A sampling device for geological engineering water body detection

Abstract

The present invention belongs to the field of geological engineering technology, and discloses a sampling device for geological engineering water body detection, including a top cover, a pull ring welded on the top of the top cover, a bolt installed on the outer thread of the top cover, and a sampling tube and an outer tube located at the bottom of the top cover are pressed and installed by the bolts, the sampling tube is located in the middle of the inner cavity of the outer tube, and a water inlet groove is opened on the front of the outer tube. This device prevents the filter plate and the sealing plate from rotating before the sampling depth is reached. When the filter plate and the sealing plate rotate with the driving of the sealing column and the limit block, the effective filtering area on the surface of the filter plate becomes larger and larger. This design allows the filter surface exposed in the early stage of the rotation of the filter plate to completely consume large-volume impurities and small-volume impurities affected by water pressure in the water body, and at least half of the filter surface exposed in the subsequent rotation of the filter plate can perform effective filtering work.

Description

Technical Field

[0001] The invention belongs to the technical field of geological engineering, and in particular relates to a sampling device for geological engineering water body detection. Background Art

[0002] Geological engineering is a science that studies geological problems and uses engineering means to solve them. Geological engineering sometimes requires testing of water bodies near the studied geology. The first step is to sample the water body, and to more comprehensively understand the geological conditions by testing the physical and chemical parameters of the sampled water body. In the prior art, after the water sampling device goes deep into the specified depth interval of the water sampling area, the water body automatically enters the sampling area under the action of water pressure, but the water body contains a large amount of impurities (including impurities with a larger volume). The existing sampling equipment uses a filter to filter the water body, but as the water depth increases, the water pressure increases, and the volume of flexible impurities or impurities with cavities inside the deep water area decreases under the action of water pressure, which not only easily penetrates the filter, but even the volume of some impurities just reaches the requirement of blocking the filter. For some areas with poor water quality, it is no longer realistic to ensure normal water sampling by traditional filtering methods. Therefore, the present invention is committed to designing a sampling device for geological engineering water body detection to overcome the above-mentioned defects. Summary of the invention

[0003] The purpose of the present invention is to provide a sampling device for geological engineering water body detection to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sampling device for geological engineering water body detection, comprising a top cover, a pull ring is welded on the top of the top cover, a bolt is installed on the outer thread of the top of the top cover, and a sampling tube and an outer tube located at the bottom of the top cover are pressed and installed by the bolts, the sampling tube is located in the middle of the inner cavity of the outer tube, a water inlet groove is opened on the front of the outer tube, and a sealing groove 1 and a sealing groove 2 are respectively opened on the left and right sides of the water inlet groove, the inner wall of the sealing groove 1 is sealed with a sealing plate, and the inner wall of the sealing groove 2 is sealed with a filter plate, and the surface of the filter plate is opened A through-type filter hole is provided, the sealing plate is fixedly connected to the filter plate, a rectangular protrusion is provided on one side of the filter plate along the diameter of the outer cylinder, a plurality of fixed blocks are fixedly connected to the right side of the outer surface of the outer cylinder, a sealing cylinder surrounding the circumference of the sampling cylinder is fixedly connected to one side of the fixed block, an internal sealing sleeve of the sealing cylinder is provided with a spring 1 and a sealing column, an outer end of the sealing column passes through the rectangular protrusion and is fixedly connected to the limiting block, two ends of the spring 1 are elastically connected to the sealing cylinder and the inner end of the sealing column respectively, an oil hole is provided at the inner end of the sealing column, and the inner cavity of the sealing cylinder is filled with kerosene.

[0005] As a preferred embodiment of the present invention, the top of the inner wall of the sampling cylinder is fixedly connected to a fixed cylinder, the inner wall of the fixed cylinder is movably sleeved with a moving column, the top of the outer surface of the moving column is fixedly installed with a limit plate, a piston is sealingly sleeved between the inner wall of the sampling cylinder and the outer surface of the moving column, a seal is installed at the bottom of the outer surface of the moving column, the bottom of the inner wall of the sampling cylinder is fixedly connected to a fixed ring, the inner ring surface of the fixed ring is provided with a plurality of groups of card grooves, the outer surface of the seal is provided with a plurality of groups of sealing holes, and the inner wall of the sealing hole is provided with a through hole A slideway passes through the bottom of the seal, and a fixed column and a second spring are movably sleeved inside the sealing hole. The two ends of the second spring are elastically connected to the sealing hole and the fixed column respectively. An inner end of the fixed column is fixedly connected to a connecting rope, and the other end of the connecting rope passes through the slideway and is fixedly connected to a connecting ring located at the bottom of the seal. The outer surface of the seal and the inner ring surface of the fixing ring are both provided with inclined surfaces that adapt to each other and abut against each other. The sealing hole is parallel to the axis of the card slot, and the axes of the sealing hole, the fixed column and the card slot are all inclined downward relative to the horizontal plane.

[0006] As a preferred solution of the present invention, the piston abuts against the top of the fixed ring, the axial cross-section of the moving column is in a "T" shape, and the seal is fixedly installed on the top of the lower end of the moving column.

[0007] As a preferred solution of the present invention, when the seal moves upward to a height flush with the top of the fixing ring, the fixing column is squeezed by the second spring and is firmly clamped in the clamping groove.

[0008] As a preferred solution of the present invention, a limiting groove is provided at the top of the movable column, the bottom of the inner wall of the slideway is fixedly connected to the limiting column, the limiting column is adapted to be inserted into the limiting groove, and the top view cross-sectional shape of the limiting column is a square.

[0009] As a preferred solution of the present invention, the sealing column and the limiting block can rotate around the axis of the outer cylinder, and a distance is left between the limiting block and the rectangular protrusion of the filter plate under initial conditions.

[0010] As a preferred solution of the present invention, when the sealing plate and the filter plate under the initial condition move to the rightmost side, the sealing plate is completely sealed to the water inlet trough.

[0011] As a preferred solution of the present invention, the number of the sealing cylinder, sealing column and limit block are three groups, and they are equidistantly distributed longitudinally along the axis of the outer cylinder. The outer surface of the sealing column is fixedly connected to a limit ring, and the limit ring abuts against one side of the filter plate.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. This device has been redesigned so that the filtering function of the filter plate can be used in sections. In order to cope with water bodies with complex impurity distribution, this device uses sealing grooves 1 and 2 opened on both sides of the water inlet groove to seal and install the sealing plate and the filter plate respectively, and connects the sealing plate and the filter plate. Through multiple sets of sealing cylinders installed on the outside of the outer cylinder, a sealing column is provided in the internal sealing sleeve, so that the outer end of the sealing column passes through the rectangular protrusion set on one side of the filter plate. A spring 1 is also installed inside the sealing cylinder. When the limit block and the sealing column move toward the inner cavity of the sealing cylinder under the action of water pressure, the spring 1 will be compressed to generate a rebound force. The oil-passing hole opened at one end of the inner side of the sealing column is also used. The hole allows the kerosene filled in the inner cavity of the sealing cylinder to pass through the oil hole when the sealing column moves, thereby providing resistance to the movement of the sealing column. By setting a distance between the limit block and the filter plate, the equipment will not drive the filter plate and the sealing plate to rotate before reaching the sampling depth. When the filter plate and the sealing plate are driven to rotate by the sealing column and the limit block, the effective filtering area on the surface of the filter plate becomes larger and larger. This design allows the exposed filtering surface of the filter plate in the early stage of rotation to completely consume large-volume impurities in the water and small-volume impurities affected by water pressure, and at least half of the exposed filtering surface of the filter plate in the subsequent rotation can perform effective filtering work.

[0014] 2. The device also optimizes the sampling tube so that the water body can be automatically and reliably sealed after sampling. A piston is provided to gradually move upward under the action of water pressure, and drive the limit plate upward to move, so that the movable column and the seal as a whole also move with the piston. By providing mutually matching inclined surfaces on the outer surface of the seal and the inner ring surface of the fixed ring, the fixed column protruding from the outer surface of the seal is contracted into the sealing hole under the action of the inclined surface of the fixed ring until the axis of the fixed column coincides with the axis of the slot, so that the fixed column is snapped into the slot under the action of the second spring, completing the combination of the seal and the slot. In addition, by utilizing the design of the sealing hole, the fixed column and the slot with the axis inclined downward, the elastic force of the second spring acting on the slot through the fixed column generates a vertical upward reaction force, driving the seal to move upward, so that the joint surface of the seal and the fixed ring fits more tightly and the seal is more reliable.

[0015] 3. Then, the device also uses a slideway opened on the inner wall of the sealing hole to place a connecting rope inside. One end of the connecting rope is connected to the fixed column, and the other end thereof passes downward to the bottom of the seal and is connected to the connecting ring. The connecting ring is connected to the fixed column through the slideway and is supported by the compressed spring 2. When the seal is engaged with the fixed ring and sealed, the connecting ring can be pulled downward, and the connecting rope and the fixed column can be driven to move toward one end of the compressed spring 2, so that the fixed column is disengaged from the slot during the movement, and the engagement connection between the seal and the fixed ring is released, thereby realizing the release of water sampling. This design is safe and reliable, can adapt to complex water environments, and will not be easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front perspective schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a front cutaway schematic diagram of the overall structure of the present invention;

[0018] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at center A;

[0019] Figure 4 It is a top view and cutaway schematic diagram of the outer cylinder, sampling cylinder, fixing block, sealing cylinder, sealing column and limiting block of the present invention;

[0020] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0021] Figure 6 It is a schematic diagram of the separation of the top cover, the pull ring, the bolts, the outer cylinder, the sampling cylinder and the sealing plate of the present invention;

[0022] Figure 7 It is a schematic diagram of the separation of the fixed cylinder, the limiting column, the moving column, the limiting plate, the piston, the fixing ring, the sealing plate, the fixing column, the second spring, the connecting rope and the fixing ring of the present invention;

[0023] Figure 8 It is a schematic structural diagram of the outer cylinder, filter plate, fixing block, sealing cylinder, sealing column, limiting block, limiting ring and spring 1 of the present invention.

[0024] In the figure: 1. top cover; 2. pull ring; 3. bolt; 4. outer tube; 5. sampling tube; 6. water inlet groove; 7. sealing plate; 8. filter plate; 9. fixing block; 10. sealing tube; 11. sealing column; 12. limiting block; 13. limiting ring; 14. spring one; 15. oil hole; 16. kerosene; 17. sealing groove one; 18. sealing groove two; 19. filter hole; 20. fixing tube; 21. limiting column; 22. moving column; 23. limiting groove; 24. limiting plate; 25. piston; 26. fixing ring; 27. slot; 28. seal; 29. ​​sealing hole; 30. slideway; 31. fixing column; 32. spring two; 33. connecting rope; 34. connecting ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 8 As shown, the embodiment of the present invention provides a sampling device for geological engineering water body detection, including a top cover 1, a pull ring 2 is welded on the top of the top cover 1, a bolt 3 is installed on the outer thread of the top of the top cover 1, and a sampling tube 5 and an outer tube 4 located at the bottom of the top cover 1 are pressed and installed by the bolt 3, the sampling tube 5 is located in the middle of the inner cavity of the outer tube 4, a water inlet groove 6 is opened on the front of the outer tube 4, and a sealing groove 17 and a sealing groove 2 18 are opened on the left and right sides of the water inlet groove 6, respectively, the inner wall of the sealing groove 17 is sealed with a sealing plate 7, the inner wall of the sealing groove 2 18 is sealed with a filter plate 8, and the surface of the filter plate 8 is opened with a through-type filter hole 1 9, the sealing plate 7 is fixedly connected to the filter plate 8, a rectangular protrusion is arranged on one side of the filter plate 8 along the diameter of the outer cylinder 4, a plurality of fixed blocks 9 are fixedly connected to the right side of the outer surface of the outer cylinder 4, a sealing cylinder 10 surrounding the circumference of the sampling cylinder 5 is fixedly connected to one side of the fixed block 9, a spring 14 and a sealing column 11 are arranged inside the sealing sleeve of the sealing cylinder 10, an outer end of the sealing column 11 passes through the rectangular protrusion and is fixedly connected to the limiting block 12, two ends of the spring 14 are elastically connected to the inner end of the sealing cylinder 10 and the sealing column 11 respectively, an oil hole 15 is arranged on the inner end of the sealing column 11, and the inner cavity of the sealing cylinder 10 is filled with kerosene 16;

[0027] The device has been redesigned so that the filtering function of the filter plate 8 can be used in sections. In order to cope with water bodies with complex impurity distribution, the device uses the sealing groove 17 and the sealing groove 2 18 opened on both sides of the water inlet groove 6 to seal and install the sealing plate 7 and the filter plate 8 respectively, and connects the sealing plate 7 and the filter plate 8. Through multiple sets of sealing cylinders 10 installed on the outside of the outer cylinder 4, a sealing column 11 is provided in the internal sealing sleeve, so that the outer end of the sealing column 11 passes through the rectangular protrusion set on one side of the filter plate 8. A spring 14 is also installed inside the sealing cylinder 10. When the limit block 12 and the sealing column 11 move toward the inner cavity of the sealing cylinder 10 under the action of water pressure, the spring 14 will be compressed to generate a rebound force. The sealing column 11 is opened at one end of the inner side of the sealing column 11. The oil hole 15 allows the kerosene 16 filled in the inner cavity of the sealing tube 10 to pass through the oil hole 15 when the sealing column 11 moves, thereby providing resistance to the movement of the sealing column 11. By setting a distance between the limit block 12 and the filter plate 8, the equipment will not drive the filter plate 8 and the sealing plate 7 to rotate before reaching the sampling depth. When the filter plate 8 and the sealing plate 7 are driven to rotate by the sealing column 11 and the limit block 12, the effective filtering area on the surface of the filter plate 8 becomes larger and larger. This design allows the filtering surface of the filter plate 8 exposed in the early stage of rotation to completely consume large-volume impurities and small-volume impurities affected by water pressure in the water body, and at least half of the filtering surface of the filter plate 8 exposed in the subsequent rotation can perform effective filtering work.

[0028] Among them, the top of the inner wall of the sampling tube 5 is fixedly connected with a fixed tube 20, the inner wall of the fixed tube 20 is movably sleeved with a moving column 22, the top of the outer surface of the moving column 22 is fixedly installed with a limit plate 24, a piston 25 is sealed between the inner wall of the sampling tube 5 and the outer surface of the moving column 22, a seal 28 is installed at the bottom of the outer surface of the moving column 22, a fixed ring 26 is fixedly connected to the bottom of the inner wall of the sampling tube 5, a plurality of groups of card grooves 27 are provided on the inner ring surface of the fixed ring 26, a plurality of groups of sealing holes 29 are provided on the outer surface of the seal 28, and a slideway is provided on the inner wall of the sealing hole 29 that penetrates to the bottom of the seal 28 30, a fixing column 31 and a second spring 32 are movably sleeved inside the sealing hole 29, and the two ends of the second spring 32 are elastically connected to the sealing hole 29 and the fixing column 31 respectively. A connecting rope 33 is fixedly connected to the inner end of the fixing column 31, and the other end of the connecting rope 33 passes through the slideway 30 and is fixedly connected to a connecting ring 34 located at the bottom of the sealing opening 28. The outer surface of the sealing opening 28 and the inner ring surface of the fixing ring 26 are both provided with inclined surfaces that are adapted to abut against each other. The sealing hole 29 is parallel to the axis of the card slot 27, and the axes of the sealing hole 29, the fixing column 31 and the card slot 27 are all inclined downward relative to the horizontal plane;

[0029] The device also optimizes the sampling tube 5 so that the water body can be automatically and reliably sealed after sampling. The piston 25 is provided to gradually move upward under the action of water pressure, and drives the limit plate 24 upward to move, so that the movable column 22 and the sealing port 28 as a whole also move with the piston 25. By providing mutually adapted inclined surfaces on the outer surface of the sealing port 28 and the inner surface of the fixing ring 26, the fixing column 31 protruding from the outer surface of the sealing port 28 is contracted into the sealing hole 29 under the action of the inclined surface of the fixing ring 26. , until the axis of the fixing column 31 coincides with the axis of the card slot 27, so that the fixing column 31 is inserted into the card slot 27 under the action of the second spring 32, and the combination of the seal 28 and the card slot 27 is completed. In addition, by utilizing the design of the sealing hole 29, the fixing column 31 and the card slot 27 with the axis inclined downward, the elastic force of the second spring 32 acting on the card slot 27 through the fixing column 31 generates a vertical upward reaction force, driving the seal 28 to move upward, so that the joint surface of the seal 28 and the fixing ring 26 fits more tightly and the seal is more reliable.

[0030] Then, the device also uses a slideway 30 opened on the inner wall of the sealing hole 29 to place a connecting rope 33 inside. One end of the connecting rope 33 is connected to the fixing column 31, and the other end thereof passes downward to the bottom of the seal 28 and is connected to the connecting ring 34. The connecting ring 34 is connected to the fixing column 31 through the slideway 30 and is supported by the compressed spring 232. When the seal 28 is engaged and sealed with the fixing ring 26, the connecting ring 34 can be pulled downward, and the connecting rope 33 and the fixing column 31 can be driven to move toward one end of the compressed spring 232, so that the fixing column 31 is disengaged from the slot 27 during the movement, and the locking connection between the seal 28 and the fixing ring 26 is released, so as to realize the release of water sampling. This design is safe and reliable, can adapt to complex water environments, and will not be easily damaged.

[0031] The piston 25 abuts against the top of the fixed ring 26, the axial cross-section of the moving column 22 is in a "T" shape, and the seal 28 is fixedly installed on the top of the lower end of the moving column 22;

[0032] The seal 28 is supported by the bottom protrusion of the movable column 22. When the movable column 22 moves upward, it drives the seal 28 to move upward.

[0033] When the seal 28 moves upward to a height flush with the top of the fixing ring 26, the fixing column 31 is squeezed by the spring 2 32 and is firmly stuck in the slot 27;

[0034] like Figure 2 , Figure 3 As shown, when the seal 28 rises to a height flush with the top of the fixing ring 26, the joint surfaces of the seal 28 and the fixing ring 26 are completely abutted and fitted. At this time, the fixing column 31 applies pressure to the card slot 27 under the elastic force of the spring 2 32, which not only realizes the card connection between the seal 28 and the fixing ring 26, but also utilizes the inclined design of the spring 2 32 to generate an upward reaction force on the seal 28. This reaction force will push the seal 28 upward, making it more tightly connected to the inner ring surface of the fixing ring 26, and the sealing effect is good.

[0035] The top of the movable column 22 is provided with a limiting groove 23, the bottom of the inner wall of the slideway 30 is fixedly connected with the limiting column 21, the limiting column 21 is adapted to be inserted into the limiting groove 23, and the top view cross-section of the limiting column 21 is a square;

[0036] The upper and lower positions of the fixed column 31 and the slot 27 completely correspond. The structure for realizing this function comes from the mutual engagement and adaptation between the limiting column 21 and the limiting slot 23. Since the cross-sectional shape of the limiting column 21 is a square, the movable column 22 cannot rotate and can only move up and down.

[0037] The sealing column 11 and the stopper 12 can rotate around the axis of the outer cylinder 4, and a distance is left between the stopper 12 and the rectangular protrusion of the filter plate 8 under the initial condition;

[0038] When the sealing column 11 and the limit block 12 are subjected to the water pressure, they will move toward the inner cavity of the sealing cylinder 10 and compress the spring 14. At this time, the limit block 12 will drive the filter plate 8 and the sealing plate 7 to rotate, thereby driving the filter plate 8 to move into the water inlet trough 6, so that the water inlet trough 6 has a filtering function.

[0039] Wherein, when the sealing plate 7 and the filter plate 8 under the initial condition move to the rightmost side, the sealing plate 7 is completely sealed to the water inlet groove 6;

[0040] Under the initial condition, the sealing plate 7 is completely sealed in the water inlet groove 6. In this state, the sealing column 11 is reset under the action of the spring 14.

[0041] The sealing cylinder 10, the sealing column 11 and the limiting block 12 are all in three groups and are equidistantly distributed along the axis of the outer cylinder 4. The outer surface of the sealing column 11 is fixedly connected to a limiting ring 13, which abuts against one side of the filter plate 8.

[0042] The sealing cylinder 10, the sealing column 11 and the limiting block 12 are arranged in three groups, which realize the automatic rotation and opening of the filter plate 8 for filtering under the cooperation of the deep pressure inside the water body.

[0043] Working principle:

[0044] First, install the sampling tube 5 into the outer tube 4, cover the top cover 1, and lock it with bolts 3. The pull ring 2 is used to hoist the equipment, and the hoisted equipment is slowly lowered into the water;

[0045] Then, the equipment is completely submerged in water. Before reaching the specified depth, the water inlet groove 6 is in a sealed state. The limit block 12 and the sealing column 11 move toward the inner wall of the sealing cylinder 10 around the axis of the outer cylinder 4 under the action of water pressure, and compress the spring 14. At the same time, the oil hole 15 opened at one end of the inner side of the sealing column 11 slowly passes kerosene 16 in a relative motion. The above-mentioned rebound force can resist the water pressure on the equipment in the early stage.

[0046] Then, after the device enters the specified depth of the water body, the limit block 12 begins to contact the filter plate 8 and starts to drive the filter plate 8 and the sealing plate 7 to rotate clockwise around the axis of the outer cylinder 4. At this time, the sealing plate 7 begins to enter the interior of the sealing groove 17, and the filter plate 8 begins to gradually leave the sealing groove 2 18. Figure 4As shown, in the area of ​​the water inlet tank 6, the filtration surface of the filter plate 8 occupies an increasingly larger area. In the early stage, the water enters the inner cavity of the outer cylinder 4 through the filtration hole 19. At this time, impurities begin to gather on the side of the filter plate 8 surface close to the limit ring 13. The water pressure drives the sealing column 11, the limit block 12, the limit ring 13 and the filter plate 8 to rotate continuously. At this time, the right side of the filter plate 8 surface begins to gradually contact the water and performs subsequent filtration. Since the larger volume impurities in the water in the early stage are filtered by the exposed part of the filter plate 8 surface first, the filtration burden on the other side of the filter plate 8 surface is reduced.

[0047] Finally, the water passes through the filtration of the filter plate 8 and enters the inner cavity of the sampling tube 5. The piston 25 moves upward under the action of the water pressure and gradually contacts the limit plate 24, driving the limit plate 24, the movable column 22 and the seal 28 to move upward. At this time, the fixed column 31 contacts the inner ring surface of the fixed ring 26 and is squeezed into the inner cavity of the sealing hole 29, compressing the spring 232. When the seal 28 and the fixed ring 26 abut against each other, the sealing hole 29 is aligned with the card slot 27. At this time, the fixed column 31 is moved forward under the action of the spring 232. The sample tube 5 is inserted into the card slot 27, and an inclined downward pressure is generated on the inner wall of the card slot 27. This pressure will generate an opposite force on the seal 28, so that the joint surface of the seal 28 and the fixing ring 26 fits more closely to ensure the seal. After the sampling is completed, it is only necessary to remove the bolt 3, take out the sampling tube 5, pull the connecting ring 34 downward, and drive the slide 30 and the fixing column 31 to move, so that the fixing column 31 is separated from the card slot 27, that is, the sealing connection between the seal 28 and the fixing ring 26 is released, and the sampled water can be released at this time.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for geological engineering water body detection, comprising a top cover (1), a pull ring (2) welded to the top of the top cover (1), a bolt (3) threadedly mounted on the outer side of the top of the top cover (1), and a sampling tube (5) and an outer tube (4) located at the bottom of the top cover (1) are press-fitted and mounted through the bolt (3), characterized in that: The sampling tube (5) is located in the middle of the inner cavity of the outer tube (4); a water inlet groove (6) is provided on the front of the outer tube (4); a sealing groove 1 (17) and a sealing groove 2 (18) are provided on the left and right sides of the water inlet groove (6), respectively; a sealing plate (7) is sealed and clamped on the inner wall of the sealing groove 1 (17); a filter plate (8) is sealed and clamped inside the sealing groove 2 (18); a through-type filter hole (19) is provided on the surface of the filter plate (8); the sealing plate (7) is fixedly connected to the filter plate (8); a rectangular protrusion is provided on one side of the filter plate (8) along the radial line of the outer tube (4); and the outer tube (4) A plurality of fixed blocks (9) are fixedly connected to the right side of the outer surface, and a sealing cylinder (10) surrounding the sampling cylinder (5) is fixedly connected to one side of the fixed block (9). The inner sealing sleeve of the sealing cylinder (10) is provided with a spring (14) and a sealing column (11). The outer end of the sealing column (11) passes through the rectangular protrusion and is fixedly connected to the limit block (12). The two ends of the spring (14) are elastically connected to the sealing cylinder (10) and the inner end of the sealing column (11), respectively. The inner end of the sealing column (11) is provided with an oil hole (15), and the inner cavity of the sealing cylinder (10) is filled with kerosene (16).

2. The sampling device for geological engineering water body detection according to claim 1 is characterized in that: The top of the inner wall of the sampling cylinder (5) is fixedly connected to a fixed cylinder (20), the inner wall of the fixed cylinder (20) is movably sleeved with a moving column (22), the top of the outer surface of the moving column (22) is fixedly installed with a limit plate (24), a piston (25) is sealingly sleeved between the inner wall of the sampling cylinder (5) and the outer surface of the moving column (22), a seal (28) is installed at the bottom of the outer surface of the moving column (22), a fixed ring (26) is fixedly connected to the bottom of the inner wall of the sampling cylinder (5), the inner ring surface of the fixed ring (26) is provided with a plurality of groups of grooves (27), the outer surface of the seal (28) is provided with a plurality of groups of sealing holes (29), and the inner wall of the sealing hole (29) is provided with a slideway (29) penetrating to the bottom of the seal (28). 30), a fixing column (31) and a second spring (32) are movably sleeved inside the sealing hole (29), and the two ends of the second spring (32) are elastically connected to the sealing hole (29) and the fixing column (31) respectively. A connecting rope (33) is fixedly connected to the inner end of the fixing column (31), and the other end of the connecting rope (33) passes through the slideway (30) and is fixedly connected to a connecting ring (34) located at the bottom of the sealing opening (28). The outer surface of the sealing opening (28) and the inner ring surface of the fixing ring (26) are both provided with inclined surfaces that are adapted to abut against each other. The sealing hole (29) is parallel to the axis of the card slot (27), and the axes of the sealing hole (29), the fixing column (31) and the card slot (27) are all inclined downward relative to the horizontal plane.

3. The sampling device for geological engineering water body detection according to claim 2 is characterized in that: The piston (25) abuts against the top of the fixed ring (26); the axial cross-section of the movable column (22) is in a "T" shape; and the seal (28) is fixedly mounted on the top of the lower end of the movable column (22).

4. The sampling device for geological engineering water body detection according to claim 3 is characterized by: When the seal (28) moves upward to a height flush with the top of the fixing ring (26), the fixing column (31) is pressed by the second spring (32) and is firmly clamped in the clamping groove (27).

5. The sampling device for geological engineering water body detection according to claim 4 is characterized in that: A limiting groove (23) is provided at the top of the movable column (22); the bottom of the inner wall of the slideway (30) is fixedly connected to the limiting column (21); the limiting column (21) is adapted to be inserted into the limiting groove (23); and the cross-sectional shape of the limiting column (21) when viewed from above is a square.

6. The sampling device for geological engineering water body detection according to claim 5 is characterized by: The sealing column (11) and the limiting block (12) are capable of rotating around the axis of the outer cylinder (4), and a distance is left between the limiting block (12) and the rectangular protrusion of the filter plate (8) under initial conditions.

7. The sampling device for geological engineering water body detection according to claim 6 is characterized by: When the sealing plate (7) and the filter plate (8) under the initial condition move to the rightmost side, the sealing plate (7) is completely sealed to the water inlet groove (6).

8. The sampling device for geological engineering water body detection according to claim 7 is characterized by: The sealing cylinder (10), the sealing column (11) and the limiting block (12) are each provided in three groups and are longitudinally equidistantly distributed along the axis of the outer cylinder (4); the outer surface of the sealing column (11) is fixedly connected to a limiting ring (13), and the limiting ring (13) abuts against one side of the filter plate (8).

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