Water sampling device for water conservancy engineering geological surveying and mapping

Abstract

This invention relates to the field of water resource sampling and provides a water sampling device for geological surveying in water conservancy engineering. The device includes a connecting base with multiple support rods rotatably connected to it. An electric telescopic rod is fixedly mounted in the middle of the connecting base, and a fixed disk is fixedly connected to the telescopic end of the electric telescopic rod. A sampling tube is threadedly connected to the middle of the fixed disk, and a drill bit assembly is connected to the bottom of the sampling tube. An outer sleeve is rotatably connected to the outside of the sampling tube, and a spring is installed between the outer sleeve and the fixed disk. A thrust assembly capable of pushing the outer sleeve to reciprocate is mounted on the fixed disk. In this invention, activating the thrust assembly causes the outer sleeve to reciprocate, causing it to drive all the soil fragments to move in a circular motion around the sampling tube. All the sampling tubes break up and fragment the soil and rock layers near the outer sleeve, thereby preventing the formation of a dense barrier of soil and rock near the outer sleeve.

Description

Technical Field

[0001] This invention belongs to the field of water resource sampling, and in particular relates to a water sampling device for geological surveying of water conservancy projects. Background Technology

[0002] Groundwater refers to water that exists in the pores of rocks below the ground surface; in a narrower sense, it refers to water in saturated aquifers below the groundwater level. In the national standard "Hydrogeological Terminology," groundwater refers to gravity water in various forms buried below the earth's surface. A water sampler is a device used to collect water samples.

[0003] Existing water sampling devices typically drill into the underground soil layer using a drilling device, and then the groundwater flows into a pipe extending into the ground to collect the groundwater. However, existing water sampling devices often require multiple samplings when sampling groundwater at different depths on the ground, which is time-consuming and labor-intensive.

[0004] In order to improve efficiency, some sampling devices have multiple sampling holes opened along the height direction on the side wall of the sampling tube for sampling. At this time, due to the squeezing pressure of the drilling device, the soil and rock near the sampling tube are prone to form a dense barrier, resulting in a low flow rate of groundwater into the sampling tube, which affects the sampling rate; or some external soil layers accumulate downwards during sampling, which makes the sampling holes near the bottom easy to block, resulting in poor sampling effect. Summary of the Invention

[0005] The purpose of this invention is to provide a water sampling device for geological surveying of water conservancy projects, which aims to solve the technical problem that existing water resource sampling devices have poor sampling effects when sampling groundwater at different depths on the bottom surface.

[0006] The present invention is implemented as follows: a water sampling device for geological mapping of water conservancy projects includes a connecting seat, a plurality of support rods rotatably connected to the connecting seat, an electric telescopic rod fixedly installed in the middle of the connecting seat, a fixed plate fixedly connected to the telescopic end of the electric telescopic rod, a sampling tube threadedly connected to the middle of the fixed plate, and a drill bit assembly connected to the bottom of the sampling tube. The drill bit assembly includes a drive motor and a drill bit, and the drill bit is driven to rotate by the drive motor.

[0007] The sampling tube is rotatably connected to an outer sleeve. A spring is installed between the outer sleeve and the fixed plate. The fixed plate is equipped with a thrust assembly that can push the outer sleeve to reciprocate. The outer sleeve is provided with movable baffles at intervals along its length. The movable baffles can extend and retract. Each movable baffle has a water inlet hole on its lower side. The sampling tube is provided with several guide holes, which are all aligned with the water inlets. When the outer sleeve rotates relative to the sampling tube, the guide holes on the sampling tube and the water inlets on the outer sleeve are always connected. The outer sleeve is provided with multiple rows of soil-breaking plates along its length.

[0008] The sampling tube has multiple sealed cavities and storage cavities inside. Each sealed cavity is connected to a movable baffle at the same height, and each storage cavity is connected to a guide hole at the same height. Each sealed cavity and storage cavity is arranged adjacent to each other. The sampling tube is equipped with a pneumatic mechanism that can introduce gas into all sealed cavities or all storage cavities. The pneumatic mechanism is connected to several filter components, each of which is set in a storage cavity. The filter components can filter the groundwater entering the storage cavity.

[0009] The pneumatic mechanism is connected to a power component, which can drive all the filter components to rotate simultaneously through the pneumatic mechanism. Each guide hole is provided with a rubber brush plate, which can clean the filter components when they rotate.

[0010] In a further technical solution, the thrust assembly includes an arc-shaped groove, a plug rod, a first motor, and a cam;

[0011] The upper surface of the fixed plate is provided with multiple arc-shaped grooves, and the outer sleeve is fixedly connected to multiple insert rods. Each insert rod is inserted into an arc-shaped groove. The upper surface of the fixed plate is fixedly connected to a No. 1 motor, and the output shaft of the No. 1 motor is fixedly connected to a cam. The cam is located on one side of an insert rod.

[0012] A further technical solution describes a pneumatic mechanism that includes an air pump, an electric telescopic tube, and an air outlet.

[0013] The top of the sampling tube is provided with a mechanism chamber, which is connected to the outside. An air pump is fixedly installed in the mechanism chamber. The output shaft of the air pump is rotatably connected to an electric telescopic tube. The telescopic end of the electric telescopic tube is provided with multiple air holes at intervals along the length direction, and each air hole is equally spaced. The telescopic end of the electric telescopic tube passes through all the sealing cavities and the storage cavity.

[0014] In a further technical solution, a sealing gasket is provided between the telescopic end of the electric telescopic tube and the sealing cavity and the storage cavity. Multiple rubber sleeves are provided at intervals at the telescopic end of the electric telescopic tube, and the rubber sleeves are all provided on the upper side of the corresponding sealing cavity.

[0015] A further technical solution describes a filter assembly comprising an annular sleeve, a first filter screen, and a second filter screen;

[0016] The telescopic end of the electric telescopic tube is vertically fixedly connected with multiple annular sleeves, each annular sleeve being disposed in a corresponding storage cavity. The upper half of the annular sleeve is provided with a first filter screen, and the bottom of the annular sleeve is provided with a second filter screen. The aperture of the second filter screen is smaller than that of the first filter screen.

[0017] A further technical solution describes a power assembly that includes a second motor and a gear transmission pair. The second motor is fixedly connected to the inner wall of the air pump, and a gear transmission pair is used to drive the output shaft of the second motor to the fixed end of the electric telescopic tube.

[0018] A further technical solution describes a soil-crushing plate that is prismatic and is rotatably connected to the outside of the outer sleeve via an elastic torsion spring.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. The pneumatic mechanism introduces gas into all sealed cavities. Under the pressure of the air, all movable baffles extend and insert into the soil and rock layer at the same time. Then, the thrust assembly is activated, which pushes the outer tube to rotate back and forth. The outer tube drives all the soil fragments to make a circular motion around the sampling tube. All the sampling tubes break up and fragment the soil and rock layer near the outer tube, thereby preventing the soil and rock layer from forming a dense barrier near the outer tube.

[0021] 2. When the sampling tube is inserted into the soil and rock layer, the retractable movable baffle reduces the resistance when the outer tube moves downward. After the sampling tube is inserted into the soil and rock layer, multiple extended movable baffles block the soil and rock at different heights around the outer tube, preventing the soil near the outer tube from accumulating downward. The pneumatic mechanism pushes the movable baffle to unfold, which allows the sampling tube and the outer tube to be stably inserted into the soil and rock layer, preventing the sampling tube from tilting or deviating when the soil and rock layer breaks down.

[0022] 3. The pneumatic mechanism introduces gas into all storage chambers. When the outer tube rotates relative to the sampling tube, the guide hole on the sampling tube is connected to the water inlet hole on the outer tube. The storage chamber blows air out of the outer tube. Under the action of air pressure, all soil fragments outside the water inlet hole can be blown away from the water inlet hole to a position away from the water inlet hole. This prevents the soil fragments from clogging or falling into the water inlet hole when the outer tube rotates, thus affecting the flow of groundwater into the storage chamber.

[0023] 4. Motor No. 2 drives the electric telescopic tube to rotate through a gear transmission pair. The electric telescopic tube drives all the annular sleeves to rotate. When the annular sleeves rotate, the soil clogging the No. 1 filter screen will fall off under the push of the rubber brush plate. At this time, the soil clods and particles fall onto the No. 2 filter screen, which can further filter and clean the impurities and particles in the groundwater. At the same time, the continuous rotation of the annular sleeves, combined with the cleaning of the rubber brush plate, can ensure that the No. 1 filter screen always maintains a good filtration effect, and prevent impurities from clogging the No. 1 filter screen with the groundwater, thereby reducing the groundwater sampling efficiency and the accuracy of groundwater volume detection. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the device structure provided by the present invention;

[0025] Figure 2 This is a schematic diagram of the thrust assembly structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the outer sleeve in this invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the sampling tube in this invention;

[0028] Figure 5 This is a schematic diagram of the pneumatic mechanism in this invention;

[0029] Figure 6 This is a schematic diagram of the power component in this invention;

[0030] Figure 7 This is a schematic diagram of the structure of the filter component in this invention.

[0031] In the attached diagram: 1. Connecting seat; 2. Support rod; 3. Electric telescopic rod; 4. Thrust assembly; 41. Arc groove; 42. Insert rod; 43. Motor No. 1; 44. Cam; 5. Pneumatic mechanism; 51. Air pump; 52. Electric telescopic tube; 53. Air outlet; 6. Filter assembly; 61. Ring sleeve; 62. Filter No. 1; 63. Filter No. 2; 7. Power assembly; 71. Motor No. 2; 72. Gear transmission pair; 8. Rubber brush plate; 9. Rubber sleeve; 10. Fixed plate; 11. Sampling tube; 12. Outer sleeve; 13. Spring; 14. Drill bit assembly; 15. Movable baffle; 16. Soil crushing plate; 17. Water inlet; 18. Sealing cavity; 19. Storage cavity; 20. Mechanism compartment; 21. Guide hole. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0034] like Figures 1-7 As shown, a water sampling device for geological mapping of water conservancy projects provided in an embodiment of the present invention includes a connecting seat 1, a plurality of support rods 2 rotatably connected to the connecting seat 1, an electric telescopic rod 3 fixedly provided in the middle of the connecting seat 1, a fixed plate 10 fixedly connected to the telescopic end of the electric telescopic rod 3, a sampling tube 11 threadedly connected to the middle of the fixed plate 10, and a drill bit assembly 14 connected to the bottom of the sampling tube 11. The drill bit assembly 14 includes a drive motor and a drill bit, and the drill bit is driven to rotate by the drive motor.

[0035] The sampling tube 11 is rotatably connected to an outer tube 12. A spring 13 is provided between the outer tube 12 and the fixed plate 10. A thrust assembly 4 capable of pushing the outer tube 12 to reciprocate is provided on the fixed plate 10. Movable baffles 15 are provided at intervals along the length of the outer tube 12. The movable baffles 15 can be telescopically moved. A water inlet hole 17 is provided on the lower side of each movable baffle 15. A number of guide holes 21 are provided on the sampling tube 11. The guide holes 21 are aligned with the water inlet holes 17 one by one. When the outer tube 12 rotates relative to the sampling tube 11, the guide holes 21 on the sampling tube 11 and the water inlet holes 17 on the outer tube 12 are always connected. Multiple rows of soil breaking plates 16 are provided along the length of the outer tube 12.

[0036] The sampling tube 11 is provided with multiple sealed cavities 18 and storage cavities 19. Each sealed cavity 18 is connected to a movable baffle 15 at the same height, and each storage cavity 19 is connected to a guide hole 21 at the same height. Each sealed cavity 18 and storage cavity 19 is arranged adjacent to each other. The sampling tube 11 is provided with a pneumatic mechanism 5, which can introduce gas into all sealed cavities 18 or all storage cavities 19. The pneumatic mechanism 5 is connected to several filter components 6, each of which is arranged in a storage cavity 19. The filter components 6 can filter the groundwater entering the storage cavity 19.

[0037] The pneumatic mechanism 5 is connected to a power component 7, which can drive all the filter components 6 to rotate simultaneously through the pneumatic mechanism 5. A rubber brush plate 8 is provided on one side of each guide hole 21. When the filter components 6 rotate, the rubber brush plate 8 can clean the filter components 6.

[0038] Working principle:

[0039] Support rod 2 is placed on the upper part of the soil and rock layer. Then, the connecting seat 1 is fixed to the electric telescopic rod 3 by fixing bolts. The electric telescopic rod 3 is started to extend. The electric telescopic rod 3 drives the sampling tube 11 and the drill bit assembly 14 to move down. The drill bit assembly 14 is started to rotate. The sampling tube 11 drives the drill bit assembly 14 to drill through the soil and rock layer. At this time, the sampling tube 11 and the outer outer sleeve 12 are inserted into the soil and rock layer.

[0040] Under the squeezing force of the sampling tube 11 and the outer tube 12, the soil and rock near the sampling tube 11 and the outer tube 12 are prone to form a dense barrier, which prevents groundwater from flowing into the sampling tube 11. In this embodiment, the air pressure mechanism 5 is activated first, and the air pressure mechanism 5 introduces gas into all the sealed cavities 18. Since the sealed cavities 18 are all connected to the movable baffles 15 at the same height, under the push of air pressure, all the movable baffles 15 extend and insert into the soil and rock layer at the same time. Then the thrust assembly 4 is activated, and the thrust assembly 4 pushes the outer tube 12 to rotate back and forth. The outer tube 12 drives all the soil breaking plates 16 to make a circular motion around the sampling tube 11. All the sampling tubes 11 break up and fragment the soil and rock layer near the outer tube 12, thereby preventing the soil and rock layer from forming a dense barrier near the outer tube 12.

[0041] When the soil and rock layer near the outer casing 12 breaks, the broken soil and rock layer tends to accumulate downwards, which can block the water inlet 17 on the lower side, thus hindering the flow of groundwater into the storage cavity 19 on the lower side and affecting the sampling of groundwater. In this embodiment, the sampling tube 11 is inserted into the soil and rock layer, and the retractable movable baffle 15 reduces the resistance when the outer casing 12 moves downwards. After the sampling tube 11 is inserted into the soil and rock layer, the soil and rock at different heights around the outer casing 12 are blocked layer by layer by the multiple extended movable baffles 15, which prevents the soil layer near the outer casing 12 from accumulating downwards. The pneumatic mechanism 5 pushes the movable baffle 15 to unfold, which can make the sampling tube 11 and the outer casing 12 stably inserted into the soil and rock layer, and prevent the sampling tube 11 from tilting or deviating when the soil and rock layer is broken.

[0042] Furthermore, the pneumatic mechanism 5 introduces gas into all storage chambers 19. When the outer tube 12 rotates relative to the sampling tube 11, the guide hole 21 on the sampling tube 11 is connected to the water inlet hole 17 on the outer tube 12. The storage chamber 19 blows air out of the outer tube 12. Under the action of air pressure, all soil fragments outside the water inlet hole 17 can be blown away from the water inlet hole 17, so as to prevent the soil fragments from blocking or falling into the water inlet hole 17 when the outer tube 12 rotates, thereby affecting the flow of groundwater into the storage chamber 19.

[0043] Afterwards, the groundwater in the soil and rock layer enters the corresponding storage chamber 19 through each water inlet 17. At this time, the filter assembly 6 can filter the groundwater entering the storage chamber 19. The power assembly 7 can drive all the filter assemblies 6 to rotate simultaneously through the air pressure mechanism 5. When the filter assembly 6 rotates, the rubber brush plate 8 can clean the filter assembly 6, thereby always maintaining the filtering effect of the filter assembly 6 on the particles in the water flow. At the same time, all the storage chambers 19 on the sampling tube 11 are kept open during the sampling process, so that groundwater at different heights in the soil and rock layer can be fully sampled, and the water content of the soil and rock layer at different heights can be measured by the water sample volume in different storage chambers 19.

[0044] like Figure 2 As shown, in a preferred embodiment of the present invention, the thrust assembly 4 includes an arc-shaped groove 41, a plug rod 42, a first motor 43, and a cam 44.

[0045] The upper surface of the fixed plate 10 is provided with multiple arc-shaped grooves 41. The outer sleeve 12 is fixedly connected to multiple insertion rods 42, each insertion rod 42 being inserted into an arc-shaped groove 41. The upper surface of the fixed plate 10 is fixedly connected to a No. 1 motor 43. The output shaft of the No. 1 motor 43 is fixedly connected to a cam 44, which is located on one side of an insertion rod 42.

[0046] In this embodiment of the invention, the first motor 43 is started, which drives the cam 44 to rotate. The cam 44 pushes the insertion rod 42 on one side, and all the insertion rods 42 slide along the corresponding arc groove 41. Under the limiting cooperation of the insertion rod 42 and the arc groove 41, the insertion rod 42 drives the outer tube 12 to rotate around the sampling tube 11. Since a spring 13 is provided between the outer tube 12 and the fixed plate 10, under the tension of the spring 13, the outer tube 12 can then rotate in the opposite direction relative to the sampling tube 11. Under the continuous rotation of the first motor 43, the outer tube 12 can reciprocate relative to the sampling tube 11.

[0047] like Figure 5 As shown, in a preferred embodiment of the present invention, the pneumatic mechanism 5 includes an air pump 51, an electric telescopic tube 52, and an air outlet 53.

[0048] The top of the sampling tube 11 is provided with a mechanism chamber 20, which is connected to the outside. An air pump 51 is fixedly installed in the mechanism chamber 20. The output shaft of the air pump 51 is rotatably connected to an electric telescopic tube 52. The telescopic end of the electric telescopic tube 52 is provided with multiple air holes 53 at intervals along the length direction, and each air hole 53 is equally spaced. The telescopic end of the electric telescopic tube 52 passes through all the sealing cavities 18 and the storage cavity 19.

[0049] In this embodiment of the invention, when the electric telescopic tube 52 is in the retracted state, each air outlet 53 is in the corresponding sealed cavity 18. At this time, the air pump 51 is started to inflate each sealed cavity 18 with air. Under the action of air pressure, each movable baffle 15 extends outward, thereby allowing each movable baffle 15 to be inserted into the soil layer.

[0050] Then, the electric telescopic tube 52 is extended, and each air outlet 53 on the electric telescopic tube 52 enters the corresponding storage cavity 19. The height of each air outlet 53 is level with the height of the corresponding row of water inlets 17. At this time, air continues to be pumped into the electric telescopic tube 52 through the air pump 51. The airflow in the electric telescopic tube 52 is blown through the air outlet 53 to the water inlets 17 on the storage cavity 19. The soil fragments outside the water inlets 17 are blown away from the water inlets 17 to a position away from the water inlets 17, so as to prevent the soil fragments outside the water inlets 17 from falling into the storage cavity 19.

[0051] like Figure 5 As shown, in a preferred embodiment of the present invention, a sealing gasket is provided between the telescopic end of the electric telescopic tube 52 and the sealing cavity 18 and the storage cavity 19. A plurality of rubber sleeves 9 are provided at intervals at the telescopic end of the electric telescopic tube 52, and the rubber sleeves 9 are all provided on the upper side of the corresponding sealing cavity 18.

[0052] In this embodiment of the invention, the sealing gasket seals the gap between the electric telescopic tube 52 and the sealing cavity 18 and the storage cavity 19, preventing groundwater samples in different storage cavities 19 from flowing into each other, thereby affecting the sampling accuracy of the groundwater samples; when the telescopic end of the electric telescopic tube 52 extends and enters the storage cavity 19 from the sealing cavity 18, the electric telescopic tube 52 drives the rubber sleeve 9 to squeeze the corresponding sealing gasket, thereby increasing the sealing performance between the sealing cavity 18 and the storage cavity 19 and the electric telescopic tube 52.

[0053] like Figure 7 As shown, in a preferred embodiment of the present invention, the filter assembly 6 includes an annular sleeve 61, a first filter screen 62, and a second filter screen 63.

[0054] The telescopic end of the electric telescopic tube 52 is vertically fixedly connected with multiple annular sleeves 61. Each annular sleeve 61 is correspondingly set in a storage cavity 19. The upper half of the annular sleeve 61 is provided with a first filter screen 62, and the bottom of the annular sleeve 61 is provided with a second filter screen 63. The aperture of the second filter screen 63 is smaller than that of the first filter screen 62.

[0055] In this embodiment of the invention, when the outer sleeve 12 rotates relative to the sampling tube 11, the No. 1 filter screen 62 on each annular sleeve 61 is located on one side of the corresponding row of water inlet holes 17. The No. 1 filter screen 62 can obstruct the soil outside the water inlet hole 17. At this time, when the airflow in the electric telescopic tube 52 blows outward through the No. 1 filter screen 62, it can prevent the particles in the soil from clogging the No. 1 filter screen 62.

[0056] like Figure 6As shown, in a preferred embodiment of the present invention, the power assembly 7 includes a second motor 71 and a gear transmission pair 72. The second motor 71 is fixedly connected to the inner wall of the air pump 51, and the output shaft of the second motor 71 is connected to the fixed end of the electric telescopic tube 52 by a gear transmission pair 72.

[0057] In this embodiment of the invention, during sampling, motor 71 is started. Motor 71 drives electric telescopic tube 52 to rotate through gear transmission pair 72. Electric telescopic tube 52 drives all annular sleeves 61 to rotate. When the annular sleeves 61 rotate, the soil clogging the first filter screen 62 will fall off under the push of the rubber brush plate 8. At this time, the soil clods fall onto the second filter screen 63. The second filter screen 63 can further filter and clean the impurities and particles in the groundwater. At the same time, the continuous rotation of the annular sleeves 61, combined with the cleaning of the rubber brush plate 8, can ensure that the first filter screen 62 always maintains a good filtration effect, and prevent impurities from clogging the first filter screen 62 with the groundwater, thereby reducing the sampling efficiency of groundwater and the accuracy of groundwater volume detection.

[0058] like Figure 3 As shown, in a preferred embodiment of the present invention, the soil crushing plate 16 is prismatic and is rotatably connected to the outside of the outer sleeve 12 by an elastic torsion spring.

[0059] In this embodiment of the invention, when the outer sleeve 12 drives all the soil-breaking plates 16 to reciprocate in a circular motion around the sampling tube 11, the soil-breaking plates 16 rotate around the outer wall of the outer sleeve 12 under the push of the soil block. At this time, under the action of the elastic torsion spring, the soil-breaking plates 16 themselves reciprocate, thereby improving the breaking effect of the soil-breaking plates 16 on the soil layer outside the outer sleeve 12.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water sampling device for geological mapping of water conservancy projects, comprising a connecting base (1), characterized in that, An electric telescopic rod (3) is fixedly installed in the middle of the connecting seat (1). A fixed plate (10) is fixedly connected to the telescopic end of the electric telescopic rod (3). A sampling tube (11) is threadedly connected to the middle of the fixed plate (10). A drill bit assembly (14) is connected to the bottom of the sampling tube (11). The sampling tube (11) is rotatably connected to an outer tube (12). A spring (13) is provided between the outer tube (12) and the fixed plate (10). A thrust assembly (4) is provided on the fixed plate (10) to push the outer tube (12) to rotate back and forth. Movable baffles (15) are provided at intervals along the length of the outer tube (12). The movable baffles (15) can move telescopically. A water inlet hole (17) is provided on the lower side of each movable baffle (15). A number of guide holes (21) are provided on the sampling tube (11). The guide holes (21) are aligned with the water inlet holes (17). When the outer tube (12) rotates relative to the sampling tube (11), the guide holes (21) on the sampling tube (11) and the water inlet holes (17) on the outer tube (12) are always connected. The outer tube (12) is provided with multiple rows of soil breaking plates (16) along the length of the outer tube (12). The sampling tube (11) is provided with multiple sealed cavities (18) and storage cavities (19). Each sealed cavity (18) is connected to a movable baffle (15) at the same height position. Each storage cavity (19) is connected to a guide hole (21) at the same height position. Each sealed cavity (18) and storage cavity (19) is arranged adjacent to each other. The sampling tube (11) is provided with a pneumatic mechanism (5). The pneumatic mechanism (5) can introduce gas into all sealed cavities (18) or all storage cavities (19). The pneumatic mechanism (5) is connected to several filter components (6). Each filter component (6) is arranged in the storage cavity (19). The filter component (6) can filter the groundwater entering the storage cavity (19). The pneumatic mechanism (5) is connected to a power component (7). The power component (7) can drive all the filter components (6) to rotate simultaneously through the pneumatic mechanism (5). A rubber brush plate (8) is provided on one side of the guide hole (21). When the filter component (6) rotates, the rubber brush plate (8) can clean the filter component (6).

2. The water sampling device for geological mapping of water conservancy projects according to claim 1, characterized in that, The thrust assembly (4) includes an arc groove (41), a plug rod (42), a No. 1 motor (43), and a cam (44). The upper surface of the fixed plate (10) is provided with multiple arc-shaped grooves (41). The outer sleeve (12) is fixedly connected to multiple insert rods (42). Each insert rod (42) is inserted into an arc-shaped groove (41). The upper surface of the fixed plate (10) is fixedly connected to a No. 1 motor (43). The output shaft of the No. 1 motor (43) is fixedly connected to a cam (44). The cam (44) is located on one side of an insert rod (42).

3. The water sampling device for geological mapping of water conservancy projects according to claim 1, characterized in that, The pneumatic mechanism (5) includes an air pump (51), an electric telescopic tube (52), and an air outlet (53); The top of the sampling tube (11) is provided with a mechanism chamber (20), which is connected to the outside. An air pump (51) is fixedly installed in the mechanism chamber (20). The output shaft of the air pump (51) is rotatably connected to an electric telescopic tube (52). The telescopic end of the electric telescopic tube (52) is provided with multiple exhaust holes (53) at intervals along the length direction, and each exhaust hole (53) is equally spaced. The telescopic end of the electric telescopic tube (52) passes through all the sealing cavities (18) and the storage cavity (19).

4. The water sampling device for geological mapping of water conservancy projects according to claim 3, characterized in that, A sealing gasket is provided between the telescopic end of the electric telescopic tube (52) and the sealing cavity (18) and the storage cavity (19). Multiple rubber sleeves (9) are provided at intervals at the telescopic end of the electric telescopic tube (52), and the rubber sleeves (9) are all provided on the upper side of the corresponding sealing cavity (18).

5. The water sampling device for geological mapping of water conservancy projects according to claim 3, characterized in that, The filter assembly (6) includes an annular sleeve (61), a first filter screen (62), and a second filter screen (63). The telescopic end of the electric telescopic tube (52) is vertically fixedly connected with multiple annular sleeves (61), each annular sleeve (61) is correspondingly set in a storage cavity (19), the upper half of the annular sleeve (61) is provided with a first filter screen (62), and the bottom of the annular sleeve (61) is provided with a second filter screen (63), the aperture of the second filter screen (63) is smaller than that of the first filter screen (62).

6. The water sampling device for geological mapping of water conservancy projects according to claim 3, characterized in that, The power assembly (7) includes a second motor (71) and a gear transmission pair (72). The second motor (71) is fixedly connected to the inner wall of the air pump (51). The output shaft of the second motor (71) is connected to the fixed end of the electric telescopic tube (52) by a gear transmission pair (72).

7. The water sampling device for geological mapping of water conservancy projects according to claim 1, characterized in that, The soil-breaking plate (16) is prismatic and is rotatably connected to the outside of the outer sleeve (12) by an elastic torsion spring.

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