A harmful substance filtering circulation and collection method for river crab laboratory

Abstract

The application discloses a harmful substance filtering circulation and collecting method for river crab laboratory, relates to the field of river crab experiments, and comprises the following steps: step one, placing work, wherein workers place river crabs to be experimented on a bearing plate, then send water into an experimental bin, and then close a cover plate; step two, water releasing work, in the process of river crab breeding experiments, many impurities or harmful substances are generated, which are deposited at the bottom of the experimental bin, and the water in the experimental bin is released by the device when a certain period of time is reached according to the program set by the workers; step three, collecting work, the water in the experimental bin flows into a water tank through a fixed frame, is filtered by a second filter plate first, then is filtered by two first filter plates, and impurities are filtered on the surface, and then the workers collect the impurities for research; and step four, recycling. The components are set to facilitate the collection and detection of harmful substances.

Description

Technical Field

[0001] The present invention generally relates to the technical field of Chinese mitten-handed crab experiments, and specifically relates to a method for filtering, circulating and collecting harmful substances in a Chinese mitten-handed crab laboratory. Background Art

[0002] Chinese mitten-handed crab is also called "crab" and "hairy crab". The carapace formed by the combination of the head and thorax is square-circular with a hard texture. A pair of eyes grow on the front end of the body, and two pairs of very sharp crab teeth are provided on the sides. The pair of appendages at the foremost end of the crab is called cheliped, covered with fluff on the surface; there are 4 pairs of walking legs behind the chelipeds, which are laterally flattened and long; the abdominal appendages have degenerated. The male and female of Chinese mitten-handed crabs can be distinguished from their abdomens: the abdomen of female crabs is round, and the abdomen of male crabs is triangular.

[0003] According to a Chinese mitten-handed crab breeding aquarium for indoor experiments provided in the patent document with application number CN202220664899.7, the device comprises a tank body, a water inlet device, a water drainage device, an aeration device, a first shelter and a second shelter, the tank body is of an open structure, the water inlet device comprises a water inlet valve and a water inlet pipe, the water drainage device is a water drainage valve, the water drainage valve is arranged at the lower part of the left side of the tank body, the aeration device comprises an annular aeration pipe, an air inlet pipe and an air pump, the annular aeration pipe is arranged on the left side of the bottom surface of the tank body, one end of the air inlet pipe is connected with the annular aeration pipe, the other end of the air inlet pipe is connected with the air pump, the air pump is located outside the tank body, the first shelter is located on the right side of the bottom surface of the tank body, the first shelter is of a cylindrical structure with openings at both ends, the second shelter is located inside the annular aeration pipe, the second shelter is of a cuboid structure, the cuboid is composed of four second cuboids with the same structure, one surface of each second cuboid is an opening structure, the four opening structures are arranged in a "卍" shape, and an overflow pipe is provided at the upper part of the right side of the tank body.

[0004] Since the product in the above patent is provided with the water inlet device, the water drainage device, the overflow pipe and the aeration device, the problem of hypoxia of Chinese mitten-handed crabs is effectively solved, the stress effect of manual water change on Chinese mitten-handed crabs is reduced, thereby ensuring the smooth progress of the experiment; the first shelter and the second shelter can meet the requirements of Chinese mitten-handed crabs of different sizes, and reduce problems such as large error of experimental data caused by fighting and cannibalism, thereby ensuring the accuracy of experimental data. When breeding Chinese mitten-handed crabs in the laboratory, a large amount of impurities and harmful substances will be produced in the water, and laboratory staff need to collect the harmful substances for experiments, which facilitates subsequent effective treatment of the water quality for breeding Chinese mitten-handed crabs, but the harmful substances therein are inconvenient to collect. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a method for filtering, circulating and collecting harmful substances in a Chinese mitten-handed crab laboratory, so as to solve the technical problem raised in the above background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for filtering, circulating, and collecting harmful substances in a crab laboratory, comprising the following steps: Step 1: Placement. The staff first places the crabs to be tested on the support plate, then pours water into the experimental chamber, and then closes the cover. Step 2: Water Release. During the crab farming experiment, many impurities or harmful substances will be generated. These substances will settle at the bottom of the experimental chamber. According to the program set by the staff, the equipment will release the water inside the experimental chamber after a certain period of time. Step 3: Collection work. Water in the experimental chamber flows into the water tank from the fixed frame. It is first filtered by the second filter plate, and then filtered by two first filter plates to filter impurities on the surface. The staff then collect the impurities for research. Step 4: Recycling. The filtered water in the water tank is pumped into the experimental chamber to achieve water recycling.

[0007] Preferably, a method for filtering, circulating, and collecting harmful substances in a crab laboratory includes an experimental chamber. A lifting component is embedded in the bottom of the experimental chamber. The lifting component has a cover plate at its actuating end. Two vertical plates are symmetrically arranged around the center axis at the bottom of the cover plate. Rotating components are provided on the side walls of the two vertical plates. The actuating end of the rotating components is connected to a through-hole in the cover plate via a first flexible hose. A water inlet channel is provided at the top of the cover plate, and the output end of the water inlet channel is connected to a through-hole at the top of the cover plate. A support plate is provided at the bottom of the two vertical plates. A water outlet is embedded in the side wall of the experimental chamber. An electric door is electrically connected to the side wall of the water outlet. A filtration device is located below the experimental chamber, and a collection device is located on the side wall of the experimental chamber. The filtration device includes a water tank located below the experimental chamber. The top of the water tank is provided with a top cover. The top of the top cover is embedded with two embedding slots. The side walls of the two embedding slots are provided with embedding plates. The side wall near the bottom of the embedding plate is provided with a discharge port. The side wall of the discharge port is provided with a sealing plug. The interior of the embedding plate is provided with a filtration component. The inner side wall of the embedding plate is provided with a scraping component. The side wall of the water tank is provided with a water pumping component. The top of the water tank is fixed to the side wall of the experimental chamber with a screening component. The collection device includes a movable component disposed on the side wall of the experimental chamber. The actuating end of the movable component engages with a meshing plate. The meshing plate is slidably connected to the side wall of the experimental chamber. One end of the meshing plate is provided with a collection component. In this preferred embodiment, the provided component facilitates the collection and detection of hazardous substances.

[0008] Preferably, the rotating component is embedded in the side wall of one of the vertical plates of the first motor, and the actuating end of the first motor is provided with a spray channel. The input end of the spray channel is connected to one end of the first hose. In this preferred embodiment, the first motor can adjust the direction of the spray channel, so that the stains on the first filter plate can be rinsed.

[0009] Preferably, the water pumping component includes a second flexible hose disposed on the side wall of the water tank, one end of the second flexible hose is provided with a water pump, and the output end of the water pump is provided with a third flexible hose, one end of the third flexible hose being connected to the input end of the water inlet channel. In this preferred embodiment, the water pumping component can send water from the water tank into the spray channel.

[0010] Preferably, the screening component includes a fixed frame disposed above the water tank and fixed to the side wall of the experimental chamber. Two sliders are symmetrically embedded on the top of the fixed frame with the center of the fixed frame as the axis. The side walls of the two sliders are fixedly connected to a second filter plate. In this preferred embodiment, the screening component can perform a first filtration of the water inside the experimental chamber to filter out the excrement of the crabs or other impurities.

[0011] Preferably, the moving component includes a second motor disposed on the side wall of the experimental chamber. The actuating end of the second motor is provided with a gear. The gear is connected to another gear through a column rod. The gear meshes with a meshing plate. In this preferred embodiment, the moving component can drive the collection frame to move within the experimental chamber.

[0012] Preferably, the collecting component includes a collecting frame disposed at one end of the meshing plate, a scraper plate and a sealing plate at the top of the collecting frame, a solenoid valve on the side wall of the collecting frame, and the collecting frame sliding at the bottom of the experimental chamber via a slide rail on the inner side wall of the experimental chamber. A limiting plate is fixed to one side of the collecting frame on the inner side wall of the experimental chamber, and an auxiliary scraper is fixed to the inner side wall of the experimental chamber below the limiting plate. In this preferred embodiment, the collecting frame can collect impurities inside the experimental chamber, and then the solenoid valve is opened to flush the collected impurities out of the experimental chamber with water from inside the experimental chamber.

[0013] Preferably, the scraping component includes a scraper slidably connected to the side wall of the slide of the embedded plate. The side wall of the scraper is provided with a groove. In this preferred embodiment, the scraping component can scrape off impurities inside the embedded plate and then collect the harmful substances therein, which can then be studied by the staff.

[0014] Preferably, the lifting component is embedded in the electric lifting rod at the top of the experimental chamber, and the actuator of the electric lifting rod is fixed to the bottom of the cover plate. In this preferred embodiment, the lifting component can drive the cover plate to move.

[0015] Preferably, the filter component includes a first filter plate disposed on the inner sidewall of the embedded plate. In this preferred embodiment, the filter component can collect harmful substances, allowing the harmful substances to adhere to the filter plate or the inner bottom wall of the embedded plate.

[0016] In summary, the present invention has the following main beneficial effects: The system is designed to facilitate the collection and detection of harmful substances. The first motor can adjust the direction of the spray channel to wash away dirt on the first filter plate. The water pumping component can send water from the tank into the spray channel. The sieving component can perform the first filtration of the water inside the experimental chamber, filtering out crab excrement or other impurities. The moving component can move the collection frame inside the experimental chamber to collect impurities. Then, the solenoid valve is opened to flush the collected impurities out of the experimental chamber with water from inside the chamber. The scraping component can scrape the impurities inside the embedded plate and collect the harmful substances for researchers to study. The lifting component can move the cover plate. The filtration component can collect harmful substances and allow them to adhere to the filter plate or the bottom wall of the embedded plate. Attached Figure Description

[0017] Figure 1 This is an axial view of the present invention; Figure 2 This is an axial view of the first flexible tube of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is an exploded view of the present invention; Figure 5 This is a cross-sectional view of the cover plate of the present invention; Figure 6 This is an axis view of the collection frame of the present invention; Figure 7 This is an axial view of the moving component of the present invention; Figure 8 This is an axial view of the filter component of the present invention; Figure 9 This is an enlarged structural diagram of point A in the present invention; Figure 10 This is an enlarged structural diagram of point B in the present invention; Figure 11 This is an enlarged structural diagram of point C in the present invention; Figure 12 This is a flowchart of the process of the present invention.

[0018] Figure Descriptions: 10. Experimental Chamber; 11. Lifting Component; 111. Electric Lifting Rod; 12. Cover Plate; 13. Vertical Plate; 14. Rotating Component; 141. First Motor; 142. Spray Channel; 15. First Flexible Hose; 16. Water Inlet Channel; 17. Support Plate; 18. Water Outlet; 19. Electric Door; 20. Filter Device; 21. Water Tank; 22. Top Cover; 23. Embedded Groove; 24. Embedded Plate; 241. Discharge Port; 242. Sealing Plug; 25. Filter Component; 251. First Filter Plate; 26. Scraper Section Components; 261, scraper; 262, groove; 27, pumping component; 271, second hose; 272, water pump; 273, third hose; 28, screening component; 281, fixed frame; 282, slider; 283, second filter plate; 30, collecting device; 31, moving component; 311, second motor; 312, gear; 32, meshing plate; 33, collecting component; 331, collecting frame; 332, scraper; 333, sealing plate; 334, solenoid valve; 335, limiting plate; 336, auxiliary scraper. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The embodiments of the present invention will now be described.

[0021] Example Please refer to the appendix carefully. Figure 2 , 3As shown in Figures 4 and 6, in a preferred embodiment of the present invention, step one, placement, involves placing the crabs to be tested on a support plate, then filling the experimental chamber with water, and finally closing the cover; step two, draining water, involves releasing water from the experimental chamber after a certain period of time during the crab farming experiment, where many impurities or harmful substances are generated and settle at the bottom of the experimental chamber; step three, collection, involves the water in the experimental chamber flowing from the fixed frame into a water tank, being filtered by a second filter plate, and then by two first filter plates, which filter impurities onto the surface, which are then collected for research; step four, recycling, involves pumping the filtered water from the water tank back into the experimental chamber to achieve water recycling. A method for filtering, recycling, and collecting harmful substances in a crab laboratory includes an experimental chamber 10, with a lifting component 11 embedded at the bottom of the experimental chamber 10. The actuator is provided with a cover plate 12. Two vertical plates 13 are symmetrically arranged around the center axis at the bottom of the cover plate 12. Rotating components 14 are provided on the side walls of the two vertical plates 13. The actuator end of the rotating component 14 is connected to the through hole of the cover plate 12 via a first flexible hose 15. A water inlet channel 16 is provided at the top of the cover plate 12, and the output end of the water inlet channel 16 is connected to the through hole at the top of the cover plate 12. A support plate 17 is provided at the bottom of the two vertical plates 13. A water outlet 18 is embedded in the side wall of the experimental chamber 10. The side wall of the water outlet 18 is electrically connected... Connected to the electric door 19, a filter device 20 is provided below the experimental chamber 10, a collection device 30 is provided on the side wall of the experimental chamber 10, a lifting component 11 is embedded in the electric lifting rod 111 at the top of the experimental chamber 10, the execution end of the electric lifting rod 111 is fixed to the bottom of the cover plate 12, a rotating component 14 is embedded in the first motor 141 on the side wall of one of the vertical plates 13, the execution end of the first motor 141 is provided with a spray channel 142, and the input end of the spray channel 142 is connected to one end of the first hose 15.

[0022] It should be noted that in this embodiment, the staff first places the crabs to be tested on the support plate 17, and then puts water into the experimental chamber 10. When the water reaches the designated position, the electric lifting rod 111 is activated to close the cover plate 12. The cover plate 12 drives the vertical plate 13 and the support plate 17 to descend. When the equipment reaches a certain time, the excrement of the crabs and various impurities and harmful substances will grow in the water. At this time, the impurities will settle at the bottom of the experimental chamber 10 and on the surface of the support plate 17. Then, the electric door 19 is raised by the rotation of the electric motor to release the sewage out of the experimental chamber 10.

[0023] Please refer to the appendix carefully. Figure 2 , 4As shown in Figures 5, 6, 9, 10, 11, and 12, in a preferred embodiment of the present invention, the filtration device 20 includes a water tank 21 located below the experimental chamber 10. The top of the water tank 21 is provided with a top cover 22, and the top of the top cover 22 is fitted with two embedding grooves 23. The side walls of the two embedding grooves 23 are provided with embedding plates 24, and the side wall near the bottom of the embedding plate 24 is fitted with a discharge port 241. The side wall of the discharge port 241 is provided with a sealing plug 242. A filtration component 25 is provided inside the embedding plate 24, and a scraping component 26 is provided on the inner side wall of the embedding plate 24. A water pumping component 27 is provided on the side wall of the water tank 21. A screening component 28 is located on the top of the water tank 21 and fixed to the side wall of the experimental chamber 10. The filtration component 25 includes components located in the embedding plate 24. The inner sidewall has a first filter plate 251, a scraping component 26 including a scraper 261 slidably connected to the sidewall of the slide of the embedded plate 24, the sidewall of the scraper 261 is provided with a groove 262, the water pumping component 27 includes a second hose 271 provided on the sidewall of the water tank 21, one end of the second hose 271 is provided with a water pump 272, the output end of the water pump 272 is provided with a third hose 273, one end of the third hose 273 is connected to the input end of the water inlet channel 16, and the screening component 28 includes a fixing frame 281 provided above the water tank 21 and fixed to the sidewall of the experimental chamber 10, the top of the fixing frame 281 is symmetrically embedded with two sliders 282 about the center of the fixing frame 281, and the sidewalls of the two sliders 282 are fixedly connected to the second filter plate 283.

[0024] It should be noted that, in this embodiment, when the sewage flows out of the outlet 18, it is first filtered by the second filter plate 283 inside the fixed frame 281 to remove large impurities. Then it flows into the water tank 21. At this time, it passes through the second filter plate 283, which filters out harmful substances in the water and then attaches them to the inside of the second filter plate 283 and the embedded plate 24. At this time, the water pump 272 is started, and the water pump 272 draws the filtered water from the water tank 21 into the second hose 271, and then sends it into the water inlet channel through the third hose 273. In step 16, water is then fed into the first hose 15 from the output end of the inlet channel 16, and then sprayed onto the support plate 17 from the spray channel 142. At this time, the first motor 141 is started to rotate the spray channel 142, so that the spray channel 142 washes the surface of the support plate 17. Then, the impurities on the surface of the support plate 17 are washed clean. The impurities at the bottom of the collection frame 331 fall to the bottom of the experimental chamber 10 through the filter hole at the top. After rinsing is completed, the water pump 272 is stopped. At this time, the impurities on the support plate 17 are basically washed clean. Then, the electric door 19 is closed.

[0025] Please refer to the appendix carefully. Figure 2 , 4As shown in Figures 7 and 8, in a preferred embodiment of the present invention, the collecting device 30 includes a moving component 31 disposed on the side wall of the experimental chamber 10. The actuating end of the moving component 31 engages with a meshing plate 32, and the meshing plate 32 is slidably connected to the side wall of the experimental chamber 10. One end of the meshing plate 32 is provided with a collecting component 33. The moving component 31 includes a second motor 311 disposed on the side wall of the experimental chamber 10. The actuating end of the second motor 311 is provided with a gear 312, and the gear 312 is connected to another gear 312 through a column rod. The gears 312 mesh. The meshing plate 32 and the collecting component 33 include a collecting frame 331 located at one end of the meshing plate 32, a scraper 332 located at the top of the collecting frame 331, a sealing plate 333 located at the top of the collecting frame 331, a solenoid valve 334 located on the side wall of the collecting frame 331, and the collecting frame 331 sliding at the bottom of the experimental chamber 10 via a slide rail on the inner side wall of the experimental chamber 10. A limiting plate 335 is located on one side of the collecting frame 331 and fixed to the inner side wall of the experimental chamber 10, and an auxiliary scraper 336 is located below the limiting plate 335 and fixed to the inner side wall of the experimental chamber 10.

[0026] It should be noted that in this embodiment, the second motor 311 is started at this time, which drives the gear 312 to rotate. The gear 312 drives another gear 312 to rotate inside the bearing seat through the column rod. The gear 312 meshes with the meshing plate 32, driving the meshing plate 32 to move. The meshing plate 32 drives the collection frame 331 to move on the slide inside the experimental chamber 10. When the scraper plate 332 moves to the bottom of the limiting plate 335, it scrapes the impurities at the bottom of the limiting plate 335 and then they fall to the bottom of the experimental chamber 10. As the collection frame 331 moves, the auxiliary scraper 336 scrapes away impurities from the bottom of the collection frame 331. The collection frame 331 stops when it reaches the designated position. At this time, the top of the sealing plate 333 is exactly below the limiting plate 335, forming a valve between the limiting plate 335 and the collection frame 331 inside the experimental chamber 10. Then, the electric door 19 is opened to drain the water below the limiting plate 335. Next, the solenoid valve 334 is opened to filter the water inside the experimental chamber 10 again, and then the water pump 272 is started. The water to be filtered is pumped into experimental chamber 10. When the impurities are thoroughly rinsed out, the solenoid valve 334 and the electric door 19 are closed. Then, the second motor 311 is started to return the collection frame 331 to its original position. The pump 272 is turned off when the water inside experimental chamber 10 reaches the designated position. At this time, the operator holds both sides of the second filter plate 283 by hand. The second filter plate 283 drives the slider 282 to be pulled out of the fixed frame 281. Then, the operator pulls out the two embedded plates 24 by the handle. At this time, the operator will then... Impurities inside the filter plate 283 are collected and tested. Then, the staff pulls the sealing plug 242 out of the discharge port 241, and then puts their hand into the pull groove 262 to pull the scraper 261. The scraper 261 moves inside the embedded plate 24 to collect and test harmful substances on the first filter plate 251 and the harmful substances on the bottom wall of the embedded plate 24. After collection, the scraper 261 is returned to its original position, and then the sealing plug 242 is inserted into the discharge port 241. The embedded plate 24 and the first filter plate 251 are put back in their original positions for the next collection.

[0027] The working principle of this invention is as follows: All electrical components in this invention are triggered and operated by a PLC controller.

[0028] The staff first places the crabs to be tested on the support plate 17, then fills the experimental chamber 10 with water. When the water reaches the designated level, the electric lifting rod 111 is activated to close the cover plate 12. The cover plate 12 then lowers the vertical plate 13 and the support plate 17. After a certain period of time, the crab excrement and various impurities and harmful substances will accumulate in the water. These impurities will settle at the bottom of the experimental chamber 10 and on the surface of the support plate 17. At this point, the electric motor rotates to raise the electric door 19, releasing the wastewater from the experimental chamber 10. As the wastewater flows out of the outlet 18, it undergoes a first filtration by the second filter plate 283 inside the fixed frame 281, filtering out large impurities. The wastewater then flows into the water tank 21, where it passes through the second filter plate 283. The second filter plate 283 filters out harmful substances in the water, which then adhere to the interior of the second filter plate 283 and the embedded plate 24. At this time, the water pump 272 is started, and the water pump 272 draws the filtered water from the water tank 21 into the second hose 271, and then sends it into the water inlet channel 16 through the third hose 273. Then, it sends it into the first hose 15 from the output end of the water inlet channel 16, and then sprays the carrier plate 17 from the spray channel 142. At this time, the first motor 141 is started to rotate the spray channel 142, so that the spray channel 142 washes the surface of the carrier plate 17. Then, the impurities on the surface of the carrier plate 17 are washed clean. The impurities at the bottom of the collection frame 331 fall into the bottom of the experimental chamber 10 through the filter hole at the top. After rinsing is completed, the water pump 272 is stopped. 2. At this point, the impurities on the bearing plate 17 are basically washed away. Then, the electric door 19 is closed. At this time, the second motor 311 is started. The second motor 311 drives the gear 312 to rotate. The gear 312 drives another gear 312 to rotate inside the bearing seat through the column rod. The gear 312 meshes with the meshing plate 32, driving the meshing plate 32 to move. The meshing plate 32 drives the collection frame 331 to move on the slide inside the experimental chamber 10. When the scraper 332 moves to the bottom of the limiting plate 335, it scrapes the impurities at the bottom of the limiting plate 335 and they fall to the bottom of the experimental chamber 10. The auxiliary scraper 336 scrapes the impurities at the bottom of the collection frame 331 while the collection frame 331 moves. The collection frame 331 stops when it reaches the designated position. At this time, the sealing plate 333... The top of the filter is directly below the limiting plate 335, forming a valve between the limiting plate 335 and the collection frame 331 inside the experimental chamber 10. At this point, the electric door 19 is opened to drain the water below the limiting plate 335. Then, the solenoid valve 334 is opened to filter the water inside the experimental chamber 10 again. The water pump 272 is then started to pump the filtered water into the experimental chamber 10. When the impurities have been thoroughly rinsed, the solenoid valve 334 and the electric door 19 are closed. The second motor 311 is then started to return the collection frame 331 to its original position. The water pump 272 is stopped when the water inside the experimental chamber 10 reaches the designated level. At this point, the operator holds both sides of the second filter plate 283, causing the slider 282 to be pulled out of the fixed frame 281.Then, the worker pulls out the two embedded plates 24 using the handles. At this time, the worker collects and tests the impurities inside the second filter plate 283. The worker then pulls out the sealing plug 242 from the discharge port 241, and then inserts their hand into the pull groove 262 to pull the scraper 261. The scraper 261 moves inside the embedded plate 24 to collect and test the harmful substances on the first filter plate 251 and the harmful substances on the inner bottom wall of the embedded plate 24. After collection, the scraper 261 is returned to its original position, and then the sealing plug 242 is inserted into the discharge port 241. The embedded plate 24 and the first filter plate 251 are then put back in their original positions for the next collection.

[0029] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A method for filtering, circulating, and collecting harmful substances in a crab laboratory, characterized in that, Includes the following steps: Step 1: Placement work. The staff first place the crabs to be tested on the support plate (17), then send water into the experimental chamber (10), and then close the cover (12). Step 2: Water release. During the crab farming experiment, many impurities or harmful substances will be generated. These substances will settle at the bottom of the experimental chamber (10). Through the program set by the staff, the equipment will release the water inside the experimental chamber (10) when a certain period of time is reached. Step 3: Collection work. Water from the experimental chamber (10) flows into the water tank (21) from the fixed frame (281). It is first filtered by the second filter plate (283), and then filtered by the two first filter plates (251) to filter the impurities on the surface. Then the staff collects the impurities for research. Step 4: Recycling. The filtered water in the water tank (21) is transferred to the experimental chamber (10) by a water pump (272) to achieve water recycling. It also includes an experimental chamber (10), the bottom of which is fitted with a lifting component (11), the execution end of which is fitted with a cover plate (12), the bottom of which is fitted with two vertical plates (13) symmetrically arranged around the center axis, the side walls of which are fitted with rotating components (14), the execution end of which is connected to the through hole of which is connected through a first hose (15), the top of which is fitted with a water inlet channel (16), the output end of which is connected to the through hole of which is connected, the bottom of which is fitted with a support plate (17), the side wall of which is fitted with a water outlet (18), the side wall of which is electrically connected to an electric door (19), the bottom of which is fitted with a filter device (20), and the side wall of which is fitted with a collection device (30). The filtration device (20) includes a water tank (21) located below the experimental chamber (10). The top of the water tank (21) is provided with a top cover (22). The top of the top cover (22) is provided with two embedded slots (23). The side walls of the two embedded slots (23) are provided with embedded plates (24). The side wall near the bottom of the embedded plate (24) is provided with a discharge port (241). The side wall of the discharge port (241) is provided with a sealing plug (242). The interior of the embedded plate (24) is provided with a filtration component (25). The inner side wall of the embedded plate (24) is provided with a scraping component (26). The side wall of the water tank (21) is provided with a water pumping component (27). The top of the water tank (21) is provided with a screening component (28) fixed to the side wall of the experimental chamber (10). The collection device (30) includes a moving part (31) disposed on the side wall of the experimental chamber (10). The actuating end of the moving part (31) engages with a meshing plate (32). The meshing plate (32) is slidably connected to the side wall of the experimental chamber (10). One end of the meshing plate (32) is provided with a collection part (33).

2. The method for filtering, circulating, and collecting harmful substances in a crab laboratory according to claim 1, characterized in that, The rotating component (14) is embedded in the side wall of one of the vertical plates (13) of the first motor (141). The execution end of the first motor (141) is provided with a spray channel (142). The input end of the spray channel (142) is connected to one end of the first hose (15).

3. The method for filtering, circulating, and collecting harmful substances in a crab laboratory according to claim 1, characterized in that, The pumping component (27) includes a second hose (271) disposed on the side wall of the water tank (21), a pump (272) is provided at one end of the second hose (271), a third hose (273) is provided at the output end of the pump (272), and one end of the third hose (273) is connected to the input end of the water inlet channel (16).

4. The method for filtering, circulating, and collecting harmful substances in a crab laboratory according to claim 1, characterized in that, The screening component (28) includes a fixed frame (281) located above the water tank (21) and fixed to the side wall of the experimental chamber (10). Two sliders (282) are symmetrically embedded on the top of the fixed frame (281) with the center of the fixed frame (281) as the axis. The side walls of the two sliders (282) are fixedly connected to the second filter plate (283).

5. The method for filtering, circulating, and collecting harmful substances in a crab laboratory according to claim 1, characterized in that, The moving part (31) includes a second motor (311) located on the side wall of the experimental chamber (10). The actuating end of the second motor (311) is provided with a gear (312). The gear (312) is connected to another gear (312) through a column rod. The gear (312) meshes with a meshing plate (32).

6. The method for filtering, circulating, and collecting harmful substances in a crab laboratory according to claim 1, characterized in that, The collecting component (33) includes a collecting frame (331) located at one end of the meshing plate (32), a scraper (332) at the top of the collecting frame (331), a sealing plate (333) at the top of the collecting frame (331), a solenoid valve (334) on the side wall of the collecting frame (331), the collecting frame (331) sliding at the bottom of the experimental chamber (10) via a slide on the inner side wall of the experimental chamber (10), a limiting plate (335) fixed to one side of the collecting frame (331) and the inner side wall of the experimental chamber (10), and an auxiliary scraper (336) fixed to the inner side wall of the experimental chamber (10) below the limiting plate (335).

7. The method for filtering, circulating, and collecting harmful substances in a crab laboratory according to claim 1, characterized in that, The scraping component (26) includes a scraper (261) slidably connected to the side wall of the slide of the embedded plate (24), and the side wall of the scraper (261) is provided with a groove (262).

8. The method for filtering, circulating, and collecting harmful substances in a crab laboratory according to claim 1, characterized in that, The lifting component (11) is embedded in the electric lifting rod (111) on the top of the experimental chamber (10), and the actuating end of the electric lifting rod (111) is fixed to the bottom of the cover plate (12).

9. A method for filtering, circulating, and collecting harmful substances in a crab laboratory according to claim 1, characterized in that, The filter element (25) includes a first filter plate (251) disposed on the inner sidewall of the embedded plate (24).

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