River sediment sampling device for hydrology and water resource engineering

Abstract

The invention belongs to the technical field of hydrology detection, and relates to a river sediment sampling device for hydrology and water resource engineering, the river sediment sampling device comprises a sampler, the sampler comprises a shell, a rotating part and a sampling part, the shell is of a cylindrical hollow structure, the side wall of the shell is provided with a sampling port, and the rotating part comprises a motor and a cylinder with an opening at one end; the cylinder is located in the shell, the motor is arranged on the outer wall of the left end face of the shell, a transmission shaft of the motor penetrates through the left end face of the shell to be connected with the end face of the cylinder, a pawl is arranged on the inner wall of the cylinder, the sampling component comprises a sampling seat and a plurality of samplers, the sampling seat is located in the shell, and a plurality of sampling grooves are formed in the sampling seat in the circumferential direction; the plurality of samplers are arranged in the sampling grooves in a one-to-one correspondence manner; and the right end surface of the sampling seat is rotationally connected with the inner wall of the right end surface of the shell. According to the river bottom mud sampling device for hydrology and water resource engineering, a plurality of bottom mud samples can be taken out at different positions at a time without taking the sampling device out of the water surface.

Description

Technical Field

[0001] The invention belongs to the technical field of hydrological detection, and relates to a river bottom mud sampling device for hydrological and water resources engineering. Background Art

[0002] With the continuous development of social economy and the continuous improvement of people's living standards, people pay more and more attention to health. Water is the source of life and people's lives cannot be separated from water. Drinking water in people's lives is obtained through a series of impurity removal and filtration operations. Generally, before using river water resources, it is necessary to test and study the water and riverbed mud of the river. The sampling device is a sampling device used to take out the silt at the bottom of the river and test the composition of the silt, so as to obtain various data of the river, which is convenient for subsequent scientific research. The detection of riverbed mud requires the use of a river bottom mud sampling device.

[0003] At present, there are two devices for sampling river sediments. One is to insert a sampling tube into the river sediment to obtain the river sediment. The other is to lower the sampler into the river sediment by a lifting structure, and the sampler performs excavation and sampling. No matter which of the above methods is used, it is necessary to put it into the river sediment for sampling multiple times before the sediment samples at different positions can be taken out. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a river sediment sampling device for hydrological and water resources engineering, which can take out multiple sediment samples at different positions at one time without taking the sampling device out of the water.

[0005] The sampling device of the present invention is fixed on a sampling rod, and the sampling rod is extended into the river bottom for sampling. The sampling device comprises a shell, a rotating component and a sampling component. The shell is a cylindrical hollow structure, and a sampling port is arranged on the side wall of the shell. The rotating component comprises a motor and a barrel with an opening at one end, and the barrel is located inside the shell. The motor is arranged on the outer wall of the left end face of the shell. The transmission shaft of the motor passes through the left end face of the shell and is connected with the end face of the barrel to drive the barrel to rotate in the shell. A ratchet is arranged on the inner wall of the barrel. The sampling component comprises a sampling seat and a plurality of samplers. The sampling seat is located inside the shell. The sampling seat is a cylinder, and a plurality of sampling grooves are arranged in the circumferential direction of the sampling seat. The plurality of samplers are arranged in the sampling grooves in a one-to-one correspondence. The right end face of the sampling seat is rotatably connected with the inner wall of the right end face of the shell, so that the sampling seat rotates in the shell. A ratchet is fixed on the left end face of the sampling seat, and the ratchet is driven to rotate by the ratchet, thereby driving the sampling seat to rotate, so that the sampler is aligned with the sampling port.

[0006] Furthermore, a plurality of teeth are provided along the circumferential direction on one side of the inner wall of the cylinder close to the end face, forming an incomplete internal gear structure, a ratchet is provided at a position corresponding to the toothless portion on the other side of the inner wall of the cylinder, a cavity is provided inside the sampling seat, an external gear is provided at the left ends of the plurality of transmission rods, the external gears are meshed with the teeth inside the cylinder, the right ends of the plurality of transmission rods pass through the ratchet and the end face of the sampling seat and extend into the cavity, the number of transmission rods is equal to the number of samplers, each sampler comprises a sampling barrel, a baffle and a threaded rod, a plurality of sampling barrels are arranged one by one in the sampling groove, grooves are provided on two opposite side walls of the sampling barrel along the length direction, the baffle is located in the sampling barrel, and the baffle and the groove are slidably matched to enable the baffle to slide in the sampling barrel, the threaded rod passes through the baffle and the bottom of the sampling groove and extends into the cavity, the threaded rod located in the cavity is connected to the transmission rod at the corresponding position through two bevel gears, and the baffle is threadedly connected to the threaded rod.

[0007] Furthermore, a spring is provided between each sampling tube and the bottom of the sampling slot, and each threaded rod passes through a corresponding spring.

[0008] Furthermore, the plurality of transmission rods are arranged in a circle and are arranged at equal intervals.

[0009] Furthermore, there are two ratchets, and each rotation angle is 360 / 2N degrees, where N is the number of samplers.

[0010] Furthermore, the opening of the sampling tube is arc-shaped and fits closely with the inner wall of the shell.

[0011] Furthermore, the motor is a servo motor.

[0012] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0013] The present invention extends the sampling device into the riverbed mud through the sampling rod, controls the motor to drive the cylinder to rotate inside the shell, and the pawl in the cylinder moves the ratchet on the sampling seat to align the sampling groove with the sampling port. At this time, the sampling rod is pressed to move the shell into the river bottom mud, and the river bottom mud enters the sampler through the sampling port. At this time, the sampler takes the mud sample, and then controls the motor to rotate the cylinder again. At this time, the sampler that takes the sample is closed by the inner wall of the shell, and the sample does not fall out of the sampler. At the same time, the next sampler takes samples by aligning with the sampling port. Compared with the prior art, the present invention does not need to take the sampling device out of the water, and can take out multiple mud samples at different positions at one time.

[0014] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of a sampler according to one embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the structure of a sampling seat according to one embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the internal structure of a sampling seat according to one embodiment of the present invention;

[0019] Figure 4 The tooth matching between the internal gear and the cylinder of one embodiment of the present invention Figure 1 ;

[0020] Figure 5 The tooth matching between the internal gear and the cylinder of one embodiment of the present invention Figure 2 .

[0021] Reference numerals:

[0022] 1. Shell; 101. Shell; 102. Shell cover; 2. Sampling port; 3. Motor; 4. Cylinder; 5. Ratchet; 6. Sampling seat; 7. Sampler; 701. Sampling cylinder; 702. Baffle; 703. Threaded rod; 8. Sampling slot; 9. Ratchet; 10. Teeth; 11. Cavity; 12. Transmission rod; 13. External gear; 14. Bevel gear; 15. Groove; 16. Spring. DETAILED DESCRIPTION

[0023] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0024] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the embodiments of the present invention, unless otherwise specified, “plurality” means two or more.

[0026] like Figures 1 to 5 As shown, the present invention provides a river sediment sampling device for hydrological and water resources engineering, which is fixed on a sampling rod and extends into the riverbed through the sampling rod to take samples. The device comprises a shell 1, a rotating component and a sampling component. The shell 1 is a cylindrical hollow structure, and a sampling port 2 is arranged on the side wall of the shell 1. The rotating component comprises a motor 3 and a cylinder 4 with an opening at one end. The cylinder 4 is located inside the shell 1. The motor 3 is arranged on the outer wall of the left end face of the shell 1. The transmission shaft of the motor 3 passes through the left end face of the shell 1 and is connected with the end face of the cylinder 4 to drive the cylinder 4 to rotate in the shell 1. A ratchet 5 is provided on the inner wall of the cylinder 4, and the sampling component includes a sampling seat 6 and a plurality of samplers 7. The sampling seat 6 is located inside the outer shell 1. The sampling seat 6 is a cylinder. The sampling seat 6 is provided with a plurality of sampling grooves 8 along the circumferential direction. The plurality of samplers 7 are arranged in the sampling grooves 8 in a one-to-one correspondence. The right end face of the sampling seat 6 is rotatably connected to the inner wall of the right end face of the outer shell 1 so that the sampling seat 6 can rotate in the outer shell 1. A ratchet 9 is fixed on the left end face of the sampling seat 6. The ratchet 9 is driven to rotate by the ratchet 5, thereby driving the sampling seat 6 to rotate, so that the sampler 7 is aligned with the sampling port 2.

[0027] The present invention extends the sampling device into the riverbed mud through the sampling rod, controls the motor 3 to drive the cylinder 4 to rotate inside the shell 1, and the pawl 5 in the cylinder 4 moves the ratchet 9 on the sampling seat 6 to align the sampling groove 8 with the sampling port 2. The sampler 7 takes the mud sample through the sampling port 2, and then the cylinder 4 continues to rotate, allowing the remaining samplers 7 to take samples from the sampling port 2 in turn. Compared with the prior art, the present invention does not need to take the sampling device out of the water, and can take out multiple mud samples at different positions at one time.

[0028] It should be noted that the ratchet 9 is not coaxial with the cylinder 4. This is to prevent the pawl 5 from always cooperating with the ratchet 9 and causing the sampling seat 6 to rotate continuously. The non-coaxiality means that the ratchet 9 can only be driven to rotate once when the cylinder 4 rotates one circle, so as to control the alignment of the sampling slot 8 and the sampling port 2.

[0029] Optionally, the sampler 7 may be placed into the river by a lifting device, or the sampler 7 may be extended into the river by a sampling rod.

[0030] Optionally, the housing 1 includes a shell 101 and a shell cover 102 , and the shell 101 and the shell cover 102 are detachably connected to facilitate installation of various parts inside the sampler 7 .

[0031] like Figures 3 to 5As shown, in the embodiment provided by the present invention, a plurality of teeth 10 are provided along the circumferential direction on one side of the inner wall of the cylinder 4 close to the end face, forming an incomplete internal gear structure, a ratchet 5 is provided at a position corresponding to the portion without teeth 10 on the other side of the inner wall of the cylinder 4, a cavity 11 is provided inside the sampling seat 6, an external gear 13 is provided at the left end of a plurality of transmission rods 12, the external gear 13 is meshed with the teeth 10 in the cylinder 4, and the right ends of the plurality of transmission rods 12 pass through the ratchet 9 and the end face of the sampling seat 6 and extend into the cavity 11, the number of the transmission rods 12 is equal to the number of the samplers 7, and each sampler 7 includes a sampling barrel 701 , baffle 702 and threaded rod 703, multiple sampling barrels 701 are arranged in the sampling slot 8 in a one-to-one correspondence, and grooves 15 are provided on the two opposite side walls of the sampling barrel 701 along the length direction. The baffle 702 is located in the sampling barrel 701, and the baffle 702 and the groove 15 are slidably matched to make the baffle 702 slide in the sampling barrel 701, and the threaded rod 703 passes through the baffle 702 and the bottom of the sampling slot 8 and extends into the cavity 11. The threaded rod 703 located in the cavity 11 is connected to the transmission rod 12 at the corresponding position through two bevel gears 14, and the baffle 702 is threadedly connected to the threaded rod 703.

[0032] Specifically: when the sampling slot 8 is aligned with the sampling port 2, the sampler 7 of the present invention is pressed to contact the bottom mud through the lifting device or the sampling rod, and the cylinder body 4 rotates to drive the transmission rod 12 to rotate, thereby driving the threaded rod 703 to rotate through the two bevel gears 14. Since the threaded rod 703 and the baffle 702 are threadedly connected, and the baffle 702 and the sampling barrel 701 are slidably matched, the baffle 702 moves into the sampling barrel 701 at this time, and the bottom mud enters the sampler 7, thereby sampling. In this way, since the sampler 7 is in direct contact with the bottom mud, there is no need for excess river water to enter the sampling barrel 701. When the sampling is completed, the pawl 5 drives the ratchet 9 to rotate, thereby rotating the sampling seat 6, so that the opening of the sampling slot 8 is in contact with the shell 1 for sealing.

[0033] Furthermore, a flexible sealing rubber is provided at the opening edge of the sampling tube 701 to prevent a gap between the sampling tube 701 and the housing 1 that has been sampled, thereby preventing the bottom mud sample from flowing out.

[0034] In the embodiment provided by the present invention, a spring 16 is provided between each sampling tube 701 and the bottom of the sampling slot 8 , and each threaded rod 703 passes through the corresponding spring 16 .

[0035] Specifically, when the sampling tube 701 and the sampling port 2 are aligned, the spring 16 squeezes the sampling tube 701 to extend, so that the sampling tube 701 impacts the bottom mud and digs out the bottom mud. The sampler 7 of the present invention is pressed to contact the bottom mud through the lifting device or the sampling rod. The rotation of the cylinder body 4 drives the transmission rod 12 to rotate, thereby driving the threaded rod 703 to rotate through the two bevel gears 14. Since the threaded rod 703 and the baffle 702 are threadedly connected, and the baffle 702 and the sampling tube 701 are slidably matched, the baffle 702 moves into the sampling tube 701 at this time, and the bottom mud enters the sampler 7, thereby sampling. When the baffle 702 contacts the bottom of the sampling tube 701, the threaded rod 703 continues to rotate, and the baffle 702 squeezes the bottom of the sampling tube 701 to shrink the sampling tube 701 into the sampling seat 6. The pawl 5 drives the ratchet 9 to rotate again, thereby the sampling seat 6 rotates, so that the opening of the sampling slot 8 contacts the shell 1 for sealing.

[0036] In the embodiment provided by the present invention, a plurality of transmission rods 12 are arranged in a circle and are disposed at equal intervals.

[0037] It can be understood that the circular equidistant arrangement can ensure that the ratchet wheel 9 and the pawl 5 cooperate with each other and the rotation angle is consistent each time.

[0038] In the embodiment provided by the present invention, there are two ratchets 5 , and the angle of each rotation is 360 / 2N degrees, where N is the number of samplers 7 .

[0039] Specifically, the cylinder 4 rotates one circle, and the two pawls 5 cooperate with the ratchet 9 respectively. The pawl 5 cooperates with the ratchet 9 for the first time to align the sampling slot 8 with the sampling port 2. The second pawl 5 cooperates with the ratchet 9 to make the sampling slot 8 leave the sampling port 2 and cooperate with the outer shell 1. This can ensure that after the last sampling, when the sampler 7 is taken out of the water, the sediment sample in the last sampler 7 will not fall off.

[0040] It can be understood that the angle of each rotation is 360 / 2N degrees, in order to ensure that after sampling, the sampling tube 701 faces the housing 1 and is sealed by the sealing rubber.

[0041] In the embodiment provided by the present invention, the opening of the sampling tube 701 is arc-shaped and fits closely with the inner wall of the housing 1 .

[0042] It can be understood that the arc shape helps the mechanical energy coordination between the sampling tube 701 and the housing 1.

[0043] In the embodiment provided by the present invention, the motor 3 is a servo motor.

[0044] It can be understood that the motor 3 of the present invention needs to control the number of rotations of the barrel 4, and thus is controlled by a servo motor.

[0045] It can be understood that the motor 3 is remotely controlled via a wireless controller.

[0046] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0047] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A river sediment sampling device for hydrological and water resources engineering, fixed on a sampling rod, through which the sampling rod is extended into the riverbed for sampling, characterized in that: It comprises a housing (1), a rotating component and a sampling component; The housing (1) is a cylindrical hollow structure, and a sampling port (2) is provided on the side wall of the housing (1); The rotating component comprises a motor (3) and a cylinder (4) with an open end, the cylinder (4) being located inside the housing (1), the motor (3) being arranged on the outer wall of the left end surface of the housing (1), the transmission shaft of the motor (3) passing through the left end surface of the housing (1) and being connected to the end surface of the cylinder (4) so ​​as to drive the cylinder (4) to rotate inside the housing (1), and a ratchet (5) being arranged on the inner wall of the cylinder (4); The sampling component comprises a sampling seat (6) and a plurality of samplers (7). The sampling seat (6) is located inside the housing (1). The sampling seat (6) is a cylinder. The sampling seat (6) is provided with a plurality of sampling grooves (8) along the circumferential direction. The plurality of samplers (7) are arranged in the sampling grooves (8) in a one-to-one correspondence. The right end surface of the sampling seat (6) is rotatably connected to the inner wall of the right end surface of the housing (1) so that the sampling seat (6) rotates inside the housing (1). A ratchet (9) is fixed on the left end surface of the sampling seat (6). The ratchet (9) is driven to rotate by the ratchet pawl (5), thereby driving the sampling seat (6) to rotate, so that the sampler (7) is aligned with the sampling port (2).

2. A river sediment sampling device for hydrological and water resources engineering according to claim 1, characterized in that: A plurality of teeth (10) are provided along the circumferential direction on one side of the inner wall of the cylinder (4) close to the end surface, forming an incomplete internal gear structure, and a ratchet (5) is provided at a position corresponding to the portion without teeth (10) on the other side of the inner wall of the cylinder (4); A cavity (11) is provided inside the sampling seat (6), and an external gear (13) is provided at the left end of a plurality of transmission rods (12), the external gear (13) meshing with the teeth (10) in the cylinder (4), and the right ends of the plurality of transmission rods (12) pass through the ratchet (9) and the end surface of the sampling seat (6) and extend into the cavity (11), and the number of the transmission rods (12) is equal to the number of the samplers (7); Each of the samplers (7) comprises a sampling barrel (701), a baffle (702) and a threaded rod (703). The plurality of sampling barrels (701) are arranged in a one-to-one correspondence in the sampling slot (8). The sampling barrel (701) is provided with grooves (15) on two opposite side walls along the length direction. The baffle (702) is located in the sampling barrel (701), and the baffle (702) and the groove (15) are slidably matched so that the baffle (702) slides in the sampling barrel (701). The threaded rod (703) passes through the baffle (702) and the bottom of the sampling slot (8) and extends into the cavity (11). The threaded rod (703) located in the cavity (11) is connected to the transmission rod (12) at a corresponding position through two bevel gears (14), and the baffle (702) is threadedly connected to the threaded rod (703).

3. A river sediment sampling device for hydrological and water resources engineering according to claim 2, characterized in that: A spring (16) is provided between each sampling tube (701) and the bottom of the sampling slot (8), and each threaded rod (703) passes through the corresponding spring (16).

4. A river sediment sampling device for hydrological and water resources engineering according to claim 2, characterized in that: The plurality of transmission rods (12) are arranged in a circle and are arranged at equal intervals.

5. A river sediment sampling device for hydrological and water resources engineering as claimed in claim 2, characterized in that: There are two ratchets (5), and each rotation angle is 360 / 2N degrees, where N is the number of samplers (7).

6. A river sediment sampling device for hydrological and water resources engineering as claimed in claim 2, characterized in that: The opening of the sampling tube (701) is arc-shaped and fits closely with the inner wall of the outer shell (1).

7. A river sediment sampling device for hydrological and water resources engineering according to claim 1, characterized in that: The motor (3) is a servo motor.

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