A water quality sampling device for water conservancy projects

Abstract

The utility model discloses a water quality sampling device for water conservancy projects, specifically relating to the technical field of water conservancy projects, including a sampling barrel and a floating plate, the lower end of the sampling barrel is fixedly connected with a counterweight assembly, the inner cavity of the sampling barrel and the upper part of the sampling barrel are jointly provided with a cover assembly, the upper part of the cover assembly is fixedly connected with a sphere, the upper side of the outer surface of the sampling barrel is fixedly connected with a limit ring, and the upper end of the limit ring is provided with a limit assembly. The water quality sampling device for water conservancy projects described in the utility model is provided with a winch, a sampling barrel, a lifting assembly and other structures, and can simultaneously perform water quality sampling at different depths. When sampling water bodies, the sampling depth is controlled by the winch to complete the sampling of water bodies at different depths. The water flow resistance and the provision of a counterweight assembly and a lifting assembly are utilized to realize automatic sampling of water bodies, and the operation is flexible and the sampling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy projects, in particular to a water quality sampling device for water conservancy projects. Background Art

[0002] Water conservancy projects are projects built to control and allocate natural surface water and groundwater to achieve the purpose of eliminating harm and promoting benefits. By building water conservancy projects, water flow control is achieved, flood disasters are prevented, and water volume is regulated and distributed to meet people's needs for water resources in life and production. In the process of building water conservancy projects, it is usually necessary to take water quality samples and analyze and measure the water body.

[0003] During the specific sampling process, since the water surface near the shore is shallow and the sampling depth is limited, it is necessary to go to the center of the river and other locations for sampling.

[0004] Chinese patent document CN216847011 U discloses a water quality sampling device for water conservancy projects, including a base, a No. 1 electric push rod is fixedly installed in the middle of the upper end of the base, the output end of the No. 1 electric push rod is fixedly connected to a mounting plate, the four corners of the upper end of the base are fixedly connected to support rods, the front and rear ends of the mounting plate are fixedly connected to lifting components, the lower ends of the two lifting components are respectively fixedly connected to the upper ends of the corresponding support rods, the upper ends of the two lifting components are fixedly connected to limit plates, the middle of the upper end of the mounting plate is fixedly connected to a mounting seat, the middle of the left end of the mounting seat is fixedly installed with a control device, and the sampling component is movably installed in the control device. The water quality sampling device for water conservancy projects described in the above patent document can prevent floating objects from entering the sampling bottle by embedding a leakage net between the bottle cap and the sampling bottle, while water will penetrate into the sampling bottle through the mesh of the leakage net, thereby improving the quality of the water obtained.

[0005] The device in the above-mentioned document is in the process of implementation;

[0006] 1. Although the sampling assembly can enter water bodies of different depths for sampling, the sampling assembly cannot be sealed after completing the collection of the water body. When the sampling barrel moves in the water, the samples in the barrel and the samples outside the barrel will be exchanged, resulting in the collected water samples not completely belonging to the water samples of the predetermined depth.

[0007] 2. It is not possible to take samples of water bodies at different depths, so the water quality test results are not representative, which affects the accuracy of water quality testing. Utility Model Content

[0008] The main purpose of the utility model is to provide a water quality sampling device for water conservancy projects, which can effectively solve the problem of being unable to collect water samples at different depths.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0010] A water quality sampling device for water conservancy projects, comprising a sampling barrel and a floating plate, wherein a sampling groove identical to that at the lower end of the floating plate is provided in the middle of the upper end of the floating plate;

[0011] The lower end of the sampling barrel is fixedly connected to a counterweight assembly, the inner cavity of the sampling barrel and the upper part of the sampling barrel are jointly provided with a cover assembly, the upper part of the cover assembly is fixedly connected to a sphere, the upper side of the outer surface of the sampling barrel is fixedly connected to a limit ring, and the upper end of the limit ring is provided with a limit assembly;

[0012] The upper end of the floating plate is fixedly connected to a bracket, the upper end of the upper horizontal part of the bracket is fixedly connected to a winch, a rope is wound around the drum of the winch, the end of the rope away from the winch is fixedly connected to a handle, the lower end of the vertical part of the handle is fixedly connected to a lifting assembly, and the limit assembly is slidably connected to the lifting assembly;

[0013] The cover plate assembly comprises an upper cover plate arranged at the upper end of the sampling barrel, and a spring is fixedly connected to the middle part of the upper end of the upper cover plate and the middle part of the lower end of the limiting plate;

[0014] The limiting assembly includes a plurality of connecting rods 2 arranged at the upper end of the limiting ring and distributed in a ring array, the upper ends of the plurality of connecting rods 2 are commonly fixedly connected to the limiting plate, and the lower ends of the plurality of connecting rods 2 are commonly fixedly connected to the limiting ring.

[0015] Preferably, a lower water inlet communicating with the inner cavity of the sampling barrel is provided at the bottom of the sampling barrel, and an upper water inlet is provided at the upper end of the sampling barrel.

[0016] Preferably, the counterweight assembly comprises a counterweight block fixedly connected to the bottom of the sampling barrel, a resistance ring is fixedly connected to the outer surface of the counterweight block, and the counterweight block is in communication with the inner cavity of the sampling barrel.

[0017] Preferably, the cover plate assembly also includes a connecting rod 1, which sequentially passes through the middle part of the upper cover plate end and the middle part of the lower end of the limit plate, extends to the upper part and is fixedly connected to the support plate, the connecting rod 1 is fixedly connected to the upper cover plate, a lower end of the connecting rod is fixedly connected to the lower cover plate, and the sphere is fixedly connected to the middle part of the upper end of the support plate.

[0018] Preferably, the lifting assembly includes a ring body 2 fixedly connected to the lower end of the vertical part of the handle, and a plurality of sliding rods distributed in a circular array are fixedly connected to the outer side of the lower end of the ring body 2, and the lower ends of the plurality of sliding rods successively penetrate the upper end of the limit plate and the upper end of the limit ring, extend to the lower part and are commonly fixedly connected to the ring body 1, and the plurality of sliding rods are slidably connected to the limit plate and the limit ring, and the ring body 2 is provided with holes.

[0019] Preferably, the lower cover plate is located above the lower water inlet and the diameter of the lower cover plate is larger than the inner diameter of the lower water inlet, and the upper cover plate is located above the upper water inlet and the diameter of the upper cover plate is larger than the inner diameter of the upper water inlet.

[0020] Preferably, the sphere is a soft rubber ball, and the diameter of the sphere is larger than the inner diameter of the hole.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The utility model can simultaneously perform water quality sampling at different depths by arranging structures such as a winch, a sampling bucket, and a pulling assembly. When sampling water bodies, the sampling depth is controlled by the winch to complete the sampling of water bodies at different depths. The operation is flexible and the sampling efficiency is improved;

[0023] At the same time, the device can be moved to the center of the water surface to take samples, thereby increasing the sampling depth range and further improving the exploration of water quality.

[0024] 2. During the implementation of the utility model, the counterweight assembly is used to accelerate the descending speed of the sampling barrel, increase the water flow resistance, and use the water flow resistance to raise the cover assembly so that the water body at the sampling depth enters the sampling barrel; in the process of the sampling barrel rising, the cover assembly is also lowered by the water flow resistance to seal the sampling barrel, thereby completing automatic sampling of deep water bodies, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a partial structural schematic diagram of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the lifting component of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the cover plate assembly and the limit assembly of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the sampling barrel and counterweight assembly of the utility model;

[0030] Figure 6 It is a partial structural cross-sectional view of the utility model in the water inlet state;

[0031] Figure 7 It is a partial structural cross-sectional view of another state of the utility model.

[0032] In the figure: 1. sampling barrel; 101. lower water inlet; 102. upper water inlet; 2. counterweight assembly; 21. counterweight block; 22. resistance ring; 3. cover assembly; 31. lower cover; 32. upper cover; 33. support plate; 34. connecting rod one; 4. limit assembly; 41. limit plate; 42. connecting rod two; 5. lifting assembly; 51. ring body one; 52. sliding rod; 53. ring body two; 531. hole; 6. limit ring; 7. spring; 8. sphere; 9. handle; 10. rope; 11. bracket; 12. winch; 13. floating plate. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] like Figure 1 As shown, a water quality sampling device for water conservancy projects includes a sampling barrel 1 and a floating plate 13. A sampling groove identical to that at the lower end of the floating plate 13 is provided in the middle of the upper end of the floating plate 13. The groove of the floating plate 13 is convenient for the collection and release of the sampling device. At the same time, the buoyancy of the floating plate 13 can support the placement of the sampling device at its upper end and the sampling operation without sinking.

[0035] like Figure 5 As shown, the lower end of the sampling barrel 1 is fixedly connected to a counterweight assembly 2, and the counterweight assembly 2 includes a counterweight block 21 fixedly connected to the bottom of the sampling barrel 1, and a resistance ring 22 is fixedly connected to the outer surface of the counterweight block 21. The resistance ring 22 can maintain stability during the rise and fall of the sampling barrel 1, and at the same time can increase the resistance of the sampling device during the rise and reduce the rise speed. At the same time, the counterweight block 21 is communicated with the inner cavity of the sampling barrel 1, which is convenient for water to enter the sampling barrel 1;

[0036] like Figure 2 As shown, the inner cavity of the sampling barrel 1 and the upper part of the sampling barrel 1 are jointly provided with a cover assembly 3, a sphere 8 is fixedly connected to the upper part of the cover assembly 3, a limit ring 6 is fixedly connected to the upper side of the outer surface of the sampling barrel 1, a limit assembly 4 is provided at the upper end of the limit ring 6, and the limit assembly 4 includes a plurality of connecting rods 42 arranged at the upper end of the limit ring 6 and distributed in a ring array, the upper ends of the plurality of connecting rods 42 are jointly fixedly connected to the limit plate 41, and the lower ends of the plurality of connecting rods 42 are jointly fixedly connected to the limit ring 6;

[0037] The cover plate assembly 3 includes an upper cover plate 32 disposed at the upper end of the sampling barrel 1. The middle part of the upper end of the upper cover plate 32 and the middle part of the lower end of the limiting plate 41 are fixedly connected with a spring 7. The limiting assembly 4 can limit the rising height of the cover plate assembly 3 through the spring 7 to prevent the cover plate assembly 3 from being separated from the sampling barrel 1 when the device rises, and the water sample cannot be collected;

[0038] The upper end of the floating plate 13 is fixedly connected to a bracket 11, and the upper end of the upper horizontal part of the bracket 11 is fixedly connected to a winch 12. The bracket 11 and the winch 12 are both prior art. A rope 10 is wound around the drum of the winch 12, and a handle 9 is fixedly connected to the end of the rope 10 away from the winch 12. The lower end of the vertical part of the handle 9 is fixedly connected to a lifting assembly 5, and the limit assembly 4 is slidably connected to the lifting assembly 5;

[0039] The winch 12 mentioned above is a mechanical device used to lift and suspend heavy objects, and its main components include: a drive assembly, a drum, a capstan and a braking device, etc. The rope 10 in this solution is also a component of the winch 12.

[0040] like Figure 6 As shown, a lower water inlet 101 communicating with the inner cavity of the sampling barrel 1 is provided at the bottom of the sampling barrel 1, and an upper water inlet 102 is provided at the upper end of the sampling barrel 1. When the cover assembly 3 rises due to water flow resistance, water flows into the sampling barrel 1 through the upper water inlet 102 and the lower water inlet 101.

[0041] like Figure 4 As shown, the cover assembly 3 also includes a connecting rod 34, which sequentially passes through the middle part of the lower end of the upper cover plate 32 and the middle part of the lower end of the limit plate 41, extends to the upper part and is fixedly connected to the support plate 33, the connecting rod 34 is fixedly connected to the upper cover plate 32, the lower end of the connecting rod 34 is fixedly connected to the lower cover plate 31, and the ball 8 is fixedly connected to the middle part of the upper end of the support plate 33.

[0042] like Figure 3 As shown, the lifting assembly 5 includes a ring body 2 53 fixedly connected to the lower end of the vertical part of the handle 9, and a plurality of slide rods 52 distributed in a ring array are fixedly connected to the outer side of the lower end of the ring body 2 53. The lower ends of the plurality of slide rods 52 successively penetrate the upper end of the limiting plate 41 and the upper end of the limiting ring 6 and extend to the lower part and are commonly fixedly connected to the ring body 1 51. The plurality of slide rods 52 are slidably connected to the limiting plate 41 and the limiting ring 6. The ring body 2 53 is provided with a hole 531, and a sphere 8 fixedly connected to the support plate 33 is arranged in the hole 531. The sphere 8 is a soft rubber ball, and the diameter of the sphere 8 is larger than the inner diameter of the hole 531.

[0043] In the initial state, the sphere 8 is located at the upper part of the hole 531; when the sampling device is subjected to an instantaneous upward pulling force from the rope 10, due to the different rising speeds of the sphere 8 and the pulling assembly 5, the sphere 8 will be deformed and move downward out of the hole 531, the pulling assembly 5 and the sampling bucket 1 will continue to rise rapidly, and the cover assembly 3 will descend under the action of resistance and the elastic force of the spring 7 to seal the water inlet, thereby completing the sampling of the water body.

[0044] According to the characteristics of water, when water is subjected to a rapid or strong impact force, it will generate a huge pressure. This pressure mainly comes from the incompressibility of water and its inertia. In simple terms, when an external force acts quickly on water, the water molecules are difficult to be compressed or moved in a short time due to their own close arrangement and mutual forces, so a large reaction force will be generated. Therefore, in the process of quickly pulling up the lifting assembly 5 in this solution, under the action of the resistance ring 22, the cover assembly 3 will open.

[0045] When the sampling barrel 1 descends to the water body at a set depth, the air pressure inside the sampling barrel 1 is less than the water pressure outside. When the sampling device is subjected to an instantaneous upward pulling force, the lifting assembly 5 rises, driving the sphere 8 and the support plate 33 fixedly connected to the sphere 8 to rise, and the lower cover plate 31 and the upper cover plate 32 fixedly connected to the support plate 33 through the connecting rod 1 34 also rise. At this time, due to the pressure difference between the inside and the outside, the gas inside the sampling barrel 1 quickly escapes from the upper water inlet 102, and the external water quickly enters the sampling barrel 1 until the internal and external pressures are balanced; in the process of the sampling device rising, the lifting assembly 5 rises quickly, and the sampling barrel 1, the cover assembly 3 and the sphere 8 rise slowly due to the resistance of the resistance ring 22 in the water, the hole 531 squeezes the sphere 8 upward, the sphere 8 is deformed, and finally breaks away from the hole 531, and finally under the elastic force of the spring 7, the cover assembly 3 descends to reseal the sampling barrel 1.

[0046] like Figure 7 As shown, the lower cover plate 31 is located above the lower water inlet 101 and the diameter of the lower cover plate 31 is larger than the inner diameter of the lower water inlet 101 , and the upper cover plate 32 is located above the upper water inlet 102 and the diameter of the upper cover plate 32 is larger than the inner diameter of the upper water inlet 102 .

[0047] As mentioned above, after the water intake is completed, the sampling barrel 1 must be in a sealed state to achieve sampling of water at a set depth. When the diameter of the lower cover plate 31 is larger than the inner diameter of the lower water inlet 101 and the diameter of the upper cover plate 32 is larger than the inner diameter of the upper water inlet 102, the water sample in the sampling barrel 1 can be prevented from overflowing and the external water can be prevented from flowing in.

[0048] During the implementation process, the buoyancy generated by the air in the inner cavity of the sampling barrel 1 in the water is smaller than the gravity generated by the structures such as the counterweight block 21 and the resistance ring 22;

[0049] Likewise, the counterweight 21 is provided in the present solution to increase the stability of the sampling barrel 1 during the process of the sampling barrel 1 descending in the water.

[0050] It should be noted that the specific installation method of the winch 12 used in the present invention, the circuit connection method and the control method are all conventional designs, and the present invention will not elaborate on them in detail.

[0051] The working principle of the utility model is as follows: first, the hoist 12 is started to adjust the length of the rope 10, and the sampling device is dropped to the required sampling depth. After it is stable, the hoist 12 is started again to pull the sampling device up. When the sampling device is subjected to an instantaneous upward pulling force, the cover plate assembly 3 rises rapidly, and the sampling barrel 1 rises slowly under the action of the resistance ring 22. At this time, a gap is formed between the lower cover plate 31 and the lower water inlet 101, and between the upper cover plate 32 and the upper water inlet 102. Because the pressure inside the sampling barrel 1 is lower than that outside, the gas inside the sampling barrel 1 quickly escapes from the upper water inlet 102, and the external water quickly enters the sampling barrel 1; the lifting assembly 5 continues to rise rapidly, and the hole 531 squeezes the sphere 8 upward, the sphere 8 is deformed, and finally breaks away from the hole 531. Under the elastic force of the spring 7, the cover assembly 3 descends, the upper cover 32 presses the upper water inlet 102, and the lower cover 31 presses the lower water inlet 101, thereby sealing the sampling barrel 1.

[0052] After the sampling is completed, the sampling barrel 1 is taken out of the water and placed on the floating plate 13. The ring body 53 is pressed down appropriately to cause the sphere 8 to deform and enter the hole 531, and finally return to the top of the hole 531. During this process, the sphere 8 drives the support plate 33 fixedly connected thereto to move upward, and the lower cover plate 31 and the upper cover plate 32 also move upward. A gap appears between the lower cover plate 31 and the lower water inlet 101, and the collected water sample overflows from the lower water inlet 101.

[0053] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A water quality sampling device for water conservancy projects, comprising a sampling barrel (1) and a floating plate (13), characterized in that: A sampling groove identical to that at the lower end of the floating plate (13) is provided in the middle of the upper end of the floating plate (13); The lower end of the sampling barrel (1) is fixedly connected to a counterweight assembly (2); the inner cavity of the sampling barrel (1) and the upper part of the sampling barrel (1) are jointly provided with a cover assembly (3); the upper part of the cover assembly (3) is fixedly connected to a sphere (8); the upper side of the outer surface of the sampling barrel (1) is fixedly connected to a limit ring (6); the upper end of the limit ring (6) is provided with a limit assembly (4); The upper end of the floating plate (13) is fixedly connected to a bracket (11), the upper end of the upper horizontal part of the bracket (11) is fixedly connected to a winch (12), a rope (10) is wound around the drum of the winch (12), the end of the rope (10) away from the winch (12) is fixedly connected to a handle (9), the lower end of the vertical part of the handle (9) is fixedly connected to a lifting assembly (5), and the limiting assembly (4) is slidably connected to the lifting assembly (5); The limiting assembly (4) comprises a plurality of connecting rods (42) arranged at the upper end of the limiting ring (6) and distributed in a ring array, the upper ends of the plurality of connecting rods (42) being fixedly connected to the limiting plate (41), and the lower ends of the plurality of connecting rods (42) being fixedly connected to the limiting ring (6); The cover plate assembly (3) comprises an upper cover plate (32) arranged at the upper end of the sampling barrel (1), and a spring (7) is fixedly connected to the middle part of the upper end of the upper cover plate (32) and the middle part of the lower end of the limiting plate (41).

2. A water quality sampling device for water conservancy projects according to claim 1, characterized in that: The bottom of the sampling barrel (1) is provided with a lower water inlet (101) which is in communication with the inner cavity of the sampling barrel (1), and the upper end of the sampling barrel (1) is provided with an upper water inlet (102).

3. A water quality sampling device for water conservancy projects according to claim 1, characterized in that: The counterweight assembly (2) comprises a counterweight block (21) fixedly connected to the bottom of the sampling barrel (1); a resistance ring (22) is fixedly connected to the outer surface of the counterweight block (21); and the counterweight block (21) is in communication with the inner cavity of the sampling barrel (1).

4. A water quality sampling device for water conservancy projects according to claim 2, characterized in that: The cover plate assembly (3) further comprises a connecting rod (34), wherein the connecting rod (34) sequentially passes through the middle portion of the lower end of the upper cover plate (32) and the middle portion of the lower end of the limit plate (41), extends to the upper portion and is fixedly connected to the support plate (33), the connecting rod (34) is fixedly connected to the upper cover plate (32), the lower end of the connecting rod (34) is fixedly connected to the lower cover plate (31), and the ball (8) is fixedly connected to the middle portion of the upper end of the support plate (33).

5. A water quality sampling device for water conservancy projects according to claim 1, characterized in that: The lifting assembly (5) comprises a second ring body (53) fixedly connected to the lower end of the vertical part of the handle (9); a plurality of slide bars (52) distributed in a circular array are fixedly connected to the outer side of the lower end of the second ring body (53); the lower ends of the plurality of slide bars (52) successively penetrate the upper end of the limit plate (41) and the upper end of the limit ring (6) and extend to the lower part and are fixedly connected to the first ring body (51); the plurality of slide bars (52) are slidably connected to the limit plate (41) and the limit ring (6); and the second ring body (53) is provided with a hole (531).

6. A water quality sampling device for water conservancy projects according to claim 4, characterized in that: The lower cover plate (31) is located above the lower water inlet (101) and the diameter of the lower cover plate (31) is greater than the inner diameter of the lower water inlet (101); the upper cover plate (32) is located above the upper water inlet (102) and the diameter of the upper cover plate (32) is greater than the inner diameter of the upper water inlet (102).

7. A water quality sampling device for water conservancy projects according to claim 5, characterized in that: The sphere (8) is a soft rubber ball, and the diameter of the sphere (8) is greater than the inner diameter of the hole (531).

Images