Riverbed sand sampling method and sampling device based on heavy sand mineral dispersion halo

Abstract

The invention relates to a riverbed sand sampling method and sampling device based on heavy sand mineral dispersion halo, and discloses a riverbed sand sampling device which collects riverbed sand through rotation and pressing operation and prevents river water from entering the riverbed sand through a sealing plate to affect a sampling result. The device is characterized in that the device is composed of a drilling assembly and a sealing assembly, the drilling assembly is composed of three partition plates, a supporting cylinder, a collecting cylinder, a drilling cylinder, a sand discharging groove, a water discharging hole, a one-way exhaust valve, a connecting rod and a handle, the partition plates are fixedly connected with the inner side face of the supporting cylinder, the supporting cylinder is of a cylindrical structure, each partition plate is of an annular structure, and the supporting cylinder is fixedly connected with the supporting cylinder. The first partition plate is fixedly connected with the inner side face of the top end of the supporting cylinder, the second partition plate is fixedly connected with the inner side face of the middle of the supporting cylinder, the third partition plate is fixedly connected with the inner side face of the bottom end of the supporting cylinder, and the diameter of the inner ring face of the third partition plate is slightly smaller than that of the inner ring faces of the other two partition plates.

Description

Technical Field

[0001] The invention discloses a riverbed sand sampling method and sampling device based on the dispersion halo of heavy sand minerals, relates to a riverbed sand sampling device for the dispersion halo of heavy sand minerals, belongs to the technical field of geological exploration, and particularly relates to a riverbed sand sampling device based on the dispersion halo of heavy sand minerals, which collects riverbed sand by rotating and pressing down, and prevents river water from entering and affecting the sampling results by a sealing plate. Background Art

[0002] In geological research and mineral exploration, the analysis of riverbed sand is crucial. However, the existing riverbed sand sampling devices face many difficulties in actual operation. On the one hand, the collected riverbed sand samples often contain river water, which makes the subsequent processing process extremely complicated. Usually, it takes multiple tedious steps such as sedimentation, filtration, and drying to obtain relatively pure riverbed sand for subsequent analysis. This process not only consumes a lot of time and manpower, but also increases the difficulty and workload of sample processing. More importantly, if the separation is not thorough, the residual river water will have a serious impact on the subsequent analysis results; on the other hand, river water often contains various impurities and pollutants. When river water and riverbed sand enter the sampler together, these impurities and pollutants will greatly affect the purity and representativeness of the sample.

[0003] Publication No. CN219455527U discloses a grab sampler, comprising a frame (1), a top plate (2) is provided at the upper end of the frame (1), a lifting cylinder (3) is provided at the lower part of the top plate (2), an angle adjustment mechanism (4) is connected to the protruding end of the lifting cylinder (3), and a sampling grab (5) is provided at the bottom of the angle adjustment mechanism (4); the angle adjustment mechanism (4) comprises a main body seat (6) connected to the protruding end of the lifting cylinder (3); Publication No. CN213301760U discloses a new type of sludge sampler, a handle is connected to a spring through a pull rope installed in an operating rod, and the bottom of the handle is connected to the operating rod through a first fixing screw The two rods are connected, the bottom end of the operating rod is connected and fixed to the three-way branch pipe by a second fixing screw, the bottom end of the pull rope is provided with a lifting ring, and the top of the grab bucket is provided with a through hole, the bottom end of the pull rope and the top of the grab bucket are connected at the same point by connecting screws passing through the lifting ring and the through hole respectively, and the spring is placed in the three-way branch pipe. The riverbed sand samples collected by the sampler often contain river water, and the subsequent processing process is extremely complicated, which not only consumes a lot of time and manpower, but also increases the difficulty and workload of sample processing. In addition, river water often contains various impurities and pollutants. When river water and riverbed sand enter the sampler together, these impurities and pollutants will greatly affect the purity and representativeness of the sample. Summary of the invention

[0004] In order to improve the above situation, the riverbed sand sampling method and sampling device based on the dispersion halo of heavy sand minerals of the present invention provide a riverbed sand sampling device which collects riverbed sand by rotating and pressing down, and prevents river water from entering and affecting the sampling results through a sealing plate.

[0005] The riverbed sand sampling method and sampling device based on the dispersion halo of heavy sand minerals of the present invention are implemented as follows: The riverbed sand sampling device based on the dispersion halo of heavy sand minerals of the present invention is composed of a drilling component and a sealing component. The drilling assembly is composed of a partition, a support tube, a collecting tube, a drilling tube, a sand discharge trough, a drainage hole, a one-way exhaust valve, a connecting rod and a handle. The partition is fixedly connected to the inner side of the support tube. Preferably, the support tube is in a cylindrical structure, the partition is in a circular ring structure, and three partitions are provided, the first partition is fixedly connected to the inner side surface of the top of the support tube, the second partition is fixedly connected to the inner side surface of the middle of the support tube, and the third partition is fixedly connected to the inner side surface of the bottom end of the support tube, and the inner ring surface diameter of the third partition is slightly smaller than the inner ring surface diameters of the other two partitions. The collecting tube is fixedly connected to the inner side surfaces of the first and second partitions, and the collecting tube is placed above the third partition with a certain distance. Preferably, the collecting tube is cylindrical in structure and has an open bottom. The diameter of the inner side surface of the opening end of the collecting tube is the same as the diameter of the inner annular surface of the third partition. The top surface of the drill tube is fixedly connected to the bottom end of the support tube. Preferably, the drill tube has a cylindrical structure, the inner diameter of the drill tube is the same as the inner diameter of the collecting tube, the outer diameter of the drill tube gradually increases from the bottom to the top, and the outer diameter of the top of the drill tube is the same as the outer diameter of the supporting tube. The outer sides of the drill tube and the support tube are provided with sand removal grooves, which are spirally wound and arranged on the outer sides of the drill tube and the support tube. The drill tube has a drainage hole near the top thereof, which penetrates the drill tube from the inner side to the outer side. The central axis of the drainage hole is perpendicular to the central axis of the drill tube. A plurality of the drainage holes are arranged equidistantly along the circumference of the drill tube. A one-way exhaust valve is provided at the top of the collecting tube. One end of the connecting rod is fixedly connected to the middle of the top surface of the collecting cylinder, and the other end of the connecting rod is fixedly connected to the middle of the handle. Preferably, the connecting rod is in a cylindrical structure, and both ends of the handle are in an arc-shaped structure. The sealing assembly is composed of a sealing motor, a bevel gear, a rotating ring, a bevel gear ring, a sealing plate, a rotating shaft and a connecting arc rod. The sealed motor is fixed on the second partition. The bevel gear axle passes through the second partition plate and is fixedly connected to the sealed motor shaft, and a support bearing is arranged between the bevel gear axle and the second partition plate. The inner side surface of the support tube near the bottom end is provided with an annular sliding groove. The rotating ring is placed in the support tube, the rotating ring is placed above the third partition plate, and the distance between the rotating ring and the third partition plate is small. The side of the rotating ring is provided with an annular sliding rib, and the rotating ring is rotatably connected with the support tube through the annular sliding rib and the annular sliding groove. Preferably, the rotating ring is in a circular ring structure, and the diameter of the inner side surface from the bottom end to the half of the rotating ring is larger than the diameter of the inner side surface from the half to the top end. The bevel gear ring is fixed on the rotating ring, and the bevel gear ring is meshed with the bevel gear. The sealing plate is placed between the third partition plate and the collecting tube in the vertical direction. The sealing plate is an equilateral triangle structure, and the three sides are arcs. There are six sealing plates, and the six sealing plates form a circular structure. The diameter of the circle is slightly larger than the inner side diameter of the third partition plate, and the sealing plate is coaxially arranged with the partition plate. The rotating shaft is rotatably connected to an angle position of the sealing plate near the circular edge, the bottom end of the rotating shaft is rotatably connected to the third partition plate, the top end of the rotating shaft is rotatably connected to the bottom end of the collecting tube, the sealing plate is rotatably connected to the collecting tube through the rotating shaft, and the rotating shaft corresponds to the sealing plate one by one. A connecting block is fixedly disposed near another corner of the circular edge of the sealing plate. One end of the connecting arc rod is rotatably connected to the top surface of the rotating ring at one-half position, and the other end of the connecting arc rod is rotatably connected to the connecting block. The connecting arc rod corresponds to the sealing plate one by one. The present invention also relates to a riverbed sand sampling method based on the dispersion halo of heavy sand minerals, characterized in that the riverbed sand sampling device based on the dispersion halo of heavy sand minerals is used to sample the riverbed sand, specifically comprising the following steps: (1) Place the bottom of the drill tube close to the surface of the riverbed sand and ensure that the entire device is vertically upright. Hold the handle with both hands to drive the entire sampling device to rotate clockwise while pressing down, so that the entire device can be pushed down; (2) During the downward movement, the riverbed sand will be discharged along the sand discharge trough to the top of the top baffle, and the river water inside the drill tube will flow out through the drainage hole; (3) When the bottom surface of the sealing plate contacts the riverbed sand, the sealing motor drives the bevel gear to rotate. Due to the meshing relationship between the bevel gear ring and the bevel gear, the bevel gear ring can rotate at a small angle, thereby pulling the sealing plate to rotate around the rotating shaft. Finally, the sealing plate is placed above the third partition plate, so that the drill tube and the collection tube are connected. In this way, the riverbed sand can smoothly enter the interior of the collection tube; (4) The device is continuously pushed downward, and the air inside the collection tube is discharged through the one-way exhaust valve, so that the riverbed sand can be effectively collected inside the collection tube; (5) After moving down to the specified depth, the sealing motor is driven to rotate in the opposite direction, so that the space inside the collection tube and the drill tube can be blocked by multiple sealing plates. Finally, the entire device is pulled upward to complete the sampling of riverbed sand. Furthermore, the side of the collecting tube is provided with scale lines, and the scale lines are provided in multiple groups, and each group is provided with five scale lines, and the length of the lowest scale line in each group is slightly greater than that of the other four scale lines, and the scale lines are filled with luminescent materials; Furthermore, the first sealing strip and the second sealing strip are fixed on two side surfaces adjacent to the other two sealing plates, respectively. The first sealing strip and the second sealing strip are in the form of long strips. Both the first sealing strip and the second sealing strip are made of rubber. The width of the first sealing strip gradually decreases from one end connected to the sealing plate to the other end, and the width of the second sealing strip gradually decreases from one end connected to the sealing plate to the other end. The first sealing strip is placed close to the top surface of the sealing plate, and the second sealing strip is placed close to the bottom surface of the sealing plate. The first sealing strip corresponds to the sealing plates one-to-one, and the second sealing strip corresponds to the sealing plates one-to-one. Beneficial Effects

[0006] 1. Effectively prevent river water from entering the collection tube, thereby ensuring the purity of the collected riverbed sand samples.

[0007] Second, since the collected riverbed sand samples contain no or very little river water, the subsequent processing process is greatly simplified, and there is no need for tedious sedimentation, filtration, drying and other steps, saving time and labor costs.

[0008] 3. Since the contamination of samples by river water is avoided, the device can provide more accurate and reliable riverbed sand analysis results.

[0009] 4. The device is easy to operate. The entire sampling process can be completed by simply controlling the handle and the sealing motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural diagram of the riverbed sand sampling device based on the dispersion halo of heavy sand minerals of the present invention; Figure 2 It is a schematic structural diagram of a riverbed sand sampling device based on the dispersion halo of heavy sand minerals of the present invention; Figure 3 It is a schematic structural diagram of a riverbed sand sampling device based on the dispersion halo of heavy sand minerals of the present invention; Figure 4It is a three-dimensional structural diagram of Example 2 of a riverbed sand sampling method and a sampling device based on the dispersion halo of heavy sand minerals of the present invention; Figure 5 It is a three-dimensional structural diagram of Example 3 of the riverbed sand sampling method and sampling device based on the dispersion halo of heavy sand minerals of the present invention, which only shows the structure of the sealing plate. Attached photos

[0011] The components include: a support tube (1), a collecting tube (2), a one-way exhaust valve (3), a connecting rod (4), a handle (5), a sand discharge trough (6), a drill tube (7), a bevel gear (8), a sealed motor (9), a partition (10), a bevel gear ring (11), a rotating ring (12), a drainage hole (13), a connecting arc rod (14), a rotating shaft (15), a sealing plate (16), a scale line (17), a first sealing strip (18), and a second sealing strip (19). DETAILED DESCRIPTION Example 1

[0012] The riverbed sand sampling method and sampling device based on the dispersion halo of heavy sand minerals of the present invention are implemented as follows: The riverbed sand sampling device based on the dispersion halo of heavy sand minerals of the present invention is composed of a drilling component and a sealing component. The drilling assembly is composed of a partition plate (10), a support tube (1), a collection tube (2), a drilling tube (7), a sand discharge trough (6), a drainage hole (13), a one-way exhaust valve (3), a connecting rod (4) and a handle (5). The partition plate (10) is fixedly connected to the inner side surface of the support tube (1). Preferably, the support tube (1) is in a cylindrical structure, the partition (10) is in a circular ring structure, and three partitions (10) are provided, the first partition (10) is fixedly connected to the inner side surface of the top end of the support tube (1), the second partition (10) is fixedly connected to the inner side surface of the middle part of the support tube (1), and the third partition (10) is fixedly connected to the inner side surface of the bottom end of the support tube (1), and the inner ring surface diameter of the third partition (10) is slightly smaller than the inner ring surface diameters of the other two partitions (10). The collecting tube (2) is fixedly connected to the inner side surfaces of the first and second partitions (10), and the collecting tube (2) is placed above the third partition (10) at a certain distance. Preferably, the collecting tube (2) is of cylindrical structure and has an open structure at the bottom. The diameter of the inner side surface of the open end of the collecting tube (2) is the same as the diameter of the inner annular surface of the third partition (10). The top surface of the drill tube (7) is fixedly connected to the bottom end of the support tube (1). Preferably, the drill tube (7) is of cylindrical structure, the inner diameter of the drill tube (7) is the same as the inner diameter of the collecting tube (2), the outer diameter of the drill tube (7) gradually increases from the bottom to the top, and the outer diameter of the top of the drill tube (7) is the same as the outer diameter of the supporting tube (1). The outer side surfaces of the drill tube (7) and the support tube (1) are provided with sand discharge grooves (6), and the sand discharge grooves (6) are spirally wound and arranged on the outer side surfaces of the drill tube (7) and the support tube (1). The drill tube (7) is provided with a drainage hole (13) near the top end thereof, which penetrates the drill tube (7) from the inner side surface to the outer side surface. The central axis of the drainage hole (13) is perpendicular to the central axis of the drill tube (7). A plurality of the drainage holes (13) are arranged at equal intervals along the circumference of the drill tube (7). A one-way exhaust valve (3) is disposed at the top of the collecting cylinder (2). One end of the connecting rod (4) is fixedly connected to the middle of the top surface of the collecting tube (2), and the other end of the connecting rod (4) is fixedly connected to the middle of the handle (5). Preferably, the connecting rod (4) is in a cylindrical structure, the connecting rod (4) is in a cylindrical structure, and both ends of the handle (5) are in an arc-shaped structure. The sealing assembly is composed of a sealing motor (9), a bevel gear (8), a rotating ring (12), a bevel gear ring (11), a sealing plate (16), a rotating shaft (15), and a connecting arc rod (14). The sealed motor (9) is fixed on the second partition (10). The bevel gear (8) axle passes through the second partition plate (10) and is fixedly connected to the motor shaft of the sealed motor (9), and a support bearing is disposed between the bevel gear (8) and the second partition plate (10). The support tube (1) is provided with an annular sliding groove on the inner side surface near the bottom end. The rotating ring (12) is disposed in the support tube (1). The rotating ring (12) is disposed above the third partition plate (10) and is relatively close to the third partition plate (10). An annular sliding rib is disposed on the side of the rotating ring (12). The rotating ring (12) is rotatably connected to the support tube (1) by cooperating with the annular sliding groove through the annular sliding rib. Preferably, the rotating ring (12) is in the form of a circular ring, and the diameter of the inner side surface from the bottom end to the halfway point of the rotating ring (12) is greater than the diameter of the inner side surface from the halfway point to the top end. The bevel gear ring (11) is fixedly placed on the rotating ring (12), and the bevel gear ring (11) is meshed with the bevel gear (8). The sealing plate (16) is disposed between the third partition plate (10) and the collecting tube (2) in the vertical direction. The sealing plate (16) is in an equilateral triangle structure, and the three sides are arcs. There are six sealing plates (16). The six sealing plates (16) form a circular structure. The diameter of the circle is slightly larger than the inner side diameter of the third partition plate (10), and the sealing plate is coaxially arranged with the partition plate (10). The rotating shaft (15) is rotatably connected to an angle position of the sealing plate (16) near the circular edge, the bottom end of the rotating shaft (15) is rotatably connected to the third partition plate (10), the top end of the rotating shaft (15) is rotatably connected to the bottom end of the collecting tube (2), the sealing plate (16) is rotatably connected to the collecting tube (2) via the rotating shaft (15), and the rotating shaft (15) and the sealing plate (16) correspond one to one. A connecting block is fixedly disposed near another corner of the circular edge of the sealing plate (16). One end of the connecting arc rod (14) is rotatably connected to the top surface of the rotating ring (12) at one-half position, and the other end of the connecting arc rod (14) is rotatably connected to the connecting block. The connecting arc rod (14) corresponds to the sealing plate (16) in a one-to-one manner. The present invention provides a riverbed sand sampling method based on the dispersion halo of heavy sand minerals, which is characterized by comprising the following steps: (1) Place the bottom of the drill tube (7) close to the surface of the riverbed sand and ensure that the entire device is vertically upright. Hold the handle (5) with both hands to drive the entire device to rotate clockwise while pressing downward, so that the entire device can be pushed downward; (2) During the downward movement, riverbed sand will be discharged along the sand discharge trough (6) to the top of the top baffle (10), while river water inside the drill tube (7) will flow out through the drainage hole (13); (3) When the bottom surface of the sealing plate (16) contacts the riverbed sand, the sealing motor (9) drives the bevel gear (8) to rotate. Due to the meshing relationship between the bevel gear ring (11) and the bevel gear (8), the bevel gear ring (11) can rotate at a small angle, thereby pulling the sealing plate (16) to rotate around the rotating shaft (15), and finally placing the sealing plate (16) above the third partition plate (10), so that the drill tube (7) and the collection tube (2) are connected. In this way, the riverbed sand can smoothly enter the interior of the collection tube (2); (4) The device is continuously pushed downward, and the air inside the collecting tube (2) is discharged through the one-way exhaust valve (3), so that the riverbed sand can be effectively collected inside the collecting tube (2); (5) After moving down to the specified depth, the sealing motor (9) is driven to rotate in the opposite direction, so that the space inside the collecting tube (2) and the drilling tube (7) can be blocked by a plurality of sealing plates (16). Finally, the entire device is pulled upward to complete the sampling of the riverbed sand; Example 2

[0013] The difference between this embodiment and embodiment 1 is that the side of the collecting tube (2) is provided with scale lines (17), the scale lines (17) are provided in a plurality of groups, each group of the scale lines (17) is provided with five scale lines, the length of the lowest scale line (17) in each group is slightly greater than the length of the other four scale lines (17), the scale lines (17) are filled with luminous material, and when in use, the scale lines (17) provide a user with an intuitive way to monitor the depth of the device moving downward, and the scale lines (17) are filled with reflective material, so that they can be clearly seen even in a low-light environment, thereby ensuring that the accuracy of the measurement is not affected. Example 3

[0014] The difference between this embodiment and embodiment 1 is that a first sealing strip (18) and a second sealing strip (19) are respectively fixedly disposed on two side surfaces of the sealing plate (16) adjacent to the other two sealing plates (16); the first sealing strip (18) and the second sealing strip (19) are in the form of long strips; the first sealing strip (18) and the second sealing strip (19) are both made of rubber; the width of the first sealing strip (18) gradually decreases from one end connected to the sealing plate (16) to the other end; the width of the second sealing strip (19) gradually decreases from one end connected to the sealing plate (16) to the other end; the first sealing strip (18) and the second sealing strip (19) are respectively fixedly disposed on the two side surfaces of the sealing plate (16) adjacent to the other two sealing plates (16); the first sealing strip (18) and the second sealing strip (19) are respectively in the form of long strips; ... The sealing strip (18) is placed close to the top surface of the sealing plate (16), and the second sealing strip (19) is placed close to the bottom surface of the sealing plate (16). The first sealing strip (18) corresponds to the sealing plate (16) one-to-one, and the second sealing strip (19) corresponds to the sealing plate (16) one-to-one. When in use, the first sealing strip (18) and the second sealing strip (19) can effectively and completely seal the space inside the collection tube (2), preventing river water from penetrating into the collection tube (2) through the tiny gap between the sealing plates (16), thereby ensuring the accuracy of data during the sampling process and avoiding interference of external factors on the sampling results. The diameter of the outer side surface of the drill tube (7) gradually increases from the bottom end to the top end. The outer side surface diameter of the top end of the drill tube (7) is designed to be the same as the outer side surface diameter of the support tube (1). The diameter of the outer side surface of the drill tube (7) gradually increases from the bottom end to the top end, which enables the drill tube (7) to better adapt to the drilling of riverbed sand, and can also reduce the friction between the drill tube (7) and the riverbed sand, reduce the resistance during drilling, and make the entire device easier to move downward. The outer side surface diameter of the top end of the drill tube (7) is the same as the outer side surface diameter of the support tube (1), which can ensure that the entire device remains in a vertical state during the drilling process, avoiding drilling difficulties or inaccurate sampling due to tilting; The outer side surfaces of the drill tube (7) and the support tube (1) are provided with sand discharge grooves (6). The sand discharge grooves (6) are spirally wound around the outer side surfaces of the drill tube (7) and the support tube (1), and can discharge riverbed sand in time to avoid excessive accumulation of riverbed sand in the device, thereby increasing resistance and improving sampling efficiency. At the same time, riverbed sand sampling at different depths can be performed. Regardless of how the sampling depth changes, the sand discharge grooves (6) can effectively discharge riverbed sand, thereby ensuring smooth sampling. The top of the collecting tube (2) is provided with a one-way exhaust valve (3), which can timely exhaust the air inside the collecting tube (2), reduce the pressure difference, and enable the riverbed sand to enter the collecting tube (2) more smoothly, thereby improving the sampling efficiency, and at the same time avoiding the pollution or oxidation problem caused by the air staying in the collecting tube (2) for too long; The sealing plate (16) is placed between the third partition plate (10) and the collecting tube (2) in the vertical direction. The sealing plate (16) is in an equilateral triangle structure, and the three sides are arcs. There are six sealing plates (16). The six sealing plates (16) form a circular structure. The diameter of the circle is slightly larger than the inner diameter of the third partition plate (10). The sealing plate (16) is coaxially arranged with the partition plate (10). The collecting tube (2) and the drill tube (7) can be separated by the sealing plate (16), so as to prevent river water from entering the collecting tube (2) during the sand mining process, thereby helping to maintain the purity and accuracy of the collected riverbed sand sample and reducing the workload of subsequent processing and analysis; The purpose of collecting riverbed sand by rotating and pressing down is achieved, and at the same time, the sealing plate (16) is used to prevent river water from entering and affecting the sampling results.

[0015] It should be noted that, unless otherwise clearly specified and limited, the terms "placed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection method such as a folding connection, a rivet connection, a pin connection, a bonding connection and a welding connection, or a detachable connection method such as a threaded connection, a snap connection and a hinge connection, or an integral connection, or an electrical connection, or a direct connection, or an indirect connection through an intermediate medium, or the internal connection 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.

[0016] It should be further pointed out that, when describing the above specific embodiment, for the sake of simplicity and clarity, only the differences between the above specific embodiment and other embodiments are described, but those skilled in the art should know that the above specific embodiment itself is also an independent technical solution.

Claims

1. A riverbed sand sampling method based on the dispersion halo of heavy sand minerals, characterized in that: The sampling of riverbed sand using the riverbed sand sampling device based on the heavy sand mineral dispersion halo specifically includes the following steps: (1) Place the bottom of the drill tube close to the surface of the riverbed sand and ensure that the entire device is vertically upright. Hold the handle with both hands to drive the entire sampling device to rotate clockwise while pressing down, so that the entire device can be pushed down; (2) During the downward movement, the riverbed sand will be discharged along the sand discharge trough to the top of the top baffle, and the river water inside the drill tube will flow out through the drainage hole; (3) When the bottom surface of the sealing plate contacts the riverbed sand, the sealing motor drives the bevel gear to rotate. Due to the meshing relationship between the bevel gear ring and the bevel gear, the bevel gear ring can rotate at a small angle, thereby pulling the sealing plate to rotate around the rotating shaft. Finally, the sealing plate is placed above the third partition plate, so that the drill tube and the collection tube are connected. In this way, the riverbed sand can smoothly enter the interior of the collection tube; (4) The device is continuously pushed downward, and the air inside the collection tube is discharged through the one-way exhaust valve, so that the riverbed sand can be effectively collected inside the collection tube; (5) After moving down to the specified depth, the sealing motor is driven to rotate in the opposite direction, so that the space inside the collection tube and the drill tube can be blocked by multiple sealing plates. Finally, the entire device is pulled upward to complete the sampling of riverbed sand.

2. A riverbed sand sampling method based on the dispersion halo of heavy sand minerals according to claim 1, characterized in that The riverbed sand sampling device based on the dispersion halo of heavy sand minerals is composed of a drilling component and a sealing component. The drilling component is composed of a partition, a support tube, a collecting tube, a drilling tube, a sand discharge trough, a drainage hole, a one-way exhaust valve, a connecting rod and a handle. The partition is fixedly connected to the inner side surface of the support tube. There are three partitions. The first partition is fixedly connected to the inner side surface of the top of the support tube, the second partition is fixedly connected to the inner side surface of the middle of the support tube, and the third partition is fixedly connected to the inner side surface of the bottom end of the support tube. The collecting tube is fixedly connected to the inner sides of the first and second partitions. The top surface of the drill tube is fixedly connected with the bottom end of the support tube, and a sand discharge groove is provided on the outer side of the drill tube and the support tube. A drainage hole that penetrates the drill tube from the inner side to the outer side is provided near the top of the drill tube. A one-way exhaust valve is provided on the top of the collecting tube. One end of the connecting rod is fixedly connected with the middle part of the top surface of the collecting tube, and the other end of the connecting rod is fixedly connected with the middle part of the handle. The sealing assembly consists of a sealing motor, a bevel gear, a rotating ring, a bevel gear ring, a sealing plate, a rotating shaft and a connecting arc rod. The sealing motor is fixedly placed on the second partition plate, and the bevel gear axle passes through the second partition plate. The plate is fixedly connected to the motor shaft of the sealed motor, and a support bearing is arranged between the plate and the second partition. An annular sliding groove is opened on the inner side surface of the support tube near the bottom end. The rotating ring is arranged in the support tube. The rotating ring is arranged above the third partition and is relatively close to the third partition. An annular sliding rib is arranged on the side of the rotating ring. The rotating ring is rotatably connected to the support tube through the annular sliding rib and the annular sliding groove. The bevel gear ring is fixedly placed on the rotating ring. The bevel gear ring is meshed with the bevel gear. The sealing plate is arranged on the third partition in the vertical direction. Between the collecting tube, the rotating shaft is rotatably connected to an angular position of the sealing plate near the circular edge, the bottom end of the rotating shaft is rotatably connected to the third partition plate, the top end of the rotating shaft is rotatably connected to the bottom end of the collecting tube, the sealing plate is rotatably connected to the collecting tube through the rotating shaft, the rotating shaft and the sealing plates correspond one to one, a connecting block is fixedly arranged near another angular position of the circular edge of the sealing plate, one end of the connecting arc rod is rotatably connected to the top surface at one-half of the rotating ring, the other end of the connecting arc rod is rotatably connected to the connecting block, and the connecting arc rod and the sealing plates correspond one to one.

3. A riverbed sand sampling method based on the dispersion halo of heavy sand minerals according to claim 2, characterized in that The collecting tube has scale lines on its side, which are arranged in multiple groups. Each group has five scale lines. The length of the lowest scale line in each group is slightly greater than that of the other four scale lines. The scale lines are filled with luminescent materials.

4. A riverbed sand sampling method based on the dispersion halo of heavy sand minerals according to claim 2, characterized in that The first sealing strip and the second sealing strip are fixed on two side surfaces of the sealing plate adjacent to the other two sealing plates, respectively. The first sealing strip and the second sealing strip are in the form of long strips. Both the first sealing strip and the second sealing strip are made of rubber. The width of the first sealing strip gradually decreases from one end connected to the sealing plate to the other end, and the width of the second sealing strip gradually decreases from one end connected to the sealing plate to the other end. The first sealing strip is placed close to the top surface of the sealing plate, and the second sealing strip is placed close to the bottom surface of the sealing plate. The first sealing strip corresponds to the sealing plates one-to-one, and the second sealing strip corresponds to the sealing plates one-to-one.

5. A riverbed sand sampling method based on the dispersion halo of heavy sand minerals according to claim 2, characterized in that The support tube has a cylindrical structure, the partition has a circular ring structure, the inner ring surface diameter of the third partition is slightly smaller than the inner ring surface diameters of the other two partitions, the collecting tube is placed above the third partition with a certain distance, the collecting tube has a cylindrical structure, and the bottom end is an open structure, the inner side surface diameter of the opening end of the collecting tube is the same as the inner ring surface diameter of the third partition.

6. A riverbed sand sampling method based on the dispersion halo of heavy sand minerals according to claim 2, characterized in that The drill barrel has a cylindrical structure, the inner diameter of the drill barrel is the same as the inner diameter of the collecting barrel, the outer diameter of the drill barrel gradually increases from the bottom to the top, and the outer diameter of the top of the drill barrel is the same as the outer diameter of the supporting barrel.

7. A riverbed sand sampling method based on the dispersion halo of heavy sand minerals according to claim 2, characterized in that The sand discharge groove is spirally wound and arranged on the outer surfaces of the drill tube and the support tube. The central axis of the drainage hole is perpendicular to the central axis of the drill tube. A plurality of drainage holes are arranged equidistantly along the circumference of the drill tube.

8. A riverbed sand sampling method based on the dispersion halo of heavy sand minerals according to claim 2, characterized in that The connecting rod is in a cylindrical structure, and both ends of the handle are in an arc-shaped structure.

9. A riverbed sand sampling method based on the dispersion halo of heavy sand minerals according to claim 2, characterized in that The rotating ring is in a circular ring structure, and the diameter of the inner side surface from the bottom end to the half of the rotating ring is larger than the diameter of the inner side surface from the half to the top end.

10. A riverbed sand sampling method based on the dispersion halo of heavy sand minerals according to claim 2, characterized in that The sealing plate is an equilateral triangle structure, and the three sides are arcs. There are six sealing plates, and the six sealing plates form a circular structure. The diameter of the circle is slightly larger than the inner side diameter of the third partition, and the circle is coaxially arranged with the partition.

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