Underwater solid sampler

Abstract

The utility model provides an underwater solid sampler which comprises a sampling barrel, a feeding hole for materials to enter is formed in the bottom end of the sampling barrel, and the sampling barrel is rotationally connected with a sealing plate capable of sealing the feeding hole; a center plate is arranged in the feeding port, the sealing plates are located on the two sides of the center plate and make sliding contact with the center plate, and the center plate can drive the sealing plates to rotate, so that the feeding port is sealed. The device is convenient to operate, the overall structure is flexible and reliable, underwater solids can be sampled, the sampling barrel can be automatically plugged after sampling is completed, operation is effectively simplified, and sampling work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of water body sediments, in particular to an underwater solid sampler. Background Art

[0002] In order to study the environmental evolution of the region or even the whole environment, the environmental changes experienced by the water body, and the status of the nutrient elements of the water body pollution, it is necessary to sample, record and analyze the water body sediments. The water body sediments mainly include silt. In order to study the accumulation, distribution, transformation and migration of pollutants discharged into the water body in the silt, it is necessary to collect silt samples.

[0003] The patent with announcement number CN 217586425U discloses a sampling device suitable for sampling silt and silty soil, including an outer cylinder, a cylinder and an inner cylinder are arranged in the inner cavity of the outer cylinder, a cone head that can be opened and closed is arranged at the bottom of the outer cylinder, and an automatic closing structure is arranged between the outer cylinder and the cone plate; the cylinder is fixed to the outer cylinder, the top of the cylinder is connected with a pressure inlet pipe and a pressure relief pipe, a slider is arranged in the cylinder, a connecting rod is fixed at the bottom of the slider, the connecting rod is slidably inserted into the sliding hole arranged in the bottom plate of the cylinder, the bottom end of the connecting rod is connected and fixed to the top of the inner cylinder, and the bottom of the inner cylinder is open. However, the device still has the following problems: the device itself is too complicated, although it can better achieve the blocking of the sampling cylinder, its operation is very cumbersome, and the overall use of the device is inconvenient and not flexible enough, which is not conducive to the frequent sampling work, and the sampling efficiency is low. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned prior art, an underwater solid sampler is provided. The device is easy to operate, and the overall structure is flexible and reliable. It can sample underwater solids, and after the sampling is completed, the sampling tube can be automatically sealed, which effectively simplifies the operation and facilitates the sampling work.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The utility model proposes an underwater solid sampler, comprising a sampling barrel, wherein a feed port for materials to enter is provided at the bottom end of the sampling barrel, and the sampling barrel is rotatably connected to a sealing plate which can close the feed port; a center plate is arranged in the feed port, and the sealing plates are located on both sides of the center plate and in sliding contact with the center plate, and the center plate can drive the sealing plates to rotate, thereby closing the feed port.

[0007] Preferably, a screw rod is fixedly connected to the upper end of the center plate, a nut is provided in cooperation with the screw rod, and the nut is fixedly connected to the sampling tube.

[0008] Preferably, a sampling rod is further included, and the nut and the sampling rod are rotatably connected.

[0009] Preferably, the sampling rod is provided with a through hole through which the lead screw can freely pass.

[0010] Preferably, both ends of the sampling rod are fixedly connected with symmetrically arranged handles.

[0011] Preferably, the upper end of the screw rod is fixedly connected to a guide rod after passing through the through hole, and the guide rod is arranged in a vertical direction and is slidably connected to the handle.

[0012] Preferably, a lifting rod that moves in a vertical direction is slidably connected inside the sampling tube, and a lifting plate that can cooperate with the center plate is fixedly connected to the upper end of the lifting rod.

[0013] Preferably, the lifting plate is located above the center plate, and when the center plate moves upward, the lifting rod can be driven to move upward by the lifting plate.

[0014] Preferably, the sealing plate is fixedly connected with a protrusion at one end close to the lifting rod, the lifting rod is fixedly connected with a wedge block matching with the protrusion, and the sealing plate is inclined in a direction close to the lifting rod.

[0015] Preferably, the sealing plate is provided with a plurality of ratchet grooves, the sampling tube is slidably connected with a pawl cooperating with the ratchet grooves, the pawl is connected to the sampling tube via a spring, and the pawl can limit the sealing plate from rotating outward; a pull rope is connected to the upper end of the pawl, and the pull rope passes through the sampling tube.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model is provided with a rotatable sealing plate, which can realize the sealing of the feed port. As the sampling tube descends, when it comes into contact with the silt, the silt can drive the center plate to rise. When the center plate rises to a certain height, it can drive the lifting rod to rise, and the lifting rod can drive the sealing plate to rotate, so that the two sealing plates move inward to form an angle. At this time, the sampling tube is continuously pressed down to drive the sealing plate to continue to rotate, and the sealing plate can realize the automatic sealing of the feed port. The operation is convenient, and the overall structure is flexible and reliable. It can sample underwater solids, and after the sampling is completed, the sampling tube can be automatically sealed, which effectively simplifies the operation and is conducive to the sampling work.

[0018] 2. The utility model is also provided with a screw rod. When the center plate rises, it can drive the screw rod to rise. Since the screw rod can only rise, it can drive the nut to rotate. The nut can drive the sampling tube to rotate, so that the sampling tube can be rotated downward into the sludge, reducing the downward resistance, thereby facilitating the sampling of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is an overall stereogram of the utility model;

[0021] Figure 2 This is the overall front view of the utility model;

[0022] Figure 3 yes Figure 1 A magnified view of the structure of part A;

[0023] Figure 4 yes Figure 1 Enlarged view of the structure of part K in the middle.

[0024] Description of reference numerals:

[0025] 1 sampling tube; 2 sealing plate; 3 wedge block; 4 protrusion; 5 lifting rod; 6 nut; 7 sampling rod; 8 handle; 9 guide rod; 10 screw rod; 11 center plate; 12 ratchet; 13 spring; 14 ratchet groove; 16 feed port. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] like Figure 1-Figure 4 As shown, this embodiment proposes an underwater solid sampler, including a sampling tube 1. The sampling tube 1 is an open structure at the lower end. Specifically, a feed port 16 is provided at the bottom of the sampling tube 1 for materials to enter. Through the set feed port 16, when the sampling tube 1 is pressed down, silt can enter the sampling tube 1 through the feed port 16 to achieve sampling.

[0028] The sampling tube 1 is rotatably connected to a sealing plate 2 that can close the feed port 16. In the initial state, the sealing plate 2 opens the feed port 16, which will not affect the normal feeding of the sludge. A center plate 11 is arranged in the feed port 16, and the sealing plate 2 is located on both sides of the center plate 11 and is in sliding contact with the center plate 11.

[0029] When the sludge enters from the feed port 16 , the sludge can drive the center plate 11 to rise, and the center plate 11 can drive the sealing plate 2 to rotate, so that the feed port 16 is closed.

[0030] The upper end of the center plate 11 is fixedly connected with a screw rod 10, and the screw rod 10 is matched with a nut 6, and the nut 6 is fixedly connected to the sampling tube 1. When the screw rod 10 moves in the vertical direction, the nut 6 can be driven to rotate, thereby driving the sampling tube 1 to rotate, so that the sampling tube 1 is convenient to rotate downward into the sludge, reducing the downward resistance, thereby facilitating the sampling of the sludge.

[0031] It also includes a sampling rod 7, a nut 6 and the sampling rod 7 are rotatably connected, and both ends of the sampling rod 7 are fixedly connected with symmetrically arranged handles 8, which are convenient for staff to hold. When sampling, the staff holds the two handles 8 with both hands to fix the position of the sampling rod 7.

[0032] The sampling rod 7 is provided with a through hole through which the screw rod 10 can freely pass. The screw rod 10 can freely pass through the through hole and can slide freely in the through hole. After the upper end of the screw rod 10 passes through the through hole, it is fixedly connected with a guide rod 9. The guide rod 9 is arranged in a vertical direction and is slidably connected to the handle 8.

[0033] By setting the guide rod 9, the movement of the screw rod 10 can be limited. Since the guide rod 9 and the handle 8 are slidably connected, when the staff holds the handle 8 to fix the sampling rod 7, the screw rod 10 can only slide in the vertical direction, thereby driving the nut 6 to rotate, and then driving the sampling tube 1 to rotate.

[0034] A lifting rod 5 that moves in the vertical direction is slidably connected inside the sampling tube 1. A lifting plate that can cooperate with the center plate 11 is fixedly connected to the upper end of the lifting rod 5. The lifting plate is located above the center plate 11. When the center plate 11 moves upward, the lifting rod 5 can be driven to move upward through the lifting plate.

[0035] The sealing plate 2 is fixedly connected with a protrusion 4 at one end close to the lifting rod 5, and the lifting rod 5 is fixedly connected with a wedge 3 that cooperates with the protrusion 4. When the lifting rod 5 moves upward, it can drive the wedge 3 to move upward synchronously. The wedge 3 can drive the sealing plate 2 to rotate inward through the protrusion 4 to achieve sealing.

[0036] The sealing plate 2 is inclined toward the direction close to the lifting rod 5, and a gap is left between the lower end of the sealing plate 2 and the lower end of the center plate 10. When sampling, the sludge can enter the gap, thereby facilitating the separation of the center plate 10 and the sealing plate 2, preventing the center plate 10 and the sealing plate 2 from being too tightly fitted under the action of water pressure, facilitating the sludge to enter the feed port 16, and at the same time facilitating the sludge to push the center plate 10 up.

[0037] The sealing plate 2 on the left side is inclined toward the lower left, and the sealing plate 2 on the right side is inclined toward the lower right. Therefore, even if the sampling tube 1 is pressed down, due to the limitation of the inclination direction of the sealing plate 2, the sealing plate 2 will only rotate outward but not inward, so the sealing plate 2 will not be closed, thereby facilitating the entry of sludge.

[0038] The sealing plate 2 is provided with a plurality of ratchet grooves 14, and the sampling tube 1 is slidably connected with a pawl 12 which cooperates with the ratchet groove 14. The pawl 12 is connected to the sampling tube 1 through a spring 13. The upper end of the spring 13 is connected to the sampling tube 1, and the lower end of the spring 13 is connected to the pawl 12. Under the action of the spring 13, the pawl 12 can be pushed into the ratchet groove 14, thereby limiting the rotation of the sealing plate 2.

[0039] The pawl 12 can limit the sealing plate 2 from rotating outward. When the sealing plate 2 rotates inward, the pawl 12 can be driven to slide upward, causing the spring 13 to be compressed repeatedly. The pawl 12 will not limit the inward rotation of the sealing plate 2, and thus will not affect the sealing of the feeding port 16 by the sealing plate 2.

[0040] A pull rope is connected to the upper end of the pawl 12, and the pull rope passes through the sampling tube 1. The pawl 12 can be driven to rise by the pull rope, so that the pawl 12 is disengaged from the ratchet groove 14. At this time, under the action of the weight of the sludge in the sampling tube 1, the sealing plate 2 can be driven to open, or the sealing plate 2 can be assisted to open by pressing down the screw rod 10.

[0041] The specific working process is as follows: when sampling, the staff holds the handle 8 and inserts the sampling tube 1 into the sludge. When the sampling tube 1 contacts the sludge, as the sampling tube 1 continues to be pressed down, the sludge can enter the sampling tube 1 through the feed port 16. The sludge can drive the center plate 11 to rise, and the center plate 11 can drive the screw rod 10 to rise. The screw rod 10 can drive the nut 6 to rotate, and the nut 6 can drive the sampling tube 1 to rotate, so that the sampling tube 1 can be screwed downward into the sludge to facilitate sampling.

[0042] As the sampling work proceeds, when the center plate 11 and the lifting plate come into contact, the center plate 11 drives the lifting rod 5 to rise through the lifting plate, and the lifting rod 5 drives the wedge block 3 to rise. After the wedge block 3 and the protrusion 4 come into contact, the sealing plate 2 can be driven to rotate inward, so that the sealing plate 2 on the left side tilts toward the lower right, and the sealing plate 2 on the right side tilts toward the lower left. The sampling tube 1 continues to be pressed down, and the silt can drive the sealing plate 2 to rotate inward. The sealing plate 2 can achieve the blocking of the feed port 16. Under the action of the ratchet 12, the sealing plate 2 can be limited, and the sealing plate 2 cannot be opened outward at this time.

[0043] When the sealing plate 2 needs to be opened, the ratchet 12 is pulled upward by a pull rope to move the ratchet 12 to the top of the ratchet groove 14. At this time, the sealing plate 2 can be opened by pressing the screw rod 10 downward to realize material discharge.

[0044] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An underwater solid sampler, comprising a sampling tube (1), characterized in that: The bottom end of the sampling tube (1) is provided with a feed port (16) for material to enter, and the sampling tube (1) is rotatably connected to a sealing plate (2) capable of closing the feed port (16); a center plate (11) is arranged inside the feed port (16), and the sealing plates (2) are located on both sides of the center plate (11) and are in sliding contact with the center plate (11); the center plate (11) can drive the sealing plates (2) to rotate, thereby closing the feed port (16).

2. An underwater solid sampler according to claim 1, characterized in that: A screw rod (10) is fixedly connected to the upper end of the central plate (11), and a nut (6) is provided in cooperation with the screw rod (10), and the nut (6) is fixedly connected to the sampling tube (1).

3. An underwater solid sampler according to claim 2, characterized in that: It also includes a sampling rod (7), and the nut (6) and the sampling rod (7) are rotatably connected.

4. An underwater solid sampler according to claim 3, characterized in that: The sampling rod (7) is provided with a through hole through which the screw rod (10) can freely pass.

5. An underwater solid sampler according to claim 4, characterized in that: Both ends of the sampling rod (7) are fixedly connected to symmetrically arranged handles (8).

6. An underwater solid sampler according to claim 5, characterized in that: The upper end of the screw rod (10) passes through the through hole and is fixedly connected to a guide rod (9), wherein the guide rod (9) is arranged in a vertical direction and is slidably connected to the handle (8).

7. An underwater solid sampler according to claim 1, characterized in that: A lifting rod (5) that moves in a vertical direction is slidably connected inside the sampling tube (1), and a lifting plate that can cooperate with the central plate (11) is fixedly connected to the upper end of the lifting rod (5).

8. An underwater solid sampler according to claim 7, characterized in that: The lifting plate is located above the central plate (11), and when the central plate (11) moves upward, the lifting rod (5) can be driven to move upward by the lifting plate.

9. An underwater solid sampler according to claim 8, characterized in that: A protrusion (4) is fixedly connected to one end of the sealing plate (2) close to the lifting rod (5), and a wedge (3) matching the protrusion (4) is fixedly connected to the lifting rod (5). The sealing plate (2) is inclined in a direction close to the lifting rod (5).

10. An underwater solid sampler according to claim 9, characterized in that: The sealing plate (2) is provided with a plurality of ratchet grooves (14), and the sampling tube (1) is slidably connected with a ratchet pawl (12) that cooperates with the ratchet grooves (14). The ratchet pawl (12) is connected to the sampling tube (1) via a spring (13), and the ratchet pawl (12) can limit the sealing plate (2) from rotating outwards; a pull rope is connected to the upper end of the ratchet pawl (12), and the pull rope passes through the sampling tube (1).

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