Deepwater sediment sampler

Abstract

The utility model relates to a deepwater sediment sampler which comprises a bracket, an inhaul cable and a plurality of sampling units, the support does not comprise a cylindrical balance weight body and a supporting rod, the supporting rod is detachably connected to the bottom of the side face of the balance weight body, the sampling unit is connected with the supporting rod, and the inhaul cable is connected with the top of the balance weight body; the center axis of the sampling unit is parallel to the center axis of the counterweight body, the sampling port faces downwards, and the sampling unit is distributed in a central symmetry mode. According to the utility model, two, three, four and six parallel samples can be collected in one sampling operation, and compared with a sampling device in the prior art, the sampling difficulty is greatly reduced. Due to the gravity guarantee of the counterweight body and the arrangement of the centrosymmetric supporting rods, the deepwater sediment sampler vertically sinks in water, angle deflection does not occur, and unsuccessful sampling caused by the fact that the sampling port of the sampling unit is not vertically inserted into sediment is prevented. In order to avoid sampling failure, in a preferable embodiment of the utility model, a sampling unit with a manual locking mechanism in the prior art is adopted, and a locking triggering mechanism is arranged in the bracket and the inhaul cable to lock the triggering sampling unit.

Description

Technical Field

[0001] The utility model belongs to the field of water environment protection, and more particularly relates to a deep-water sediment sampler. Background Art

[0002] Deepwater sediment sampling is one of the important links in water environment survey. There are many deepwater sediment samplers. Among them, columnar samplers are widely used because they cause minimal disturbance to water bodies and bottom mud.

[0003] However, the existing deep-water columnar sampler can only collect one sediment sample at a time, and the caliber cannot be too large. Therefore, when conducting water environment surveys, it is often necessary to collect multiple sediment samples in the same place so that the test results obtained are more statistically significant. With the existing columnar sampler, multiple sampling operations are required to complete the sampling task of a sampling site, which is time-consuming and laborious.

[0004] Therefore, a new columnar sediment sampler is needed. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a deep-water sediment sampler, comprising a bracket, a cable and a plurality of sampling units;

[0006] The bracket does not include a cylindrical counterweight body and a supporting rod, the supporting rod is detachably connected to the bottom of the side of the counterweight body, the sampling unit is connected to the supporting rod, and the cable is connected to the top of the counterweight body;

[0007] The central axis of the sampling unit is parallel to the central axis of the counterweight body, the sampling port faces downward, and the sampling units are centrally symmetrically distributed.

[0008] In a specific embodiment, a plurality of supporting rod connection holes are provided at the bottom of the side surface of the counterweight body, and the supporting rods are detachably connected to the supporting rod connection holes;

[0009] The support rod is provided with a sampling unit interface, and the sampling unit is detachably connected to the sampling unit interface via a connecting portion at the top.

[0010] In a specific embodiment, the central axis of the counterweight body is provided with a central cavity, the support rod connection hole has a connection hole cavity, the top of the central cavity is open, and the bottom is connected to the support rod connection hole cavity;

[0011] The cable is connected to the top of the counterweight body and blocks the top opening of the central cavity. A pulling line is arranged inside the cable and runs through the entire cable.

[0012] A lifting rod is arranged inside the central cavity, the top of the lifting rod is connected to the lifting wire, and a plurality of cross bar joints are arranged at the bottom of the lifting rod, facing the directions of the plurality of support rod connection holes respectively;

[0013] A supporting rod cavity is provided in the middle of the supporting rod, the supporting rod cavity is communicated with the central cavity, one end of the cross bar is detachably connected to the cross bar joint, passes through the connecting hole cavity and the supporting rod cavity, and the other end is arranged at the sampling unit interface;

[0014] The sampling unit is provided with a locking mechanism capable of closing the sampling port, a locking mechanism pull rod is provided in the connecting portion, a clamping portion is provided at the top of the locking mechanism pull rod, and the clamping portion is detachably connected to the cross bar.

[0015] In a specific embodiment, the number of the support rod connection holes is 6.

[0016] In a specific embodiment, a locking buckle is arranged on the pull cable at a certain interval, and each of the locking buckles is connected to the pulling line.

[0017] The utility model can realize the collection of 2, 3, 4 and 6 parallel samples in one sampling operation, which greatly reduces the sampling difficulty compared with the sampling device in the prior art. Due to the gravity guarantee of the counterweight body and the central symmetrical support rod setting, the deep-water sediment sampler sinks vertically in the water without angular deflection, preventing the sampling unit from failing to be sampled due to the sampling port failing to be vertically inserted into the bottom mud.

[0018] In order to avoid sampling failure, in a preferred embodiment of the present invention, a sampling unit with a manual locking mechanism in the prior art is adopted, and a locking trigger mechanism is provided in the bracket and the cable to achieve locking of the triggered sampling unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the deep-water sediment sampler of Example 1.

[0020] Figure 2 A cross-sectional view of the counterweight body of Example 1.

[0021] Figure 3 Schematic diagram of the deep-water sediment sampler of Example 2.

[0022] Figure 4 This is a longitudinal cross-sectional view of the counterweight body of Example 2.

[0023] Figure 5 A cross-sectional view of the counterweight body of Example 2.

[0024] Figure 6Schematic diagram of the connection structure between the sampling unit and the support rod in Example 2.

[0025] In the accompanying drawings, the components represented by the numbers are as follows: 11. counterweight body, 111. central cavity, 12. support rod, 121. support rod cavity, 13. support rod connecting hole, 14. lifting rod, 141. cross rod joint, 15. cross rod, 2. sampling unit, 21. connecting part, 22. locking mechanism pull rod, 221. clamping part, 3. pull rope, 31. lifting line. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] Example 1

[0028] like Figure 1 and 2 As shown, the deep-water sediment sampler of this embodiment includes a bracket, a sampling unit 2 and a cable 3. The bracket includes a cylindrical counterweight body 11 and a support rod 12. Six support rod connecting holes 13 are provided at the bottom of the side of the counterweight body 11, and the support rod 12 is assembled to the counterweight body 11 by inserting into the support rod connecting holes 13. The six support rod connecting holes 13 are evenly arranged at the same height at the bottom of the side of the counterweight body 11. A sampling unit interface 122 is provided on the support rod 12, and the sampling unit 2 is detachably connected to the sampling unit interface 122 on the support rod 12 through a connecting portion 21. The cable 3 is connected to the top of the counterweight body 11. The central axis of the sampling unit 2 remains parallel to the central axis of the counterweight body 11.

[0029] During sampling, 2, 3, 4 or 6 support rods 12 are centrally symmetrically assembled on the counterweight body 11 as needed, and the sampling unit 2 is assembled on the support rod 12, and then the deep-water sediment sampler is thrown downward at the target position with the sampling unit 2 in a vertically downward posture. After the sampling port of the sampling unit is inserted into the bottom mud, the sampling unit automatically closes the sampling port in a negative pressure manner or in a barrier manner after hitting the bottom of the water. Then the sampler is pulled up by the cable 3, and the collection of 2, 3, 4 and 6 parallel samples is completed in one sampling operation, which greatly reduces the sampling difficulty compared with the sampling device in the prior art. Due to the gravity guarantee of the counterweight body and the centrally symmetrical support rod setting, the deep-water sediment sampler sinks vertically in the water without angular deflection, which prevents the sampling unit 2 from failing to vertically insert the sampling port into the bottom mud.

[0030] The sampling unit 2 used in this embodiment must be an impact-sealed sampler, that is, the sampler automatically closes the sampling port after being inserted into the sampling position to prevent the collected sediment sample from leaking.

[0031] Example 2

[0032] like Figure 3-6 As shown, the deep-water sediment sampler of this embodiment is improved as follows based on Embodiment 1.

[0033] The central axis of the counterweight body 11 is provided with a central cavity 111, and there is a connection hole cavity in the support rod connection hole 13. The top of the central cavity 111 is open, and the bottom is connected to the support rod connection hole cavity. The cable 3 is connected to the top of the counterweight body 11 and blocks the top opening of the central cavity 111. A lifting wire 31 is provided inside the cable 3 and runs through the entire cable 3. A lifting rod 14 is provided inside the central cavity 111, and the top of the lifting rod 14 is connected to the lifting wire 31. Six cross bar joints 141 are provided at the bottom of the lifting rod, facing the directions of the six support rod connection holes 13 respectively.

[0034] The support rod 12 has a support rod cavity 121 in the middle, and after being assembled to the support rod connecting hole 13, the support rod cavity 121 is connected to the central cavity 111. One end of the cross bar 15 is detachably connected to the cross bar joint 141, passing through the connecting hole cavity and the support rod cavity 121, and the other end is arranged at the sampling unit interface 122. The connecting hole cavity and the support rod cavity are arranged at a certain height, so that the cross bar 15 can move up and down therein.

[0035] The sampling unit 2 is provided with a locking mechanism that can close the sampling port. A locking mechanism pull rod 22 is provided in the connecting portion 21. A clamping portion 221 is provided at the top of the locking mechanism pull rod 22. The clamping portion 221 is connected to the cross bar 15, so that the locking mechanism pull rod 22 moves up and down with the cross bar 15.

[0036] A lock buckle is provided on the pull rope 3 at intervals of 0.5 m, and each lock buckle is connected to the pulling line 31 , and the pulling line 31 can be pulled by pulling the lock buckle.

[0037] When the deep-water sediment sampler of this embodiment is used for sampling, after the sampler is put into the bottom mud, the lifting line 31 is first pulled upward by pulling the lock buckle, driving the lifting rod 14 to move upward, the lifting rod 14 drives the cross bar 15, and the cross bar drives the locking mechanism pull rod 22 to move upward, so that the locking mechanism blocks the sampling port of the sampling unit 2. Then, the deep-water sediment sampler is pulled up by the pull rope 3 to complete the sampling.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep-water sediment sampler, characterized in that: It includes a bracket, a cable and a plurality of sampling units; The bracket does not include a cylindrical counterweight body and a supporting rod, the supporting rod is detachably connected to the bottom of the side of the counterweight body, the sampling unit is connected to the supporting rod, and the cable is connected to the top of the counterweight body; The central axis of the sampling unit is parallel to the central axis of the counterweight body, the sampling port faces downward, and the sampling units are centrally symmetrically distributed.

2. The deep-water sediment sampler according to claim 1, characterized in that: A plurality of supporting rod connecting holes are arranged at the bottom of the side surface of the counterweight body, and the supporting rods are detachably connected to the supporting rod connecting holes; The support rod is provided with a sampling unit interface, and the sampling unit is detachably connected to the sampling unit interface via a connecting portion at the top.

3. The deep-water sediment sampler according to claim 2, characterized in that: The central axis of the counterweight body is provided with a central cavity, the supporting rod connecting hole has a connecting hole cavity, the top of the central cavity is open, and the bottom is connected with the supporting rod connecting hole cavity; The cable is connected to the top of the counterweight body and blocks the top opening of the central cavity. A pulling line is arranged inside the cable and runs through the entire cable. A lifting rod is arranged inside the central cavity, the top of the lifting rod is connected to the lifting wire, and a plurality of cross bar joints are arranged at the bottom of the lifting rod, facing the directions of the plurality of support rod connection holes respectively; A supporting rod cavity is provided in the middle of the supporting rod, the supporting rod cavity is communicated with the central cavity, one end of the cross bar is detachably connected to the cross bar joint, passes through the connecting hole cavity and the supporting rod cavity, and the other end is arranged at the sampling unit interface; The sampling unit is provided with a locking mechanism capable of closing the sampling port, a locking mechanism pull rod is provided in the connecting portion, a clamping portion is provided at the top of the locking mechanism pull rod, and the clamping portion is detachably connected to the cross bar.

4. The deep-water sediment sampler according to claim 2, characterized in that: The number of the support rod connection holes is 6.

5. The deep-water sediment sampler according to claim 3, characterized in that: A lock buckle is arranged on the pull cable at a certain interval, and each of the lock buckles is connected to the pulling line.

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