Underwater soil sampling equipment for water conservancy geological survey

Abstract

The invention belongs to the technical field of soil sampling, and discloses an underwater soil sampling device for water conservancy geological survey, the underwater soil sampling device comprises a counterweight seat and a foot rod fixedly connected to the bottom of the counterweight seat, the bottom of the counterweight seat is fixedly provided with a driving assembly, and the lower part of the counterweight seat is provided with a communicated mounting assembly. According to the invention, after the sampling outer cylinder is inserted into underwater soil and soil filling and sampling are completed, the sampling inner cylinder assembly is utilized to move and open an elastic air bag ring in the sealing combination mechanism, and filled air is guided in a matched manner, so that sufficient expansion of the elastic air bag ring is realized, and the bottom of the sampling outer cylinder after sampling is completed is separated and sealed underwater; the sampling outer barrel with the open bottom is prevented from being impacted and broken by flowing water flow when moving upwards underwater after sampling, the structure of sampled soil is stable and the sampled soil is prevented from being dispersed into a water body in the underwater soil sampling process through timely separation and sealing, the actual operation is simple, the protection effect is good, and the actual underwater soil collection effect is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of soil sampling, in particular to underwater soil sampling equipment for water conservancy and geological survey. Background Art

[0002] Underwater soil sampling equipment in hydrogeological surveys is mainly used to collect soil samples in underwater environments for soil analysis and evaluation. It is usually used in surveys of water bodies such as rivers, lakes, reservoirs or oceans.

[0003] The underwater soil sampling equipment used in the prior art for water conservancy and geological surveys is affected by underwater water flow during underwater soil sampling. After the sampling end of the device enters the water, since the device is immersed in the water body, water flows into and fills the sampling tube group, affecting subsequent soil sampling and filling. At the same time, after the sampling process, as the sampling tube group is removed from the soil layer, the bottom of the sampling tube remains open and in contact with the underwater water flow. Under the disturbance of the water flow, the sampled soil in the sampling tube group is damped and decomposed and dispersed into the water body. In fact, there are double adjustments before and after sampling, and manual operation is often required by manual diving. The actual soil sampling operation in underwater geological surveys is difficult and the sampling results are poor. Summary of the Invention

[0004] The object of the present invention is to provide an underwater soil sampling device for water conservancy and geological survey to solve the problems raised in the above background technology.

[0005] Base comprises support, castor, and frame upper is provided with guide rail, and support and conveyer frames movable end contact site are provided with recoil spring or rubber cushion, and castor is arranged on the pin of base bottom four, to carry out pin connection respectively.

[0006] The closed combination mechanism includes a No. 1 port, a reserved annular cavity, an elastic airbag ring and a middle groove. The elastic airbag ring is nested in the inner wall of the sampling outer cylinder and close to the lower end of the sampling outer cylinder. The No. 1 port and the reserved annular cavity are respectively opened on the outer side and inner side of the sampling outer cylinder. The middle groove is opened on the inner wall of the sampling outer cylinder. The middle groove, the reserved annular cavity and the No. 1 port constitute a connecting airway and are connected to the elastic airbag ring.

[0007] Preferably, the communicating mounting assembly includes a support frame, an intermediate cavity and an air pump. The support frame is fixedly connected to the outer side of the upper end of the sampling outer cylinder. The intermediate cavity is opened inside the support frame, and one end is connected to the No. 1 port. The air pump is fixed to the outer side of the support frame through the bracket. The air outlet end of the air pump is connected to the intermediate cavity. An air storage part is also provided in the bracket, and the air inlet end of the air pump is connected to the air storage part.

[0008] Preferably, the sampling inner cylinder assembly includes an inner cylinder, an intermediate ring, spring 2 and hole No. 1. The inner cylinder is movably sleeved inside the sampling outer cylinder. The length of the inner cylinder is less than the upper and lower end lengths of the inner cavity of the sampling outer cylinder, and greater than the upper and lower end lengths of the reserved ring cavity. The elastic airbag ring is located on the moving path of the inner cylinder. The intermediate ring is fixedly sleeved inside the inner cylinder. One end of the spring 2 is fixed inside the sampling outer cylinder, and the other end is fixedly connected to the intermediate ring. Hole No. 1 is opened on the front of the intermediate ring, and an air hole is provided above the outer surface of the sampling outer cylinder.

[0009] Preferably, the liquid treatment component includes a connecting arm, a movable cover, a filter cloth, a filter plate, a movable plug, a spring three and a No. 2 hole. The upper end of the connecting arm is fixedly connected to the movable end of the electric push rod, and the lower end of the connecting arm is fixedly connected to the movable cover. The filter cloth and the filter plate are fixedly sleeved on the inside of the movable cover from bottom to top, and the movable plug is movably sleeved on the inside of the movable cover. One end of the spring three is fixed on the inside of the movable cover, and the other end is fixedly connected to the movable plug. The No. 2 hole is opened on the top of the movable cover and is connected to the inside of the movable cover. The No. 2 hole corresponds one-to-one to the No. 1 hole.

[0010] Preferably, a through hole is opened on the top of the sampling outer cylinder, a bypass component is fixedly provided on the top of the sampling outer cylinder, a control valve is nested inside the middle cavity, and one end of the bypass component is connected to the control valve.

[0011] Preferably, the bypass assembly includes a No. 1 cylinder, a No. 2 cylinder, a connecting pipe, a U-shaped curved arm and a spring. The No. 1 cylinder and the No. 2 cylinder are fixedly connected to the top of the sampling outer cylinder. The No. 1 cylinder is connected to the through hole. The two ends of the U-shaped curved arm are movably connected to the No. 1 cylinder and the No. 2 cylinder respectively. One end of the spring is fixed in the No. 2 cylinder, and the other end is fixedly connected to the U-shaped curved arm. One end of the connecting pipe is fixedly connected to the side of the No. 2 cylinder, and the other end is fixedly connected to the control valve.

[0012] Preferably, the drive assembly includes a mounting plate, a clamping plate, a screw and a motor, the mounting plate is fixedly sleeved inside the counterweight seat, the clamping plate is fixedly connected to the bottom surface of the mounting plate, the motor is fixedly mounted on the top of the mounting plate, the screw is rotatably sleeved in the mounting plate, and is fixedly connected to the output shaft of the motor.

[0013] Preferably, the top of the mounting bracket is threadedly sleeved with the screw rod, and a sliding groove is provided on the outer side surface of the mounting bracket, and the clamping plate is slidably sleeved in the sliding groove.

[0014] Preferably, the top of the counterweight seat is fixedly connected to a mounting ring, the inner wall of the mounting ring is provided with threads, and the top of the counterweight seat is fixedly connected to a connecting piece, and the connecting piece is located in the mounting ring.

[0015] The beneficial effects of the present invention are as follows:

[0016] (1) The present invention utilizes the cooperation of the interconnected installation component, the closed combination mechanism and the sampling inner cylinder component. After the sampling outer cylinder is inserted into the underwater soil and the soil filling sampling is completed, the sampling inner cylinder component is used to move and open the elastic airbag ring in the closed combination mechanism, and cooperates to guide the filled air to achieve full expansion of the elastic airbag ring, and the bottom of the sampling outer cylinder after sampling is isolated and sealed underwater to prevent the sampling outer cylinder with the bottom open from being impacted and broken by the flowing water when it moves upward underwater after sampling. Through timely isolation and sealing, the structure of the sampled soil is guaranteed to be stable during the underwater soil sampling process to prevent it from being dispersed into the water body. The actual operation is simple and the protection effect is good, which greatly improves the actual underwater soil collection effect.

[0017] (2) The present invention utilizes the cooperation of the liquid treatment component and the electric push rod to achieve the sealing of the bottom of the sampling outer cylinder during the underwater movement, thereby preventing a large amount of water from being poured into the interior of the sampling outer cylinder during the underwater movement, and preventing the water from affecting the subsequent sampling process. At the same time, during the sampling process, the sampling outer cylinder is continuously inserted into the soil, and the liquid treatment component is synchronously controlled to move upward, and the filling control of the sampling inner cylinder assembly inside the sampling outer cylinder is continuously reserved. At the same time, the movement of the liquid treatment component in the sampling inner cylinder assembly is coordinated with the movement of the liquid treatment component to simulate the movement effect of the needle piston in the syringe, assist in the suction and extrusion of the filled soil, and guide the accelerated sampling soil to be quickly filled into the sampling inner cylinder assembly, ensuring that it is not affected by the underwater water flow before and during the sampling process, and promoting the filling of the sampling soil. At the same time, the electric push rod is used to drive the movement of the liquid treatment component to control the push of the sampling inner cylinder assembly. After the sampling filling is completed, the closure of the elastic airbag ring is released, and the closure processing process is automatically started.

[0018] (3) The present invention reuses the interconnected installation component, the liquid treatment component, and the sampling inner cylinder component, and cooperates with the bypass component. After completing soil sampling and bottom sealing, the ventilation direction is switched by the control valve, and the gas is guided to be input into the bypass component and drive the movement of the U-shaped curved arm to suck the upper space inside the sampling outer cylinder, and cooperate with the No. 1 hole and the No. 2 hole to realize internal suction of the liquid treatment component, and utilizes the pressure difference to realize the movement of the movable plug, thereby cooperating with the filter plate and the filter cloth to realize the absorption and separation of the moisture inside the sampled soil into the liquid treatment component, reducing the moisture content of the sampled soil, avoiding the high moisture content affecting the separation after sampling, providing the squeezing and pushing separation effect of the subsequent sampled soil, and improving the subsequent sampling and detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 is a schematic cross-sectional view of a drive assembly of the present invention;

[0021] Figure 3 is a schematic diagram of a drive assembly of the present invention;

[0022] Figure 4 A schematic diagram of the connection between the mounting bracket and the communicating mounting assembly of the present invention;

[0023] Figure 5 A schematic diagram of the connection between the interconnecting mounting assembly and the electric push rod of the present invention;

[0024] Figure 6 is a cross-sectional schematic diagram of the communication type mounting assembly of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection between the sampling outer cylinder and the bypass assembly of the present invention;

[0026] Figure 8 It is a cross-sectional schematic diagram of the sampling outer cylinder and the sampling inner cylinder assembly of the present invention;

[0027] Figure 9 This is a schematic cross-sectional view of the sampling outer cylinder of the present invention;

[0028] Figure 10 for Figure 9 A schematic diagram of the structure at center A;

[0029] Figure 11 It is a cross-sectional schematic diagram of the sampling inner cylinder assembly and the liquid processing component of the present invention;

[0030] Figure 12 for Figure 11 A magnified schematic diagram of the structure at B in the middle;

[0031] Figure 13Schematic diagram of the explosion of the bypass assembly of the present invention.

[0032] Figure: 1. Counterweight seat; 2. Foot rod; 3. Drive assembly; 31. Mounting plate; 32. Clamping plate; 33. Screw; 34. Motor; 4. Mounting frame; 5. Connecting mounting assembly; 51. Support frame; 52. Intermediate chamber; 53. Air pump; 6. Sampling outer cylinder; 7. Electric push rod; 8. Control valve; 9. Bypass assembly; 91. No. 1 cylinder; 92. No. 2 cylinder; 93. Connecting pipe; 94. U-shaped curved arm; 95. Spring 1; 10. No. 1 cylinder 1. Opening; 11. Reserved annular cavity; 12. Elastic airbag ring; 13. Sampling inner tube assembly; 131. Inner tube; 132. Middle ring; 133. Spring 2; 134. Hole No. 1; 14. Liquid handling component; 141. Connecting arm; 142. Movable cover; 143. Filter cloth; 144. Filter plate; 145. Movable plug; 146. Spring 3; 147. Hole No. 2; 15. Middle groove; 16. Through hole; 17. Mounting ring; 18. Connecting piece. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] like Figures 1 to 13As shown, the embodiment of the present invention provides an underwater soil sampling device for water conservancy and geological survey, including a counterweight seat 1, a foot rod 2 fixedly connected to the bottom of the counterweight seat 1, a driving component 3 fixedly provided at the bottom of the counterweight seat 1, a communicating mounting component 5 is provided below the counterweight seat 1, the top of the communicating mounting component 5 is fixedly connected to a mounting frame 4, the driving component 3 controls the communicating mounting component 5 to move up and down through the mounting frame 4, a sampling outer cylinder 6 is fixedly connected to the bottom of the communicating mounting component 5, a sampling inner cylinder component 13 is elastically sleeved inside the sampling outer cylinder 6, a liquid processing component 14 is movably sleeved inside the sampling inner cylinder component 13, an electric push rod 7 is fixedly provided inside the communicating mounting component 5, and the movable end of the electric push rod 7 is inserted through the connecting mounting component 5. It passes through the upper end of the sampling outer cylinder 6 and extends to the interior of the sampling outer cylinder 6, and is fixedly connected to the liquid treatment component 14. A closed combination mechanism is provided inside the sampling outer cylinder 6, and the communicating mounting assembly 5 controls the expansion of the closed combination mechanism inside the sampling outer cylinder 6; the closed combination mechanism includes a No. 1 mouth 10, a reserved annular cavity 11, an elastic airbag ring 12 and an intermediate groove 15. The elastic airbag ring 12 is nested in the inner wall of the sampling outer cylinder 6 and is close to the lower end of the sampling outer cylinder 6. The No. 1 mouth 10 and the reserved annular cavity 11 are respectively opened on the outer side and inner side of the sampling outer cylinder 6. The intermediate groove 15 is opened on the inner wall of the sampling outer cylinder 6. The intermediate groove 15, the reserved annular cavity 11 and the No. 1 mouth 10 form a connecting airway and are connected with the elastic airbag ring 12.

[0035] Example 1: Before use, keep the electric push rod 7 to push the liquid treatment part 14 to move to the bottom of the sampling outer tube 6, install the operating rod on the top of the counterweight seat 1, and drive the entire device to be immersed in water, so that the device is moved in the water to the underwater soil to be sampled, keep the foot rod 2 inserted into the soil, support the operating rod and the device, start the drive assembly 3, the motor 34 in the drive assembly 3 drives the screw rod 33 to rotate, and makes the mounting bracket 4 with the outer thread sleeve and the sliding sleeve move downward, and drives the connecting mounting bracket connected at the bottom. The assembly 5 moves downward, pushing the sampling outer cylinder 6 downward and gradually inserting it into the soil. At the same time, the electric push rod 7 is started, and the liquid treatment component 14 moves upward inside the sampling outer cylinder 6 and the sampling inner cylinder assembly 13. As the sampling outer cylinder 6 is continuously inserted, the soil is squeezed and compressed into the sampling inner cylinder assembly 13. During the synchronous upward movement of the liquid treatment component 14, the soil is gradually filled into the interior of the sampling inner cylinder assembly 13 from bottom to top. When the liquid treatment component 14 moves to the middle ring 132, it continues to move upward. The inner cylinder 131 moves upward along the inner portion of the outer cylinder 6, and the spring 2 133 is compressed. When the inner cylinder 131 moves upward along the inner portion of the outer cylinder 6, the elastic airbag ring 12 of the hidden protection is opened, and the air pump 53 in the communicating mounting assembly 5 is started and supplied with gas. The gas is input into the elastic airbag ring 12 through the middle cavity 52, the No. 1 port 10, the reserved annular cavity 11 and the middle groove 15. As the elastic airbag ring 12 is continuously inflated, the interior of the outer cylinder 6 is closed, so that the outer cylinder 6 and the inner cylinder assembly 131 are in a closed state. The sampling filled soil in the component 13 is blocked from the external soil, and then the driving component 3 drives the mounting frame 4 to move upward, so that the sampling outer cylinder 6 with sampling completed moves upward and is removed from the underwater soil, and the operating lever is pulled upward to complete the device out of water and complete the sampling; after the sampling is completed, the air pump 53 is turned off, and the air in the elastic airbag ring 12 is squeezed out and reset when the elastic airbag ring 12 elastically recovers, and the electric push rod 7 is started and pushes the liquid treatment component 14, and the soil in the sampling inner cylinder component 13 is squeezed out to complete the separation processing after sampling.

[0036] First, by utilizing the cooperation of the connected mounting assembly 5, the closed combination mechanism and the sampling inner cylinder assembly 13, after the sampling outer cylinder 6 is inserted into the underwater soil and the soil filling sampling is completed, the sampling inner cylinder assembly 13 is used to move and open the elastic airbag ring 12 in the closed combination mechanism, and cooperate to guide the filled air to achieve full expansion of the elastic airbag ring 12, and the bottom of the sampling outer cylinder 6 after sampling is completed is partitioned and sealed underwater to prevent the sampling outer cylinder 6 with the bottom open after sampling from being impacted and broken by the flowing water when moving upward underwater. Through timely partitioning and sealing, the structure of the sampled soil is guaranteed to be stable during the underwater soil sampling process to prevent it from being dispersed into the water body. The actual operation is simple and the protection effect is good, which greatly improves the actual underwater soil collection effect.

[0037] In addition, by utilizing the cooperation of the liquid treatment component 14 and the electric push rod 7, the bottom of the sampling outer cylinder 6 is sealed during the underwater movement, thereby preventing a large amount of water from entering the sampling outer cylinder 6 during the underwater movement, thereby preventing the water from affecting the subsequent sampling process. At the same time, during the sampling process, the sampling outer cylinder 6 is continuously inserted into the soil, and the liquid treatment component 14 is synchronously controlled to move upward, and the filling control of the sampling inner cylinder assembly 13 inside the sampling outer cylinder 6 is continuously reserved. At the same time, the movement of the liquid treatment component 14 in the sampling inner cylinder assembly 13 is simulated to simulate the movement effect of the needle piston in the syringe, assisting in the suction and extrusion of the filled soil, guiding the accelerated sampling soil to be quickly filled into the sampling inner cylinder assembly 13, ensuring that it is not affected by the underwater water flow before and during the sampling process, and promoting the filling of the sampled soil. At the same time, the electric push rod 7 is used to drive the movement of the liquid treatment component 14 to control the push of the sampling inner cylinder assembly 13. After the sampling filling is completed, the closure of the elastic airbag ring 12 is released, and the closure processing process is automatically started.

[0038] Example 2: During sampling, as the soil is squeezed into the interior of the sampling inner cylinder assembly 13, the elastic airbag ring 12 seals the interior of the sampling outer cylinder 6, keeping the air pump 53 started and starting the control valve 8. The control valve 8 switches the outlet direction of the intermediate cavity 52, so that the air is input into the bypass assembly 9 through the control valve 8, and the output gas is continuously passed into the second cylinder 92 through the connecting pipe 93, and pushes the U-shaped curved arm 94 to move upward, while stretching the spring 1 95, the air above the middle ring 132 inside the sampling outer cylinder 6 is sucked, and the gas in the liquid treatment component 14 is sucked along the No. 1 hole 134 and the No. 2 hole 147, so that the internal air pressure of the movable cover 142 in the liquid treatment component 14 is reduced. The negative pressure difference causes the movable plug 145 to move upward, and the residual moisture in the soil in the inner cylinder 131 is sucked through the filter plate 144 and the filter cloth 143, thereby achieving partial dehydration of the sampled soil.

[0039] First, by reusing the interconnecting mounting assembly 5, the liquid treatment component 14, and the sampling inner cylinder assembly 13, and cooperating with the bypass assembly 9, after completing soil sampling and bottom sealing, the ventilation direction is switched by controlling the valve 8, guiding the gas input into the bypass assembly 9 and driving the movement of the U-shaped curved arm 94, sucking the upper space inside the sampling outer cylinder 6, and cooperating with the No. 1 hole 134 and the No. 2 hole 147 to realize internal suction of the liquid treatment component 14, and utilizing the pressure difference to realize the movement of the movable plug 145, thereby cooperating with the filter plate 144 and the filter cloth 143 to realize the absorption and separation of the moisture inside the sampled soil into the liquid treatment component 14, reducing the moisture content of the sampled soil, avoiding excessive moisture content affecting the separation after sampling, providing a squeezing and pushing separation effect for the subsequent sampled soil, and improving the subsequent sampling and detection effect.

[0040] Among them, the communicating installation component 5 includes a support frame 51, an intermediate cavity 52 and an air pump 53. The support frame 51 is fixedly connected to the outer side of the upper end of the sampling outer cylinder 6. The intermediate cavity 52 is opened inside the support frame 51, and one end is connected to the No. 1 port 10. The air pump 53 is fixed to the outer side of the support frame 51 through a bracket. The air outlet end of the air pump 53 is connected to the intermediate cavity 52. An air storage part is also provided in the bracket, and the air inlet end of the air pump 53 is connected to the air storage part.

[0041] The sampling outer cylinder 6 is fixed and air is inputted by utilizing the communicating mounting assembly 5 , thereby achieving ventilation and expansion of the elastic airbag ring 12 . The air pump 53 provides air through the air storage portion to ensure smooth ventilation underwater.

[0042] Among them, the sampling inner cylinder assembly 13 includes an inner cylinder 131, an intermediate ring 132, a second spring 133 and a No. 1 hole 134. The inner cylinder 131 is movably sleeved on the inside of the sampling outer cylinder 6. The length of the inner cylinder 131 is less than the upper and lower end lengths of the inner cavity of the sampling outer cylinder 6, and is greater than the upper and lower end lengths of the reserved ring cavity 11. The elastic airbag ring 12 is located on the moving path of the inner cylinder 131. The intermediate ring 132 is fixedly sleeved on the inside of the inner cylinder 131. One end of the second spring 133 is fixed on the inside of the sampling outer cylinder 6, and the other end is fixedly connected to the intermediate ring 132. The No. 1 hole 134 is opened on the front of the intermediate ring 132, and an air hole is provided above the outer surface of the sampling outer cylinder 6.

[0043] The sampling inner cylinder assembly 13 forms a sampling interval in the sampling outer cylinder 6, and at the same time realizes the closed storage of the elastic airbag ring 12, and releases the seal after moving, while isolating the internal space of the sampling outer cylinder 6, and cooperating with the liquid treatment component 14 to establish a low-pressure interval to realize negative pressure suction. Spring 2 133 facilitates elastic reset and time-flexible connection. Hole No. 134 is adapted to hole No. 2 147 to realize conduction after subsequent alignment and connection. The middle ring 132 realizes isolation and cooperates with the liquid treatment component 14 to realize active push.

[0044] Among them, the liquid treatment component 14 includes a connecting arm 141, a movable cover 142, a filter cloth 143, a filter plate 144, a movable plug 145, a spring three 146 and a No. 2 hole 147. The upper end of the connecting arm 141 is fixedly connected to the movable end of the electric push rod 7, and the lower end of the connecting arm 141 is fixedly connected to the movable cover 142. The filter cloth 143 and the filter plate 144 are fixedly sleeved on the inside of the movable cover 142 from bottom to top. The movable plug 145 is movably sleeved on the inside of the movable cover 142. One end of the spring three 146 is fixed on the inside of the movable cover 142, and the other end is fixedly connected to the movable plug 145. The No. 2 hole 147 is opened at the top of the movable cover 142 and is connected to the inside of the movable cover 142. The No. 2 hole 147 corresponds one-to-one with the No. 1 hole 134 A through hole 16 is provided at the top of the sampling outer cylinder 6, and a bypass assembly 9 is fixedly provided at the top of the sampling outer cylinder 6. A control valve 8 is nested inside the intermediate cavity 52, and one end of the bypass assembly 9 is connected to the control valve 8. The bypass assembly 9 includes a No. 1 cylinder 91, a No. 2 cylinder 92, a connecting pipe 93, a U-shaped curved arm 94 and a spring 95. The No. 1 cylinder 91 and the No. 2 cylinder 92 are both fixedly connected to the top of the sampling outer cylinder 6, the No. 1 cylinder 91 is connected to the through hole 16, and the two ends of the U-shaped curved arm 94 are movably connected to the No. 1 cylinder 91 and the No. 2 cylinder 92 respectively. One end of the spring 95 is fixed in the No. 2 cylinder 92, and the other end is fixedly connected to the U-shaped curved arm 94. One end of the connecting pipe 93 is fixedly connected to the side of the No. 2 cylinder 92, and the other end is fixedly connected to the control valve 8.

[0045] The liquid treatment component 14 closes the sampling outer cylinder 6 before sampling to prevent underwater water filling, and moves during the sampling process to assist suction and promote soil entry. After sampling is completed, it cooperates with the mobile suction of the bypass component 9 to achieve moisture separation in the sampled soil and reduce the water content. Spring three 146 facilitates elastic reset, the movable plug 145 realizes suction, the filter plate 144 is provided with filter holes, and the filter cloth 143 allows water to be absorbed and penetrated. The bypass component 9 cooperates with the control valve 8 to switch the ventilation direction, and the spring one 95 elastically resets. Both ends of the U-shaped curved arm 94 are provided with sealing rings to maintain dynamic sealing.

[0046] Among them, the driving assembly 3 includes a mounting plate 31, a clamping plate 32, a screw rod 33 and a motor 34. The mounting plate 31 is fixedly sleeved inside the counterweight seat 1, the clamping plate 32 is fixedly connected to the bottom surface of the mounting plate 31, the motor 34 is fixedly mounted on the top of the mounting plate 31, the screw rod 33 is rotatably sleeved in the mounting plate 31, and is fixedly connected to the output shaft of the motor 34. The top of the mounting frame 4 is threadedly sleeved with the screw rod 33, and a slide groove is provided on the outer side of the mounting frame 4, and the clamping plate 32 is slidably sleeved in the slide groove.

[0047] The driving assembly 3 provides driving force to enable the sampling outer cylinder 6 to be actively inserted into the soil to complete the squeezing and pushing sampling.

[0048] Among them, the top of the counterweight seat 1 is fixedly connected with a mounting ring 17 , the inner wall of the mounting ring 17 is provided with threads, and the top of the counterweight seat 1 is fixedly connected with a connecting piece 18 , which is located in the mounting ring 17 .

[0049] Example 3: A steel wire rope is used to connect the connector 18. For deep water, the device can be lowered into the water body through a winding mechanism to take soil samples.

[0050] The working principle and usage process of the present invention are as follows: before use, keep the electric push rod 7 pushing the liquid treatment component 14 to move to the level of the lower end of the sampling outer cylinder 6, install the operating rod on the top of the counterweight seat 1, and drive the entire device to be immersed in water, so that the device is moved in the water to the underwater soil to be sampled, keep the foot rod 2 inserted into the soil, support the operating rod and the device, start the drive assembly 3, the motor 34 in the drive assembly 3 drives the screw rod 33 to rotate, and makes the mounting frame 4 with the outer thread sleeve and the sliding sleeve move downward, and drives the connected mounting assembly 5 connected to its bottom to move downward, while pushing the sampling outer cylinder 6 to move downward and gradually insert it deeper into the soil. At the same time, start the electric push rod 7 and bring the liquid treatment component 14 between the sampling outer cylinder 6 and the sampling inner cylinder. The interior of the cylinder assembly 13 moves upward, and as the sampling outer cylinder 6 is continuously inserted, the soil is squeezed and compressed into the sampling inner cylinder assembly 13, and in the process of the liquid treatment component 14 moving upward synchronously, the soil is gradually filled into the interior of the sampling inner cylinder assembly 13 from bottom to top. When the liquid treatment component 14 moves to the middle ring 132, it continues to move upward and pushes the sampling inner cylinder assembly 13 to move further upward in the sampling outer cylinder 6, and compresses the spring 2 133. When the inner cylinder 131 moves upward along the inside of the sampling outer cylinder 6, the hidden protective elastic airbag ring 12 is opened, and the air pump 53 in the connected installation component 5 is started and supplied with gas. The gas is input into the elastic airbag ring 12 through the middle cavity 52, the No. 1 port 10, the reserved ring cavity 11 and the middle groove 15. As the elastic airbag ring 12 is not The air is continuously inflated to seal the interior of the sampling outer cylinder 6, so that the sampling soil filled in the sampling outer cylinder 6 and the sampling inner cylinder assembly 13 is blocked from the external soil. Subsequently, the driving assembly 3 drives the mounting frame 4 to move upward, so that the sampling outer cylinder 6 with sampling is moved upward and removed from the underwater soil. The operating lever is pulled upward to complete the device out of the water and the sampling is completed. After the sampling is completed, the air pump 53 is turned off, and the air in the elastic airbag ring 12 is reversely squeezed out and reset when the elastic airbag ring 12 elastically recovers. The electric push rod 7 is started and pushes the liquid treatment component 14, and the soil in the sampling inner cylinder assembly 13 is squeezed out to complete the separation process after sampling. During the sampling period, as the soil is squeezed into the interior of the sampling inner cylinder assembly 13, the elastic airbag ring 12 seals the interior of the sampling outer cylinder 6. Keep the air pump 53 started and start the control valve 8. The control valve 8 switches the outlet direction of the intermediate cavity 52, so that the air is input into the bypass assembly 9 through the control valve 8, and the output gas is continuously introduced into the No. 2 cylinder 92 through the connecting pipe 93, and pushes the U-shaped curved arm 94 to move upward. While stretching the spring 1 95, the air above the middle ring 132 inside the sampling outer cylinder 6 is sucked, and the gas in the liquid treatment component 14 is sucked along the No. 1 hole 134 and the No. 2 hole 147, so that the internal air pressure of the movable cover 142 in the liquid treatment component 14 is reduced. The negative pressure difference causes the movable plug 145 to move upward, and the residual moisture in the soil in the inner cylinder 131 is sucked through the filter plate 144 and the filter cloth 143, thereby realizing partial dehydration of the sampled soil.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An underwater soil sampling device for water conservancy and geological survey, comprising a counterweight seat (1), a foot rod (2) fixedly connected to the bottom of the counterweight seat (1), characterized in that: The bottom of the counterweight seat (1) is fixedly provided with a driving assembly (3), and a communicating mounting assembly (5) is provided below the counterweight seat (1). The top of the communicating mounting assembly (5) is fixedly connected to a mounting frame (4). The driving assembly (3) controls the communicating mounting assembly (5) to move up and down through the mounting frame (4). The bottom of the communicating mounting assembly (5) is fixedly connected to a sampling outer cylinder (6). The interior of the sampling outer cylinder (6) is elastically sleeved with a sampling inner cylinder assembly (13). The interior of the sampling inner cylinder assembly (13) is movably sleeved with a liquid treatment component (14). An electric push rod (7) is fixedly provided inside the communicating mounting assembly (5). The movable end of the electric push rod (7) passes through the upper end of the sampling outer cylinder (6) and extends to the interior of the sampling outer cylinder (6) and is fixedly connected to the liquid treatment component (14). A closed combination mechanism is provided inside the sampling outer cylinder (6). The communicating mounting assembly (5) controls the closed combination mechanism to expand inside the sampling outer cylinder (6). The closed combination mechanism comprises a No. 1 port (10), a reserved annular cavity (11), an elastic airbag ring (12) and an intermediate groove (15); the elastic airbag ring (12) is nested in the inner wall of the sampling outer cylinder (6) and close to the lower end of the sampling outer cylinder (6); the No. 1 port (10) and the reserved annular cavity (11) are respectively correspondingly opened on the outer side and the inner side of the sampling outer cylinder (6); the intermediate groove (15) is opened on the inner wall of the sampling outer cylinder (6); the intermediate groove (15), the reserved annular cavity (11) and the No. 1 port (10) form a communicating airway and are communicated with the elastic airbag ring (12).

2. The underwater soil sampling equipment for water conservancy and geological survey according to claim 1, characterized in that: The communicating mounting assembly (5) comprises a support frame (51), an intermediate cavity (52) and an air pump (53); the support frame (51) is fixedly connected to the outer side of the upper end of the sampling outer cylinder (6); the intermediate cavity (52) is opened inside the support frame (51), and one end is communicated with the No. 1 port (10); the air pump (53) is fixed to the outer side of the support frame (51) through a bracket; the air outlet end of the air pump (53) is communicated with the intermediate cavity (52); an air storage portion is further provided in the bracket; the air inlet end of the air pump (53) is communicated with the air storage portion.

3. The underwater soil sampling equipment for water conservancy and geological survey according to claim 2, characterized in that: The sampling inner cylinder assembly (13) comprises an inner cylinder (131), an intermediate ring (132), a second spring (133) and a number one hole (134). The inner cylinder (131) is movably sleeved inside the sampling outer cylinder (6). The length of the inner cylinder (131) is less than the length of the upper and lower ends of the inner cavity of the sampling outer cylinder (6) and is greater than the length of the upper and lower ends of the reserved ring cavity (11). The elastic airbag ring (12) is located on the moving path of the inner cylinder (131). The intermediate ring (132) is fixedly sleeved inside the inner cylinder (131). One end of the second spring (133) is fixed inside the sampling outer cylinder (6), and the other end is fixedly connected to the intermediate ring (132). The number one hole (134) is opened on the front of the intermediate ring (132). An air hole is provided above the outer surface of the sampling outer cylinder (6).

4. The underwater soil sampling equipment for water conservancy and geological survey according to claim 3, characterized in that: The liquid treatment component (14) includes a connecting arm (141), a movable cover (142), a filter cloth (143), a filter plate (144), a movable plug (145), a spring three (146) and a second hole (147). The upper end of the connecting arm (141) is fixedly connected to the movable end of the electric push rod (7), the lower end of the connecting arm (141) is fixedly connected to the movable cover (142), and the filter cloth (143) and the filter plate (144) are arranged from bottom to top in a fixed manner. The second fixed sleeve is connected to the inside of the movable cover (142), the movable plug (145) is movably connected to the inside of the movable cover (142), one end of the spring three (146) is fixed to the inside of the movable cover (142), and the other end is fixedly connected to the movable plug (145), the second hole (147) is opened at the top of the movable cover (142) and is connected to the inside of the movable cover (142), and the second hole (147) corresponds to the first hole (134) one by one.

5. The underwater soil sampling equipment for water conservancy and geological survey according to claim 2, characterized in that: A through hole (16) is provided on the top of the sampling outer cylinder (6), a bypass assembly (9) is fixedly provided on the top of the sampling outer cylinder (6), a control valve (8) is nested inside the intermediate cavity (52), and one end of the bypass assembly (9) is communicated with the control valve (8).

6. The underwater soil sampling equipment for water conservancy and geological survey according to claim 5, characterized in that: The bypass assembly (9) includes a No. 1 cylinder (91), a No. 2 cylinder (92), a connecting pipe (93), a U-shaped curved arm (94) and a spring (95). The No. 1 cylinder (91) and the No. 2 cylinder (92) are both fixedly connected to the top of the sampling outer cylinder (6). The No. 1 cylinder (91) is connected to the through hole (16). The two ends of the U-shaped curved arm (94) are movably connected to the No. 1 cylinder (91) and the No. 2 cylinder (92). One end of the spring (95) is fixed in the No. 2 cylinder (92), and the other end is fixedly connected to the U-shaped curved arm (94). One end of the connecting pipe (93) is fixedly connected to the side of the No. 2 cylinder (92), and the other end is fixedly connected to the control valve (8).

7. The underwater soil sampling equipment for water conservancy and geological survey according to claim 1, characterized in that: The driving assembly (3) comprises a mounting plate (31), a clamping plate (32), a screw rod (33) and a motor (34); the mounting plate (31) is fixedly sleeved inside the counterweight seat (1); the clamping plate (32) is fixedly connected to the bottom surface of the mounting plate (31); the motor (34) is fixedly mounted on the top of the mounting plate (31); the screw rod (33) is rotatably sleeved in the mounting plate (31) and fixedly connected to the output shaft of the motor (34).

8. The underwater soil sampling equipment for water conservancy and geological survey according to claim 7, characterized in that: The top of the mounting frame (4) is threadedly sleeved with the screw rod (33), and a sliding groove is provided on the outer side surface of the mounting frame (4), and the clamping plate (32) is slidably sleeved in the sliding groove.

9. The underwater soil sampling equipment for water conservancy and geological survey according to claim 1, characterized in that: The top of the counterweight seat (1) is fixedly connected to a mounting ring (17), the inner wall of the mounting ring (17) is provided with threads, and the top of the counterweight seat (1) is fixedly connected to a connecting piece (18), and the connecting piece (18) is located in the mounting ring (17).

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