A sample acquisition device for marine geological exploration

Abstract

The present invention discloses a sample acquisition device for marine geological exploration, including a casing, a sampling assembly that can move up and down is arranged in the casing, the sampling assembly includes a rope, a power mechanism, a pressing mechanism and a sampling mechanism, the power mechanism and the pressing mechanism are arranged on the sampling mechanism, the rope is connected to the pressing mechanism, the power mechanism provides the sampling mechanism with power to slide up and down, and the pressing mechanism is used in conjunction with the casing to provide a downward pressing force for the sampling mechanism when sampling. When the present invention is used, the casing is first inserted into the seabed, and then the sampling assembly is put into the casing, the power assembly drives the sampling mechanism to move, and the pressing mechanism drives the sampling mechanism to sample, which has good sampling effect, accurate sampling position and reduces interference with the sample.

Description

Technical Field

[0001] The invention relates to the technical field of geological exploration, and in particular to a sample acquisition device for marine geological exploration. Background Art

[0002] Marine exploration is a systematic, comprehensive scientific investigation and research of the ocean and its underlying strata, aimed at discovering, evaluating and developing marine resources, as well as further protecting the marine environment and contributing to the sustainable development of mankind.

[0003] In the process of geological exploration of the ocean, it is necessary to sample and analyze the sedimentary layers on the seabed. The methods for collecting samples generally use grab buckets, trawl nets and box sampling. The most common of these methods is box sampling. During the sampling process, the sampler is slowly lowered at a uniform speed. When the sampler reaches the seabed, the sampling tube is inserted into the seabed sediment by the gravity of the weight. The closed shovel rotates to cut the seabed sediment into the sampling tube, and then slowly pulls it out. However, the sampling process only relies on its own gravity, and the sampling effect is poor. In order to better sample, the existing sampling device fixes the sampling device to the seabed, which will only disturb the sedimentary layer, and the sampling point is uncertain, which will lead to inaccurate results. Summary of the invention

[0004] The purpose of the present invention is to provide a sample acquisition device for marine geological exploration, which is first positioned by a casing, and then a sampling component is lowered to cooperate with the casing for sampling, thereby solving the problems of poor sampling effect, disturbance of sedimentary layers and uncertainty of sampling points.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A sample acquisition device for marine geological exploration comprises a casing, wherein a sampling assembly movable up and down is arranged in the casing, the sampling assembly comprises a rope, a power mechanism, a pressing mechanism and a sampling mechanism, the power mechanism and the pressing mechanism are arranged on the sampling mechanism, the rope is connected to the pressing mechanism, the power mechanism provides power for the sampling mechanism to slide up and down, and the pressing mechanism is used in conjunction with the casing to provide downward pressing force for the sampling mechanism when sampling.

[0007] The present invention is further configured as follows: two slide grooves are symmetrically arranged in the casing, the slide grooves are vertically arranged in the casing, the sampling mechanism includes a supporting tube, a sampling tube and a sealing mechanism, a slider is arranged on the circumferential side of the supporting tube, the slider is slidably connected to the slide groove, the lower end of the supporting tube is an open end, the sampling tube is provided with multiple and evenly distributed in the supporting tube, the sampling tube is open at the lower end, the sampling tube is detachably connected to the supporting tube, the sealing mechanism is arranged at the lower end of the sampling tube, and the sealing mechanism is used to seal the lower open end of the sampling tube after the sampling tube is inserted into the sediment layer.

[0008] The present invention is further configured as follows: adsorption holes are evenly opened at the lower end of the sampling cylinder, the adsorption holes are connected to a water pump, the water pump is installed in the supporting cylinder, the sealing mechanism comprises a first rotating motor, a connecting block, a accommodating chamber, a rotating shaft, a sealing piece and a cutting rod, the first rotating motor is arranged in the middle part of the supporting cylinder, the output shaft of the first rotating motor is connected to the connecting block, the accommodating chamber is at the lower end of the sampling cylinder, the accommodating chamber is located between two adjacent sampling cylinders and is arranged along the radial direction of the supporting cylinder, one end of the accommodating chamber is connected to the lower end of the supporting cylinder, the rotating shaft is arranged in the accommodating chamber, one end of the sealing piece is rolled on the rotating shaft, the cutting rod is arranged in the accommodating chamber, one end of the cutting rod is connected to the connecting block, the first rotating motor drives the cutting rod to rotate along the lower end of the supporting cylinder, the other end of the sealing piece is connected to the cutting rod, and the sealing piece is annular and made of plastic.

[0009] The present invention is further configured as follows: the lower end of the connecting block is a pointed end, and the rotating side of the cutting rod is in the shape of a pointed end.

[0010] The present invention is further configured as follows: a water outlet of the water pump is connected to the upper end of the support tube.

[0011] The present invention is further configured as follows: a plurality of retaining rings are provided at equal intervals from bottom to top in the portion near the lower end of the sleeve, the retaining rings protrude from the slide groove, and the retaining rings are in a missing state at the slide groove; the pressing mechanism comprises a second rotating motor, a telescopic motor and a pressing plate; the second rotating motor is provided at the upper end of the support tube, the telescopic motor is vertically provided at the upper end of the second rotating motor, the lower end of the telescopic motor is connected to the output shaft of the second rotating motor, the upper end of the second rotating motor is connected to the middle part of the pressing plate, the pressing plate moves up and down outside the slide groove, and the two ends of the pressing plate can be rotated to the lower end of the retaining ring.

[0012] The present invention is further configured as follows: the power mechanism includes an extension tube and a propeller, the extension tube is arranged at the upper end of the support tube, the upper end of the support tube is provided with a through hole penetrating the support tube, the peripheral side of the support tube is provided with a connecting hole, and the propeller is arranged in the extension tube.

[0013] In summary, the present invention has the following beneficial effects:

[0014] First, when the present invention is used, the casing is first inserted into the seabed, and then the sampling assembly is placed from the casing, the power assembly drives the sampling mechanism to move, and the pressing mechanism drives the sampling mechanism to take samples, which has good sampling effect, accurate sampling position and reduced interference with the sample.

[0015] Secondly, the sampling tube in the present invention is inserted downward into the sediment layer by pressing the pressing mechanism, and then the first rotating motor drives the cutting rod to rotate, cutting off the lower end of the sampling tube from the sediment layer and sealing it with a sealing sheet. Finally, the water pump is turned on, and the sealing sheet is firmly adsorbed on the lower end of the sampling tube to seal the lower end of the sampling tube, so that the sample can be taken out well.

[0016] Third, when the sampling mechanism reaches the sedimentary layer, the pressing mechanism in the present invention rotates the pressing plate through the second rotating motor to rotate the pressing plate to the lower end of any one of the retaining rings, and then the telescopic motor is extended to press against the retaining ring, and the sampling mechanism moves downward to perform sampling work. The sampling effect is good, and the casing can also be used during drilling to isolate the drill pipe from seawater and reduce the mud generated by the drill pipe working to affect the surrounding environment.

[0017] Fourthly, the power mechanism in the present invention propels the sampling mechanism up and down through the propeller, thereby accelerating the moving speed of the sampling mechanism and ensuring working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional view of the present invention;

[0019] Figure 2 It is an enlarged view of the sealing mechanism in the present invention;

[0020] Figure 3 It is a bottom view of the present invention;

[0021] Figure 4 It is a top view in the present invention.

[0022] In the figure: 1. sleeve; 11. slide groove; 12. retaining ring; 2. rope; 3. power mechanism; 31. extension tube; 32. thruster; 4. pressing mechanism; 41. second rotating motor; 42. telescopic motor; 43. pressing plate; 5. sampling mechanism; 51. supporting tube; 511. slider; 512. water pump; 513. through hole; 514. connecting hole; 52. sampling tube; 521. adsorption hole; 53. sealing mechanism; 531. first rotating motor; 532. connecting block; 533. accommodating chamber; 534. rotating shaft; 535. sealing sheet; 536. cutting rod. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment, a sample acquisition device for marine geological exploration, such as Figures 1 to 4As shown, it includes a sleeve 1, in which a sampling assembly that can move up and down is arranged. The sampling assembly includes a rope 2, a power mechanism 3, a pressing mechanism 4 and a sampling mechanism 5. The power mechanism 3 and the pressing mechanism 4 are arranged on the sampling mechanism 5. The rope 2 is connected to the pressing mechanism 4. The power mechanism 3 provides the sampling mechanism 5 with power to slide up and down. The pressing mechanism 4 is used in conjunction with the sleeve 1 to provide a downward pressing force for the sampling mechanism 5 when sampling. When in use, the sleeve 1 is first inserted into the sediment layer, and then the sampling assembly is placed into the sleeve 1. The power mechanism 3 drives the sampling assembly to move up and down, and the pressing mechanism 4 presses the sampling mechanism 5 to sample, and presses the sampling mechanism 5 into the sediment layer to ensure the sampling effect. Of course, the rope 2 is not only used to lift the sampling assembly, but also includes cables for electrical transmission and signal transmission.

[0028] Two chute grooves 11 are symmetrically arranged in the casing 1. The chute grooves 11 are vertically arranged in the casing 1. The sampling mechanism 5 includes a support tube 51, a sampling tube 52 and a sealing mechanism 53. A slider 511 is arranged on the peripheral side of the support tube 51. The slider 511 is slidably connected to the chute 11. The lower end of the support tube 51 is an open end. There are multiple sampling tubes 52 and they are evenly distributed in the support tube 51. The sampling tube 52 is open at the lower end. The sampling tube 52 is detachably connected to the support tube 51. The sealing mechanism 53 is arranged at the lower end of the sampling tube 52. The sealing mechanism 53 is used to seal the lower open end of the sampling tube 52 after the sampling tube 52 is inserted into the sediment layer. The chute 11 and the slider 511 are used to limit the sampling assembly to prevent the sampling assembly from rotating and deflecting in the casing 1, because in order for the sampling assembly to move in the casing 1, there will be a gap between the sampling assembly and the casing 1 for water to flow through. When sampling, the support tube 51 and the sampling tube 52 are inserted into the sediment layer together, and then the sampling tube 52 is sealed with the sealing mechanism 53, which is simple and convenient.

[0029] The lower end of the sampling tube 52 is evenly provided with adsorption holes 521, and the adsorption holes 521 are connected to the water pump 512, and the water pump 512 is installed in the support tube 51. The sealing mechanism 53 includes a first rotating motor 531, a connecting block 532, a accommodating chamber 533, a rotating shaft 534, a sealing piece 535 and a cutting rod 536. The first rotating motor 531 is arranged in the middle of the support tube 51, and the output shaft of the first rotating motor 531 is connected to the connecting block 532. The accommodating chamber 533 is at the lower end of the sampling tube 52, and the accommodating chamber 533 is located between two adjacent sampling tubes. The accommodating chamber 533 is arranged between the cylinders 52 and along the radial direction of the supporting cylinder 51, one end of the accommodating chamber 533 is connected to the lower end of the supporting cylinder 51, the rotating shaft 534 is arranged in the accommodating chamber 533, one end of the sealing piece 535 is rolled on the rotating shaft 534, the cutting rod 536 is arranged in the accommodating chamber 533, one end of the cutting rod 536 is connected to the connecting block 532, the first rotating motor 531 drives the cutting rod 536 to rotate along the lower end of the supporting cylinder 51, the other end of the sealing piece 535 is connected to the cutting rod 536, and the sealing piece 535 is in a circular ring shape and is made of plastic. The sealing mechanism 53 drives the cutting rod 536 to rotate through the first rotating motor 531, and cuts the part of the sediment layer outside the sampling tube 52. In this process, the sealing sheet 535 is unfolded to cover the lower end of the sampling tube 52, and the water pump 512 cooperates to pump water to form a negative pressure to fix the sealing sheet 535. The sealing sheet 535 must be able to be stored in the storage cavity and maintain a certain strength, so plastic is the best choice. Let the lower end of the connecting block 532 be a pointed end, and the side where the cutting rod 536 rotates is pointed. The connecting block 532 can be better inserted into the sediment layer, and the cutting rod 536 can also better cut the sediment layer.

[0030] The water outlet of the water pump 512 is connected to the upper end of the support tube 51. When the sampling assembly is diving, the water pump 512 can work to pump water under the sampling assembly to the upper part to provide power for the sampling assembly.

[0031] A plurality of retaining rings 12 are provided at equal intervals from bottom to top in the part near the lower end of the sleeve 1, and the retaining rings 12 protrude from the slide groove 11. The retaining rings 12 are in a missing state at the slide groove 11. The pressing mechanism 4 includes a second rotating motor 41, a telescopic motor 42 and a pressing plate 43. The second rotating motor 41 is provided at the upper end of the support tube 51, and the telescopic motor 42 is vertically provided at the upper end of the second rotating motor 41. The lower end of the telescopic motor 42 is connected to the output shaft of the second rotating motor 41, and the upper end of the second rotating motor 41 is connected to the middle part of the pressing plate 43. The pressing plate 43 moves up and down outside the slide groove 11, and the two ends of the pressing plate 43 can be rotated to the lower end of the retaining ring 12. When the sampling assembly reaches the sediment layer, the sampling tube 52 and the support tube 51 will be inserted into the sediment layer according to their own gravity, and then the second rotary motor 41 drives the pressing plate 43 to rotate, so that the pressing plate 43 rotates to the lower end of the retaining ring 12, and then the telescopic motor 42 works to extend, pressing the sampling tube 52 downward and further inserting it into the sediment layer to ensure the sampling depth. Of course, if the sampling depth is deeper, the telescopic motor 42 can be retracted and the pressing plate 43 can be rotated to select the retaining ring 12 of the next level, and then press and sample again.

[0032] The power mechanism 3 includes an extension tube 31 and a propeller 32. The extension tube 31 is arranged at the upper end of the support tube 51. The upper end of the support tube 51 is provided with a through hole 513 penetrating the support tube 51. The peripheral side of the support tube 51 is provided with a connecting hole 514. The propeller 32 is arranged in the extension tube 31. The propeller 32 is generally a propeller. When working, water flows through the extension tube 31, the connecting hole 514 and the through hole 513 to form thrust for the sampling assembly.

[0033] Usage method: insert the casing 1 into the sediment layer with the help of a drilling tool, then put the sampling assembly into the casing 1, adjust the speed of the power mechanism 3 to let the sampling assembly dive, and when it reaches the sediment layer, open the pressing mechanism 4 to collect the sample, and after collecting, seal the sampling tube 52 with a sealing mechanism, then take out the sampling assembly, invert the sampling assembly after taking it out, open the sealing mechanism, and then take out the sampling tube 52 to save the sample. The installed casing 1 can be used for drilling, reducing the large amount of sediment generated during the drilling process and affecting the ecological environment.

[0034] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, 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 sample acquisition device for marine geological exploration, characterized in that: The invention comprises a sleeve (1), wherein a sampling assembly which can move up and down is arranged in the sleeve (1), wherein the sampling assembly comprises a rope (2), a power mechanism (3), a pressing mechanism (4) and a sampling mechanism (5), wherein the power mechanism (3) and the pressing mechanism (4) are arranged on the sampling mechanism (5), wherein the rope (2) is connected to the pressing mechanism (4), wherein the power mechanism (3) provides the sampling mechanism (5) with power to slide up and down, and wherein the pressing mechanism (4) cooperates with the sleeve (1) to provide the sampling mechanism (5) with a downward pressing force when sampling; Two slide grooves (11) are symmetrically arranged in the sleeve (1), and the slide grooves (11) are vertically arranged in the sleeve (1). The sampling mechanism (5) comprises a support tube (51), a sampling tube (52) and a sealing mechanism (53). A slider (511) is arranged on the peripheral side of the support tube (51), and the slider (511) is slidably connected to the slide groove (11). The lower end of the support tube (51) is an open end. A plurality of sampling tubes (52) are arranged and are evenly distributed in the support tube (51). The sampling tube (52) is open at the lower end. The sampling tube (52) is detachably connected to the support tube (51). The sealing mechanism (53) is arranged at the lower end of the sampling tube (52), and the sealing mechanism (53) is used to seal the lower open end of the sampling tube (52) after the sampling tube (52) is inserted into the sediment layer. A plurality of retaining rings (12) are provided at equal intervals from bottom to top in the part near the lower end of the sleeve (1), the retaining rings (12) protrude from the slide groove (11), and the retaining rings (12) are in a missing state at the slide groove (11); the pressing mechanism (4) comprises a second rotating motor (41), a telescopic motor (42) and a pressing plate (43); the second rotating motor (41) is provided at the upper end of the support tube (51), the telescopic motor (42) is vertically provided at the upper end of the second rotating motor (41), the lower end of the telescopic motor (42) is connected to the output shaft of the second rotating motor (41), the upper end of the second rotating motor (41) is connected to the middle part of the pressing plate (43), the pressing plate (43) moves up and down outside the slide groove (11), and the two ends of the pressing plate (43) can be rotated to the lower end of the retaining ring (12).

2. A sample acquisition device for marine geological exploration according to claim 1, characterized in that: The lower end of the sampling tube (52) is evenly provided with adsorption holes (521), and the adsorption holes (521) are connected to a water pump (512). The water pump (512) is installed in the support tube (51). The sealing mechanism (53) comprises a first rotating motor (531), a connecting block (532), a accommodating chamber (533), a rotating shaft (534), a sealing sheet (535) and a cutting rod (536). The first rotating motor (531) is arranged in the middle of the support tube (51), and the output shaft of the first rotating motor (531) is connected to the connecting block (532). The accommodating chamber (533) is at the lower end of the sampling tube (52), and the accommodating chamber (533) is located between two adjacent sampling tubes ( 52) and is arranged along the radial direction of the support tube (51), one end of the accommodating chamber (533) is connected to the lower end of the support tube (51), the rotating shaft (534) is arranged in the accommodating chamber (533), one end of the sealing piece (535) is rolled on the rotating shaft (534), the cutting rod (536) is arranged in the accommodating chamber (533), one end of the cutting rod (536) is connected to the connecting block (532), the first rotating motor (531) drives the cutting rod (536) to rotate along the lower end of the support tube (51), the other end of the sealing piece (535) is connected to the cutting rod (536), and the sealing piece (535) is in a circular ring shape and is made of plastic.

3. A sample acquisition device for marine geological exploration according to claim 2, characterized in that: The lower end of the connecting block (532) is a pointed end, and the rotating side of the cutting rod (536) is in the shape of a pointed end.

4. A sample acquisition device for marine geological exploration according to claim 3, characterized in that: The water outlet of the water pump (512) is connected to the upper end of the support tube (51).

5. A sample acquisition device for marine geological exploration according to claim 4, characterized in that: The power mechanism (3) comprises an extension tube (31) and a propeller (32); the extension tube (31) is arranged at the upper end of the support tube (51); a through hole (513) penetrating the support tube (51) is provided at the upper end of the support tube (51); a connecting hole (514) is provided on the circumferential side of the support tube (51); and the propeller (32) is arranged in the extension tube (31).

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