Water quality detection sampling device and sampling method for hydraulic engineering

Abstract

The invention discloses a water conservancy project water quality detection sampling device and a sampling method, and relates to the technical field of water quality detection sampling, the water conservancy project water quality detection sampling device comprises a sampling barrel, a fractional sampling mechanism is arranged in the sampling barrel, and sampling grooves are symmetrically formed in the inner wall of the sampling barrel corresponding to the fractional sampling mechanism; the inner wall of the sampling barrel is provided with a guide groove corresponding to the fractional sampling mechanism, the fractional sampling mechanism comprises a rotating part and a lifting part, and the rotating part is in transmission with the lifting part. According to the sampling device, the blocking block can be controlled to rotate through the driving motor, so that the blocking ring rotates and rises to release the sampling groove in one side in the sampling barrel under the cooperation of the ball and the guide groove, and the sampling state of the sampling grooves in the two sides in the sampling barrel can be controlled through forward and reverse rotation of the blocking block; the purpose of continuously sampling samples of underground water at different water levels is achieved, and the sampling efficiency of the device is further ensured.

Description

Technical Field

[0001] The invention relates to the technical field of water quality detection and sampling, in particular to a water quality detection and sampling device and a sampling method for a water conservancy project. Background Art

[0002] Water quality is a vital aspect in water conservancy project construction. The management and protection of water resources require water quality testing to ensure the safety and sustainable use of water sources. The main purpose of water quality testing is to evaluate the chemical, biological and physical properties of water bodies to ensure that the water quality meets the needs of water resource protection and water conservancy project construction. Through water quality testing, problems and abnormalities in water bodies can be discovered in a timely manner, and appropriate measures can be taken to adjust and manage them to ensure the sustainable use of water resources. Sampling and analysis method is the basic method of water quality testing. By collecting water samples, testing the collected samples in the laboratory, and analyzing physical, chemical and biological indicators, the water quality can be evaluated.

[0003] For example, a water quality detection sampling device for a water conservancy project with publication number CN117232900B, it can be seen that when the sampling barrel of the water quality detection sampling device moves downward to the sampling depth relative to the shell under water pressure, the sampling port can cooperate with the water inlet to realize automatic water inlet sampling. And a water quality detection system for a water conservancy project with publication number CN116124520A, it can be seen that the water quality detection system can, when water quality detection sampling is required, drive the servo motor to make the rotating shaft drive the water sampling cylinder to deflect, thereby using the water sampling cylinder to draw water, and through the cooperation between the water sampling cylinder and the water pipe, the drawn water is collected, which is convenient for subsequent detection, thereby improving the convenience of water drawing.

[0004] However, when sampling, only water at a certain water level can be sampled at a time, and samples of groundwater at different water levels cannot be sampled continuously for multiple times, which makes the sampling efficiency low. At the same time, with the progress of industry, social development and the intensification of human activities, a large amount of pollutants have entered drinking water sources such as lakes and rivers. During the sampling process, the above-mentioned device is often prone to sampling a large amount of impurities and aquatic organisms in the native water body at the same time, which makes the subsequent test results prone to errors, affecting the accuracy of the test. In severe cases, the sampling port will even be blocked, making it impossible to sample, which will affect the sampling efficiency. Summary of the invention

[0005] The object of the present invention is to provide a water quality detection sampling device and a sampling method for a water conservancy project to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for sampling water quality for water conservancy projects, characterized in that it comprises the following steps: Sampling preparation: first, tie the rope to the lifting ear, then place the sampling tube in the required water area and sink it to the required water level, control the driving motor to rotate in a certain direction, and make the blocking ring drive the blocking block to rotate and rise by sliding the ball on the inner wall of the guide groove. At this time, the blocking block will gradually stop blocking the sampling groove. Through the opening on the outer wall of the blocking ring, the sampling groove on one side of the sampling tube can be opened, and then the sampling state of the sampling grooves on both sides of the sampling tube can be controlled by the forward and reverse rotation of the blocking block; Peeling and clearing: When the blockage rises, it can synchronously drive the connecting column to rise on the inner wall of the rotary rod. At this time, the cooperation between the guide block and the spiral groove will make the rotary rod rotate to cut and crush the large impurities in the water. At this time, the external water will be added into the booster cylinder. When the blockage falls, it will synchronously drive the extrusion column to fall and accurately insert into the booster cylinder, so that the water inside the booster cylinder is squeezed and sprayed out from the nozzle under pressure; Sampling is completed: the impurities in the water are blocked by the interception net. After the sampling is completed, the block can be lowered to clean the impurities remaining on the surface of the interception net. When the sampling of the two sampling slots is completed, the device can be pulled out of the water area, and then the sampling cap can be unscrewed, and samples of different water levels can be taken out through the sampling port.

[0007] The above-mentioned water quality detection and sampling method for water conservancy projects is implemented through the following water quality detection and sampling device for water conservancy projects.

[0008] A water quality detection sampling device for a water conservancy project comprises a sampling barrel, wherein a sampling mechanism is arranged inside the sampling barrel, and sampling grooves are symmetrically opened on the inner wall of the sampling barrel corresponding to the sampling mechanism, and a guide groove is opened on the inner wall of the sampling barrel corresponding to the sampling mechanism.

[0009] The multiple sampling mechanism includes a rotating component and a lifting component, wherein the rotating component and the lifting component are in transmission with each other, so that when sampling is performed, the lifting component is controlled by the rotating component to control the opening of the sampling slot; The rotating component includes a driving rod, and a block is provided on the outer wall of the driving rod. A rotary cutting and clearing mechanism is provided on the outer wall of the driving rod. The rotary cutting and clearing mechanism is transmitted to the rotating component, and the rotary cutting and clearing mechanism is transmitted to the lifting component. When sampling, the rotary cutting and clearing mechanism can be used to cut, crush and spray out large impurities or aquatic organisms in the water.

[0010] Preferably, a driving motor is fixedly installed on the top of the sampling tube, and an output shaft at one end of the driving motor is fixedly connected to the top of the driving rod, the outer wall of the blocking block slides in fit with the inner wall of the sampling tube, and a through groove is opened through the interior of the blocking block, and the inner wall of the through groove slides in fit with the outer wall of the driving rod.

[0011] Preferably, the inner wall of the through groove is symmetrically provided with connecting grooves, the outer wall of the driving rod is symmetrically fixedly connected with a connecting rod corresponding to the connecting groove, and the outer wall of the connecting rod is fitted and slid with the inner wall of the connecting groove; The lifting component includes a blocking ring, and the top of the blocking ring is fixedly connected to the bottom of the blocking block, the outer wall of the blocking ring fits and slides with the inner wall of the sampling tube, and a ball is fixedly connected to the outer wall of the blocking ring, the outer wall of the ball fits and slides with the inner wall of the guide groove, and the inner wall of the guide groove is spiral, and the outer wall of the blocking ring is provided with a through opening corresponding to the sampling groove.

[0012] Preferably, the rotary cutting and clearing mechanism includes a connecting block, and one end of the connecting block is fixedly connected to the outer wall of the driving rod, the interior of the connecting block is rotatably connected to a rotating rod, and the bottom of the rotating rod is fixedly connected to a cutter, and an intercepting net is fixedly installed on the inner wall of the sampling groove.

[0013] Preferably, the inner wall of the rotary rod is slidably connected to a connecting column, and the top of the connecting column is fixedly connected to the bottom of the blocking block, the inner wall of the rotary rod is penetrated by a spiral groove, the outer wall of the connecting column is fixedly connected to a guide block corresponding to the spiral groove, and the outer wall of the guide block slides in contact with the inner wall of the spiral groove.

[0014] Preferably, a fixing plate is fixedly connected to the outer wall of the driving rod, a boosting cylinder is fixedly connected to the interior of the fixing plate, and a nozzle is fixedly connected to the bottom of the boosting cylinder.

[0015] Preferably, an inner wall of the boost cylinder is slidably connected with an extrusion column, and the top of the extrusion column is fixedly connected to the bottom of the block.

[0016] Preferably, a sampling port is fixedly connected to the outer wall of the sampling tube corresponding to the sampling groove, and the inner wall of the sampling port is communicated with the inner wall of the sampling groove, and a sampling cap is threadedly connected to the outer wall of the sampling port.

[0017] Preferably, a protective tube is fixedly connected to the top of the sampling tube, and a lifting ear is fixedly connected to the top of the protective tube.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. When sampling water, the blocking block can be controlled to rotate by driving the motor, so that with the cooperation of the ball and the guide groove, the blocking ring rotates and rises and releases the sampling slot on one side of the sampling tube, so that the sampling state of the sampling slots on both sides of the sampling tube can be controlled by the forward and reverse rotation of the blocking block, so as to achieve the purpose of continuous sampling of groundwater samples at different water levels, thereby ensuring the sampling efficiency of the device.

[0019] 2. When sampling water, the block can rise and fall, and the guide block and the spiral groove can cooperate to drive multiple cutters to rotate, so that large impurities or aquatic organisms in the water can be cut and crushed to avoid blockage at the sampling point. Impurities in the water can be blocked by the interception net to ensure the accuracy of subsequent detection.

[0020] 3. When sampling water, the block can be lowered to clean the impurities remaining on the surface of the interception net. At the same time, the water inside the booster cylinder can be pressurized and sprayed out from the nozzle under extrusion through the cooperation of the extrusion column and the booster cylinder. On the one hand, the surface of the rotating cutter can be cleaned to ensure the cutting effect of the cutter. On the other hand, the crushed large impurities or aquatic organisms can be sprayed out from the sampling cylinder, which further improves the cleanliness of the sampling cylinder and is beneficial to the subsequent sampling work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure inside the sampling tube of the present invention; Figure 3 It is a schematic diagram of the partial structure inside the sampling tube of the present invention; Figure 4 It is a structural schematic diagram of the fractional sampling mechanism of the present invention; Figure 5 It is a structural schematic diagram of the first part of the rotary cutting and clearing mechanism of the present invention; Figure 6 It is a structural schematic diagram of the second part of the rotary cutting and clearing mechanism of the present invention; Figure 7 It is a sampling flow chart of the present invention.

[0022] In the figure: 1. sampling cylinder; 3. sampling slot; 4. guide slot; 6. intercepting net; 7. sampling port; 8. sampling cap; 9. protective cylinder; 10. lifting ear; 2. batch sampling mechanism; 201. driving motor; 202. driving rod; 203. blocking block; 204. through slot; 205. connecting slot; 206. connecting rod; 207. blocking ring; 208. ball; 209. through port; 5. rotary cutting and clearing mechanism; 501. connecting block; 502. rotary rod; 503. cutter; 504. connecting column; 505. spiral groove; 506. guide block; 507. fixing plate; 508. booster cylinder; 509. nozzle; 510. extrusion column. DETAILED DESCRIPTION

[0023] 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.

[0024] For example, see Figure 1-7 The present invention provides a water quality detection sampling device and a sampling method for a water conservancy project, wherein the water quality detection sampling device for a water conservancy project comprises a sampling tube 1, a sampling mechanism 2 is arranged inside the sampling tube 1, and a sampling groove 3 is symmetrically opened on the inner wall of the sampling tube 1 corresponding to the sampling mechanism 2, and a guide groove 4 is opened on the inner wall of the sampling tube 1 corresponding to the sampling mechanism 2; The batch sampling mechanism 2 includes a rotating component and a lifting component, and the rotating component and the lifting component are in transmission. Further, the rotating component includes a driving rod 202, and the outer wall of the driving rod 202 is provided with a blocking block 203, and the top of the sampling tube 1 is fixedly installed with a driving motor 201, and then the output shaft at one end of the driving motor 201 is fixedly connected to the top of the driving rod 202, and the outer wall of the blocking block 203 is fitted and slid with the inner wall of the sampling tube 1, and a through groove 204 is opened inside the blocking block 203, and the inner wall of the through groove 204 is fitted and slid with the outer wall of the driving rod 202; In this embodiment, when sampling water, firstly, the top of the sampling tube 1 is fixedly connected with a protective tube 9, and the top of the protective tube 9 is fixedly connected with a lifting lug 10, so that the rope can be tied in the lifting lug 10, and then the device is placed in the required water area and sunk to the required water level, and the driving motor 201 is protected by the protective tube 9; The water quality testing and sampling method for water conservancy projects includes the following steps: After sinking to the required water level, the driving motor 201 is started and controlled to rotate in a certain direction. The output shaft at one end of the driving motor 201 is fixedly connected to the top of the driving rod 202, so that the driving motor 201 can drive the driving rod 202 to rotate. Then, a through groove 204 is opened through the inside of the blocking block 203, and the inner wall of the through groove 204 fits and slides with the outer wall of the driving rod 202, and the inner wall of the through groove 204 is symmetrically provided with connecting grooves 205. At the same time, the outer wall of the driving rod 202 is symmetrically fixedly connected with a connecting rod 206 corresponding to the connecting groove 205, and the outer wall of the connecting rod 206 fits and slides with the inner wall of the connecting groove 205, so that the driving rod 202 can drive the blocking block 203 to rotate through the connection between the connecting rod 206 and the connecting groove 205, without affecting the blocking block 203 sliding up and down on the outer wall of the driving rod 202. Then, the top of the blocking ring 207 is fixedly connected to the bottom of the blocking block 203, and the outer wall of the blocking ring 207 slides in contact with the inner wall of the sampling tube 1, so that the blocking block 203 can rotate the blocking ring 207 in the same direction. Then, the outer wall of the blocking ring 207 is fixedly connected to the outer wall of the blocking ring 207, and the outer wall of the ball 208 slides in contact with the inner wall of the guide groove 4, and the inner wall of the guide groove 4 is spiral, so that when the blocking ring 207 rotates, the ball 208 The blocking ring 207 slides on the inner wall of the guide groove 4, so that the blocking ring 207 drives the blocking block 203 to rotate and rise. At this time, the blocking block 203 will gradually stop blocking the sampling groove 3, and will be blocked by the outer wall of the blocking ring 207. At this time, a through hole 209 is opened on the outer wall of the blocking ring 207 corresponding to the sampling groove 3, so that the sampling groove 3 on one side of the sampling tube 1 can be opened, and then the sampling state of the sampling grooves 3 on both sides of the sampling tube 1 can be controlled by the forward and reverse rotation of the blocking block 203; As described above, when sampling the water body, the blocking block 203 can be controlled to rotate by the driving motor 201, so that with the cooperation of the ball 208 and the guide groove 4, the blocking ring 207 rotates and rises and releases the sampling groove 3 on one side of the sampling tube 1, so that the sampling state of the sampling grooves 3 on both sides of the sampling tube 1 can be controlled by the forward and reverse rotation of the blocking block 203, so as to achieve the purpose of continuous sampling of groundwater samples at different water levels, thereby ensuring the sampling efficiency of the device.

[0025] When sampling a water body, firstly tie the rope to the lifting ear 10, then place the device in the required water area and sink it to the required water level, then start the driving motor 201, control the driving motor 201 to rotate in a certain direction, so that the driving motor 201 can drive the driving rod 202 to rotate, and through the connection between the connecting rod 206 and the connecting groove 205, the driving rod 202 can drive the blocking block 203 to rotate without affecting the blocking block 203 sliding up and down on the outer wall of the driving rod 202; Then, the blocking ring 207 is driven to rotate in the same direction by the rotation of the blocking block 203, and the ball 208 slides on the inner wall of the guide groove 4, so that the blocking ring 207 drives the blocking block 203 to rotate and rise. At this time, the blocking block 203 will gradually stop blocking the sampling groove 3, and the outer wall of the blocking ring 207 will block it. At this time, a through hole 209 is opened on the outer wall of the blocking ring 207 corresponding to the sampling groove 3, so that the sampling groove 3 on one side of the sampling tube 1 can be opened, and then the sampling state of the sampling grooves 3 on both sides of the sampling tube 1 can be controlled by the forward and reverse rotation of the blocking block 203; Then, when the blocking block 203 rises, the connecting column 504 can be synchronously driven to rise on the inner wall of the rotating rod 502. At this time, the rotating rod 502 can be rotated through the cooperation between the guide block 506 and the spiral groove 505, thereby driving the multiple cutters 503 to rotate, so that large impurities or aquatic organisms in the water body can be cut and crushed; During the sampling process, impurities in the water are blocked by the intercepting net 6. When the sampling of a certain sampling slot 3 is completed, the blocking block 203 is controlled to descend by the driving motor 201. At this time, the cutter 503 rotates and cuts again. During this process, the blocking block 203 can be lowered so that the impurities remaining on the surface of the intercepting net 6 can be cleaned by the blocking block 203.

[0026] Embodiment 2, based on the above embodiment: The outer wall of the driving rod 202 is provided with a peeling and clearing mechanism 5, which is in transmission with the rotating component and the peeling and clearing mechanism 5 is in transmission with the lifting component.

[0027] Furthermore, the peeling and clearing mechanism 5 includes a connecting block 501, and one end of the connecting block 501 is fixedly connected to the outer wall of the driving rod 202, and the inside of the connecting block 501 is rotatably connected to a rotating rod 502, and then the bottom of the rotating rod 502 is fixedly connected to a cutter 503, and the inner wall of the sampling slot 3 is fixedly installed with an interception net 6; In this embodiment, when sampling the water body, when the block 203 is rising, the connecting block 501 is connected to the rotating rod 502 through internal rotation, and the bottom of the rotating rod 502 is fixedly connected to the cutter 503, and the inner wall of the rotating rod 502 is slidably connected to the connecting column 504, and the top of the connecting column 504 is fixedly connected to the bottom of the block 203. Since the block 203 is driven to rotate by the driving rod 202, the rotation speed of the driving rod 202 is the same as the rotation speed of the block 203. Therefore, when the block 203 rises, it can synchronously drive the connecting rod 502 to rotate. The connecting column 504 rises on the inner wall of the rotating rod 502, and a spiral groove 505 is formed through the inner wall of the rotating rod 502. A guide block 506 is fixedly connected to the outer wall of the connecting column 504 corresponding to the spiral groove 505, and the outer wall of the guide block 506 slides in contact with the inner wall of the spiral groove 505. When the connecting column 504 rises, the rotating rod 502 can be rotated through the cooperation between the guide block 506 and the spiral groove 505, and then the multiple cutters 503 can be driven to rotate, so that large impurities or aquatic organisms in the water body can be cut and crushed. During the sampling process, an interception net 6 is fixedly installed on the inner wall of the sampling slot 3, so that impurities in the water body can be blocked by the interception net 6. When the sampling of a certain sampling slot 3 is completed, the blocking block 203 is controlled to descend by the driving motor 201, and the cutter 503 is rotated and cut again. During this process, the blocking block 203 can be descended to clean the impurities remaining on the surface of the interception net 6. Next, the outer wall of the driving rod 202 is fixedly connected with a fixing plate 507, and the inside of the fixing plate 507 is fixedly connected with a booster cylinder 508, and the bottom of the booster cylinder 508 is fixedly connected with a nozzle 509, and at the same time, the inner wall of the booster cylinder 508 is slidably connected with an extrusion column 510, and the top of the extrusion column 510 is fixedly connected to the bottom of the block 203, so that when the block 203 rises, the extrusion column 510 will be driven to rise synchronously, and the external water will be drawn into the booster cylinder 508 from the nozzle 509, or, in this case, the length of the extrusion column 510 and the booster cylinder 508 is less than the rising distance of the block 203, so after the extrusion column 510 rises for a certain distance, it will be separated from the booster cylinder 508, and the booster cylinder 508 will be automatically replenished by the external water; When the block 203 descends, it will synchronously drive the squeezing column 510 to descend and accurately insert into the booster cylinder 508, so that the water inside the booster cylinder 508 is pressurized and ejected from the nozzle 509. On the one hand, it can clean the surface of the rotating cutter 503 to ensure the cutting effect of the cutter 503, and on the other hand, it can eject the crushed large impurities or aquatic organisms from the sampling cylinder 1. Then, when the sampling of the two sampling slots 3 is completed, the device can be pulled out of the water area, and a sampling port 7 is fixedly connected to the sampling slot 3 through the outer wall of the sampling tube 1, and the inner wall of the sampling port 7 is connected to the inner wall of the sampling slot 3, and the outer wall of the sampling port 7 is threadedly connected with a sampling cap 8, so that the sampling cap 8 can be screwed out, and samples of different water levels can be taken out through the sampling port 7, which is convenient for subsequent detection; As described above, when sampling the water body, the blocking block 203 can rise and fall, so that the multiple cutters 503 can be driven to rotate in cooperation with the guide block 506 and the spiral groove 505, so that large impurities or aquatic organisms in the water body can be cut and crushed to avoid blockage at the sampling point, and impurities in the water body can be blocked by the interception net 6 to ensure the accuracy of subsequent detection.

[0028] 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 water quality detection sampling device for a water conservancy project, comprising a sampling tube (1), characterized in that: The sampling tube (1) is provided with a sampling mechanism (2) inside, and a sampling groove (3) is symmetrically provided on the inner wall of the sampling tube (1) corresponding to the sampling mechanism (2), and a guide groove (4) is provided on the inner wall of the sampling tube (1) corresponding to the sampling mechanism (2); The multiple sampling mechanism (2) comprises a rotating component and a lifting component, wherein the rotating component and the lifting component are in transmission with each other, so that when sampling is performed, the lifting component is controlled by the rotating component to control the opening of the sampling slot (3); The rotating component comprises a driving rod (202), and a blocking block (203) is provided on the outer wall of the driving rod (202). A rotary cutting and clearing mechanism (5) is provided on the outer wall of the driving rod (202). The rotary cutting and clearing mechanism (5) is in transmission with the rotating component, and the rotary cutting and clearing mechanism (5) is in transmission with the lifting component, so that when sampling is performed, the rotary cutting and clearing mechanism (5) is used to cut and crush large impurities in the water body and eject them.

2. A water quality detection sampling device for water conservancy projects according to claim 1, characterized in that: A driving motor (201) is fixedly mounted on the top of the sampling tube (1), and an output shaft at one end of the driving motor (201) is fixedly connected to the top of the driving rod (202); the outer wall of the blocking block (203) slides in contact with the inner wall of the sampling tube (1), and a through groove (204) is provided through the inside of the blocking block (203); the inner wall of the through groove (204) slides in contact with the outer wall of the driving rod (202).

3. A water quality detection sampling device for water conservancy projects according to claim 2, characterized in that: The inner wall of the through groove (204) is symmetrically provided with connecting grooves (205), and the outer wall of the driving rod (202) is symmetrically fixedly connected with a connecting rod (206) corresponding to the connecting groove (205), and the outer wall of the connecting rod (206) is fitted and slidably connected with the inner wall of the connecting groove (205).

4. A water quality detection sampling device for water conservancy projects according to claim 3, characterized in that: The lifting component comprises a blocking ring (207), and the top of the blocking ring (207) is fixedly connected to the bottom of the blocking block (203), the outer wall of the blocking ring (207) is fitted and slid with the inner wall of the sampling tube (1), and the outer wall of the blocking ring (207) is fixedly connected with a ball (208), the outer wall of the ball (208) is fitted and slid with the inner wall of the guide groove (4), and the inner wall of the guide groove (4) is spiral, and the outer wall of the blocking ring (207) is provided with a through opening (209) corresponding to the sampling groove (3); The rotary cutting and clearing mechanism (5) comprises a connecting block (501), one end of which is fixedly connected to the outer wall of the driving rod (202), the interior of the connecting block (501) is rotatably connected to a rotating rod (502), and the bottom of the rotating rod (502) is fixedly connected to a cutter (503), and an intercepting net (6) is fixedly installed on the inner wall of the sampling slot (3); The inner wall of the rotary rod (502) is slidably connected to a connecting column (504), and the top of the connecting column (504) is fixedly connected to the bottom of the block (203). The inner wall of the rotary rod (502) is penetrated by a spiral groove (505); A guide block (506) is fixedly connected to the outer wall of the connecting column (504) corresponding to the spiral groove (505), and the outer wall of the guide block (506) is fitted and slidably connected to the inner wall of the spiral groove (505).

5. A water quality detection sampling device for water conservancy projects according to claim 4, characterized in that: The outer wall of the driving rod (202) is fixedly connected to a fixing plate (507), the interior of the fixing plate (507) is fixedly connected to a booster cylinder (508), and the bottom of the booster cylinder (508) is fixedly connected to a nozzle (509).

6. A water quality detection sampling device for water conservancy projects according to claim 5, characterized in that: The inner wall of the boost cylinder (508) is slidably connected to an extrusion column (510), and the top of the extrusion column (510) is fixedly connected to the bottom of the blocking block (203).

7. A water quality detection sampling device for water conservancy projects according to claim 4, characterized in that: The outer wall of the sampling tube (1) is fixedly connected to a sampling port (7) corresponding to the sampling groove (3), and the inner wall of the sampling port (7) is connected to the inner wall of the sampling groove (3). The outer wall of the sampling port (7) is threadedly connected to a sampling cap (8). The top of the sampling tube (1) is fixedly connected to a protective tube (9), and the top of the protective tube (9) is fixedly connected to a lifting ear (10).

8. A sampling method for the water quality detection sampling device of a hydraulic project according to claim 7, characterized in that: The following steps are involved: S1: Sampling preparation: first, tie the rope to the lifting ear (10), then place the sampling tube (1) in the required water area and sink it to the required water level, control the driving motor (201) to rotate in a certain direction, and make the ball (208) slide on the inner wall of the guide groove (4), so that the blocking ring (207) drives the blocking block (203) to rotate and rise, at which time the blocking block (203) will gradually stop blocking the sampling groove (3), and the outer wall of the blocking ring (207) is provided with a through hole (209), so that the sampling groove (3) on one side of the sampling tube (1) can be opened, and then the sampling state of the sampling grooves (3) on both sides of the sampling tube (1) can be controlled by the forward and reverse rotation of the blocking block (203); S2: Peeling and clearing: When the block (203) rises, it can synchronously drive the connecting column (504) to rise on the inner wall of the rotating rod (502). At this time, the cooperation between the guide block (506) and the spiral groove (505) causes the rotating rod (502) to rotate, thereby cutting and crushing large impurities in the water body. At this time, the external water body will be replenished into the booster cylinder (508). When the block (203) descends, it will synchronously drive the extrusion column (510) to descend and accurately insert into the booster cylinder (508), so that the water inside the booster cylinder (508) is pressurized and ejected from the nozzle (509) under extrusion; S3: Sampling completed: Impurities in the water body are blocked by the interception net (6). After the sampling is completed, the blocking block (203) is lowered so that the blocking block (203) can clean the impurities remaining on the surface of the interception net (6). When the two sampling slots (3) have completed sampling, the device is pulled out of the water area, and then the sampling cap (8) is unscrewed, and samples at different water levels are taken out through the sampling port (7).

Images