Layered sampling device for underground water monitoring

Abstract

The invention relates to the technical field of underground water stratified sampling, and discloses an underground water monitoring stratified sampling device which comprises a supporting table, a first motor is fixedly connected to the lower surface of the supporting table, a crank is fixedly arranged at the output end of the first motor, and a limiting groove is formed in the supporting table; and the outer wall of the crank is rotationally connected with the inner wall of the limiting groove, the upper surface of the crank is rotationally connected with a positioning block, the outer wall of the positioning block is slidably connected with a connecting frame, the outer walls of the two sides of the connecting frame are fixedly connected with moving blocks, and the lower surfaces of the moving blocks are slidably connected to the upper surface of the supporting table. By starting a first motor, the output end of the first motor drives a crank to rotate, promotes a positioning block to slide up and down on the inner wall of a connecting frame, drives a moving block to slide back and forth, enables a push plate to contact with the outer wall of a sampling box, rebounds on the inner wall of a frame plate, drives a transverse plate of a T-shaped sliding frame to slide and enables the sampling box to vibrate, thereby promoting particles in underground water to be separated from a filter screen and improving the quality of sampled water.

Description

Technical Field

[0001] The present invention relates to the technical field of underground water stratified sampling, and particularly to a stratified sampling device for groundwater monitoring. Background Art

[0002] Groundwater is an important resource that supports human life, industrial production, and ecological systems. However, with the current economic development, problems such as industrial wastewater discharge, agricultural non-point source pollution, and urban pollutant infiltration have emerged, resulting in continuous changes in its water quality and quantity. Stratified sampling of urban pipelines is the key to accurately grasping the groundwater quality. By precisely analyzing these water samples, the quality status of groundwater can be comprehensively and finely evaluated, providing extremely important scientific basis for a series of work such as groundwater pollution prevention and water resource management. However, the water quality characteristics of groundwater at different depths vary greatly.

[0003] However, in current technologies, sampling devices usually directly sample through samplers. When facing groundwater containing particulate impurities, viscous substances, or flocs, these substances are extremely likely to adhere to and accumulate at the filter screen part, thereby blocking the sampling channel and hindering the normal collection of water samples. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a stratified sampling device for groundwater monitoring, which solves the problem that impurities in water are easily attached to and accumulate at the filter screen part, thereby causing blockage of the sampling channel.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A stratified sampling device for groundwater monitoring includes a support platform. The lower surface of the support platform is fixedly connected with a first motor, and the output end of the first motor is fixedly provided with a crank. A limiting groove is opened inside the support platform, and the outer wall of the crank is rotationally connected with the inner wall of the limiting groove. The upper surface of the crank is rotationally connected with a positioning block, and the outer wall of the positioning block is slidably connected with a connecting frame. Both outer walls of the connecting frame are fixedly connected with moving blocks, and the lower surfaces of the moving blocks are slidably connected with the upper surface of the support platform. The outer wall of the moving block is fixedly connected with a frame plate, and a spring is fixedly connected to the inner wall of the frame plate. The outer wall of the spring is fixedly connected with a push plate, and a sampling component is arranged inside the support platform.

[0006] Preferably, the sampling component includes a sampling box. The outer wall of the sampling box is arranged inside the support platform, the outer wall of the push plate is arranged on the outer wall of the sampling box. An isolation block is fixedly connected to the inner wall of the sampling box, a one-way valve is arranged inside the sampling box, a sampling port is opened inside the sampling box, a filter screen is arranged on the inner wall of the sampling port, a fixed frame is fixedly connected to the outer wall of the sampling box, and a baffle is slidably connected to the inner wall of the fixed frame. The outer wall of the baffle is arranged on the outer wall of the sampling port.

[0007] Preferably, a second motor is fixedly connected to the outer wall of the support platform. The output end of the second motor is fixedly provided with a transmission rod, and a worm is fixedly connected to the outer wall of the transmission rod.

[0008] Preferably, a support plate is fixedly connected to the inner wall of the support platform. A worm gear is rotatably connected to the upper surface of the support plate, and the outer wall of the worm is meshed with the outer wall of the worm gear.

[0009] Preferably, a lead screw is fixedly connected to the inside of the worm gear. The outer wall of the lead screw is rotatably connected to the inside of the support platform. A guide frame is fixedly connected to the upper surface of the support platform, and the outer wall of the lead screw is rotatably connected to the inside of the guide frame.

[0010] Preferably, a T-shaped sliding frame is threadedly connected to the outer wall of the lead screw, and the outer wall of the T-shaped sliding frame is slidably connected to the inner wall of the guide frame.

[0011] Preferably, an electric push rod is fixedly connected to the inner wall of the T-shaped sliding frame. The output end of the electric push rod is fixedly provided with a connecting plate, and the lower surface of the connecting plate is fixedly connected to the upper surface of the baffle.

[0012] Preferably, a hydraulic cylinder is fixedly connected to the outer wall of the support platform. The output end of the hydraulic cylinder is fixedly provided with a U-shaped frame. The upper surface of the U-shaped frame is slidably connected to the lower surface of the support plate, and movable columns are fixedly connected to the outer walls on both sides of the U-shaped frame.

[0013] Preferably, a sliding column is slidably connected to the inside of the support plate. The bottom end of the sliding column is fixedly connected to a lifting frame, and rollers are rotatably connected to the inner wall of the lifting frame.

[0014] Preferably, a moving plate is fixedly connected to the upper surface of the lifting frame. An inclined groove is formed in the inside of the moving plate, and the outer wall of the movable column is slidably connected to the inner wall of the inclined groove.

[0015] Working principle: When the device is needed, first start the hydraulic cylinder. The hydraulic cylinder drives the U-shaped frame to slide on the lower surface of the support plate, so as to drive the movable column to slide on the inner wall of the inclined groove, thereby driving the moving plate to move downward. The lifting frame moves downward synchronously through the sliding column until the roller contacts the ground and the lower surface of the support platform is separated from the ground of the support platform. Then, by pushing the whole device to move, the detection position of the underground pipeline can be flexibly positioned. Then, by starting the hydraulic cylinder to drive the roller to leave the ground and making the lower surface of the support platform contact the ground, the stability of the device during sampling can be achieved.

[0016] Then, turn on the second motor. The output end of the second motor can drive the transmission rod to rotate, thereby driving the worm gears on the outer walls at both ends to rotate synchronously. Through meshing connection, the worm wheels are driven to rotate on the upper surface of the support plate, and then the lead screw drives the inside of the guide frame to rotate. The lead screw drives the T-shaped carriage to slide up and down along the inner wall of the guide frame through the reverse force generated by the threaded connection, driving the sampling box to slide into the positioned underground pipeline to achieve stratified sampling. Then, turn on the electric push rod to push the connecting plate to slide outwards, thereby driving the baffle to open the sampling port and sample the samples at different water depths corresponding to the isolation blocks.

[0017] During the sampling process, turn on the first motor. The output end of the first motor can drive the crank to rotate on the inner wall of the limit groove, thereby driving the positioning block to slide up and down on the inner wall of the connecting frame, and then driving the moving block to slide reciprocally on the upper surface of the support platform, driving the push plate to contact the outer wall of the sampling box. The spring rebounds on the inner wall of the support plate to drive the cross plate of the T-shaped carriage to slide, causing the sampling box to vibrate. Thus, the particles in the groundwater can be separated from the filter screen through vibration, improving the quality of the sampled water and making the water flow more easily, accelerating its entry into the sampling box. After sampling, turn on the electric push rod to drive the baffle to close the sampling port, and then discharge the samples of each layer of sampling outwards through the one-way valve.

[0018] The present invention provides a stratified sampling device for groundwater monitoring. It has the following beneficial effects:

[0019] 1. In the present invention, by turning on the first motor, its output end drives the crank to rotate, prompting the positioning block to slide up and down on the inner wall of the connecting frame, driving the moving block to slide reciprocally, making the push plate contact the outer wall of the sampling box, and the spring rebounds on the inner wall of the support plate to drive the cross plate of the T-shaped carriage to slide, causing the sampling box to vibrate, thereby prompting the particles in the groundwater to separate from the filter screen and improving the quality of the sampled water.

[0020] 2. In the present invention, by turning on the second motor, its output end drives the transmission rod to rotate, making the worm gears on the outer walls at both ends rotate synchronously, and driving the lead screw to rotate through the worm wheel. The lead screw drives the T-shaped carriage to slide up and down by virtue of the reverse force of the threaded connection, enabling the sampling box to slide into the underground pipeline to achieve stratified sampling.

[0021] 3. In the present invention, by turning on the hydraulic cylinder, the U-shaped frame is pushed to slide on the lower surface of the support plate, driving the movable column to slide along the inner wall of the inclined groove, prompting the moving plate, the sliding column, and the lifting frame to move down synchronously until the rollers touch the ground and the support platform is separated from the ground. The pushing device can flexibly position the detection position of the underground pipeline. Then, turn on the hydraulic cylinder again to lift the rollers off the ground and make the support platform contact the ground to ensure the stability of the device during sampling. Description of the Drawings

[0022] Figure 1Stereogram of a layered sampling device for groundwater monitoring according to the present invention;

[0023] Figure 2 Partial structural schematic diagram of the sampling box of a layered sampling device for groundwater monitoring according to the present invention;

[0024] Figure 3 Partial structural schematic diagram of the moving block of a layered sampling device for groundwater monitoring according to the present invention;

[0025] Figure 4 Partial structural schematic diagram of the sampling box of a layered sampling device for groundwater monitoring according to the present invention;

[0026] Figure 5 Partial structural schematic diagram of the guide frame of a layered sampling device for groundwater monitoring according to the present invention;

[0027] Figure 6 Partial structural schematic diagram of the moving plate of a layered sampling device for groundwater monitoring according to the present invention.

[0028] Wherein, 1, support platform; 2, first motor; 3, limit groove; 4, crank; 5, positioning block; 6, connecting frame; 7, moving block; 8, frame plate; 9, spring; 10, push plate; 11, sampling box; 12, isolation block; 13, one-way valve; 14, fixed frame; 15, baffle; 16, sampling port; 17, second motor; 18, transmission rod; 19, worm; 20, support plate; 21, worm gear; 22, lead screw; 23, guide frame; 24, T-shaped sliding frame; 25, electric push rod; 26, connecting plate; 27, hydraulic cylinder; 28, U-shaped frame; 29, movable column; 30, sliding column; 31, lifting frame; 32, moving plate; 33, inclined groove; 34, roller. Detailed implementation manner

[0029] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to the attached Figure 1 - attached Figure 4, an embodiment of the present invention provides a layered sampling device for groundwater monitoring, including a support platform 1. A first motor 2 is fixedly connected to the lower surface of the support platform 1. The output end of the first motor 2 is fixedly provided with a crank 4. A limiting groove 3 is opened inside the support platform 1. The outer wall of the crank 4 is rotatably connected to the inner wall of the limiting groove 3. The upper surface of the crank 4 is rotatably connected to a positioning block 5. The outer wall of the positioning block 5 is slidably connected to the inner wall of a connecting frame 6. Both outer walls of the connecting frame 6 are fixedly connected with moving blocks 7. The lower surface of the moving blocks 7 is slidably connected to the upper surface of the support platform 1. The outer wall of the moving blocks 7 is fixedly connected with a frame plate 8. A spring 9 is fixedly connected to the inner wall of the frame plate 8. The outer wall of the spring 9 is fixedly connected with a push plate 10. A sampling assembly is arranged inside the support platform 1; the sampling assembly includes a sampling box 11. The outer wall of the sampling box 11 is arranged inside the support platform 1. The outer wall of the push plate 10 is arranged on the outer wall of the sampling box 11. An isolation block 12 is fixedly connected to the inner wall of the sampling box 11. A one-way valve 13 is arranged inside the sampling box 11. A sampling port 16 is opened inside the sampling box 11. A filter screen is arranged on the inner wall of the sampling port 16. A fixing frame 14 is fixedly connected to the outer wall of the sampling box 11. A baffle 15 is slidably connected to the inner wall of the fixing frame 14. The outer wall of the baffle 15 is arranged on the outer wall of the sampling port 16.

[0031] Specifically, the support platform 1 has a fixed support effect on the first motor 2. When the first motor 2 is turned on, its output end can drive the crank 4 to rotate. The limiting groove 3 can provide a rotation space for the crank 4, and the crank 4 can drive the positioning block 5 to slide up and down inside the inner wall of the connecting frame 6. The connecting frame 6 has a fixed support effect on the moving blocks 7, so as to drive the moving blocks 7 to slide on the upper surface of the support platform 1. The support platform 1 can make the sliding position and position guidance of the moving blocks 7, and the moving blocks 7 have a fixed effect on the frame plate 8, and then can drive the frame plate 8 to rotate synchronously, so as to drive the push plate 10 to contact the outer walls on both sides of the sampling box 11 through the spring 9. Then, through the rebound of the spring 9, the sampling box 11 can be driven to vibrate, realizing that when sampling, the water is easier to flow, thereby accelerating the speed of entering the sampling instrument, improving the sampling efficiency, and at the same time, the impurities on the filter of the first motor 2 can be vibrated off, improving the sampling quality and avoiding the effect of blockage. Moreover, a plurality of isolation blocks 12 are fixedly connected to the inside of the sampling box 11. Through the isolation blocks 12, the inside of the sampling box 11 can be layered to meet the sampling of water at different depths of the pipeline. At the same time, through the one-way valve 13, the sampled water can be discharged for the next step of detection work. The baffle 15 can slide inside the inner wall of the fixing frame 14 to seal or open the sampling port 16.

[0032] Refer to the appendix Figure 1 、appendix Figure 4 and appendix Figure 5, a second motor 17 is fixedly connected to the outer wall of the support platform 1. The output end of the second motor 17 is fixedly provided with a transmission rod 18, and a worm 19 is fixedly connected to the outer wall of the transmission rod 18. A support plate 20 is fixedly connected to the inner wall of the support platform 1. A worm gear 21 is rotatably connected to the upper surface of the support plate 20, and the outer wall of the worm 19 is meshed and connected to the outer wall of the worm gear 21.

[0033] Specifically, the support platform 1 has a fixed support effect on the second motor 17. When the second motor 17 is turned on, its output end can drive the transmission rod 18 to rotate. At the same time, the support platform 1 can support the rotation position of the transmission rod 18, and the transmission rod 18 has a fixed support effect on the worm 19. The support platform 1 has a fixed support effect on the support plate 20, and the support plate 20 can support the rotation position of the worm gear 21. When the worm 19 rotates, it can drive the worm gear 21 to rotate through meshing connection.

[0034] Refer to the appendix Figure 5 , a lead screw 22 is fixedly connected to the inside of the worm gear 21. The outer wall of the lead screw 22 is rotatably connected to the inside of the support platform 1. A guide frame 23 is fixedly connected to the upper surface of the support platform 1, and the outer wall of the lead screw 22 is rotatably connected to the inside of the guide frame 23. A T-shaped slide 24 is threadedly connected to the outer wall of the lead screw 22, and the outer wall of the T-shaped slide 24 is slidably connected to the inner wall of the guide frame 23. An electric push rod 25 is fixedly connected to the inner wall of the T-shaped slide 24. The output end of the electric push rod 25 is fixedly provided with a connecting plate 26, and the lower surface of the connecting plate 26 is fixedly connected to the upper surface of the baffle 15.

[0035] Specifically, the worm gear 21 has a fixed support effect on the lead screw 22. When the worm gear 21 rotates, it can synchronously drive the lead screw 22 to rotate. The support platform 1 can support the rotation position of the lead screw 22. At the same time, the support platform 1 has a fixed support effect on the guide frame 23. When the lead screw 22 rotates, it can drive the T-shaped slide 24 to move up and down along the inner wall of the guide frame 23 through the reverse force generated by the thread. The T-shaped slide 24 includes a cross plate, and the cross plate can slide left and right to ensure the space for the sampling box 11 to vibrate. By adjusting the height of the T-shaped slide 24, the sampling box 11 can be driven to slide into the pipeline for sampling work. The T-shaped slide 24 has a fixed support effect on the electric push rod 25. When the electric push rod 25 is turned on, it can drive the connecting plate 26 to move by pushing or pulling, so as to drive the baffle 15 to open or close the sampling port 16. Sampling is carried out when it is open, and cross-mixing of each layer of samples can be avoided when it is closed during the upward movement of the sampling box 11.

[0036] Refer to the appendix Figure 1 、appendix Figure 5 and appendix Figure 6, a hydraulic cylinder 27 is fixedly connected to the outer wall of the support platform 1, the output end of the hydraulic cylinder 27 is fixedly provided with a U-shaped frame 28, the upper surface of the U-shaped frame 28 is slidably connected to the lower surface of the support plate 20, and movable columns 29 are fixedly connected to the outer walls on both sides of the U-shaped frame 28; a sliding column 30 is slidably connected inside the support plate 20, the bottom end of the sliding column 30 is fixedly connected to a lifting frame 31, and a roller 34 is rotatably connected to the inner wall of the lifting frame 31; a moving plate 32 is fixedly connected to the upper surface of the lifting frame 31, an inclined groove 33 is formed inside the moving plate 32, and the outer wall of the movable column 29 is slidably connected to the inner wall of the inclined groove 33.

[0037] Specifically, the support platform 1 has a fixed support function for the hydraulic cylinder 27. When the hydraulic cylinder 27 is opened, its output end can pull or push the U-shaped frame 28 to move, and the support plate 20 can support the sliding position of the U-shaped frame 28. At the same time, the U-shaped frame 28 has a fixed support function for the movable column 29, and the support plate 20 can support the sliding position of the sliding column 30. Moreover, the support plate 20 has a fixed support function for the lifting frame 31, and the lifting frame 31 can support the position of the roller 34. When the roller 34 contacts the ground, the whole device can be moved by pushing to position and support the pipeline. At the same time, the lifting frame 31 has a fixed support function for the moving plate 32. When the movable column 29 moves, it can drive the moving plate 32 to move up and down through the inclined groove 33, so as to realize the extension and contraction of the roller 34, ensuring the flexibility of the device movement. And when it contracts, the support platform 1 contacts the ground to ensure the stability of the device during sampling.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stratified sampling device for groundwater monitoring, comprising a support platform (1), characterized in that: The lower surface of the support platform (1) is fixedly connected to a first motor (2), an output end of the first motor (2) is fixedly provided with a crank (4), a limiting groove (3) is provided inside the support platform (1), an outer wall of the crank (4) is rotatably connected to the inner wall of the limiting groove (3), an upper surface of the crank (4) is rotatably connected to a positioning block (5), an outer wall of the positioning block (5) is slidably connected to a connecting frame (6), both sides of the outer walls of the connecting frame (6) are fixedly connected to moving blocks (7), the lower surface of the moving block (7) is slidably connected to the upper surface of the support platform (1), the outer wall of the moving block (7) is fixedly connected to a frame plate (8), the inner wall of the frame plate (8) is fixedly connected to a spring (9), the outer wall of the spring (9) is fixedly connected to a push plate (10), and a sampling component is provided on the inner wall of the support platform (1).

2. A stratified sampling device for groundwater monitoring according to claim 1, characterized in that: The sampling assembly comprises a sampling box (11), the outer wall of the sampling box (11) is arranged on the inner wall of the support platform (1), the outer wall of the push plate (10) is arranged on the outer wall of the sampling box (11), the inner wall of the sampling box (11) is fixedly connected with an isolation block (12), a one-way valve (13) is arranged inside the sampling box (11), a sampling port (16) is opened inside the sampling box (11), a filter screen is arranged on the inner wall of the sampling port (16), the outer wall of the sampling box (11) is fixedly connected with a fixing frame (14), the inner wall of the fixing frame (14) is slidably connected with a baffle (15), and the outer wall of the baffle (15) is arranged on the outer wall of the sampling port (16).

3. A stratified sampling device for groundwater monitoring according to claim 1, characterized in that: A second motor (17) is fixedly connected to the outer wall of the support platform (1), a transmission rod (18) is fixedly provided at the output end of the second motor (17), and a worm (19) is fixedly connected to the outer wall of the transmission rod (18).

4. A stratified sampling device for groundwater monitoring according to claim 3, characterized in that: The inner wall of the support platform (1) is fixedly connected to a support plate (20), the upper surface of the support plate (20) is rotatably connected to a worm wheel (21), and the outer wall of the worm (19) is meshingly connected to the outer wall of the worm wheel (21).

5. A stratified sampling device for groundwater monitoring according to claim 4, characterized in that: A screw rod (22) is fixedly connected to the inside of the worm wheel (21), and the outer wall of the screw rod (22) is rotatably connected to the inside of the support platform (1). A guide frame (23) is fixedly connected to the upper surface of the support platform (1), and the outer wall of the screw rod (22) is rotatably connected to the inside of the guide frame (23).

6. A stratified sampling device for groundwater monitoring according to claim 5, characterized in that: The outer wall of the screw rod (22) is threadedly connected to a T-shaped slide (24), and the outer wall of the T-shaped slide (24) is slidably connected to the inner wall of the guide frame (23).

7. A stratified sampling device for groundwater monitoring according to claim 6, characterized in that: An electric push rod (25) is fixedly connected to the inner wall of the T-shaped slide (24), a connecting plate (26) is fixedly provided at the output end of the electric push rod (25), and the lower surface of the connecting plate (26) is fixedly connected to the upper surface of the baffle (15).

8. A stratified sampling device for groundwater monitoring according to claim 1, characterized in that: The outer wall of the support platform (1) is fixedly connected to a hydraulic cylinder (27), the output end of the hydraulic cylinder (27) is fixedly provided with a U-shaped frame (28), the upper surface of the U-shaped frame (28) is slidably connected to the lower surface of the support plate (20), and the outer walls on both sides of the U-shaped frame (28) are fixedly connected to movable columns (29).

9. A stratified sampling device for groundwater monitoring according to claim 8, characterized in that: The support plate (20) is slidably connected to a slide column (30), the bottom end of the slide column (30) is fixedly connected to a lifting frame (31), and the inner wall of the lifting frame (31) is rotatably connected to a roller (34).

10. A stratified sampling device for groundwater monitoring according to claim 9, characterized in that: A movable plate (32) is fixedly connected to the upper surface of the lifting frame (31), an inclined groove (33) is provided inside the movable plate (32), and the outer wall of the movable column (29) is slidably connected to the inner wall of the inclined groove (33).

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