Water sample collecting device for water conservancy project
By designing a floating disc with a floating ring and a rotatable rotor combined with a fixing mechanism, the problem that the existing water sample collection device cannot flexibly adjust the depth is solved, and water can be inlet and blocked at any depth, which facilitates the collection and detection of water samples.
Patent Information
- Application Number
- CN202422923555.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-11-27
AI Technical Summary
The existing water sample collection device is limited by the length of the connecting rod, and cannot flexibly adjust the collection depth, resulting in only water samples of fixed depth being collected.
A water sample collection device is designed, including a disc, a connecting rod, a collection barrel and a water inlet mechanism. It floats on the water surface through a floating ring, and uses a counterweight block and a blocking head to control the opening and closing of the water inlet. Combined with a rotatable rotor and a fixing mechanism, the length of the collection barrel is flexible to adjust and fix underwater.
It realizes that water can be inlet and blocked at any time at any depth, which facilitates the collection and detection of water samples and avoids the problem of fixed depth limitations.
Smart Images

Figure CN223229272U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water conservancy projects, in particular to a water sample collecting device used in water conservancy projects. Background Art
[0002] When carrying out water conservancy projects, it is necessary to collect water samples from the water area where they are located. It is an important part of water quality monitoring, environmental assessment and water resources management. By collecting water samples, the physical, chemical and biological indicators of the water body can be analyzed, the safety and suitability of the water quality can be evaluated, and pollutants in the water body and their concentration changes can be identified and monitored, which helps to evaluate the health of the water ecosystem.
[0003] Existing water sample collection devices, such as CN221038131U, can only sample water at a specified depth, effectively meeting the sampling requirements and ensuring the cleanliness of the water after sampling. However, such a collection method is limited by the length of the connecting rod, resulting in only being able to collect water at a fixed depth. It is inconvenient to use when the depth to be collected needs to change. Therefore, the present application provides a water sample collection device for water conservancy projects to meet the needs. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a water sample collection device for water conservancy projects to solve the problem that the existing collection method is limited by the length of the connecting rod, resulting in only being able to collect water at a fixed depth, which is inconvenient to use when the depth to be collected needs to be changed.
[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:
[0006] A water sample collection device for water conservancy projects comprises a disc and a connecting rod, the top of the connecting rod is fixedly connected to a top block, the disc and the connecting rod are in a sleeve relationship, the outer wall of the disc is fixedly connected to a float that allows the disc to float on the water, the top of the disc is fixedly connected to two brackets, a rotatable runner is installed between the brackets, a hose is accommodated on the runner, the end of the hose away from the runner passes through the disc and extends downward, the top of the disc is equipped with a fixing mechanism for fixing the connecting rod, the bottom of the connecting rod is fixedly connected to a collection bucket, the top of the collection bucket is provided with a water inlet, and the bottom of the collection bucket is provided with a water inlet. A counterweight block is fixedly connected thereto, and a water inlet mechanism for allowing water to enter the collection bucket is installed on the top of the collection bucket, and the water inlet mechanism includes a water inlet cylinder that is communicated with the water inlet and fixedly connected to the top of the collection bucket, and a chute that passes through the water inlet cylinder is provided on the water inlet cylinder, and a slider is slidably connected to the interior of the chute, and the slider passes through the chute and the top of one end of the slider extended is fixedly connected to one end of the hose, and a counterweight block is fixedly connected to the top of the slider inside the water inlet cylinder, and a plug is fixedly connected to the bottom of the slider inside the water inlet cylinder, and the plug can block the interior of the water inlet cylinder.
[0007] Preferably, the fixing mechanism includes a fixing block 1 and a fixing block 2 which are arranged on the top of the disc and on both sides of the connecting rod, the sides of the fixing block 1 and the fixing block 2 close to each other are adapted to the connecting rod, the fixing block 1 is fixedly connected to the top of the disc, the fixing block 2 is in contact with the top of the disc, and the sides of the fixing block 1 and the fixing block 2 away from the rotating wheel are fixedly connected to a fixing block 3, a rotatable screw is provided between the fixing blocks 3, one end of the screw is threadedly connected to the fixing block 3 on the fixing block 2 and is fixedly connected to the rotating disc after passing through.
[0008] Preferably, a limiting groove penetrating the fixing block 1 is provided on the fixing block 1, and a limiting block adapted to the limiting groove is fixedly connected to the outer wall of the connecting rod, and the limiting block penetrates the limiting groove and the disc.
[0009] Preferably, a handle is provided on the bracket on one side of the rotating wheel, and the handle passes through the bracket and is fixedly connected to the rotating wheel.
[0010] Preferably, a water outlet pipe communicating with the inside and outside of the collection bucket is fixedly connected to the outer wall of the collection bucket, and a screw plug is threadedly connected to one end of the water outlet pipe away from the collection bucket.
[0011] Preferably, a scale line is provided on the outer wall of the connecting rod to assist in checking the water depth.
[0012] Compared with the prior art, the present invention has at least the following beneficial effects:
[0013] In the above scheme, by setting up a water inlet mechanism, when collecting water samples, the disc is placed on the water surface, and the disc will float on the water surface through the float ring. At this time, the collection bucket is underwater, and the counterweight block 2 presses the slider so that the water inlet is blocked by the plug at the bottom of the slider in the water inlet cylinder, so that water does not enter the collection bucket. Then the connecting rod is moved downward and fixed at a suitable depth by the fixing mechanism. During the movement of the connecting rod, the collection bucket will move downward, driving the slider downward. When the slider moves downward, one end of the slider extending out of the slide groove will move downward with one end of the hose. The movement of the hose will drive the wheel on the top of the disc to rotate, so that the length of the hose underwater is consistent with the depth of the slider. After the connecting rod is fixed at a suitable depth, the wheel is rotated in the opposite direction of the original rotation direction through the handle. The underwater hose rolls up, driving the slider to slide upward inside the chute. After the slider moves upward, the plugging head will follow it to move upward. When the plugging head moves to the point where it no longer blocks the water inlet cylinder, water will flow into the water inlet inside the water inlet cylinder through the chute, thereby entering the interior of the collection bucket. When the collection is completed, the wheel is turned by the handle to allow the slider to be driven downward by the gravity of the counterweight block 2 again, so that the plugging head blocks the water inlet cylinder again, and no water enters the water inlet. The advantage of this is that the length of the connecting rod underwater allows the collection bucket to change with the depth when the collection depth changes, so that the water inlet can be filled with water and blocked at any time at any depth, and can be used as the collection depth changes. When the collection is completed, the collected water can be allowed to flow out of the outlet pipe by unscrewing the screw plug after leaving the water surface, which is convenient for detection and use.
[0014] By setting up a fixing mechanism, when it is necessary to adjust the collection depth, the staff can hold the connecting rod and move it underwater, and use the scale line to judge the depth of the collection bucket underwater. During movement, the limit block will slide inside the limit slot to prevent the connecting rod from driving the collection bucket to rotate. When it moves to the appropriate position, the turntable is turned to drive the screw to rotate, so that the fixed block three on the fixed block two moves toward the direction close to the connecting rod through the rotation of the screw, driving the fixed block two to move together and finally conflict with the connecting rod. The connecting rod is clamped with the fixed block one, so that the connecting rod can be fixed, so that the collection bucket is at the required depth underwater. The advantage of this is that it is not limited to the length of the connecting rod and can only collect water of a fixed depth, so that the length of the connecting rod underwater can be changed. The changed connecting rod can be fixed at any time, so that the depth to be collected can be adjusted at any time, so that the collection bucket can more conveniently collect water samples at the required depth. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.
[0016] Figure 1 A schematic diagram of the three-dimensional structure of a water sample collection device for water conservancy projects;
[0017] Figure 2 This is a schematic diagram of the three-dimensional structure after the disc and the fixing mechanism are assembled;
[0018] Figure 3 This is a schematic diagram of the partially cutaway three-dimensional structure of the collection bucket and water inlet mechanism after assembly.
[0019] [reference numerals]
[0020] 1. Disc; 2. Connecting rod; 3. Collection bucket; 4. Water inlet mechanism; 401. Water inlet cylinder; 402. Slide; 403. Slider; 404. Counterweight block 2; 405. Plug; 5. Fixing mechanism; 501. Fixing block 1; 502. Fixing block 2; 503. Fixing block 3; 504. Screw; 505. Turntable; 506. Limiting groove; 6. Top block; 7. Rotating wheel; 8. Hose; 9. Counterweight block 1; 10. Water inlet; 11. Water outlet; 12. Plug; 13. Float; 14. Handle; 15. Scale line; 16. Limiting block; 17. Bracket.
[0021] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION
[0022] The following describes in detail a water sampling device for water conservancy projects provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative methods for implementing the invention in accordance with known techniques. Furthermore, the accompanying drawings are provided solely for the purpose of describing the embodiments in greater detail and are not intended to limit the present invention.
[0023] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).
[0024] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.
[0025] It will be understood that the meanings of “on,” “over,” and “above” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes being “on” something with intervening features or layers, and “on” or “over” means not only “on” or “above” something, but also includes being “on” or “above” something with no intervening features or layers.
[0026] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.
[0027] like Figure 1-Figure 3As shown, an embodiment of the present invention provides a water sample collection device for water conservancy projects, including a disc 1 and a connecting rod 2, the top of the connecting rod 2 is fixedly connected to a top block 6, the disc 1 and the connecting rod 2 are in a sleeve relationship, the outer wall of the disc 1 is fixedly connected to a float 13 that allows the disc 1 to float on the water, the top of the disc 1 is fixedly connected to two brackets 17, a rotatable runner 7 is installed between the brackets 17, a hose 8 is accommodated on the runner 7, the end of the hose 8 away from the runner 7 passes through the disc 1 and extends downward, a fixing mechanism 5 for fixing the connecting rod 2 is installed on the top of the disc 1, the bottom of the connecting rod 2 is fixedly connected to a collection bucket 3, the top of the collection bucket 3 is provided with a water inlet 10, the bottom of the collection bucket 3 is fixedly connected to a counterweight block 9, and the top of the collection bucket 3 is installed with a water inlet mechanism 4 for allowing water to enter the interior of the collection bucket 3, the water inlet mechanism 4 includes a connection with the water inlet 10 is connected to and fixedly connected to the water inlet cylinder 401 at the top of the collection bucket 3. A slide groove 402 is provided on the water inlet cylinder 401, and a slider 403 is slidably connected inside the slide groove 402. The slider 403 passes through the slide groove 402 and the top of one end extended from the slider 403 is fixedly connected to one end of the hose 8. The inside of the water inlet cylinder 401 is fixedly connected to a counterweight block 2 404 at the top of the slider 403. The inside of the water inlet cylinder 401 is fixedly connected to a plug 405 at the bottom of the slider 403. The plug 405 can block the inside of the water inlet cylinder 401. A handle 14 is provided on the bracket 17 on one side of the rotating wheel 7. The handle 14 passes through the bracket 17 and is fixedly connected to the rotating wheel 7. A water outlet pipe 11 connecting the inside and outside of the collecting bucket 3 is fixedly connected to the outer wall of the collecting bucket 3. The end of the water outlet pipe 11 away from the collecting bucket 3 is threadedly connected to a screw plug 12.
[0028] When the water inlet mechanism 4 is set, the disc 1 is placed on the water surface, and the disc 1 will float on the water surface through the floating ring 13. At this time, the collecting bucket 3 is underwater. Since the counterweight block 404 presses the slider 403, the water inlet 10 is blocked by the plug 405 at the bottom of the slider 403 in the water inlet cylinder 401, so that the interior of the collecting bucket 3 will not be flooded with water. Then the connecting rod 2 is moved downward and then fixed at a suitable depth by the fixing mechanism 5. During the movement of the connecting rod 2, the collecting bucket 3 will move downward, driving the slider 403 to move downward. When the slider 403 moves downward, one end of the slider 403 extending out of the slide groove 402 moves downward with one end of the hose 8. The movement of the hose 8 will drive the rotary wheel 7 on the top of the disc 1 to rotate, so that the length of the hose 8 underwater is consistent with the depth of the slider 403. When the connecting rod 2 is fixed at a suitable depth, the rotary wheel 7 is rotated in the opposite direction of the original rotation direction through the handle 14 to When the water inlet 10 is no longer blocked by the water inlet pipe 401, water will flow into the water inlet pipe 10 inside the water inlet pipe 401 through the chute 402, thereby entering the interior of the collection bucket 3. When the collection is completed, the wheel 7 is rotated by the handle 14 to allow the slider 403 to move downward again by the gravity of the counterweight block 404, so that the plug 405 blocks the water inlet pipe 401 again, and no water will enter the water inlet 10. The advantage of this is that the length of the connecting rod 2 under water allows the collection bucket 3 to adapt to the change in depth when the collection depth changes, so that the water inlet 10 can be filled with water and blocked at any time at any depth, and can be used as the collection depth changes. When the collection is completed, the collected water can be discharged from the water outlet pipe 11 by unscrewing the screw plug 12 after leaving the water surface, which is convenient for detection.
[0029] like Figure 1 and Figure 2As shown, the fixing mechanism 5 includes a fixing block 1 501 and a fixing block 2 502 arranged on the top of the disc 1 on both sides of the connecting rod 2. The side of the fixing block 1 501 and the fixing block 2 502 close to each other is adapted to the connecting rod 2. The fixing block 1 501 is fixedly connected to the top of the disc 1, and the fixing block 2 502 is in conflict with the top of the disc 1. The sides of the fixing block 1 501 and the fixing block 2 502 away from the rotating wheel 7 are fixedly connected to the fixing block 3 503. A rotatable screw 504 is provided, one end of which is threadedly connected to the fixed block three 503 on the fixed block two 502 and is fixedly connected to the turntable 505 after passing through. A limiting groove 506 is provided on the fixed block one 501 and passes through the fixed block one 501. The outer wall of the connecting rod 2 is fixedly connected to a limiting block 16 adapted to the limiting groove 506. The limiting block 16 passes through the limiting groove 506 and the disc 1. A scale line 15 for assisting in checking the water depth is provided on the outer wall of the connecting rod 2.
[0030] When the collecting bucket 3 is at the desired depth, the staff can hold the connecting rod 2 and move it underwater, and judge the depth of the collecting bucket 3 under water with the help of the scale line 15. When moving, the limit block 16 will slide inside the limit groove 506 to prevent the connecting rod 2 from driving the collecting bucket 3 to rotate. When it moves to the appropriate position, the turntable 505 is rotated to drive the screw 504 to rotate, so that the fixing block 3 503 on the fixing block 2 502 moves toward the direction close to the connecting rod 2 through the rotation of the screw 504, driving the fixing block 2 502 to move together and finally contact the connecting rod 2, and cooperate with the fixing block 1 501 to clamp the connecting rod 2, so that the connecting rod 2 can be fixed, so that the collecting bucket 3 is at the desired depth underwater. The advantage of this is that it is not limited to the length of the connecting rod 2 and can only collect water of a fixed depth. The length of the connecting rod 2 under water can be changed. The changed connecting rod 2 can be fixed at any time, so as to adjust the depth to be collected at any time, so that the collecting bucket 3 can more conveniently collect water samples at the desired depth.
[0031] The technical solution provided by the present invention is to set a water inlet mechanism 4. When collecting water samples, the disc 1 is placed on the water surface. The disc 1 will float on the water surface through the float ring 13. At this time, the collection bucket 3 is underwater. Since the counterweight block 404 presses the slider 403, the water inlet 10 is blocked by the plug head 405 at the bottom of the slider 403 in the water inlet cylinder 401, so that water will not enter the interior of the collection bucket 3. Then the connecting rod 2 is moved downward and then fixed at a suitable depth position by the fixing mechanism 5. During the movement of the connecting rod 2, the collection bucket 3 will move downward, driving the slider 403 to move downward. When the slider 403 moves downward, one end of the slider 403 extending out of the slide groove 402 moves downward with one end of the hose 8. The movement of the hose 8 will drive the wheel 7 on the top of the disc 1 to rotate, so that the length of the hose 8 underwater is consistent with the depth of the slider 403. When the connecting rod 2 is fixed at a suitable depth, the wheel 7 is rotated in the opposite direction of the original rotation direction through the handle 14. When the water inlet 10 is no longer blocked by the water inlet pipe 401, water will flow into the water inlet pipe 10 inside the water inlet pipe 401 through the chute 402, thereby entering the interior of the collection bucket 3. When the collection is completed, the wheel 7 is rotated by the handle 14 to allow the slider 403 to move downward again by the gravity of the counterweight block 404, so that the plug 405 blocks the water inlet pipe 401 again, and no water will enter the water inlet 10. The advantage of this is that the length of the connecting rod 2 underwater allows the collection bucket 3 to adapt to the change in depth when the collection depth of the collection bucket 3 changes, so that the water inlet 10 can be filled with water and blocked at any time when it is at any depth, and can be used as the collection depth changes. When the collection is completed, the collected water can be discharged from the water outlet pipe 11 by unscrewing the screw plug 12 after leaving the water surface, which is convenient for detection.
[0032] When the collecting bucket 3 is at the desired depth, the staff can hold the connecting rod 2 and move it underwater, and judge the depth of the collecting bucket 3 under water with the help of the scale line 15. When moving, the limit block 16 will slide inside the limit groove 506 to prevent the connecting rod 2 from driving the collecting bucket 3 to rotate. When it moves to the appropriate position, the turntable 505 is rotated to drive the screw 504 to rotate, so that the fixing block 3 503 on the fixing block 2 502 moves toward the direction close to the connecting rod 2 through the rotation of the screw 504, driving the fixing block 2 502 to move together and finally contact the connecting rod 2, and cooperate with the fixing block 1 501 to clamp the connecting rod 2, so that the connecting rod 2 can be fixed, so that the collecting bucket 3 is at the desired depth underwater. The advantage of this is that it is not limited to the length of the connecting rod 2 and can only collect water of a fixed depth. The length of the connecting rod 2 under water can be changed. The changed connecting rod 2 can be fixed at any time, so as to adjust the depth to be collected at any time, so that the collecting bucket 3 can more conveniently collect water samples at the desired depth.
[0033] This invention encompasses any alternatives, modifications, equivalents, and solutions that do not depart from the spirit and scope of this invention. While specific details are described in detail in the preferred embodiments of this invention to provide a thorough understanding, those skilled in the art will be able to fully understand this invention without these details. Furthermore, to avoid unnecessary confusion regarding the essence of this invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.
[0034] Those skilled in the art will understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.
[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. A water sample collection device for water conservancy projects, characterized in that: include: The disc (1) and the connecting rod (2) are fixedly connected to a top block (6), the disc (1) and the connecting rod (2) are in a sleeve relationship, the outer wall of the disc (1) is fixedly connected to a float (13) that allows the disc (1) to float on water, the top of the disc (1) is fixedly connected to two brackets (17), a rotatable wheel (7) is installed between the brackets (17), a hose (8) is stored on the wheel (7), and the hose (8) is away from the One end of the rotating wheel (7) passes through the disc (1) and extends downward. A fixing mechanism (5) for fixing the connecting rod (2) is installed on the top of the disc (1). The bottom of the connecting rod (2) is fixedly connected to a collecting bucket (3). A water inlet (10) is provided on the top of the collecting bucket (3). A counterweight block (9) is fixedly connected to the bottom of the collecting bucket (3). A water inlet mechanism (4) for allowing water to enter the interior of the collecting bucket (3) is installed on the top of the collecting bucket (3). The water inlet mechanism (4) comprises a water inlet cylinder (401) which is in communication with the water inlet (10) and fixedly connected to the top of the collection bucket (3); a chute (402) which passes through the water inlet cylinder (401) is provided on the water inlet cylinder (401); a slider (403) is slidably connected inside the chute (402); the slider (403) passes through the chute (402) and the top of one end of the slider (403) is fixedly connected to one end of the hose (8); a counterweight block 2 (404) is fixedly connected to the top of the slider (403) inside the water inlet cylinder (401); a plug (405) is fixedly connected to the bottom of the slider (403) inside the water inlet cylinder (401); and the plug (405) can block the inside of the water inlet cylinder (401).
2. The water sample collection device for water conservancy projects according to claim 1, characterized in that: The fixing mechanism (5) includes a fixing block 1 (501) and a fixing block 2 (502) which are arranged on the top of the disc (1) and on both sides of the connecting rod (2); the sides of the fixing block 1 (501) and the fixing block 2 (502) close to each other are adapted to the connecting rod (2); the fixing block 1 (501) is fixedly connected to the top of the disc (1); the fixing block 2 (502) contacts the top of the disc (1); the sides of the fixing block 1 (501) and the fixing block 2 (502) away from the rotating wheel (7) are fixedly connected to a fixing block 3 (503); a rotatable screw rod (504) is arranged between the fixing blocks 3 (503); one end of the screw rod (504) is threadedly connected to the fixing block 3 (503) on the fixing block 2 (502) and is fixedly connected to the rotating disc (505) after passing through.
3. The water sample collection device for water conservancy projects according to claim 2, characterized in that: The fixing block (501) is provided with a limiting groove (506) that passes through the fixing block (501), and the outer wall of the connecting rod (2) is fixedly connected with a limiting block (16) that is adapted to the limiting groove (506), and the limiting block (16) passes through the limiting groove (506) and the disc (1).
4. The water sample collection device for water conservancy projects according to claim 1, characterized in that: A handle (14) is provided on the bracket (17) on one side of the rotating wheel (7), and the handle (14) passes through the bracket (17) and is fixedly connected to the rotating wheel (7).
5. The water sample collection device for water conservancy projects according to claim 1, characterized in that: A water outlet pipe (11) communicating with the inside and outside of the collection bucket (3) is fixedly connected to the outer wall of the collection bucket (3); a screw plug (12) is threadedly connected to one end of the water outlet pipe (11) away from the collection bucket (3).
6. The water sample collection device for water conservancy projects according to claim 1, characterized in that: The outer wall of the connecting rod (2) is provided with scale lines (15) for assisting in checking the water depth.
Citation Information
Patent Citations
A water sample collector for water conservancy project management
CN221038131U