A water quality monitoring device for environmental protection monitoring

Abstract

The present invention discloses a water quality monitoring device for environmental protection monitoring, which relates to the field of sampling ships. The device comprises a hull and three sample storage tanks. A power box is provided inside the hull. A water pump is installed on the side of the hull away from the power box. A bottom plate is provided on one side of the power box. Three movable grooves are evenly arranged on the upper surface of the bottom plate. A processing mechanism is provided on the bottom plate. The processing mechanism is used to seal and cryopreserve the sample storage tanks. The processing mechanism consists of an injection component, three sealing components and a cryopreserve component. Each sealing component is provided on the bottom plate and matched with a fixed arc plate. Each sample storage tank is placed in the sealing component. The injection component is used to inject the drawn sample into the sample storage tank and seal it through the sealing component. The cryopreserve component is used to cool the sealed sample storage tank. The present invention can seal the filled sample storage tanks, prevent the samples from being affected by the external environment such as dust and gas exchange, and ensure the purity of the samples and the accuracy of the data.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of sampling ships, and in particular to a water quality monitoring device for environmental protection monitoring. Background Art

[0002] With the rapid development of industrialization and urbanization, real-time and accurate monitoring of water quality has become crucial. Traditional water quality monitoring methods mainly rely on manual sampling and laboratory analysis. This method is not only time-consuming and labor-intensive, but also unable to obtain data in real time, making it difficult to meet the needs of modern environmental protection monitoring.

[0003] A water quality monitoring sampling ship described in the prior art includes a hull with a sampling mechanism installed on the hull. The sampling mechanism includes a sampling tube, an outlet pipe, a water pump and a support plate. The support plate is fixedly installed on the bottom of the hull. One end of the outlet pipe passes through the support plate and is rotatably connected to it and communicates with the sampling tube. One end of the sampling tube extends from the bottom of the hull; a plurality of sample bottles are installed on the hull, and the sample bottles are arranged around the sampling mechanism. A water inlet is opened on the sample bottles, and a receiver is installed on the sample bottles. An infrared transmitter is installed at the front end of the outlet pipe, and water is transferred to the water inlet through the outlet pipe for injection.

[0004] Although the above technology can perform multi-point sampling and store in bottles, the operation is simple and convenient, and the sampling stability is good, but when the sampled water samples are stored in the sample bottles, there is a lack of an effective sealing mechanism, which can easily cause the water samples to be affected by the external environment and affect the accuracy of the monitoring data. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a water quality monitoring device for environmental protection monitoring to solve the technical problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A water quality monitoring device for environmental protection monitoring comprises a hull and three sample storage tanks, wherein a power box is provided inside the hull, a water pump is installed on a side of the hull away from the power box, a bottom plate is provided on one side of the power box, three movable grooves are evenly opened on the upper surface of the bottom plate, a processing mechanism is provided on the bottom plate, and the processing mechanism is used to seal and store the sample storage tanks at low temperatures, a partition is fixed in the hull between the water pump and the bottom plate, a storage box is provided between the partition and the bottom plate, and liquid nitrogen is stored in the storage box, fixed arc plates are welded to the upper surface of the bottom plate at the movable grooves, and a top cover is screwed to the top of each fixed arc plate;

[0008] The processing mechanism consists of an injection component, three sealing components and a low-temperature preservation component. Each of the sealing components is arranged on the bottom plate and matched with the fixed arc plate. Each of the sample storage tanks is placed in the sealing component. The injection component is used to inject the drawn sample into the sample storage tank and seal it through the sealing component. The low-temperature preservation component is used to cool the sealed sample storage tank.

[0009] The present technical solution is specific, the injection assembly includes a vertical plate arranged at the top of the partition, an injection pipe is passed through the top of the vertical plate, the output port of the water pump is connected to the injection pipe through a water outlet hose, a driving motor is fixed with screws on one side of the top of the partition, the output end flange of the driving motor is connected to a screw rod, the screw rod passes through the vertical plate and is rotatably connected to the inner wall of the hull, a vertical L-shaped connecting rod is fixed to the outer wall of the vertical plate, and a rack is fixed with screws at the bottom end of the L-shaped connecting rod.

[0010] Specifically, the bottom of the outer wall of the partition is provided with a slide groove, the outer wall of the rack is welded with a slide plate, the slide plate is located in the slide groove and is slidably connected thereto, the top end of the partition is located below the screw rod and is fixed with a guide rail, the bottom end of the vertical plate is slidably mounted on the guide rail, the top end of the storage box is screwed with a support block, the outer wall of the injection pipe is in contact with the top of the support block and is slidably connected thereto.

[0011] Specifically, the present technical solution comprises each of the sealing components including a movable plate, the movable plate being slidably arranged in a movable groove, an L-shaped sealing plate being connected to the end of the movable plate, the inner wall of the L-shaped sealing plate being in contact with the outer wall of the bottom plate, a movable arc plate being provided on one side of the fixed arc plate, the movable arc plate being in close contact with the end face of the fixed arc plate and the top cover, and during the movement of the injection tube, the sealing component on the filled sample storage tank is driven to perform a sealing operation, and a sealed space is formed by the close contact of the movable arc plate, the fixed arc plate and the top cover;

[0012] The outer wall of the bottom of the movable arc plate is welded and fixed to the end of the L-shaped sealing plate, and side blocks are welded to the bottom of the outer walls on both sides of the movable arc plate. The two side blocks are welded with fixing rods on one side away from the L-shaped sealing plate, and the ends of the two fixing rods are welded with connecting plates, and a movable plate is welded at the center of the bottom end of the connecting plate.

[0013] Specifically, the movable plate is penetrated by a threaded rod, one end of the threaded rod is rotatably connected to the outer wall of the base plate, and the other end of the threaded rod is welded with a shaft rod, the diameter of the shaft rod is larger than the diameter of the threaded rod, the end of the shaft rod is rotatably connected to the outer wall of the partition, and the outer wall fixed sleeve of the shaft rod is provided with a driving gear, and the driving gear is engaged with a rack provided in the injection assembly.

[0014] Specifically, the upper surface of the movable plate is fixed with a positioning block, the bottom end of the sample storage tank is provided with a positioning groove, and the positioning block matches the positioning groove.

[0015] Specifically, the low-temperature preservation component includes multiple pump bodies, and the multiple pump bodies are located between the fixed arc plate and the storage box. The suction ports of the multiple pump bodies are connected to the interior of the storage box through a suction pipe. The outer wall of each fixed arc plate is penetrated by a discharge pipe, and each discharge pipe is connected to the discharge port of the pump body.

[0016] Specifically, the end face of each fixed arc plate is embedded with a pressure sensor, a controller is fixed on the power box, each pressure sensor is connected to the controller via a wire, and each pump body is connected to the controller via a wire.

[0017] Specifically, the suction port of the water pump is connected to a sampling tube, the sampling tube passes through the bottom of the hull and extends below the water surface, and a filter is provided at the end of the sampling tube.

[0018] Specifically, a temperature sensor is installed inside each of the fixed arc plates.

[0019] In summary, the present invention has the following beneficial effects: the injection tube is precisely moved by the cooperation of the driving motor and the screw rod, ensuring that the water sample can be injected into the corresponding sample storage tank, and when the injection is completed and the sample is moved to the next sample storage tank, the meshing of the rack and the driving gear can be used to control the sealing of the sample storage tank after the sampling is completed, thereby preventing the sample from being affected by the external environment such as dust, gas exchange, etc., thereby ensuring the purity of the sample and the accuracy of the experimental data, and further improving the reliability and efficiency of the overall experimental process;

[0020] During the sealing process, the pressure sensor detects the pressure caused by the sealing operation and sends a signal to the controller. The controller starts the corresponding pump to suck the liquid nitrogen in the storage box into the enclosed space of the fixed arc plate and the movable arc plate, ensuring that the sample tank can maintain a low temperature after sealing, further improving the stability of the water sample and the accuracy of the monitoring data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the isometric structure of the hull of the present invention;

[0022] Figure 2 This is a schematic diagram of the hull structure from a top view of the present invention;

[0023] Figure 3 This is a schematic diagram of the isometric structure of the processing mechanism of the present invention;

[0024] Figure 4This is a schematic diagram of the split structure of the injection component and the sealing component of the present invention;

[0025] Figure 5 This is a schematic diagram of the isometric structure of the injection assembly of the present invention;

[0026] Figure 6 This is a schematic diagram of the oblique axonometric structure of the sealing assembly of the present invention;

[0027] Figure 7 This is a schematic diagram of the isometric connection between the cryopreservation assembly and the fixed arc plate of the present invention;

[0028] Figure 8 This is a schematic diagram of the oblique axonometric connection between the cryopreservation assembly and the fixed arc plate of the present invention;

[0029] Figure 9 For the present invention Figure 4 Enlarged view of point A in the middle.

[0030] Description of the drawings: 1. Hull; 101. Power box; 102. Water pump; 1021. Sampling tube; 1022. Water outlet hose; 2. Partition; 201. Chute; 202. Guide rail; 3. Storage box; 301. Support block; 4. Bottom plate; 401. Moving trough; 402. Fixed arc plate; 4021. Top cover; 5. Processing mechanism; 6. Injection assembly; 601. Vertical plate; 602. Injection tube; 603. L-shaped connecting rod; 604. Rack; 6041. Slide plate; 60 5. Drive motor; 6051. Screw rod; 7. Sealing assembly; 701. Moving plate; 7011. Positioning block; 702. L-shaped sealing plate; 703. Moving arc plate; 7031. Side block; 704. Fixed rod; 705. Connecting plate; 7051. Movable plate; 706. Threaded rod; 707. Shaft; 7071. Drive gear; 8. Low-temperature preservation assembly; 801. Suction tube; 802. Discharge tube; 803. Pump body; 804. Pressure sensor; 9. Sample storage tank. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 understood as limiting the present invention.

[0032] The following describes an embodiment of the present invention based on its overall structure.

[0033] In this embodiment, please refer to Figures 1-4As shown, a water quality monitoring device for environmental protection monitoring includes a hull 1 and three sample storage tanks 9. A power box 101 is provided inside the hull 1. The power box 101 is used to provide power support and is connected to a controller through a wireless transmission module for wireless control. A water pump 102 is installed on the side of the hull 1 away from the power box 101. The suction port of the water pump 102 is connected to a sampling tube 1021. The sampling tube 1021 passes through the bottom of the hull 1 and extends below the water surface. A filter is provided at the end of the sampling tube 1021. A bottom plate 4 is provided on one side of the power box 101. Three movable grooves 401 are evenly opened on the upper surface of the bottom plate 4, and a processing mechanism 5 is provided on the bottom plate 4, and the processing mechanism 5 is used to seal and store the sample tank 9 at low temperature. A partition 2 is fixed between the water pump 102 and the bottom plate 4 in the hull 1, and a storage box 3 is provided between the partition 2 and the bottom plate 4. Liquid nitrogen is stored in the storage box 3. Fixed arc plates 402 are welded at the movable grooves 401 on the upper surface of the bottom plate 4, and a top cover 4021 is screwed to the top of each fixed arc plate 402. A temperature sensor is installed inside each fixed arc plate 402;

[0034] The processing mechanism 5 consists of an injection component 6, three sealing components 7 and a low-temperature preservation component 8. Each of the sealing components 7 is arranged on the base plate 4 and matched with the fixed arc plate 402. Each of the sample storage tanks 9 is placed in the sealing component 7. The injection component 6 is used to inject the drawn sample into the sample storage tank 9 and seal it through the sealing component 7. The low-temperature preservation component 8 is used to cool the sealed sample storage tank 9.

[0035] When conducting environmental protection monitoring, the staff places the hull 1 in the water area to be tested, starts the power box 101, and remotely controls the hull 1 to move in the water area through the manipulator. After moving to a specific monitoring point, the water pump 102 is started, and the sampling tube 1021 extracts water samples. After filtering through the filter screen, the water samples are transported to the injection pipe 602 of the injection assembly 6 through the water outlet hose 1022. The injection pipe 602 injects the water sample into the corresponding sample storage tank 9. After the sample storage tank 9 is filled, the driving device of the injection assembly 6 (the driving motor 605 in this article) is started to control the injection pipe 602 to move horizontally so that the injection pipe 602 is aligned with the next sample storage tank 9, and the injection process is repeated.

[0036] During the movement of the injection tube 602, the sealing assembly 7 on the filled sample tank 9 will be driven to perform a sealing operation. The movable arc plate 703, the fixed arc plate 402 and the top cover 4021 are in close contact to form a sealed space to ensure that the sample is not contaminated by the outside world. After the movable arc plate 703 contacts the fixed arc plate 402, the low-temperature preservation assembly 8 is started, and the liquid nitrogen in the storage box 3 is transported into the sealed space to quickly reduce the temperature of the sample tank 9 and maintain it in a low-temperature environment (4°C) to ensure the stability of the sample and the accuracy of the test results. After the sampling of the monitoring point is completed, the hull 1 returns to the shore, the injection assembly 6 is reset to cancel the seal, and the staff takes out the sample tanks 9 one by one for laboratory analysis. After the data is recorded, the sample tanks 9 are cleaned and disinfected, and then placed back in the sealing assembly 7 to prepare for the next monitoring task.

[0037] Therefore, the entire operation process is efficient and convenient, which can prevent the sample from being affected by the external environment such as dust, gas exchange, etc., ensure the purity of the sample and the accuracy of the experimental data, and further improve the reliability and efficiency of the overall experimental process; at the same time, the temperature sensor monitors the temperature in the sample storage tank 9 in real time, and feeds back to the controller through the data transmission module to ensure that the temperature is maintained within the set range to prevent the sample from deteriorating.

[0038] See also Figure 4 、 Figure 5 and Figure 9 As shown, the injection assembly 6 includes a vertical plate 601 arranged on the top of the partition 2, an injection pipe 602 is passed through the top of the vertical plate 601, the output port of the water pump 102 is connected to the injection pipe 602 through the water outlet hose 1022, a drive motor 605 is fixed to one side of the top of the partition 2 with screws, the output end flange of the drive motor 605 is connected to a screw rod 6051, the screw rod 6051 passes through the vertical plate 601 and is rotatably connected to the inner wall of the hull 1, a vertical L-shaped connecting rod 603 is fixed to the outer wall of the vertical plate 601, and the L-shaped connecting rod 603 is fixed to the outer wall of the vertical plate 601. The bottom end of the connecting rod 603 is screwed to a rack 604, the bottom of the outer wall of the partition 2 is provided with a slide groove 201, the outer wall of the rack 604 is welded with a slide plate 6041, the slide plate 6041 is located in the slide groove 201 and is slidably connected thereto, the top end of the partition 2 is located below the screw rod 6051 and is fixed with a guide rail 202, the bottom end of the vertical plate 601 is slidably mounted on the guide rail 202, the top end of the storage box 3 is screwed to a support block 301, the outer wall of the injection pipe 602 is in contact with the top of the support block 301 and is slidably connected thereto.

[0039] During sampling, the extracted water sample enters the sample tank 9 through the water outlet hose 1022 and the injection pipe 602. After the sample tank 9 is filled, the driving motor 605 starts its output end to drive the screw 6051 to rotate. The rotating screw 6051 drives the vertical plate 601 to move horizontally along the guide rail 202. The vertical plate 601 drives the injection pipe 602 and the L-shaped connecting rod 603 to move until the injection pipe 602 is aligned with the opening of the next sample tank 9. When the L-shaped connecting rod 603 moves, it will drive the rack 604 and the slide 6041 to move. The slide 6041 slides in the slide groove 201 to ensure the stability of the rack 604. The moving rack 604 controls the operation of the sealing component 7 set on the filled sample tank 9, realizes the function of switching the sample tank 9, and seals the filled sample tank 9 to ensure sample isolation and prevent cross contamination.

[0040] See also Figure 3 、 Figure 4 and Figure 6 As shown, each of the sealing components 7 includes a movable plate 701, which is slidably arranged in the movable groove 401. The end of the movable plate 701 is connected to an L-shaped sealing plate 702, and the inner wall of the L-shaped sealing plate 702 is in contact with the outer wall of the bottom plate 4. A movable arc plate 703 is provided on one side of the fixed arc plate 402, and the movable arc plate 703 is tightly fitted with the end surface of the fixed arc plate 402 and the top cover 4021;

[0041] The outer wall of the bottom of the movable arc plate 703 is welded and fixed to the end of the L-shaped sealing plate 702. The bottom of the outer wall of both sides of the movable arc plate 703 is welded with side blocks 7031. The two side blocks 7031 are welded with fixed rods 704 on one side away from the L-shaped sealing plate 702. The ends of the two fixed rods 704 are welded with connecting plates 705. A movable plate 7051 is welded at the center of the bottom end of the connecting plate 705. A threaded rod 706 runs through the movable plate 7051. One end of the threaded rod 706 is rotatably connected to the outer wall of the bottom plate 4. The other end of the threaded rod 706 is welded with a shaft rod 707. The diameter of 707 is larger than the diameter of the threaded rod 706. The end of the shaft rod 707 is rotatably connected to the outer wall of the partition 2, and the outer wall of the shaft rod 707 is fixedly sleeved with a driving gear 7071. The driving gear 7071 matches the rack 604 provided in the injection assembly 6. A positioning block 7011 is fixed on the upper surface of the movable plate 701. A positioning groove is provided at the bottom end of the sample tank 9. The positioning block 701 matches the positioning groove. A weight sensor is also provided in the movable plate 701. The weight change of the sample tank 9 is measured to determine whether it is full. When the weight of the sample tank 9 reaches a preset value, it is determined to be full.

[0042] When the rack 604 moves, it will drive the meshing driving gear 7071 to rotate, and the driving gear 7071 will drive the shaft 707 to rotate, and the shaft 707 will drive the threaded rod 706 to rotate, thereby pushing the movable plate 7051 to move horizontally, and the movable plate 7051 will drive the connecting plate 705 and the two fixed rods 704 to move, and the two fixed rods 704 will push the side blocks 7031 to move, and the side blocks 7031 will drive the movable arc plate 703 and the L-shaped sealing plate 702 to move synchronously, and the L-shaped sealing plate 702 will also drive the movable plate 701 to slide in the movable groove 401, and the movable plate 701 will drive the sample tank 9 to move, and the movable arc plate 703 will fit tightly with the fixed arc plate 402, and the L-shaped sealing plate 702 will contact the surface of the bottom plate 4 to seal the movable groove 401, and finally achieve the sealing and isolation of the sample tank 9, ensuring the safety of the sample and avoiding external contamination;

[0043] When the injection tube 602 moves to the top of the next sample tank 9, the rack 604 will engage with the drive gear 7071 of the sample tank 9, thereby facilitating the continued sealing operation after refilling, ensuring that each sample tank is filled and isolated in turn.

[0044] See also Figure 3 、 Figure 7 and Figure 8 As shown, the low-temperature preservation component 8 includes a plurality of pump bodies 803, and the plurality of pump bodies 803 are located between the fixed arc plate 402 and the storage box 3. The suction ports of the plurality of pump bodies 803 are connected to the interior of the storage box 3 through the suction pipe 801. The outer wall of each fixed arc plate 402 is penetrated by a discharge pipe 802, and each discharge pipe 802 is connected to the discharge port of the pump body 803. The end face of each fixed arc plate 402 is embedded with a pressure sensor 804. A controller is fixed on the power box 101, and each pressure sensor 804 is connected to the controller through a wire, and each pump body 803 is connected to the controller through a wire.

[0045] When the movable arc plate 703 is in contact with the fixed arc plate 402, the pressure sensor 804 detects the pressure and transmits the data to the controller. After the controller determines that the seal is established based on the data, it starts the pump 803 to extract the liquid nitrogen in the storage box 3 through the suction pipe 801, and then injects it into the cavity between the fixed arc plate 402 and the movable arc plate 703 through the discharge pipe 802, thereby forming a low-temperature environment and ensuring that the sample in the sample tank 9 is stored at a low temperature to prevent the sample from deteriorating.

[0046] The working principle of the present invention is:

[0047] When conducting environmental protection monitoring, the staff places the hull 1 in the water area to be tested, starts the power box 101, and remotely controls the hull 1 to move in the water area through the manipulator. After moving to a specific monitoring point, the water pump 102 is started, and the sampling tube 1021 extracts water samples. After being filtered by the filter, the extracted water samples enter the sample tank 9 through the water outlet hose 1022 and the injection pipe 602. After the sample tank 9 is filled, the driving motor 605 is started and its output end drives the screw rod 6051 to rotate. The rotating screw rod 6051 drives the vertical plate 601 to move horizontally along the guide rail 202. The vertical plate 601 drives the injection pipe 602 and the L-shaped connecting rod 603 to move until the injection pipe 602 is aligned with the opening of the next sample tank 9. When the L-shaped connecting rod 603 moves, it drives the rack 604 and the slide 6041 to move. The slide 6041 slides in the slide groove 201 to ensure the stability of the rack 604.

[0048] The movement of the rack 604 drives the meshing drive gear 7071 to rotate, and the drive gear 7071 drives the shaft 707 to rotate, and the shaft 707 drives the threaded rod 706 to rotate, thereby pushing the movable plate 7051 to move horizontally, and the movable plate 7051 drives the connecting plate 705 and the two fixed rods 704 to move, and the two fixed rods 704 push the side block 7031 to move, and the side block 7031 drives the movable arc plate 703 and the L-shaped sealing plate 702 to move synchronously, and the L-shaped sealing plate 702 also drives the movable plate 701 to slide in the movable groove 401, and the movable plate 701 drives the sample storage tank 9 moves, the movable arc plate 703 fits tightly with the fixed arc plate 402, and the L-shaped sealing plate 702 contacts the surface of the bottom plate 4, sealing the movable groove 401, and finally achieving the sealing and isolation of the sample storage tank 9. At this time, the pressure sensor 804 will detect the pressure and transmit the data to the controller. After the controller determines that it is sealed according to the data, it starts the pump body 803, extracts the liquid nitrogen in the storage box 3 through the suction pipe 801, and then injects it into the cavity between the fixed arc plate 402 and the movable arc plate 703 through the discharge pipe 802, forming a low-temperature environment to ensure that the sample in the sample storage tank 9 is preserved at a low temperature;

[0049] When the injection tube 602 moves to the top of the next sample tank 9, the rack 604 will engage with the drive gear 7071 of the sample tank 9 and repeat the injection process. After the sampling of the monitoring point is completed, the hull 1 returns to the shore, the injection component 6 is reset and the seal is cancelled, and the staff takes out the sample tanks 9 one by one for laboratory analysis. After the data is recorded, the sample tanks 9 are cleaned and disinfected and replaced in the sealing component 7 to prepare for the next monitoring task.

[0050] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A water quality monitoring device for environmental protection monitoring, comprising a hull (1) and three sample storage tanks (9), wherein a power box (101) is provided inside the hull (1), a water pump (102) is installed on a side of the hull (1) away from the power box (101), a bottom plate (4) is provided on one side of the power box (101), three movable grooves (401) are evenly opened on the upper surface of the bottom plate (4), a processing mechanism (5) is provided on the bottom plate (4), and the processing mechanism (5) is used to seal and store the sample storage tanks (9) at low temperatures, characterized in that: A partition (2) is fixed between the water pump (102) and the bottom plate (4) in the hull (1), a storage box (3) is provided between the partition (2) and the bottom plate (4), and liquid nitrogen is stored in the storage box (3). Fixed arc plates (402) are welded to the upper surface of the bottom plate (4) at the movable groove (401), and a top cover (4021) is screwed to the top of each fixed arc plate (402); The processing mechanism (5) is composed of an injection assembly (6), three sealing assemblies (7) and a low-temperature preservation assembly (8), each of the sealing assemblies (7) is arranged on the bottom plate (4) and matched with the fixed arc plate (402), each of the sample storage tanks (9) is placed in the sealing assembly (7), the injection assembly (6) is used to inject the drawn sample into the sample storage tank (9) and seal it through the sealing assembly (7), and the low-temperature preservation assembly (8) is used to cool the sealed sample storage tank (9); Each of the sealing components (7) comprises a movable plate (701), the movable plate (701) being slidably disposed in the movable groove (401), an L-shaped sealing plate (702) being connected to the end of the movable plate (701), the inner wall of the L-shaped sealing plate (702) being in contact with the outer wall of the bottom plate (4), a movable arc plate (703) being provided on one side of the fixed arc plate (402), the movable arc plate (703) being in contact with the fixed arc plate (402) and the top cover (402). 1) is tightly fitted to the end surface, and during the movement of the injection tube (602), the sealing assembly (7) on the filled sample storage tank (9) is driven to perform a sealing operation, and the movable arc plate (703), the fixed arc plate (402) and the top cover (4021) are in close contact to form a sealed space, and a positioning block (7011) is fixed on the upper surface of the movable plate (701), and a positioning groove is opened at the bottom end of the sample storage tank (9), and the positioning block (7011) matches the positioning groove; The outer wall of the bottom of the movable arc plate (703) is welded and fixed to the end of the L-shaped sealing plate (702); the bottom of the outer walls on both sides of the movable arc plate (703) are welded with side blocks (7031); the sides of the two side blocks (7031) away from the L-shaped sealing plate (702) are welded with fixing rods (704); the ends of the two fixing rods (704) are welded with connecting plates (705); and the center of the bottom end of the connecting plate (705) is welded with a movable plate (7051); A threaded rod (706) passes through the movable plate (7051), one end of the threaded rod (706) is rotatably connected to the outer wall of the bottom plate (4), and the other end of the threaded rod (706) is welded with a shaft rod (707), the diameter of the shaft rod (707) is larger than the diameter of the threaded rod (706), the end of the shaft rod (707) is rotatably connected to the outer wall of the partition (2), and the outer wall of the shaft rod (707) is fixedly sleeved with a driving gear (7071), and the driving gear (7071) matches the rack (604) provided in the injection assembly (6).

2. The water quality monitoring device for environmental protection monitoring according to claim 1, characterized in that: The injection assembly (6) comprises a vertical plate (601) arranged at the top of the partition (2), an injection pipe (602) passes through the top of the vertical plate (601), the output port of the water pump (102) is connected to the injection pipe (602) via a water outlet hose (1022), a driving motor (605) is fixed to one side of the top of the partition (2) by screws, the output end flange of the driving motor (605) is connected to a screw rod (6051), the screw rod (6051) passes through the vertical plate (601) and is rotatably connected to the inner wall of the hull (1), a vertical L-shaped connecting rod (603) is fixed to the outer wall of the vertical plate (601), and a rack (604) is fixed to the bottom end of the L-shaped connecting rod (603) by screws.

3. The water quality monitoring device for environmental protection monitoring according to claim 2, characterized in that: A slide groove (201) is provided at the bottom of the outer wall of the partition (2), a slide plate (6041) is welded to the outer wall of the rack (604), and the slide plate (6041) is located in the slide groove (201) and is slidably connected thereto. The top end of the partition (2) is located below the screw rod (6051) and is fixed with a guide rail (202). The bottom end of the vertical plate (601) is slidably mounted on the guide rail (202). The top end of the storage box (3) is screwed with a support block (301), and the outer wall of the injection pipe (602) is in contact with the top end of the support block (301) and is slidably connected thereto.

4. The water quality monitoring device for environmental protection monitoring according to claim 1, characterized in that: The low-temperature preservation component (8) includes a plurality of pump bodies (803), each of which is located between the fixed arc plate (402) and the storage box (3), and the suction ports of the plurality of pump bodies (803) are connected to the interior of the storage box (3) through the suction pipe (801), and the outer wall of each fixed arc plate (402) is penetrated by a discharge pipe (802), and each discharge pipe (802) is connected to the discharge port of the pump body (803).

5. The water quality monitoring device for environmental protection monitoring according to claim 4, characterized in that: A pressure sensor (804) is embedded in the end surface of each fixed arc plate (402), a controller is fixed on the power box (101), each pressure sensor (804) is connected to the controller via a wire, and each pump body (803) is connected to the controller via a wire.

6. The water quality monitoring device for environmental protection monitoring according to claim 1, characterized in that: The suction port of the water pump (102) is connected to a sampling tube (1021), and the sampling tube (1021) passes through the bottom of the hull (1) and extends below the water surface. A filter screen is provided at the end of the sampling tube (1021).

7. The water quality monitoring device for environmental protection monitoring according to claim 1, characterized in that: A temperature sensor is installed inside each of the fixed arc plates (402).

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