Water quality monitoring device for environmental protection monitoring

Abstract

The invention discloses a water quality monitoring device for environmental protection monitoring, and relates to the field of sampling boats, the water quality monitoring device comprises a hull and three sample storage tanks, the hull is internally provided with a power box, one side of the hull away from the power box is provided with a water pump, one side of the power box is provided with a bottom plate, the upper surface of the bottom plate is uniformly provided with three moving grooves, and the bottom plate is provided with a processing mechanism; the processing mechanism is used for conducting sealing and low-temperature storage on the sample storage tanks, the processing mechanism is composed of an injection assembly, three sealing assemblies and a low-temperature storage assembly, each sealing assembly is arranged on the bottom plate and matched with the fixed arc plate, and each sample storage tank is placed in the corresponding sealing assembly; the injection assembly is used for injecting a sucked sample into the sample storage tank and sealing the sample storage tank through the sealing assembly, and the low-temperature storage assembly is used for cooling the sealed sample storage tank. According to the invention, the full sample storage tank can be sealed and stored, so that the sample is prevented from being influenced by external environments such as dust and gas exchange, and the purity and data accuracy of the sample are ensured.

Description

Technical Field

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

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

[0003] A water quality monitoring sampling vessel described in the prior art includes a hull, on which a sampling mechanism is installed. The sampling mechanism includes a sampling pipe, a water outlet pipe, a water pump, and a support plate. The support plate is fixedly installed at the bottom of the hull. One end of the water outlet pipe passes through the support plate and is rotatably connected thereto, and is communicated with the sampling pipe. One end of the sampling pipe extends out from the bottom of the hull. A plurality of sample storage bottles are installed on the hull, and the sample storage bottles are arranged around the sampling mechanism. The sample storage bottles are provided with water inlets, and receivers are installed on the sample storage bottles. An infrared transmitter is installed at the front end of the water outlet pipe, and water is injected through the rotation of the water outlet pipe to the water inlet.

[0004] Although the above technology can perform multi-point sampling and store samples in separate bottles, with simple and convenient operation and good sampling stability, when the sampled water samples are stored in the sample storage bottles, there is a lack of an effective capping mechanism, which easily causes the water samples to be affected by the external environment and affects 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 art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A water quality monitoring device for environmental protection monitoring includes a hull and three sample storage tanks. A power box is provided inside the hull. A water pump is installed on one side of the hull away from the power box. A bottom plate is arranged on one side of the power box. Three moving 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 temperature. A partition is fixed between the water pump and the bottom plate inside the hull. 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 on the upper surface of the bottom plate at the positions of the moving grooves. A top cover is screw-mounted at the top of each fixed arc plate; The processing mechanism consists of an injection component, three sealing components, and a cryopreservation component. Each of the sealing components is arranged on the bottom plate and matches the fixed arc plate. Each sample storage tank is placed in the sealing component. The injection component is used to inject the pumped sample into the sample storage tank and seal it through the sealing component, and the cryopreservation component is used to cool the sealed sample storage tank.

[0007] Specifically, in this technical solution, the injection component includes a vertical plate arranged at the top end of the partition plate. An injection pipe penetrates through the upper part of the vertical plate. The output port of the water pump is connected to the injection pipe through a water outlet hose. One side of the top end of the partition plate is fixed with a driving motor by screws. The output end of the driving motor is flange-connected with a lead screw. The lead screw penetrates through the vertical plate and is rotationally connected to the inner wall of the ship body. A vertical L-shaped connecting rod is fixed to the outer wall of the vertical plate, and a rack is fixed to the bottom end of the L-shaped connecting rod by screws.

[0008] Specifically, in this technical solution, a sliding groove is opened at the bottom of the outer wall of the partition plate. A sliding plate is welded to the outer wall of the rack. The sliding plate is located in the sliding groove and is slidably connected to it. A guide rail is fixed below the lead screw at the top end of the partition plate. The bottom end of the vertical plate is slidably installed on the guide rail. A support block is fixed to the top end of the storage box by screws. The outer wall of the injection pipe is in contact with the top end of the support block and is slidably connected.

[0009] Specifically, each of the sealing components includes a moving plate. The moving plate is slidably arranged in the moving groove. The end of the moving plate is connected with an L-shaped sealing plate. The inner wall of the L-shaped sealing plate is in contact with the outer wall of the bottom plate. A moving arc plate is arranged on one side of the fixed arc plate. The moving arc plate is in close fit with the end faces of the fixed arc plate and the top cover. During the movement of the injection pipe, it will drive the sealing component on the filled sample storage tank to perform a sealing operation, and the moving arc plate, the fixed arc plate, and the top cover are in close contact to form a sealed space. The bottom outer wall of the moving arc plate is welded and fixed to the end of the L-shaped sealing plate. Side blocks are welded to the bottom of both outer walls of the moving arc plate. Fixed rods are welded to the side of each of the two side blocks away from the L-shaped sealing plate. A connecting plate is welded to the ends of the two fixed rods. An activity plate is welded to the center of the bottom end of the connecting plate.

[0010] Specifically, in this technical solution, a threaded rod penetrates through the activity plate. One end of the threaded rod is rotationally connected to the outer wall of the bottom plate. The other end of the threaded rod is welded with a shaft rod. The diameter of the shaft rod is larger than that of the threaded rod. The end of the shaft rod is rotationally connected to the outer wall of the partition plate. A driving gear is fixedly sleeved on the outer wall of the shaft rod. The driving gear meshes with the rack arranged in the injection component.

[0011] Specifically, in this technical solution, a positioning block is fixed on the upper surface of the moving plate, a positioning groove is formed at the bottom end of the sample storage tank, and the positioning block is matched with the positioning groove.

[0012] Specifically, in this technical solution, the low-temperature storage component includes a plurality of pump bodies. A plurality of the pump bodies are all located between the fixed arc plate and the storage box. The suction ports of the plurality of pump bodies are all communicated with the inside of the storage box through suction pipes. A discharge pipe penetrates through the outer wall of each fixed arc plate, and each discharge pipe is communicated with the discharge port of the pump body.

[0013] Specifically, in this technical solution, a pressure sensor is embedded in the end face of each fixed arc plate, a controller is fixed on the power box, each pressure sensor is connected to the controller through a wire, and each pump body is connected to the controller through a wire.

[0014] Specifically, in this technical solution, the suction port of the water pump is communicated with a sampling pipe. The sampling pipe penetrates through the bottom of the hull and extends below the water surface, and a filter screen is provided at the end of the sampling pipe.

[0015] Specifically, in this technical solution, a temperature sensor is installed inside each fixed arc plate.

[0016] In summary, the present invention mainly has the following beneficial effects: Through the cooperation of the driving motor and the lead screw, the injection pipe is accurately moved to ensure that the water sample can be injected into the corresponding sample storage tank. And when moving to the next sample storage tank after the injection is completed, the sealed sample storage tank after sampling can be controlled to be sealed through the meshing of the rack and the driving gear, preventing the sample from being affected by the external environment such as dust and gas exchange, 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; During the sealing process, after the pressure sensor detects the pressure caused by the sealing operation, a signal is sent to the controller, and the controller starts the corresponding pump body to suck, and sends the liquid nitrogen in the storage box into the closed spaces of the fixed arc plate and the moving arc plate, ensuring that the sample storage tank can maintain a low temperature state after being sealed, and further improving the stability of the water sample and the accuracy of the monitoring data. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front isometric structural view of the hull of the present invention; Figure 2 is the top view structural view of the hull of the present invention; Figure 3 is the front isometric structural view of the processing mechanism of the present invention; Figure 4 is the exploded structural view of the injection component and the sealing component of the present invention; Figure 5Isometric structural schematic diagram of the injection component of the present invention; Figure 6 Isometric structural schematic diagram of the sealing component of the present invention; Figure 7 Isometric connection schematic diagram of the low-temperature preservation component and the fixed arc plate of the present invention; Figure 8 Oblique isometric connection schematic diagram of the low-temperature preservation component and the fixed arc plate of the present invention; Figure 9 For the present invention Figure 4 Enlarged view of part A in

[0018] Description of the drawings: 1. Hull; 101. Power box; 102. Water pump; 1021. Sampling pipe; 1022. Outlet hose; 2. Partition board; 201. Slide groove; 202. Guide rail; 3. Storage box; 301. Support block; 4. Bottom plate; 401. Moving groove; 402. Fixed arc plate; 4021. Top cover; 5. Processing mechanism; 6. Injection component; 601. Vertical plate; 602. Injection pipe; 603. L-shaped connecting rod; 604. Rack; 6041. Slide plate; 605. Driving motor; 6051. Lead screw; 7. Sealing component; 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 rod; 7071. Driving gear; 8. Low-temperature preservation component; 801. Suction pipe; 802. Discharge pipe; 803. Pump body; 804. Pressure sensor; 9. Sample storage tank. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0020] Next, the embodiments of the present invention will be described according to the overall structure of the present invention.

[0021] In this embodiment, please refer to Figures 1 - 4As shown in the figure, a water quality monitoring device for environmental protection monitoring includes a hull 1 and three sample storage tanks 9. Inside the hull 1, there is a power box 101 which is used to provide power support and is connected to a controller through a wireless transmission module for wireless control. On one side of the hull 1 away from the power box 101, a water pump 102 is installed. The suction port of the water pump 102 is connected to a sampling pipe 1021 which penetrates through the bottom of the hull 1 and extends below the water surface. The end of the sampling pipe 1021 is provided with a filter screen. On one side of the power box 101, there is a bottom plate 4. On the upper surface of the bottom plate 4, three moving grooves 401 are evenly opened. On the bottom plate 4, there is a processing mechanism 5 which is used to seal and store the sample storage tanks 9 at a low temperature. Inside the hull 1, between the water pump 102 and the bottom plate 4, a partition plate 2 is fixed. Between the partition plate 2 and the bottom plate 4, there is a storage tank 3 which stores liquid nitrogen. At the positions of the moving grooves 401 on the upper surface of the bottom plate 4, fixed arc plates 402 are welded. At the top of each fixed arc plate 402, a top cover 4021 is installed by screws. Inside each fixed arc plate 402, a temperature sensor is installed; The processing mechanism 5 is composed of an injection component 6, three sealing components 7 and a low-temperature storage component 8. Each sealing component 7 is arranged on the bottom plate 4 and matches with the fixed arc plate 402. Each sample storage tank 9 is placed in the sealing component 7. The injection component 6 is used to inject the pumped sample into the sample storage tank 9 and seal it through the sealing component 7. The low-temperature storage component 8 is used to cool the sealed sample storage tank 9.

[0022] During environmental protection monitoring, the staff place the hull 1 in the water area to be detected, start the power box 101, and remotely control the movement of the hull 1 in the water area through the controller. After moving to a specific monitoring point, the water pump 102 is started, and the sampling pipe 1021 extracts the water sample. After being filtered by the filter screen, the water sample is transported to the injection pipe 602 of the injection component 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 (the driving motor 605 in the text) of the injection component 6 is started to control the horizontal movement of the injection pipe 602 so that the injection pipe 602 is aligned with the next sample storage tank 9, and the injection process is repeated; During the movement of the injection tube 602, the sealing component 7 on the filled sample storage tank 9 will be driven to perform a sealing operation. The moving arc plate 703, the fixed arc plate 402, and the top cover 4021 are in close contact to form a sealed space, ensuring that the sample is not contaminated by the outside world. After the moving arc plate 703 contacts the fixed arc plate 402, the low-temperature preservation component 8 is activated. The liquid nitrogen in the storage tank 3 is transported into the sealed space, rapidly reducing the temperature of the sample storage tank 9 and maintaining 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 sample is completed, the hull 1 returns to the shore, the injection component 6 resets to cancel the sealing, and the staff takes out the sample storage tanks 9 in sequence for laboratory analysis. After data recording, the sample storage tanks 9 are cleaned and disinfected and then placed back into the sealing component 7 to prepare for the next monitoring task; Thus, the entire operation process is efficient and convenient, which can prevent the sample from being affected by the external environment such as dust and gas exchange, 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. At the same time, the temperature sensor monitors the temperature inside the sample storage tank 9 in real time and feeds it back to the controller through the data transmission module to ensure that the temperature is maintained within the set range and prevent the sample from deteriorating.

[0023] Please refer to Figure 4 、 Figure 5 and Figure 9 As shown, the injection component 6 includes a vertical plate 601 provided at the top of the partition plate 2. An injection tube 602 penetrates through the upper part of the vertical plate 601. The output port of the water pump 102 is connected to the injection tube 602 through a water outlet hose 1022. One side of the top of the partition plate 2 is fixed with a driving motor 605 by screws. The output end of the driving motor 605 is flange-connected with a lead screw 6051. The lead screw 6051 penetrates 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. A rack 604 is fixed to the bottom end of the L-shaped connecting rod 603 by screws. A chute 201 is opened at the bottom of the outer wall of the partition plate 2. A sliding plate 6041 is welded to the outer wall of the rack 604. The sliding plate 6041 is located in the chute 201 and is slidably connected thereto. A guide rail 202 is fixed at the top of the partition plate 2 below the lead screw 6051. The bottom end of the vertical plate 601 is slidably installed on the guide rail 202. A support block 301 is fixed to the top of the storage tank 3 by screws. The outer wall of the injection tube 602 is in contact with the top end of the support block 301 and is slidably connected.

[0024] During sampling, the extracted water sample enters the sample storage tank 9 through the effluent hose 1022 and the injection pipe 602. After the sample storage tank 9 is filled, the drive motor 605 starts, and its output end drives the lead screw 6051 to rotate. The rotating lead 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 aligns with the opening of the next sample storage tank 9. When the L-shaped connecting rod 603 moves, it drives the rack 604 and the slide plate 6041 to move. The slide plate 6041 slides in the chute 201 to ensure the stability of the rack 604. The moving rack 604 controls the operation of the sealing component 7 provided on the filled sample storage tank 9, realizes the function of switching the sample storage tank 9, and seals the filled sample storage tank 9 to ensure sample isolation and prevent cross-contamination.

[0025] Please refer to Figure 3 、 Figure 4 and Figure 6 As shown, each of the sealing components 7 includes a moving plate 701. The moving plate 701 is slidably arranged in the moving groove 401. One end of the moving plate 701 is connected with an L-shaped sealing plate 702. The inner wall of the L-shaped sealing plate 702 is in contact with the outer wall of the bottom plate 4. One side of the fixed arc plate 402 is provided with a moving arc plate 703. The moving arc plate 703 is in close fit with the end faces of the fixed arc plate 402 and the top cover 4021. The outer wall of the bottom of the moving 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 moving arc plate 703 are welded with side blocks 7031. One side of each of the two side blocks 7031 away from the L-shaped sealing plate 702 is welded with a fixed rod 704. The ends of the two fixed rods 704 are welded with a connecting plate 705. 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. 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 that of the threaded rod 706. The end of the shaft rod 707 is rotatably connected to the outer wall of the partition plate 2. A drive gear 7071 is fixedly sleeved on the outer wall of the shaft rod 707. The drive gear 7071 is matched with the rack 604 provided in the injection component 6. A positioning block 7011 is fixed on the upper surface of the moving plate 701. A positioning groove is opened at the bottom end of the sample storage tank 9. The positioning block 7011 is matched with the positioning groove. A weight sensor is further provided in the moving plate 701 to judge whether it is full by measuring the weight change of the sample storage tank 9. When the weight of the sample storage tank 9 reaches the preset value, it is judged to be full.

[0026] When the rack 604 moves, it drives the meshing drive gear 7071 to rotate. 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. The movable plate 7051 drives the connecting plate 705 and the two fixed rods 704 to move. 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. The L-shaped sealing plate 702 also drives the movable plate 701 to slide in the moving groove 401. The movable plate 701 drives the sample storage tank 9 to move. The movable arc plate 703 is in close contact with the fixed arc plate 402, and the L-shaped sealing plate 702 contacts the surface of the bottom plate 4 to seal the moving groove 401, ultimately achieving the sealing and isolation of the sample storage tank 9, ensuring the safety of the sample and avoiding external contamination; When the injection pipe 602 moves above the next sample storage tank 9, at this time, the rack 604 will mesh with the drive gear 7071 of the sample storage tank 9, thereby facilitating the continuous sealing operation after refilling to ensure that each sample storage tank is filled and isolated in sequence.

[0027] Please refer to Figure 3 、 Figure 7 and Figure 8 As shown in, the low-temperature preservation assembly 8 includes a plurality of pump bodies 803. The plurality of pump bodies 803 are all located between the fixed arc plate 402 and the storage tank 3. The suction ports of the plurality of pump bodies 803 are all connected to the inside of the storage tank 3 through the suction pipes 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. 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.

[0028] When the movable arc plate 703 is in contact with the fixed arc plate 402, the pressure sensor 804 will detect the pressure and transmit the data to the controller. After the controller determines the seal according to the data, it starts the pump body 803 to pump out the liquid nitrogen in the storage tank 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 to form a low-temperature environment, ensuring that the sample in the sample storage tank 9 is stored at a low temperature and preventing the sample from deteriorating.

[0029] The working principle of the present invention is: When conducting environmental protection monitoring, the staff place the hull 1 in the water area to be detected, start the power box 101, and remotely control the movement of the hull 1 in the water area through the controller. After moving to a specific monitoring point, the water pump 102 is started, and the sampling pipe 1021 extracts water samples. After being filtered by the filter screen, the extracted water samples enter the sample storage tank 9 through the outlet hose 1022 and the injection pipe 602. After the sample storage tank 9 is filled, the drive motor 605 is started, and its output end drives the lead screw 6051 to rotate. The rotating lead 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 storage tank 9. When the L-shaped connecting rod 603 moves, it will drive the rack 604 and the slide plate 6041 to move. The slide plate 6041 slides in the chute 201 to ensure the stability of the rack 604; The movement of the rack 604 will drive the meshing drive gear 7071 to rotate. The drive gear 7071 drives the shaft rod 707 to rotate, and the shaft rod 707 drives the threaded rod 706 to rotate, thereby pushing the movable plate 7051 to move horizontally. The movable plate 7051 drives the connecting plate 705 and the two fixing rods 704 to move. The two fixing rods 704 push the side block 7031 to move. The side block 7031 drives the movable arc plate 703 and the L-shaped sealing plate 702 to move synchronously. The L-shaped sealing plate 702 also drives the movable plate 701 to slide in the moving groove 401. The movable plate 701 drives the sample storage tank 9 to move. The movable arc plate 703 is in close contact with the fixed arc plate 402, and the L-shaped sealing plate 702 contacts the bottom plate 4 surface to seal the moving groove 401, finally realizing 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 judges the sealing according to the data, it starts the pump body 803, extracts the liquid nitrogen in the storage tank 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 to form a low-temperature environment to ensure that the samples in the sample storage tank 9 are stored at low temperature; When the injection pipe 602 moves above the next sample storage tank 9, the rack 604 will mesh with the drive gear 7071 of this sample storage tank 9, repeating the injection process. After the sampling of the samples at the monitoring point is completed, the hull 1 returns to the shore, the injection assembly 6 is reset to cancel the closure, and the staff take out the sample storage tanks 9 in sequence for laboratory analysis. After the data is recorded, the sample storage tanks 9 are cleaned and disinfected and then re-placed in the sealing and storage assembly 7 to prepare for the next monitoring task.

[0030] Although embodiments of the present invention have been shown and described, the specific embodiments are merely explanations of the present invention and are not limitations thereof. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations that do not make creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A water quality monitoring device for environmental protection monitoring, comprising a hull (1) and three sample storage tanks (9), characterized in that, Inside the hull (1), there is a power box (101). On one side of the hull (1) away from the power box (101), a water pump (102) is installed. On one side of the power box (101), there is a bottom plate (4). On the upper surface of the bottom plate (4), three moving grooves (401) are evenly opened. On the bottom plate (4), there is a processing mechanism (5) which is used to seal and store the sample storage tank (9) at a low temperature. Inside the hull (1), between the water pump (102) and the bottom plate (4), a partition plate (2) is fixed. Between the partition plate (2) and the bottom plate (4), there is a storage tank (3) which stores liquid nitrogen. At the position of the moving groove (401) on the upper surface of the bottom plate (4), fixed arc plates (402) are welded. At the top of each fixed arc plate (402), a top cover (4021) is installed by screws; The processing mechanism (5) consists of an injection component (6), three sealing components (7) and a low-temperature storage component (8). Each sealing component (7) is arranged on the bottom plate (4) and matches with the fixed arc plate (402). Each sample storage tank (9) is placed in the sealing component (7). The injection component (6) is used to inject the pumped sample into the sample storage tank (9) and seal it through the sealing component (7). The low-temperature storage component (8) is used to cool the sealed sample storage tank (9).

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

3. An environmental protection monitoring water quality monitoring device according to claim 2, characterized in that, At the bottom of the outer wall of the partition plate (2), a sliding groove (201) is opened. On the outer wall of the rack (604), a sliding plate (6041) is welded. The sliding plate (6041) is located in the sliding groove (201) and is slidably connected to it. At the top of the partition plate (2) below the lead screw (6051), a guide rail (202) is fixed. The bottom end of the vertical plate (601) is slidably installed on the guide rail (202). At the top of the storage tank (3), a support block (301) is fixed by screws. The outer wall of the injection pipe (602) is in contact with the top of the support block (301) and is slidably connected.

4. The water quality monitoring device for environmental protection monitoring according to claim 1, characterized in that, Each of the sealing components (7) includes a moving plate (701) which is slidably arranged in a moving groove (401). An L-shaped sealing plate (702) is connected to the end of the moving plate (701). The inner wall of the L-shaped sealing plate (702) is in contact with the outer wall of the bottom plate (4). A moving arc plate (703) is arranged on one side of the fixed arc plate (402). The moving arc plate (703) is in close fit with the end faces of the fixed arc plate (402) and the top cover (4021). During the movement of the injection pipe (602), it will drive the sealing component (7) on the filled sample storage tank (9) to perform a sealing operation. The moving arc plate (703), the fixed arc plate (402) and the top cover (4021) are in close contact to form a sealed space; The outer wall of the bottom of the moving arc plate (703) is fixedly welded to the end of the L-shaped sealing plate (702). Side blocks (7031) are welded to the bottom of the outer walls on both sides of the moving arc plate (703). Fixed rods (704) are welded to the side of each of the two side blocks (7031) away from the L-shaped sealing plate (702). A connecting plate (705) is welded to the ends of the two fixed rods (704). An activity plate (7051) is welded to the center of the bottom end of the connecting plate (705).

5. The water quality monitoring device for environmental protection monitoring according to claim 4, wherein, A threaded rod (706) passes through the activity plate (7051). One end of the threaded rod (706) is rotatably connected to the outer wall of the bottom plate (4). A shaft rod (707) is welded to the other end of the threaded rod (706). The diameter of the shaft rod (707) is larger than that of the threaded rod (706). The end of the shaft rod (707) is rotatably connected to the outer wall of the partition plate (2). A driving gear (7071) is fixedly sleeved on the outer wall of the shaft rod (707). The driving gear (7071) meshes with a rack (604) arranged in the injection component (6).

6. The water quality monitoring device for environmental protection monitoring according to claim 4, wherein, A positioning block (7011) is fixed on the upper surface of the moving plate (701). A positioning groove is formed at the bottom end of the sample storage tank (9). The positioning block (7011) matches the positioning groove.

7. 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). A plurality of the pump bodies (803) are all located between the fixed arc plate (402) and the storage tank (3). The suction ports of the plurality of pump bodies (803) are all communicated with the inside of the storage tank (3) through suction pipes (801). A discharge pipe (802) penetrates through the outer wall of each fixed arc plate (402). Each discharge pipe (802) is communicated with the discharge port of the pump body (803).

8. An environmental protection monitoring water quality monitoring device according to claim 7, characterized in that, A pressure sensor (804) is embedded in the end face of each fixed arc plate (402). A controller is fixed on the power box (101). Each pressure sensor (804) is connected to the controller through a wire. Each pump body (803) is connected to the controller through a wire.

9. The water quality monitoring device for environmental protection monitoring according to claim 1, wherein, The suction port of the water pump (102) is communicated with a sampling pipe (1021). The sampling pipe (1021) penetrates through the bottom of the hull (1) and extends below the water surface. A filter screen is arranged at the end of the sampling pipe (1021).

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

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