A seawater new pollutant detection sampling and preservation device

Abstract

The application discloses a seawater new pollutant detection sampling and storage device and belongs to the technical field of sampling equipment. The device is aimed at solving the problems of easy pollution of separation of sampling and storage, high driving cost of multi-depth sampling of existing devices. The technical scheme points: including a main frame cylinder, four fixed frames with arc-shaped frames are fixedly arranged on the outer wall of the main frame cylinder, and four storage cylinders are arranged in the main frame cylinder; the storage cylinder is provided with a cover composed of a top cover, a bottom cover and a connecting rod; the main frame cylinder is provided with four groups of sliding rods, the sliding rods are provided with arc-shaped seats with compression springs I, the inner wall of the arc-shaped seat is provided with a spiral arc-shaped guide groove, a guide rod is fixedly arranged on the rotating shaft in the main frame cylinder and is matched with the arc-shaped guide groove; a pressing plate is arranged above the top cover and is connected with the arc-shaped seat through a connecting frame rod, and the device further comprises a locking mechanism. The improvement lies in that the storage cylinder is integrated with sampling and storage, the guide rod is rotated to drive the arc-shaped seat to move downwards to seal the pressing plate, single driving can sequentially trigger multi-depth sampling, the locking mechanism realizes automatic sealing and convenient unlocking, and the device is mainly used for multi-depth detection sampling of seawater new pollutants.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, and in particular to a device for detecting, sampling and preserving new pollutants in seawater. Background Technology

[0002] New pollutants in seawater, such as trace amounts of antibiotics, endocrine disruptors, and novel flame retardants, are characterized by low concentrations, high toxicity, and easy accumulation. This necessitates strict requirements for sample quality during the testing process, and there are areas for improvement in the use of existing seawater sampling devices. In most devices, the sampling chamber and storage tank are separate. After sampling, the seawater needs to be transferred to a special storage container. During this transfer process, the seawater is prone to contact with air, contamination with pollutants on the inner wall of the container, or spillage, which leads to distortion of the concentration of new pollutants. This has a particularly significant impact on the detection results of trace pollutants. In addition, if seawater samples from different depths are to be obtained simultaneously, the common multi-channel structure needs to be equipped with corresponding drive components for each channel, which increases the overall cost of the equipment.

[0003] To address the aforementioned issues, a device for detecting, sampling, and preserving new seawater pollutants was designed that can acquire samples from multiple depths in a single sampling process and eliminates the need for transfer after sampling. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the ease of contamination due to the separation of sampling and preservation, and the high cost of multi-depth sampling. This invention proposes a new seawater pollutant detection, sampling, and preservation device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A device for detecting, sampling and preserving new pollutants in seawater includes a main frame cylinder with four fixed frames equidistantly fixed to its outer wall, and an arc-shaped frame rotatably connected to one end of each fixed frame. Four storage cylinders are installed in the fixing frame and held in place by the arc-shaped frame; Four sets of caps are installed inside the corresponding storage cylinders. Each set includes a top cap, a bottom cap, and a connecting rod that connects the two. Four arc-shaped seats can form a ring. Four sets of sliding rods are fixed inside the main frame. The arc-shaped seats are slidably sleeved on the outside of the sliding rods. The sliding rods are fitted with compression springs I. The two ends of compression springs I abut against the bottom of the arc-shaped seats and the protrusions of the sliding rods. A rotating shaft is installed inside the main frame tube, and a guide rod is fixed on its outer wall. The round end of the guide rod is engaged with the spiral arc-shaped guide groove on the inner wall of the arc-shaped seat. Four pressing plates are located above the top cover, and a connecting frame rod is fixed on the top of them. The connecting frame rod passes through the main frame tube and is fixed to the arc-shaped seat. When the guide rod rotates, it moves along the arc-shaped guide groove, causing the arc-shaped seat to move downward. Through the connecting frame rod, it drives the pressing plate to press down the top cover, so that the storage cylinder can be sealed for sampling.

[0006] In one possible design, multiple counterweights are fixed at the bottom of the main frame cylinder to ensure that the device sinks vertically.

[0007] In one possible design, a limiting ring is fixedly sleeved on the outer wall of the storage cylinder, and the limiting ring fits and cooperates with the fixing frame and the arc frame to limit the axial movement of the storage cylinder.

[0008] In one possible design, the rotating shaft is driven by a motor, and a battery is installed inside the main frame cylinder. The motor is electrically connected to the battery and remotely controlled. The motor drives the rotating shaft to rotate 90 degrees at a time to trigger sampling.

[0009] In one possible design, a locking mechanism is also included, which includes a side seat fixed to the bottom of the storage cylinder, an insert plate slidably disposed within the side seat, and the insert plate being reset by a compression spring II. A connecting seat is fixed at the bottom of the bottom cover, and an arc-shaped slot is opened on its outer wall. One end of the insert plate passes through the side seat and is inserted into the arc-shaped slot. The top of the insert plate is sloping, which makes it easy to squeeze the insert plate to shrink when the bottom cover is pressed down.

[0010] In one possible design, the inner wall of the bottom of the arc-shaped slot has a groove, and a hollow frustum-shaped seat is slidably disposed in the groove. A tension spring is disposed between the bottom of the frustum-shaped seat and the groove. A handle is provided below the connector, and the end of the handle passes through the connector and is fixed to the frustum-shaped seat. Pressing the handle can push the insert plate out of the arc-shaped slot.

[0011] In this application, during actual use, the operator uses a hook to connect to the top of the main frame and moves the top cover upward to open the storage cylinder. The device is then placed in the sea with the bottom facing down, and the top cover is buoyed to keep the storage cylinder open. When the rope is lowered to the designated depth, the motor drives the rotating shaft to rotate, causing the guide rod to rotate 90 degrees. As the guide rod rotates, its end moves along the arc-shaped guide groove, which in turn moves the arc-shaped seat downward. The arc-shaped seat then moves the pressing plate downward through the connecting frame rod. The pressing plate presses the top cover downward, thereby sealing the storage cylinder and preserving and sampling seawater at this depth. When the bottom cover moves to the end, the connecting seat at the bottom will touch the inclined surface at the top of the insert plate, thereby squeezing the insert plate into the inside of the side seat. After the bottom cover moves to the end, the insert plate is reset by the compression spring II, so that it is inserted into the inside of the arc-shaped slot, thereby fixing the bottom cover and sealing the storage cylinder. When the guide rod rotates and its end moves to the end of the arc-shaped guide groove, the end of the arc-shaped guide groove on its inner wall will connect with the beginning of the arc-shaped guide groove on the inner wall of the next arc-shaped seat. When the guide rod continues to rotate 90 degrees, it will enter the beginning of the next arc-shaped guide groove, and the previous arc-shaped seat will be reset upward by the compression spring I, completing the sampling and collection process of a single storage cylinder. Then, seawater from different depth areas can be collected sequentially using this method. After sampling, retrieve the rope to retrieve the device. After retrieval, unscrew the bolts that fix the arc frame and the fixed frame, and rotate the arc frame to open and remove the storage cylinder. At this time, the storage cylinder can be used directly as a storage container without opening it and pouring it into other storage containers to avoid spillage and contamination. When storing the storage cylinder, pour it into the storage container. When you need to remove the seawater from the storage container, invert the container and then manually press the handle to move the frustum-shaped base inward. The frustum-shaped base, through the conical slope of its outer wall, pushes the insert plate to move, thus disengaging it from the interior of the arc-shaped slot. Continue pressing the handle to move the connecting seat through the frustum-shaped base, which in turn moves the bottom and top covers to open the storage container, allowing you to pour out the seawater.

[0012] In this utility model, the seawater new pollutant detection sampling and preservation device integrates sampling and preservation, enabling direct sealing and preservation after sampling. After recovery, there is no need to transfer the sample to other containers, avoiding air contact, container contamination or spillage during the transfer process, and ensuring the authenticity of the test results. In this utility model, the seawater new pollutant detection, sampling and storage device can automatically fix the storage cylinder when it is closed through a locking mechanism, thereby achieving underwater sealing and preventing sample leakage. Unlocking can be completed by simply pressing the handle manually. In this invention, four independent storage cylinders and sequentially triggered drive mechanisms enable the acquisition of four seawater samples at different depths in a single descent, eliminating the need for multiple descents. Furthermore, the samples do not need to be transferred to other containers after retrieval, thus preventing issues such as contact with external air or leakage, and ensuring the authenticity of the test results. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a new seawater pollutant detection, sampling and preservation device proposed in this utility model; Figure 2 This is a bottom view of the structure of a new seawater pollutant detection, sampling and preservation device proposed in this utility model; Figure 3 This is an exploded structural diagram of the storage cylinder of a new seawater pollutant detection, sampling and preservation device proposed in this utility model. Figure 4 This is an exploded structural diagram of the main frame of a new seawater pollutant detection, sampling and preservation device proposed in this utility model. Figure 5 This is an exploded structural diagram of the locking mechanism of a new seawater pollutant detection, sampling and preservation device proposed in this utility model.

[0014] In the diagram: 1. Main frame cylinder; 2. Storage cylinder; 3. Counterweight; 4. Fixing frame; 5. Arc-shaped frame; 6. Limiting ring; 7. Top cover; 8. Connecting rod; 9. Bottom cover; 10. Pressing plate; 11. Connecting frame rod; 12. Arc-shaped seat; 13. Arc-shaped guide groove; 14. Guide rod; 15. Rotating shaft; 16. Slide rod; 17. Compression spring I; 18. Side seat; 19. Insert plate; 20. Connecting seat; 21. Arc-shaped slot; 22. Frustum-shaped seat; 23. Handle; 24. Tension spring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] In one embodiment: Reference Figure 1-2 A sampling and preservation device includes: a main frame cylinder 1, made of 316L stainless steel, with four fixed frames 4 welded and fixed at equal intervals along the circumference of its outer wall. Each fixed frame 4 is an arc-shaped structure used to support the storage cylinder 2. One end of the fixed frame 4 is rotatably connected to an arc-shaped frame 5. The free end of the arc-shaped frame 5 is locked to the fixed frame 4 by bolts to clamp and fix the storage cylinder 2. Multiple counterweights 3 are welded to the bottom of the main frame cylinder 1. The number and weight of these counterweights can be adjusted according to the density of seawater to ensure that the device sinks vertically when lowered.

[0017] refer to Figure 3 There are four storage cylinders 2, which are placed in four fixed frames 4 respectively. A limit ring 6 is fixedly installed on the outer wall of the storage cylinder 2. When the storage cylinder 2 is placed in the fixed frame 4, the limit ring 6 fits into the fixed frame 4 to limit it.

[0018] Each set of caps corresponds to a storage cylinder 2 and is located inside the storage cylinder 2. It includes a top cap 7, a bottom cap 9, and a connecting rod 8. The surfaces of the top cap 7 and the bottom cap 9 are covered with fluororubber to ensure sealing. The two ends of the connecting rod 8 are fixedly connected to the center of the top cap 7 and the center of the bottom cap 9, respectively, making them an integral structure. The rod 8 slides axially through the bracket inside the storage cylinder 2 to open and close the storage cylinder 2. The bottom of the inner wall of the storage cylinder 2 is set with a circular boss to fit and seal with the bottom cap 9. This ensures that when the bottom cap 9 is open, the storage cylinder 2 is in a continuous connected state, ensuring that the cylinder contains seawater at the corresponding position.

[0019] refer to Figure 5 The locking mechanism is used to fix the bottom cover 9 after the storage cylinder 2 is sealed, to prevent the bottom cover 9 from loosening and causing sample leakage after sampling. Specifically, it includes a side seat 18, an insert plate 19, a compression spring II, a connecting seat 20, and an unlocking component. The side seat 18 is fixed to the bottom outer wall of the storage cylinder 2. A horizontal sliding hole is opened inside the side seat 18. The insert plate 19 is slidably disposed in the sliding hole. One end of the insert plate 19 extends out of the side seat 18, and the other end is connected to the inner wall of the sliding hole through the compression spring II. The top of the insert plate 19 is processed into a slope to facilitate the compression of the insert plate 19 to retract when the bottom cover 9 is lowered. The connecting seat 20 is circular and fixed at the bottom center of the bottom cover 9. The outer wall of the connecting seat 20 is provided with an annular arc slot 21. The position of the arc slot 21 corresponds to the protruding end of the insert plate 19. When the bottom cover 9 is lowered to the bottom of the storage cylinder 2, the protruding end of the insert plate 19 can be inserted into the arc slot 21 to lock the bottom cover 9. The unlocking assembly includes a frustum-shaped base 22, a tension spring 24, and a handle 23. The bottom inner wall of the arc-shaped slot 21 has an annular groove. The frustum-shaped base 22 is a hollow structure and is slidably disposed in the groove. A tension spring 24 connects the bottom of the frustum-shaped base 22 to the bottom inner wall of the groove. The handle 23 is located on the outside, and its end passes through the bottom of the connecting seat 20 and is fixed to the bottom of the frustum-shaped base 22, which facilitates manual pressing operation.

[0020] refer to Figure 4 The main frame cylinder 1 has four sets of sliding rods 16 welded and fixed inside along the circumference. Each set of sliding rods 16 includes two parallel stainless steel rods to ensure the stability of the arc-shaped seat 12. The four sets of sliding rods 16 correspond to the four storage cylinders 2 respectively. An arc-shaped seat 12 is slidably sleeved on the outer wall of each set of sliding rods 16. The inner arc surfaces of the four arc-shaped seats 12 are opposite each other and form a complete ring under normal conditions.

[0021] Each slide rod 16 has an integrally formed annular boss on its outer wall near the bottom. A compression spring I 17 is sleeved on the outer wall of the slide rod 16. The two ends of the compression spring I 17 are connected to the bottom of the arc-shaped seat 12 and the boss of the slide rod 16, respectively.

[0022] The inner wall of the arc-shaped seat 12 is machined with a spiral arc-shaped guide groove 13. The main frame cylinder 1 is rotatably connected to the center of the interior via a bearing. A guide rod 14 is welded and fixed to the outer wall of the shaft 15. The free end of the guide rod 14 is machined into a round end to reduce friction with the arc-shaped guide groove 13 and avoid jamming. The round end is embedded in the arc-shaped guide groove 13 to form a sliding fit.

[0023] The pressing plate 10 is a circular metal plate, and there are four of them. They are located directly above the four top covers 7. Each pressing plate 10 has a connecting rod 11 fixed at the top center. The other end of the rod slides through the side wall of the main frame cylinder 1, and a waterproof sealing ring is provided at the penetration point to prevent seawater from entering the interior of the main frame cylinder 1. The rod is fixed to the outer wall of the corresponding arc-shaped seat 12.

[0024] The main frame tube 1 is equipped with batteries and can be equipped with a separate sealed battery compartment. The main frame tube 1 is also equipped with a geared motor, which is connected to the rotating shaft 15 through a coupling. By installing a PLC, it is electrically connected to the motor and the battery, so that the operator can remotely control the device on the ship or shore using a control terminal (such as a laptop computer with dedicated control software installed) via VPN or other means. When the device descends to the specified depth, it drives the motor to rotate, which in turn rotates the rotating shaft 15 and the guide rod 14, rotating 90 degrees at a time.

[0025] Before sampling, the operator first places the four storage cylinders 2 into the four fixed frames 4 respectively, then rotates the arc frame 5 and locks the arc frame 5 to the fixed frame 4 with bolts to fix the storage cylinders 2. Then, the top cover 7 is moved upward to open the storage cylinders 2 so that seawater can enter. Finally, the hook on the top of the device is connected to the rope on the ship and lowered.

[0026] During the device lowering and initial state, the operator lowers the rope using a winch or other means. The device sinks vertically under the gravity of the counterweight 3. Due to the buoyancy of the seawater, the top cover 7 is always raised during the lowering process. The top and bottom of the storage cylinder 2 are both open, allowing seawater to freely enter and exit the storage cylinder 2, ensuring that the seawater sampled is from the target depth.

[0027] When the device reaches the designated depth, the operator remotely drives the motor to rotate, causing the rotating shaft 15 and guide rod 14 to rotate 90 degrees. The round end of the guide rod 14 slides along the arc-shaped guide groove 13. Since the arc-shaped guide groove 13 is spiral, the rotation of the guide rod 14 is converted into a downward pushing force on the arc-shaped seat 12, overcoming the elastic force of the compression spring I 17, and pushing the arc-shaped seat 12 to slide downward along the slide rod 16. The arc-shaped seat 12 drives the pressing plate 10 to move downward through the connecting frame rod 11. The pressing plate 10 presses the top cover 7, pushing the top cover. 7. The connecting rod 8 and the bottom cover 9 slide downward along the axial direction of the storage cylinder 2. When the bottom cover 9 descends to the bottom of the storage cylinder 2, the outer wall of the connecting seat 20 contacts the inclined surface of the insert plate 19, squeezing the insert plate 19 to retract into the side seat 18 (compressing the compression spring II). When the bottom cover 9 is completely in contact with the bottom of the storage cylinder 2, the arc-shaped slot 21 is aligned with the insert plate 19, the compression spring II is reset, and the insert plate 19 is pushed out and inserted into the arc-shaped slot 21, completing the locking of the bottom cover 9. At this time, the storage cylinder 2 is completely sealed, and the seawater sample collection at the corresponding depth is completed.

[0028] When the guide rod 14 rotates 90 degrees and its round end moves to the end of the arc-shaped guide groove 13 of the first arc-shaped seat 12, the end of the arc-shaped guide groove 13 is aligned with the beginning of the arc-shaped guide groove 13 of the second arc-shaped seat 12, so that when the guide rod 14 rotates 90 degrees, its round end can enter the arc-shaped guide groove 13 of the second arc-shaped seat 12. By repeating the above method, seawater sampling at four different depths can be completed in sequence.

[0029] The operator uses a winch to retrieve the rope and pull the device back to the ship. After retrieval, the bolts connecting the arc frame 5 and the fixed frame 4 are unscrewed, the arc frame 5 is rotated to open the fixed frame 4, and the storage cylinder 2 is taken out from the fixed frame 4. The storage cylinder 2 can be used directly as a sample storage container. After attaching a depth label, it can be transported to the laboratory without transferring the sample, thus avoiding contamination. When the laboratory needs to test samples, the storage cylinder 2 is inverted, and the handle 23 is pressed manually to move the frustum-shaped seat 22. The conical outer wall of the frustum-shaped seat 22 presses against the bottom of the insert plate 19, pushing the insert plate 19 to retract into the side seat 18 and disengage from the arc-shaped slot 21. Then, the handle 23 is pressed again, and the frustum-shaped seat 22 pushes the connecting seat 20 to move, which in turn causes the bottom cover 9, connecting rod 8 and top cover 7 to slide, thereby opening the storage cylinder 2. At this time, the seawater sample can be poured into the testing container to complete the test.

[0030] This application can be used in the field of sampling equipment, or in other fields applicable to this application.

[0031] In another embodiment: a new seawater pollutant detection, sampling and preservation device, which is applied to the field of sampling equipment, wherein the arc frame 5 and the fixed frame 4 can be fixed by means of buckles, so as to facilitate its quick operation.

[0032] Rubber sealing rings can be individually installed at the penetration points of the connecting rod 11 and other components to ensure the airtightness of the device.

[0033] However, as is well known to those skilled in the art, the working principles and wiring methods of motors and PLCs are conventional or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0034] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for detecting, sampling, and preserving new pollutants in seawater, characterized in that, include: The main frame tube (1) has four fixed frames (4) fixed at equal intervals on its outer wall, and one end of the fixed frame (4) is rotatably connected to the arc frame (5). Four storage cylinders (2) are respectively installed in the fixing frame (4) and clamped and fixed by the arc frame (5); Four sets of caps are installed inside the storage cylinder (2), each set including a top cap (7), a bottom cap (9) and a connecting rod (8) connecting the two. Four arc-shaped seats (12) can form a ring. Four sets of sliding rods (16) are fixed inside the main frame tube (1). The arc-shaped seats (12) are slidably sleeved on the outside of the sliding rods (16). The sliding rods (16) are sleeved with compression springs I (17). The two ends of the compression springs I (17) abut against the bottom of the arc-shaped seats (12) and the protrusions of the sliding rods (16). The main frame tube (1) is equipped with a rotating shaft (15) for rotation, and a guide rod (14) is fixed on its outer wall. The round end of the guide rod (14) is engaged with the spiral arc guide groove (13) on the inner wall of the arc-shaped seat (12). Four pressing plates (10) are located above the top cover (7), and a connecting rod (11) is fixed on the top of the plate. The connecting rod (11) passes through the main frame tube (1) and is fixed to the arc-shaped seat (12). When the guide rod (14) rotates, it moves along the arc-shaped guide groove (13), which drives the arc-shaped seat (12) to move down. Through the connecting frame rod (11), it drives the pressing plate (10) to press down the top cover (7), so that the storage cylinder (2) can be sealed and sampled.

2. The seawater new pollutant detection, sampling, and preservation device according to claim 1, characterized in that, Multiple counterweights (3) are fixed at the bottom of the main frame tube (1) to ensure that the device sinks vertically.

3. The seawater new pollutant detection, sampling, and preservation device according to claim 2, characterized in that, A limiting ring (6) is fixedly sleeved on the outer wall of the storage cylinder (2). The limiting ring (6) fits and cooperates with the fixing frame (4) and the arc frame (5) to limit the axial movement of the storage cylinder (2).

4. The seawater new pollutant detection, sampling, and preservation device according to claim 3, characterized in that, The rotating shaft (15) is driven by a motor.

5. The seawater new pollutant detection, sampling, and preservation device according to claim 4, characterized in that, It also includes a locking mechanism, which includes a side seat (18) fixed to the bottom of the storage cylinder (2), and an insert plate (19) slidably disposed in the side seat (18). The insert plate (19) is reset by a compression spring II. The bottom cover (9) is fixed with a connecting seat (20), and its outer wall has an arc-shaped slot (21). One end of the insert plate (19) passes through the side seat (18) and is inserted into the arc-shaped slot (21). The top of the insert plate (19) is sloping, which makes it easy for the bottom cover (9) to press down and squeeze the insert plate (19) to shrink.

6. The seawater new pollutant detection, sampling, and preservation device according to claim 5, characterized in that, The bottom inner wall of the arc-shaped slot (21) has a groove, and a hollow frustum-shaped seat (22) is slidably arranged in the groove. A tension spring (24) is provided between the bottom of the frustum-shaped seat (22) and the groove. A handle (23) is provided below the connector (20). The end of the handle (23) passes through the connector (20) and is fixedly connected to the frustum-shaped seat (22). Pressing the handle (23) can push the insert plate (19) out of the arc-shaped slot (21).

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