Underwater sediment sampling device

Abstract

The utility model discloses an underwater sediment sampling device and relates to the technical field of water quality detection. The device comprises a wire storage box, an inner cavity of the wire storage box is movably connected with a take-up roller through a bearing seat, an air pipe is wound on the surface of the take-up roller, and a sampling cylinder is arranged at the other end of the air pipe; a driving assembly is arranged in an inner cavity of the sampling barrel and comprises a sampling roller movably connected to the inner wall of the sampling barrel through a bearing seat and a worm wheel fixedly connected to the surface of the sampling roller. The driving assembly and the air pump inject air into the piston cylinder through the air pipe, the piston plate is pushed to drive the tooth plate to move, the worm and the worm gear are driven to be in transmission, low-speed rotation of the sampling roller is achieved, no underwater electrical element exists, insulation failure is avoided, forward and reverse rotation of the air pump controls advancing and retreating of the sampling roller, and one-key switching of sampling and sample discharging is achieved. And the spiral blade reduces extrusion on the sediment, and meanwhile, the problem of sediment backflow caused by water flow impact in the sampling process can be avoided.

Description

Technical Field

[0001] This utility model belongs to the field of water quality testing technology, and in particular relates to a water bottom sediment sampling device. Background Technology

[0002] Changes in hydrodynamic conditions and the physicochemical properties of water bodies can trigger "secondary pollution" of heavy metals in bottom sediments, posing a significant threat to drinking water sources and human health. Currently, domestic and international research on drinking water sources focuses on water quality, with a lack of research on bottom sediments. Drinking water quality monitoring often employs instantaneous methods, and even with continuous monitoring, there is a long time lag between the release of monitoring results and emergency response, meaning the impact of water quality exceeding standards still exists. Studies have shown that there is a dynamic balance among the heavy metal content of water bodies, suspended particulate matter, and bottom sediments. It is unclear whether heavy metals in bottom sediments will precipitate explosively after this balance is disrupted. Therefore, a bottom sediment sampling device is needed.

[0003] However, existing equipment generally suffers from limitations in its drive mechanism and sample disturbance issues, exhibiting the following drawbacks: Power dependence risk: underwater motors are prone to moisture-induced short circuits, and the insulation failure risk is high in deep-water, high-pressure environments; Severe sample disturbance: the sampling tube is displaced by water flow impact during settling, leading to sampling point deviation. Furthermore, traditional gravity-assisted rod fixing methods are insufficient in depth in soft substrates and are prone to tipping over due to recoil. Therefore, we provide an underwater sediment sampling device to address these problems. Utility Model Content

[0004] The purpose of this invention is to provide a bottom sediment sampling device that solves the problems of low safety and severe sample disturbance in existing bottom sediment sampling devices by cooperating with the driving component and the stabilizing component.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0006] This utility model relates to an underwater sediment sampling device, comprising a cable storage box, a take-up roller movably connected to the inner cavity of the cable storage box via a bearing seat, an air tube wound around the surface of the take-up roller, and a sampling tube disposed at the other end of the air tube; a driving assembly is disposed in the inner cavity of the sampling tube, the driving assembly comprising a sampling roller movably connected to the inner wall of the sampling tube via a bearing seat, a worm gear fixedly connected to the surface of the sampling roller, a worm meshing with the surface of the worm gear, a gear fixedly connected to the surface of the worm, a toothed plate meshing with the surface of the gear, a piston cylinder fixedly connected to the surface of the sampling tube, a piston plate disposed in the inner cavity of the piston cylinder, and a stabilizing assembly disposed on the surface of the sampling tube, the stabilizing assembly comprising a counterweight fixedly connected to the surface of the sampling tube, a fixing ring fixedly connected to the surface of the counterweight, a through hole opened at the top of the fixing ring, and an insert rod disposed in the inner cavity of the through hole.

[0007] The present invention is further configured such that an air pump is fixedly connected to the front of the wire storage box, and the output end of the air pump is connected to the inner cavity of the take-up roller through a pipe.

[0008] The present invention is further configured such that one end of the air pipe is connected to the inner cavity of the take-up roller, the other end of the air pipe is connected to a diverter pipe, both ends of the diverter pipe are connected to an input pipe, and the other end of the input pipe is connected to the bottom of the piston cylinder surface. By setting an air pump, during the start-up process of the air pump, external gas can be injected into the inner cavity of the piston cylinder through the air pipe, the diverter pipe and the input end. The air pressure pushes the piston plate to drive the toothed plate to move, thereby driving the sampling roller to rotate and realize the sampling operation. The diverter pipe realizes the balanced distribution of air pressure and avoids the sampling roller swaying due to insufficient air pressure on one side.

[0009] The present invention is further configured such that there are two toothed plates, two gears, and two piston cylinders, and one side of each toothed plate extends into the inner cavity of the corresponding piston cylinder and is fixedly connected to one side of the piston plate.

[0010] The present invention is further configured such that a protective box is fixedly connected to the top of the sampling tube, and a fixing groove is provided on the top of the protective box. The protective box facilitates the protection of the worm, worm wheel and toothed plate, and avoids impurities in the water from affecting the transmission effect. The fixing groove allows the toothed plate to extend out easily.

[0011] The present invention is further configured such that there are five through holes and five insertion rods. A spring is sleeved on the surface of the insertion rod, and a baffle is fixedly connected to the surface of the insertion rod. One end of the spring is fixedly connected to one side of the baffle, and the other end of the spring is fixedly connected to the surface of the fixing ring. The spring allows the insertion rod to be inserted into the soil at the bottom of the water, thus maintaining the stability of the sampling tube.

[0012] The present invention is further configured such that the bottom of the insertion rod is tapered, and both the insertion rod and the counterweight are coated with waterproof paint. By setting the counterweight, the sampling tube can be vertically submerged at the bottom of the water. By setting the waterproof paint, the service life of the counterweight is improved and it is prevented from rusting.

[0013] The present invention has the following beneficial effects.

[0014] 1. This utility model uses a drive assembly where an air pump injects air into the piston cylinder through an air pipe, pushing the piston plate to move the toothed plate, which in turn drives the worm gear and worm wheel to achieve low-speed rotation of the sampling roller. There are no underwater electrical components, thus avoiding insulation failure. The forward and reverse rotation of the air pump controls the forward and backward movement of the sampling roller. Sampling and discharge can be switched with one button. The spiral blades reduce the compression of sediments and can also avoid sediment backflow caused by water flow impact during sampling.

[0015] 2. This utility model uses a stabilizing component, a counterweight, and a five-point rod anchoring system to work together to make the sampling tube sample vertically. The spring provides continuous downward pressure, and the tapered rod bottom design reduces insertion resistance, thus reducing the resistance to insertion into the sediment at the bottom of the water and increasing the sinking speed.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a three-dimensional diagram of an underwater sediment sampling device.

[0019] Figure 2 This is a cross-sectional view of a wire storage box in an underwater sediment sampling device.

[0020] Figure 3 This is an exploded view of the protective box and sampling tube in an underwater sediment sampling device.

[0021] Figure 4 This is an exploded view of the insertion rod and fixing ring in an underwater sediment sampling device.

[0022] Figure 5 This is a diagram showing the meshing of a worm gear and a worm wheel in an underwater sediment sampling device.

[0023] In the attached diagram: 1. Cable storage box; 2. Take-up roller; 3. Air pipe; 4. Sampling cylinder; 5. Sampling roller; 6. Worm gear; 7. Gear; 8. Toothed plate; 9. Piston cylinder; 10. Piston plate; 11. Counterweight; 12. Fixing ring; 13. Through hole; 14. Insert rod; 15. Air pump; 16. Diverter pipe; 17. Input pipe; 18. Protective box; 19. Fixing groove; 20. Spring; 21. Worm gear. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figures 1-5This utility model is a bottom sediment sampling device, including a cable storage box 1. A take-up roller 2 is movably connected to the inner cavity of the cable storage box 1 through a bearing seat. An air tube 3 is wound on the surface of the take-up roller 2, and a sampling tube 4 is provided at the other end of the air tube 3. A driving assembly is provided in the inner cavity of the sampling tube 4. The driving assembly includes a sampling roller 5 movably connected to the inner wall of the sampling tube 4 through a bearing seat, a worm gear 21 fixedly connected to the surface of the sampling roller 5, a worm 6 meshing with the surface of the worm gear 21, a gear 7 fixedly connected to the surface of the worm 6, a toothed plate 8 meshing with the surface of the gear 7, a piston cylinder 9 fixedly connected to the surface of the sampling tube 4, and a piston plate 10 provided in the inner cavity of the piston cylinder 9. A stabilizing assembly is provided on the surface of the sampling tube 4. The stabilizing assembly includes a counterweight 11 fixedly connected to the surface of the sampling tube 4, a fixing ring 12 fixedly connected to the surface of the counterweight 11, a through hole 13 opened at the top of the fixing ring 12, and an insertion rod 14 provided in the inner cavity of the through hole 13.

[0027] Further details: A handle is fixedly connected to one side of the take-up roller 2, which allows the operator to manually rotate the take-up roller 2 to take in or release the line into the sampling cylinder 4. One end of the sampling roller 5 extends through to the outside of the sampling cylinder 4. The sampling roller 5 has a spiral design, which allows for quick sampling of sediments at the bottom of the water. The piston plate 10 is slidably connected to the inner cavity of the piston cylinder 9. A sealing gasket is provided at the contact point between the piston plate 10 and the piston cylinder 9 to ensure the airtightness of the piston cylinder 9.

[0028] Example 2

[0029] Please see Figures 1-5 Based on Example 1, an air pump 15 is fixedly connected to the front of the wire storage box 1. The output end of the air pump 15 is connected to the inner cavity of the take-up roller 2 through a pipe. One end of the air pipe 3 is connected to the inner cavity of the take-up roller 2, and the other end of the air pipe 3 is connected to a diverter pipe 16. Both ends of the diverter pipe 16 are connected to input pipes 17. The other end of the input pipe 17 is connected to the bottom of the surface of the piston cylinder 9. There are two toothed plates 8, two gears 7, and two piston cylinders 9. One side of each toothed plate 8 penetrates into the inner cavity of the corresponding piston cylinder 9 and is fixedly connected to one side of the piston plate 10. A protective box 18 is fixedly connected to the top of the sampling cylinder 4. A fixing groove 19 is opened on the top of the protective box 18. There are five through holes 13 and five insertion rods 14. A spring 20 is sleeved on the surface of the insertion rod 14. The bottom of the insertion rod 14 is tapered. The surfaces of the insertion rod 14 and the counterweight 11 are coated with waterproof paint.

[0030] Further details: By setting up an air pump 15, during the start-up process, external gas can be injected into the inner cavity of the piston cylinder 9 through the air pipe 3, the diverter pipe 16, and the input end. The air pressure pushes the piston plate 10 to move the toothed plate 8, thereby driving the sampling roller 5 to rotate and realize the sampling operation. Compared with electric drive, it will not produce leakage problems and has high operational stability. With the cooperation of the protective box 18 and the fixing groove 19, the protective box 18 can easily protect the worm 6, worm wheel 21, and toothed plate 8, avoiding the influence of impurities in the water on the transmission effect. The fixing groove 19 can easily extend the toothed plate 8. A baffle is fixedly connected to the surface of the insertion rod 14. One end of the spring 20 is fixedly connected to one side of the baffle, and the other end of the spring 20 is fixedly connected to the surface of the fixing ring 12. The spring 20 can make the insertion rod 14 inserted into the bottom soil and maintain the stability of the sampling cylinder 4. By setting up a counterweight 11, it is ensured that the sampling cylinder 4 can sink vertically to the bottom of the water. By applying waterproof paint, the service life of the counterweight 11 is improved and it is prevented from rusting.

[0031] The working principle of this utility model is as follows: The sampling tube 4 is placed above the water surface of the area to be sampled, and the limiting position of the take-up roller 2 is released. Under the action of gravity, the counterweight 11 drives the sampling tube 4 to sink to the bottom of the water. With the cooperation of the insertion rod 14 and the counterweight 11, the sampling tube 4 is vertically inserted into the soil at the bottom of the water. At this time, the air pump 15 is started by the external controller. The air pump 15 injects external gas into the inner cavity of the piston tube 9 through the air pipe 3, the diverter pipe 16 and the input end. The air pressure pushes the piston plate 10 to drive the toothed plate 8 to move. The toothed plate 8 drives the worm 6 to rotate through the gear 7. The worm 6 drives the sampling roller 5 to rotate through the worm wheel 21, and the sediment is spirally transported to the inner cavity of the sampling tube 4. The spring 20 acts on the insertion rod 14 to ensure the stability of the sampling tube 4 during the sampling process.

[0032] After the sampling is completed, the take-up roller 2 is rotated in the opposite direction by the handle. The take-up roller 2 drives the sampling cylinder 4 to move upward through the air pipe 3, so that it is exposed on the water surface. Then, the air pump 15 is controlled to rotate in the opposite direction by the external controller, and the toothed plate 8 is reset, thereby driving the sampling cylinder 4 to rotate in the opposite direction and discharge the sampled soil. The operation is simple. Compared with electric drive, it will not produce leakage problems and has high operational stability.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bottom sediment sampling device, comprising a cable storage box (1), characterized in that: The inner cavity of the wire storage box (1) is movably connected to the take-up roller (2) through the bearing seat. The surface of the take-up roller (2) is wound with an air tube (3), and the other end of the air tube (3) is provided with a sampling tube (4). The inner cavity of the sampling cylinder (4) is provided with a driving assembly, which includes a sampling roller (5) movably connected to the inner wall of the sampling cylinder (4) through a bearing seat, a worm gear (21) fixedly connected to the surface of the sampling roller (5), a worm (6) meshing with the surface of the worm gear (21), a gear (7) fixedly connected to the surface of the worm (6), a toothed plate (8) meshing with the surface of the gear (7), a piston cylinder (9) fixedly connected to the surface of the sampling cylinder (4), and a piston plate (10) disposed in the inner cavity of the piston cylinder (9). The sampling tube (4) is provided with a stabilizing component, which includes a counterweight (11) fixedly connected to the surface of the sampling tube (4), a fixing ring (12) fixedly connected to the surface of the counterweight (11), a through hole (13) opened at the top of the fixing ring (12), and an insert rod (14) set in the cavity of the through hole (13).

2. The underwater sediment sampling device according to claim 1, characterized in that: The front of the wire storage box (1) is fixedly connected to an air pump (15), and the output end of the air pump (15) is connected to the inner cavity of the take-up roller (2) through a pipe.

3. The underwater sediment sampling device according to claim 1, characterized in that: One end of the air pipe (3) is connected to the inner cavity of the take-up roller (2), and the other end of the air pipe (3) is connected to a diversion pipe (16). Both ends of the diversion pipe (16) are connected to an input pipe (17), and the other end of the input pipe (17) is connected to the bottom of the surface of the piston cylinder (9).

4. The underwater sediment sampling device according to claim 1, characterized in that: The number of toothed plates (8), gears (7) and piston cylinders (9) are all two, and one side of each toothed plate (8) extends into the inner cavity of the corresponding piston cylinder (9) and is fixedly connected to one side of the piston plate (10).

5. The underwater sediment sampling device according to claim 1, characterized in that: The top of the sampling tube (4) is fixedly connected to a protective box (18), and the top of the protective box (18) is provided with a fixing groove (19).

6. The underwater sediment sampling device according to claim 1, characterized in that: The number of through holes (13) and inserts (14) are both five, and a spring (20) is sleeved on the surface of the insert (14).

7. The underwater sediment sampling device according to claim 1, characterized in that: The bottom of the insertion rod (14) is tapered, and both the insertion rod (14) and the counterweight (11) are coated with waterproof paint.

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