Water quality sampling device for hydraulic engineering monitoring

Abstract

The application relates to the field of water quality detection sampling, in particular to a water quality sampling device for water conservancy engineering monitoring, which comprises a moving unit, an anti-blocking unit arranged on the moving unit, a sampling unit arranged on the anti-blocking unit, and a sampling control unit arranged on the sampling unit; the sampling unit comprises a water storage cylinder arranged on the anti-blocking unit, a water inlet assembly arranged on the water storage cylinder, a piston one arranged on the water storage cylinder, and a clamping block arranged on the water storage cylinder; the sampling control unit comprises a linear motor arranged on the moving unit, a piston two arranged on the linear motor, a sealing plate arranged on the moving unit and matched with the clamping block, and a rotating assembly arranged on the sealing plate and matched with the piston two; through the arrangement of multiple sampling units, the sealing plate is adjusted by rotating in cooperation with the movement of the piston two, so that the device can continuously sample at different depths and positions, the sampling efficiency is remarkably improved, and the mixing of samples at different sampling points is effectively prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water quality detection sampling, in particular to a water quality sampling device for water conservancy engineering monitoring. BACKGROUND

[0002] In water conservancy engineering, water quality monitoring is an important link to protect water resources safety and protect water ecological environment. However, the existing water quality sampling device can usually only realize single sampling task or small range sampling, and cannot continuously sample at different positions and depths in the water area, resulting in low sampling efficiency, and continuous back and forth operation is easy to cause the mixed situation of collected samples, which is difficult to accurately reflect the water quality condition. SUMMARY

[0003] In view of the above or the problem that the sampling device in the prior art cannot continuously sample at different positions and depths in the water area, resulting in low sampling efficiency, and continuous back and forth operation is easy to cause the mixed situation of collected samples, which is difficult to accurately reflect the water quality condition, the present application is proposed.

[0004] Therefore, the purpose of the present application is to provide a water quality sampling device for water conservancy engineering monitoring.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a mobile unit, an anti-blocking unit arranged on the mobile unit, a sampling unit arranged on the anti-blocking unit, and a sampling control unit arranged on the sampling unit; the sampling unit comprises a water storage cylinder arranged on the anti-blocking unit, a water inlet assembly arranged on the water storage cylinder, a piston one arranged on the water storage cylinder, and a clamping block arranged on the water storage cylinder; the sampling control unit comprises a linear motor arranged on the mobile unit, a piston two arranged on the linear motor, a sealing plate arranged on the mobile unit and matched with the clamping block, and a rotating assembly arranged on the sealing plate and matched with the piston two.

[0006] As a preferred scheme of the water quality sampling device for water conservancy engineering monitoring of the present application, wherein: the anti-blocking unit comprises a connecting cylinder arranged on the mobile unit, an interception net arranged on the connecting cylinder, and a water power paddle arranged on the interception net.

[0007] As a preferred scheme of the water quality sampling device for water conservancy engineering monitoring of the present application, wherein: the sampling unit is arranged on the connecting cylinder and surrounds the central axis of the connecting cylinder; the connecting cylinder is provided with a mounting groove matched with the water storage cylinder, a connecting groove matched with the clamping block, and a fixing groove.

[0008] As a preferred scheme of the water quality sampling device for water conservancy engineering monitoring of the present application, wherein: the water inlet assembly comprises a connecting head arranged on the water storage cylinder, a water inlet pipe arranged on the connecting head, a protrusion arranged on the connecting head, and a plugging block arranged on the connecting head; the water storage cylinder is communicated with the interception net through the water inlet pipe.

[0009] As a preferred scheme of the water quality sampling device for water conservancy project monitoring, the piston two is slidably arranged on the connecting cylinder, and the connecting cylinder is provided with a pressure cavity matched with the piston two.

[0010] As a preferred scheme of the water quality sampling device for water conservancy project monitoring, the piston two is slidably arranged on the connecting cylinder, and the connecting cylinder is provided with a pressure cavity matched with the piston two.

[0011] As a preferred scheme of the water quality sampling device for water conservancy project monitoring, the piston two is slidably arranged on the connecting cylinder, and the connecting cylinder is provided with a pressure cavity matched with the piston two.

[0012] As a preferred scheme of the water quality sampling device for water conservancy project monitoring, the piston two is slidably arranged on the connecting cylinder, and the connecting cylinder is provided with a pressure cavity matched with the piston two.

[0013] As a preferred scheme of the water quality sampling device for water conservancy project monitoring, the piston two is slidably arranged on the connecting cylinder, and the connecting cylinder is provided with a pressure cavity matched with the piston two.

[0014] As a preferred scheme of the water quality sampling device for water conservancy project monitoring, the piston two is slidably arranged on the connecting cylinder, and the connecting cylinder is provided with a pressure cavity matched with the piston two.

[0015] The water quality sampling device for water conservancy project monitoring has the following advantages: through the arrangement of multiple sampling units and the rotation adjustment of the sealing plate by the movement of the piston two, the device can realize the independent control sampling of the multiple sampling units through the sampling control unit, and can realize the continuous sampling at different depths and positions in the target water area through the movement of the device, thereby avoiding the multiple back-and-forth movement of the device, significantly improving the sampling efficiency, effectively preventing the mixing of samples at different sampling points, and ensuring the accuracy of the sampling data. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 The overall structure diagram of the water quality sampling device for water conservancy monitoring.

[0018] Figure 2 The test structure diagram of the water quality sampling device for water conservancy monitoring.

[0019] Figure 3 The cross-sectional structure diagram of the anti-blocking unit of the water quality sampling device for water conservancy monitoring.

[0020] Figure 4 The structure diagram of the water storage cylinder of the water quality sampling device for water conservancy monitoring.

[0021] Figure 5 The cross-sectional structure diagram of the connecting cylinder of the water quality sampling device for water conservancy monitoring.

[0022] Figure 6 The cross-sectional structure diagram of the water storage cylinder of the water quality sampling device for water conservancy monitoring.

[0023] Figure 7 The structure diagram of the sampling control unit of the water quality sampling device for water conservancy monitoring.

[0024] Figure 8 The structure diagram of the piston two of the water quality sampling device for water conservancy monitoring.

[0025] Figure 9 The structure diagram of the sealing plate of the water quality sampling device for water conservancy monitoring.

[0026] Figure 10 The structure diagram of the rotating assembly of the water quality sampling device for water conservancy monitoring.

[0027] Figure 11 The cross-sectional structure diagram of the fixed shaft of the water quality sampling device for water conservancy monitoring.

[0028] In the figure: 1. Moving unit; 11. Main body; 12. Power blade; 13. Support frame; 2. Anti-blocking unit; 21. Connecting cylinder; 211. Mounting slot; 212. Connecting slot; 213. Fixed slot; 214. Pressure chamber; 22. Intercepting net; 23. Hydrodynamic blade; 3. Sampling unit; 31. Water storage cylinder; 32. Water inlet assembly; 321. Connecting head; 322. Water inlet pipe; 323. Protrusion; 324. Blocking block; 33. Piston 1; 34. Block; 4. Sampling control unit; 41. Linear motor; 42. Piston 2; 421. Connecting sleeve; 422. Internal thread; 43. Sealing plate; 431. Notch; 44. Rotating assembly; 441. Connecting rod; 442. Fixed shaft; 4421. Extrusion slot; 443. Movable sleeve; 4431. External thread; 4432. Abutment block; 4433. Storage slot. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] Example 1, with reference to Figures 1-7 , which is the first embodiment of the present invention, provides a water quality sampling device for monitoring water conservancy projects, comprising a mobile unit 1 for driving the device to move in water areas to facilitate sampling operations, an anti-blocking unit 2 provided on the mobile unit 1, a sampling unit 3 provided on the anti-blocking unit 2, and a sampling control unit 4 provided on the sampling unit 3. The anti-blocking unit 2 is used to mount the sampling unit 3, and the movement of the sampling control unit 4 drives the sampling unit 3 to collect water quality.

[0031] The sampling unit 3 includes a water storage cylinder 31 provided on the anti-clogging unit 2 for storing sampled water, a water inlet assembly 32 provided on the water storage cylinder 31 for water to enter the water storage cylinder 31, a piston 1 33 provided on the water storage cylinder 31 for cooperating with the movement of the sampling control unit 4 to generate a negative pressure area inside the water storage cylinder 31, and to absorb water through the water inlet assembly 32, a sealing ring provided on the piston 1 33 for cooperating with the water storage cylinder 31, and a clamping block 34 provided on the water storage cylinder 31 for mounting the sampling unit 3 on the anti-clogging unit 2 for easy disassembly;

[0032] The sampling control unit 4 comprises a linear motor 41 arranged on the moving unit 1 for generating power, a piston two 42 arranged on the linear motor 41 for moving back and forth in cooperation with the linear motor 41, a sealing plate 43 arranged on the moving unit 1 and cooperating with the clamping block 34 for connecting the space between the piston one 33 and the piston two 42, through the movement of the piston two 42, the pressure of the space between the piston two 42 and the piston one 33 changes, thereby driving the piston one 33 to move in the water storage cylinder 31, driving the water storage cylinder 31 to generate a negative pressure area to suck water into the water storage cylinder 31 for sampling operation, and a rotating assembly 44 arranged on the sealing plate 43 and cooperating with the piston two 42 for rotating and adjusting the sealing plate 43 in cooperation with the movement of the piston two 42, facilitating the piston two 42 to drive other sampling units 3 to sample, realizing continuous sampling operation at different positions.

[0033] The moving unit 1 comprises a main body 11 arranged on the connecting cylinder 21 for the operation of the device, the inside of the moving unit 1 is provided with a battery, a vision system and a control system for controlling the movement of the whole device, a handle is arranged on the moving unit 1 for personnel to grasp, a power paddle 12 is arranged on the main body 11 for generating power to drive the whole device to move to different positions in the water area for water quality sampling, and a support frame 13 is arranged on the main body 11 for stable support of the whole device, which plays a role in protecting the device.

[0034] In summary, the staff first places the device in the water area that needs to be sampled, at this time the power paddle 12 is started to drive the device to move to the specified sampling area, at this time the linear motor 41 is started to drive the piston two 42 to move towards the piston one 33, when the piston two 42 passes through the rotating assembly 44, at this time the piston two 42 drives the sealing plate 43 to rotate, when the piston two 42 completely passes through the rotating assembly 44, at this time the piston one 33 on one of the water storage cylinders 31 is connected with the piston two 42 through the sealing plate 43, at this time the piston two 42 moves towards the piston one 33, the space between the piston two 42 and the piston one 33 decreases to form a high pressure area, driving the piston one 33 to move towards the water inlet assembly 32 to discharge the air in the water storage cylinder 31, at this time the linear motor 41 drives the piston two 42 to move back, at this time the space between the piston two 42 and the piston one 33 increases to form a negative pressure area, driving the piston one 33 to move back, at this time the space between the water inlet assembly 32 and the piston one 33 increases to form a negative pressure area, driving water to enter the water storage cylinder 31 for collection, at this time the piston two 42 moves back through the rotating assembly 44 without affecting the state of the sealing plate 43;

[0035] When the piston two 42 again passes through the rotating assembly 44, the linear motor 41 drives the piston two 42 to move towards the piston one 33 at this time, and the piston two 42 moves to drive the sealing plate 43 to rotate through the rotating assembly 44. When the piston two 42 again passes through the rotating assembly 44, the sealing plate 43 just seals the piston one 33 on the water storage cylinder 31 which has completed sampling, and the piston one 33 on the next set of water storage cylinders 31 is communicated with the piston two 42, and then the above operation is repeated to realize continuous sampling at different positions in the water area, effectively improve the efficiency of water quality collection, and through different position water samples, the result of water quality evaluation is more accurate.

[0036] Embodiment 2, refer to Figures 1-7 , the second embodiment of the application, which is different from the previous embodiment: collecting water quality. Compared with embodiment 1, further, wherein the anti-blocking unit 2 comprises a connecting cylinder 21 arranged on the moving unit 1, a connecting cylinder 21 for installing the water storage cylinder 31, an intercepting net 22 arranged on the connecting cylinder 21, for intercepting water grass, floating matter and other water in the water, and a water power paddle 23 arranged on the intercepting net 22, for rotating with the power generated by the device or the impact force of water flow to scrape the intercepting net 22, preventing the mesh of the intercepting net 22 from being blocked, affecting the sampling operation of the water storage cylinder 31.

[0037] Wherein, the sampling unit 3 is arranged on the connecting cylinder 21 around the central axis of the connecting cylinder 21, and each group of sampling unit 3 is arranged with different numbers for distinguishing water sampling at different positions, and the sampling unit 3 is arranged around the connecting cylinder 21, which is convenient for adjusting the communication and sealing of the piston one 33 and the piston two 42 when the sealing plate 43 rotates;

[0038] The connecting cylinder 21 is provided with a mounting groove 211 matched with the water storage cylinder 31 for installing the water storage cylinder 31, a connecting groove 212 and a fixing groove 213 matched with the clamping block 34, the connecting groove 212 is communicated with the fixing groove 213, the connecting groove 212 is used for aligning the water storage cylinder 31 and the mounting groove 211, the water storage cylinder 31 is pushed into the mounting groove 211 through the butt joint of the clamping block 34 and the connecting groove 212, and the fixing groove 213 is used for the clamping block 34 to slide to the bottom in the connecting groove 212, at this time, the water storage cylinder 31 is rotated to make the clamping block 34 enter the fixing groove 213 to complete the fixation of the water storage cylinder 31.

[0039] The water inlet assembly 32 comprises a connecting head 321 arranged on the water storage cylinder 31, which is used to connect one end of the water storage cylinder 31 to allow water to enter the water storage cylinder 31, the water storage cylinder 31 and the connecting head 321 are connected by threads, and a sealing surface is arranged to enhance the sealing performance, a water inlet pipe 322 arranged on the connecting head 321 is used to discharge air in the water storage cylinder 31 and allow water to enter the water storage cylinder 31, a protrusion 323 arranged on the connecting head 321 facilitates the rotation of the connecting head 321 by personnel, and a blocking block 324 arranged on the connecting head 321 is used to close the inside of the water storage cylinder 31 from the outside, preventing water on the surface of the water area from entering the water storage cylinder 31 through the water inlet pipe 322 when the equipment is submerged in water.

[0040] The water storage cylinder 31 is in communication with the interception net 22 through the water inlet pipe 322, and the interception net 22 is used to block large particles in the water to prevent the water inlet pipe 322, so that the water can smoothly enter the water storage cylinder 31 through the water inlet pipe 322 for water quality sampling.

[0041] The remaining structures are the same as those of Example 1.

[0042] In summary, when the linear motor 41 drives the piston two 42 to move in the direction of the piston one 33, the space between the piston two 42 and the piston one 33 decreases to form a high-pressure area, which drives the piston one 33 to move in the direction of the connecting head 321, at this time, the space between the connecting head 321 and the piston one 33 decreases, the air pressure increases, at this time, the high pressure pushes the blocking block 324 out of the water inlet pipe 322, and drives the air in the water storage cylinder 31 to be discharged;

[0043] When the linear motor 41 drives the piston two 42 to move back, at this time, the space between the piston two 42 and the piston one 33 increases to form a negative pressure area, which drives the piston one 33 to move back, at this time, the space between the connecting head 321 and the piston one 33 increases to form a negative pressure area, which drives water to enter the water storage cylinder 31 through the water inlet pipe 322, so that the pressure on both sides of the piston one 33 reaches balance, and the sampling operation at this position is completed.

[0044] Example 3, refer to Figures 1-11 , which is different from the previous example: continuous sampling operation. Compared with Example 2, further, the piston two 42 is slidingly arranged on the connecting cylinder 21, the connecting cylinder 21 is provided with a pressure chamber 214 cooperating with the piston two 42, the piston two 42 is provided with a sealing ring cooperating with the pressure chamber 214, and the piston two 42 moves back and forth in the pressure chamber 214 to control the air pressure between the piston two 42 and the piston one 33, which drives the piston one 33 to move back and forth on the water storage cylinder 31 to realize the sampling of the water quality by the water storage cylinder 31.

[0045] The sealing plate 43 is rotationally arranged in the pressure cavity 214, and the sealing plate 43 is provided with a notch 431, the size of the notch 431 just meets the requirement of exposing a group of the pistons 33, when the group of the pistons 33 communicates with the piston 42 through the notch 431, the rest of the pistons 33 are blocked by the sealing plate 43, the piston 42 is only used to drive a group of the sampling units 3 to sample when the piston 42 moves, the independent sampling of each group of the sampling units 3 is realized, and the water quality of each group of sampling is ensured not to be polluted.

[0046] The rotating assembly 44 comprises a connecting rod 441 arranged on the sealing plate 43 and coinciding with the central axis of the sealing plate 43, a fixed shaft 442 fixedly connected to the connecting rod 441 and used to drive the sealing plate 43 to rotate through the connecting rod 441, and a movable sleeve 443 arranged on the fixed shaft 442 and used to rotate by cooperating with the back-and-forth movement of the piston 42, the rotation of the movable sleeve 443 is used to control the rotation of the fixed shaft 442, so that the rotation of the sealing plate 43 is controlled.

[0047] The movable sleeve 443 is provided with an external thread 4431, the piston 42 is provided with a connecting sleeve 421, the connecting sleeve 421 is provided with an internal thread 422 matched with the external thread 4431, and the piston 42 is moved back and forth, the movable sleeve 443 is driven to rotate through the cooperation of the external thread 4431 and the internal thread 422.

[0048] The inner wall of the movable sleeve 443 is rotationally provided with an abutting block 4432, which is used to rotate and adjust the fixed shaft 442 in cooperation with the rotation of the movable sleeve 443, and the inner wall of the movable sleeve 443 is provided with a receiving groove 4433 matched with the abutting block 4432, which is used to receive the abutting block 4432.

[0049] The fixed shaft 442 is provided with an extrusion groove 4421 matched with the abutting block 4432, which is used to control the rotation of the fixed shaft 442 in cooperation with the abutting block 4432 when the movable sleeve 443 rotates.

[0050] When the linear motor 41 pushes the piston two 42 to move towards the sealing plate 43, the device enters the switching state, in which the gap 431 is away from the last group of water storage cylinders 31 and is aligned with the piston one 33 of the next group of water storage cylinders 31. At this time, the connecting sleeve 421 drives the movable sleeve 443 to rotate counterclockwise by pushing the external thread 4431 through the internal thread 422. At this time, the extrusion groove 4421 is connected with the storage groove 4433 through the abutment of the abutment block 4432. At this time, the movable sleeve 443 drives the fixed shaft 442 to rotate counterclockwise synchronously through the abutment block 4432. When the internal thread 422 is away from the external thread 4431, the gap 431 is just rotated to the vicinity of the piston one 33, so that the exposed piston one 33 is connected with the piston two 42. The movement of the piston two 42 reduces the volume of the pressure chamber 214, increases the air pressure, and drives the piston one 33 to move towards the connecting head 321, so as to discharge the air in the water storage cylinder 31 and prepare for water quality sampling.

[0051] When the linear motor 41 pulls the piston two 42 away from the sealing plate 43, the device enters the sampling state, in which a negative pressure area is generated in the water storage cylinder 31, so that water quality sampling work is performed through the water inlet pipe 322. At this time, the piston two 42 moves back, the internal thread 422 is connected with the external thread 4431 again, and the movable sleeve 443 rotates clockwise. At this time, the abutment block 4432 is extruded into the storage groove 4433 by the extrusion groove 4421 in cooperation with the rotation of the movable sleeve 443. At this time, the fixed shaft 442 does not rotate, and the sealing plate 43 does not rotate under the action of the fixed shaft 442. At this time, the space in the pressure chamber 214 increases to generate a negative pressure area, which drives the piston one 33 to move back. At this time, the space between the piston one 33 and the connecting head 321 increases, usually forming a negative pressure area. At this time, the water in the sampling area is attracted to enter the water storage cylinder 31 through the water inlet pipe 322, so that the pressure on both sides of the piston one 33 is balanced. At this time, the sampling work of the sampling area is completed.

[0052] The remaining structures are the same as those of example 2.

[0053] In summary, when the device moves to the sampling area, the linear motor 41 drives the piston 42 to move towards the piston 33, the connecting sleeve 421 drives the movable sleeve 443 to rotate counterclockwise by the pushing of the internal thread 422 to the external thread 4431, the extrusion groove 4421 is connected to the storage groove 4433 by the abutment of the abutment block 4432, the movable sleeve 443 drives the fixed shaft 442 to rotate counterclockwise by the abutment block 4432, the fixed shaft 442 drives the sealing plate 43 to rotate counterclockwise by the connecting rod 441, when the internal thread 422 is away from the external thread 4431, the gap 431 is just rotated to the vicinity of the piston 33, the exposed piston 33 is connected to the piston 42, the piston 42 continues to move on the connecting rod 441, the volume of the pressure chamber 214 is reduced, the air pressure is increased, the high pressure drives the piston 33 to move to the connecting head 321, the air in the water storage cylinder 31 is discharged, and the water sampling is prepared;

[0054] At this time, the linear motor 41 drives the piston 42 to move back, the space in the pressure chamber 214 is increased, a negative pressure area is generated, the negative pressure drives the piston 33 to move back, the space between the piston 33 and the connecting head 321 is increased, a negative pressure area is usually formed, the water in the sampling area is attracted, enters the water storage cylinder 31 through the water inlet pipe 322, and the pressure balance on both sides of the piston 33 is maintained, and at this time, the sampling work of the sampling area is completed.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A water quality sampling device for hydraulic engineering monitoring, characterized by: The device comprises a moving unit (1), an anti-blocking unit (2) arranged on the moving unit (1), a sampling unit (3) arranged on the anti-blocking unit (2), and a sampling control unit (4) arranged on the sampling unit (3); The sampling unit (3) comprises a water storage cylinder (31) arranged on the anti-blocking unit (2), a water inlet assembly (32) arranged on the water storage cylinder (31), a piston one (33) arranged on the water storage cylinder (31), and a clamping block (34) arranged on the water storage cylinder (31); The sampling control unit (4) comprises a linear motor (41) arranged on the moving unit (1), a piston two (42) arranged on the linear motor (41), a sealing plate (43) arranged on the moving unit (1) and matched with the clamping block (34), and a rotating assembly (44) arranged on the sealing plate (43) and matched with the piston two (42), and the sealing plate (43) is provided with a gap (431); The rotating assembly (44) comprises a connecting rod (441) arranged on the sealing plate (43) and coinciding with the central axis of the sealing plate (43), a fixed shaft (442) fixedly connected to the connecting rod (441), and a movable sleeve (443) arranged on the fixed shaft (442); The movable sleeve (443) is provided with external threads (4431), and the piston two (42) is provided with a connecting sleeve (421) provided with internal threads (422) matched with the external threads (4431); The movable sleeve (443) is provided with abutting blocks (4432) arranged on the inner wall in a rotating manner, and the inner wall of the movable sleeve (443) is provided with receiving grooves (4433) matched with the abutting blocks (4432); The fixed shaft (442) is provided with extrusion grooves (4421) matched with the abutting blocks (4432); When the linear motor (41) pushes the piston two (42) to move towards the sealing plate (43), the device enters a switching state, in which the gap (431) is separated from the last group of water storage cylinders (31) and aligned with the piston one (33) of the next group of water storage cylinders (31); When the linear motor (41) pulls the piston two (42) away from the sealing plate (43), the device enters a sampling state, in which a negative pressure area is generated in the water storage cylinder (31), so that water sampling operation is performed through the water inlet pipe (322) of the water inlet assembly (32).

2. The water quality sampling device for waterworks monitoring according to claim 1, characterized by: The anti-blocking unit (2) comprises a connecting cylinder (21) arranged on the moving unit (1), an interception net (22) arranged on the connecting cylinder (21), and a water power paddle (23) arranged on the interception net (22).

3. The water quality sampling device for hydroengineering monitoring according to claim 2, characterized in that: The sampling unit (3) is arranged on the connecting cylinder (21) around the central axis of the connecting cylinder (21); The connecting cylinder (21) is provided with mounting grooves (211) matched with the water storage cylinders (31), connecting grooves (212) matched with the clamping blocks (34), and fixing grooves (213).

4. The water quality sampling device for hydraulic engineering monitoring according to claim 3, characterized in that: The water inlet assembly (32) comprises a connecting head (321) arranged on the water storage cylinder (31), a water inlet pipe (322) arranged on the connecting head (321), a protrusion (323) arranged on the connecting head (321), and a blocking block (324) arranged on the connecting head (321); The water storage cylinder (31) is communicated with the intercepting net (22) through the water inlet pipe (322).

5. The water quality sampling device for hydroengineering monitoring according to claim 4, characterized in that: The second piston (42) is slidingly arranged on the connecting cylinder (21), and the connecting cylinder (21) is provided with a pressure cavity (214) matched with the second piston (42).

6. The water quality sampling device for hydroengineering monitoring according to claim 5, characterized in that: The sealing plate (43) is rotationally arranged in the pressure cavity (214).

Images