straight section 20 is provided with a second opening 23 for the wedge-shaped block 19 to pass through. The free end of the fourth straight section 22 is communicated with the inlet end of the detection track 2; a third cylinder 24, which is fixed at the inlet end of the detection track 2 and is perpendicular to the fourth straight section 22. The output end of the third cylinder 24 is fixed with a third push plate 25, and the third push plate 25 can extend into the detection track 2; wherein, the sample adding assembly 6 is arranged above the fourth straight section 22 and can move up and down.

[0038] In the above embodiments, the second conveying assembly includes a second conveying track, a hoist, and a third cylinder. The interface of the third straight section on the second conveying track with the sample cup faces downward, and the interface of the fourth straight section with the sample cup faces upward. The second arc section is used to connect the third straight section and the fourth straight section, and can turn the sample cup from the downward-facing cup mouth on the third straight section to the upward-facing cup mouth. During use, the sample cup at the outlet end of the recovery track is driven upward by the lifting block of the hoist until it is connected to the third straight section. The lifting block continues to move upward, and the wedge-shaped block connected to the lifting block pushes the sample cup towards the second arc section. After being flipped 180° through the second arc section, it automatically enters the fourth straight section under the action of gravity, and enters the inlet end of the detection track under the impact force of the subsequent sample cups, and is then pushed by the third cylinder to the outlet end of the detection track, thus realizing the automatic transmission of the sample cup between the outlet end of the recovery track and the outlet end of the detection track.

[0039] In another embodiment, as Figure 4 , Figure 5 , Figure 6 shown, for the automatic water microplastic detection device, the track cross-sections of the detection track 2, the recovery track 3, the first conveying track, and the second conveying track are the same, including a track body 26, a T-shaped chute 27 provided on the track body 26, and a track filter screen 28 provided on one side of the track body 26 opposite to the opening of the T-shaped chute 27. The bottom of the sample cup 7 is cooperatively arranged with the T-shaped chute 27. A sample filter screen 31 is provided in the middle of the bottom of the sample cup 7, and the aperture of the sample filter screen 31 is smaller than the aperture of the track filter screen 28.

[0040] In the above embodiments, by clamping the bottom of the sample cup in the T-shaped chute, it is possible to prevent the sample cup from derailing when running on the closed track. The track filter screen and the sample filter screen are arranged opposite to each other, and the aperture of the sample filter screen is restricted to be smaller than the aperture of the track filter screen, so as to filter the sample liquid after sample addition and collect the microplastics in the sample liquid. At the same time, it is convenient for the air-drying assembly to dry the sample cup and / or the microplastics.

[0041] In another embodiment, as Figure 4 , Figure 5 , Figure 6 shown, first magnets 29 are provided on both sides of the track filter screen. Four second magnets 30 are equidistantly arranged along the circumference at the bottom edge of the sample cup 7, and the second magnets 30 are magnetically attracted to the first magnets 31.

[0042] In the above embodiments, the first magnet is arranged along the length direction of the track. By arranging the first magnets on both sides of the track filter screen and arranging four second magnets at the bottom of the sample cup, and the second magnets are magnetically attracted to the first magnets. On the one hand, the sample cup can be guided and limited by the first magnets, so that the sample cup can run stably on the closed track. On the other hand, when the elevator drives the sample cup to move upward, the sample cup can be automatically connected into the third straight section through the attraction between the first magnet and the second magnet.

[0043] In another embodiment, as Figure 3 shown, for the automatic water microplastic detection device, the sample adding assembly 6 includes an installation column 32 which is vertically fixed on the front side of the detection box 1. A guiding chute 33 is arranged on one side of the installation column 32 close to the fourth straight section 22; a guiding block 34 which is slidably arranged in the guiding chute 33 and protrudes out of the guiding chute 33; a fourth cylinder 35 which is fixed on the top of the installation column 32, and the output end of the fourth cylinder 35 extends into the guiding chute 33 and is fixedly connected with the guiding block 34; a sample adding tube 36 which is fixed on the guiding block 34. The top of the sample adding tube 36 is communicated with the sample liquid through a liquid inlet pipeline 37. The bottom of the sample adding tube 33 is provided with a liquid outlet pipeline, and a flow sensor 38 and a solenoid valve 39 are arranged on the liquid outlet pipeline in sequence.

[0044] In the above embodiments, the sample adding tube moves up and down along the guiding chute under the drive of the fourth cylinder. During use, the sample liquid is added into the sample adding tube through the liquid inlet pipeline. When the sample cup moves to the lower part of the sample adding tube, the fourth cylinder drives the sample adding tube to move downward, and the sample adding tube extends into the sample cup. The sample liquid is added into the sample cup through the liquid outlet pipeline, and quantitative liquid addition is realized through the flow sensor and the solenoid valve. After the sample adding is completed, the fourth cylinder drives the sample adding tube to move upward, and the sample cup continues to move towards the detection track under the collision of the subsequent sample cups, that is, automatic sample adding is realized.

[0045] Furthermore, a foamer 40 is fixedly arranged at the outlet end of the liquid outlet pipeline. Here, by arranging the foamer, the sample liquid entering the sample adding tube has a foaming effect, so that the microplastics in the sample liquid gather on the liquid surface, which is convenient for filtering the sample liquid.

[0046] In another embodiment, as Figure 3As shown, in the automatic detection device for microplastics in water, a pressure pipe 41 is fixedly provided at the bottom of the sample addition pipe 36. The pressure pipe 41 is in the shape of an inverted frustum of a cone. An annular pipe 42 is provided inside the pressure pipe 41. A plurality of air outlet holes communicating with the outside are spaced at the bottom of the annular pipe 42. An air inlet pipe 43 communicating with the outside is provided on the outer side wall of the annular pipe 42. A rubber sleeve is fixedly provided on the bottom side wall of the pressure pipe 41. Among them, the liquid outlet pipe passes through the inside of the annular pipe 42 and penetrates out of the pressure pipe 41.

[0047] In the above embodiment, the air inlet pipe is communicated with an air compressor provided outside. By providing an inverted frustum-shaped pressure pipe at the bottom of the sample addition pipe and a rubber sleeve on the bottom side wall of the pressure pipe, during sample addition, the fourth cylinder drives the sample addition pipe to move downward. The pressure pipe extends into the back of the sample cup and is hermetically connected to the sample cup. After sample addition, compressed air is injected into the sample cup through the air inlet pipe by the air compressor to pressurize the inside of the sample cup, so as to rapidly separate the sample liquid from the microplastics in the sample liquid. After the separation is completed, the fourth cylinder drives the sample addition pipe to move upward, that is, the rapid separation of microplastics in the sample liquid is realized.

[0048] In another embodiment, as Figure 1 , Figure 2 shown, in the automatic detection device for microplastics in water, the inner bottom surface of the detection box 1 is an inclined surface with the rear higher than the front, and a collecting groove 44 is provided on the inner bottom surface opposite to the flushing assembly 5. Here, by setting the inner bottom surface of the detection box to be higher at the rear and lower at the front and providing a collecting groove below the flushing assembly, the liquid falling into the detection box during sample addition and flushing is all introduced into the collecting groove, which is convenient for collecting and discharging the waste liquid.

[0049] In another embodiment, as Figure 1 shown, the flushing assembly 5 of the automatic detection device for microplastics in water includes a flushing frame 45, which is a U-shaped plate with an opening downward. The flushing frame 45 is erected on the second straight section 11, and the bottom of the flushing frame 45 is lower than the bottom of the second straight section 11, such as 20 - 30 cm lower; a plurality of flushing pipes are fixedly provided at intervals on the inner top surface of the flushing frame 45, and a plurality of nozzles are provided at intervals on each flushing pipe; a high-pressure water pump 46 is fixedly provided in the detection box 1. The water inlet end of the high-pressure water pump 46 is communicated with the collecting groove 44 through a water inlet pipe, and the water outlet end is communicated with the plurality of flushing pipes through a water outlet pipe 47.

[0050] In the above embodiments, by mounting the flushing rack on the second straight section and limiting the bottom of the flushing rack to be lower than the bottom of the second straight section, the high-pressure liquid ejected from the nozzle is restricted within the flushing rack, preventing the high-pressure liquid from spreading and affecting the effects of the air-drying component and the detection component. By connecting the water inlet end of the high-pressure water pump to the collecting tank, the recycling of waste liquid is realized, which is more environmentally friendly.

[0051] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. An automatic detection device for microplastics in water, characterized in that, Including: A detection box with an open top; A detection track fixedly arranged above the detection box; A recovery track fixedly arranged below the detection track and arranged opposite to the detection track; A detection component fixedly arranged above the detection track; A first conveying component, one end of which is connected to the outlet end of the detection track and the other end is connected to the inlet end of the recovery track; A flushing component fixedly arranged above one end of the first conveying component connected to the inlet end of the recovery track; A second conveying component, one end of which is connected to the outlet end of the recovery track and the other end is connected to the inlet end of the detection track; A sample adding component arranged above one end of the second conveying component connected to the inlet end of the detection track; A plurality of sample cups capable of circulating on the detection track, the first conveying component, the recovery track and the second conveying component; The first conveying component includes a first conveying track which includes a first straight segment, a first arc segment and a second straight segment connected end to end, and the free end of the first straight segment is communicated with the outlet end of the detection track, and the free end of the second straight segment is communicated with the inlet end of the recovery track; a first air cylinder fixedly arranged on one side of the outlet end of the detection track opposite to the first straight segment, and a first push plate is fixedly arranged at the output end of the first air cylinder, and the first push plate can extend into the first straight segment; a second air cylinder fixedly arranged at the inlet end of the recovery track and perpendicular to the second straight segment, and a second push plate is fixedly arranged at the output end of the second air cylinder, and the second push plate can extend into the recovery track; wherein, the flushing component is arranged above the second straight segment.

2. The automatic detection device for microplastics in water according to claim 1, wherein, It further includes a drying component fixedly arranged above the detection track and in front of the detection component, and the air outlet faces downwards.

3. The automatic detection device for microplastics in water according to claim 1, characterized in that, The outlet end of the recovery track is open, and a first opening is arranged on the top surface; the second conveying component includes a lifter vertically fixedly arranged at the rear side of the recovery track, and a plurality of lifting blocks are arranged at intervals along the circumference of the conveyor belt of the lifter, and the free end of each lifting block can extend into the first opening and drive the sample cup to move upwards, and a wedge-shaped block is fixedly arranged on the left side of each lifting block; a second conveying track which includes a third straight segment, a second arc segment and a fourth straight segment connected end to end, and the free end of the third straight segment is open and is located between the lifter and the recovery track, and a second opening for the wedge-shaped block to pass through is arranged on the top surface of the third straight segment, and the free end of the fourth straight segment is communicated with the inlet end of the detection track; a third air cylinder fixedly arranged at the inlet end of the detection track and perpendicular to the fourth straight segment, and a third push plate is fixedly arranged at the output end of the third air cylinder, and the third push plate can extend into the detection track; wherein, the sample adding component is arranged above the fourth straight segment and can move up and down.

4. The automatic detection device for microplastics in water according to claim 3, characterized in that, The cross-sections of the detection track, the recovery track, the first conveying track, and the second conveying track are the same, including a track body, a T-shaped chute provided on the track body, and a track filter screen provided on one side of the track body opposite to the opening of the T-shaped chute; the bottom of the sample cup is cooperatively arranged with the T-shaped chute, a sample filter screen is provided in the middle of the bottom of the sample cup, and the pore size of the sample filter screen is smaller than the pore size of the track filter screen.

5. The automatic detection device for microplastics in water according to claim 4, characterized in that First magnets are provided on both sides of the track filter screen, and four second magnets are equidistantly arranged along the circumferential direction of the bottom edge of the sample cup, and the second magnets are magnetically attracted to the first magnets.

6. The automatic detection device for microplastics in water according to claim 3, characterized in that The sample adding assembly includes a mounting column vertically fixed on the front side of the detection box, and a guiding chute is provided on one side of the mounting column close to the fourth straight section; a guiding block slidably arranged in the guiding chute and protruding from the guiding chute; a fourth air cylinder fixed on the top of the mounting column, and the output end of the fourth air cylinder extends into the guiding chute and is fixedly connected with the guiding block; a sample adding tube fixed on the guiding block, the top of the sample adding tube is communicated with the sample liquid through a liquid inlet pipeline, a liquid outlet pipeline is provided at the bottom of the sample adding tube, and a flow sensor and a solenoid valve are sequentially arranged on the liquid outlet pipeline.

7. The automatic detection device for microplastics in water according to claim 6, wherein, A pressure adding tube is fixed at the bottom of the sample adding tube, the pressure adding tube is in an inverted frustum shape, an annular tube is arranged inside the pressure adding tube, a plurality of air outlet holes communicating with the outside are arranged at intervals at the bottom of the annular tube, an air inlet pipeline communicating with the outside is arranged on the outer side wall of the annular tube, and a rubber sleeve is fixedly arranged on the bottom side wall of the pressure adding tube. Among them, the liquid outlet pipeline passes through the inside of the annular tube and penetrates out of the pressure adding tube.

8. The automatic detection device for microplastics in water according to claim 1, characterized in that, The inner bottom surface of the detection box is an inclined surface with the rear part higher than the front part, and a collecting groove is provided on the inner bottom surface opposite to the flushing assembly.

9. The automatic microplastic detection device in water according to claim 8, characterized in that, The flushing assembly includes a flushing frame which is a U-shaped plate with an opening downward, the flushing frame is erected on the second straight section, and the bottom of the flushing frame is lower than the bottom of the second straight section; a plurality of flushing tubes are fixedly arranged at intervals on the inner top surface of the flushing frame, and a plurality of nozzles are arranged at intervals on each flushing tube; a high-pressure water pump is fixed in the detection box, the water inlet end of the high-pressure water pump is communicated with the collecting groove through a water inlet pipeline, and the water outlet end is communicated with the plurality of flushing tubes through a water outlet pipeline.

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