Water conservancy water resource sampling device

Abstract

The utility model relates to water resource takes technical field, concretely relates to a water conservancy project water resource sampling device, include: bottom plate, drive component, drive component includes setting the telescopic box above the bottom plate, the inner wall rotation of telescopic box is installed has the bucket, the inner wall screw thread of bucket is installed has the threaded rod, the one end rotation of threaded rod is installed has the guide head, the guide head is rotationally installed has the rotation column. The utility model utilizes the dynamic balance mechanism of the buoyancy of float ring and the gravity of counterweight: when the sampling box sinks, the float ring stays in the water surface, when the connecting line reaches the target water layer with the sampling box, the buoyancy overcomes the spring elasticity through the connecting line of tension, accurately pulls the sealing sliding plate to move up along the slide rail and opens the water inlet, the spring forces the sealing sliding plate to close the water inlet when recycling, the whole process does not need manual intervention depth judgement or trigger operation, completely solves the sample confusion problem caused by the water depth measurement error or manual operation delay of traditional device.

Description

Technical Field

[0001] This utility model relates to the field of water resource sampling technology, specifically to a water resource sampling device for water conservancy projects. Background Technology

[0002] Water resource sampling devices are commonly used for environmental monitoring and water quality analysis. Such devices can be used to collect water samples for further chemical, physical, and biological analysis. There are many types of existing water resource sampling devices. For example, a water resource sampling device for water conservancy projects disclosed in patent publication number CN221631083U has a simple structure and can crush, filter, and collect impurities in the water, thereby avoiding the impact on subsequent testing and making it convenient for people to use.

[0003] However, insufficient precision in sampling depth control is a common problem during sampling. Operators often rely on rope markers or experience to judge water depth, which is easily affected by factors such as water transparency and flow velocity. This causes the actual sampling depth to deviate from the target water layer, affecting not only the representativeness of individual samples but also the possibility of samples from different depths being mixed up due to operational errors. This severely reduces the accuracy and comparability of the data, especially in stratified fine-grained studies, where even small deviations in depth control can lead to data distortion. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a water resource sampling device for water conservancy projects, which can effectively solve the problem of insufficient sampling depth control accuracy in the existing technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides a water resources sampling device for water conservancy projects, comprising:

[0007] Base plate;

[0008] A drive assembly includes a telescopic box disposed above a base plate. A sleeve is rotatably mounted on the inner wall of the telescopic box. A threaded rod is threadedly mounted on the inner wall of the sleeve. A guide head is rotatably mounted on one end of the threaded rod. A rotating column is rotatably mounted inside the guide head. A lifting rope is rotatably mounted on the outer wall of the rotating column.

[0009] The sampling assembly includes a sampling box fixed to the lower end of a suspension rope. A float ring is slidably fitted on the outer wall of the suspension rope above the sampling box. A sealing slide plate is airtightly slidably installed on one side of the float ring. A connecting line is provided between the sealing slide plate and the float ring.

[0010] Preferably, two brackets are symmetrically installed on the upper end of the base plate, and two support columns are fixedly installed between the brackets. The opposite ends of the two support columns are fixedly connected to the telescopic box. A first crank is rotatably installed on one end of the telescopic box. The output end of the first crank passes through the telescopic box and is fixedly connected to the sleeve. A limit frame is fixedly installed on the outer wall of the telescopic box at a position away from the brackets. A collar is rotatably installed on one side of the limit frame. The collar is slidably connected to the threaded rod for limiting.

[0011] Preferably, two fixing plates are fixedly installed on the upper end face of the bracket, and a protective box is fixedly installed on the opposite end of the fixing plates. A winding rod is rotatably installed inside the protective box. One end of the winding rod passes through the bracket and is fixedly installed with a second crank. The outer wall of the winding rod is wound and connected to the suspension rope.

[0012] Preferably, a counterweight is fixedly installed on the lower end face of the sampling box, and a slide rail is fixedly installed on one side of the sampling box, with the inner wall of the slide rail being airtightly slidably connected to the sealed sliding plate.

[0013] Preferably, a first linkage block is fixedly installed on one side of the sealing slide plate at a lower position, and an external block is fixedly installed on one side of the sampling box below the first linkage block. A spring is fixedly installed between the first linkage block and the external block.

[0014] Preferably, a second linkage block is fixedly installed on one side of the sealing slide plate and above the first linkage block. The upper end of the second linkage block is fixedly connected to the connecting line. Two mounting blocks are symmetrically installed on the lower end face of the float ring. A clamping block is fixedly installed on the opposite side of the mounting block. A screw is threaded onto one side of the mounting block.

[0015] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0016] 1. Utilizing the dynamic balance mechanism of buoyancy of the float and weight of the counterweight: When the sampling box sinks, the float stays on the water surface. When the connecting line reaches the target water layer with the sampling box, the buoyancy overcomes the spring force through the tensioned connecting line, precisely pulling the sealing slide plate up the slide rail to open the water inlet. When the spring is retracted, it forces the sealing slide plate to reset and close the water inlet. The whole process does not require manual intervention for depth judgment or triggering operation, completely solving the sample confusion problem caused by water depth measurement error or manual operation delay in traditional devices.

[0017] 2. The first crank drives the barrel to rotate, which in turn drives the threaded rod to move horizontally under the constraint of the collar of the limit frame. This allows the guide head to accurately adjust the horizontal position of the hoisting rope and the sampling box. This mechanical transmission structure completely avoids the positioning deviation caused by the impact of water flow in traditional manual throwing. It is especially suitable for fixed-point sampling in narrow rivers or turbulent waters. Combined with the rolling connection design between the rotating column inside the guide head and the hoisting rope, it effectively reduces frictional resistance and ensures a smooth and unobstructed displacement process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the drive component of this utility model;

[0021] Figure 3 This is a schematic diagram of the sampling component of this utility model.

[0022] Reference numerals: 1. Base plate; 2. Drive assembly; 201. Bracket; 202. Support column; 203. Telescopic box; 204. Threaded rod; 205. First crank handle; 206. Fixing plate; 207. Protective box; 208. Winding rod; 209. Second crank handle; 210. Lifting rope; 211. Limiting frame; 212. Guide head; 3. Sampling assembly; 301. Sampling box; 302. Counterweight; 303. Float ring; 304. Mounting block; 305. Screw; 306. Clamping block; 307. Slide rail; 308. Sealing slide plate; 309. First linkage block; 310. External block; 311. Spring; 312. Second linkage block; 313. Connecting wire. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Example: Refer to Figures 1 to 3 A water resources sampling device for a water conservancy project, comprising:

[0026] Base plate 1;

[0027] Drive assembly 2 includes a telescopic box 203 disposed above the base plate 1. A sleeve is rotatably installed on the inner wall of the telescopic box 203. A threaded rod 204 is threadedly installed on the inner wall of the sleeve. A guide head 212 is rotatably installed at one end of the threaded rod 204. A rotating column is rotatably installed inside the guide head 212. A lifting rope 210 is rotatably installed on the outer wall of the rotating column.

[0028] The sampling component 3 includes a sampling box 301 fixed to the lower end of the suspension rope 210. A float ring 303 is slidably fitted on the outer wall of the suspension rope 210 and above the sampling box 301. A sealing slide plate 308 is airtightly slidably installed on one side of the float ring 303. A connecting line 313 is provided between the sealing slide plate 308 and the float ring 303.

[0029] Reference Figure 2 Two brackets 201 are symmetrically installed on the upper end of the base plate 1. Two support columns 202 are fixedly installed between the brackets 201. The support columns 202 and the base plate 1 form a triangular structure to resist the impact of lateral water flow through rigid support. The opposite ends of the two support columns 202 are fixedly connected to the telescopic box 203. A first crank 205 is rotatably installed on one end of the telescopic box 203. The output end of the first crank 205 passes through the telescopic box 203 and is fixedly connected to the sleeve. A limit frame 211 is fixedly installed on the outer wall of the telescopic box 203 at a position away from the brackets 201. A collar is rotatably installed on one side of the limit frame 211. The collar is slidably connected to the threaded rod 204. The sliding fit between the collar and the threaded rod 204, plus the rotating column design inside the guide head 212, eliminates the torsional stress of the suspension rope 210 caused by the water flow vortex and avoids the horizontal drift of the sampling box 301.

[0030] Reference Figure 2 Two fixing plates 206 are fixedly installed on the upper end of the bracket 201. A protective box 207 is fixedly installed on the opposite end of the fixing plate 206. A winding rod 208 is rotatably installed inside the protective box 207. One end of the winding rod 208 passes through the bracket 201 and is fixedly installed with a second crank 209. The outer wall of the winding rod 208 is wound and connected to the suspension rope 210.

[0031] Reference Figure 3 A counterweight 302 is fixedly installed on the lower end face of the sampling box 301, and a slide rail 307 is fixedly installed on one side of the sampling box 301. The inner wall of the slide rail 307 is airtightly slidably connected to the sealing slide plate 308. The float ring 303 has a density less than water (ρ<1g / cm³). 3The mass of counterweight 302 satisfies m > F buoyancy + F spring 311 preload, ensuring that it is triggered only at the target depth (e.g., error < 0.5m when the water depth is 50m).

[0032] Reference Figure 3 A first linkage block 309 is fixedly installed on one side of the sealing slide plate 308 at a lower position. An external block 310 is fixedly installed on one side of the sampling box 301 and below the first linkage block 309. A spring 311 is fixedly installed between the first linkage block 309 and the external block 310. The stiffness coefficient of the spring 311 satisfies k < (ρwater·g·Vfloat 303-m counterweight) / Δx (Δx is the stroke of the slide rail 307), to avoid accidental triggering in shallow water or failure to open in deep water.

[0033] Reference Figure 3 A second linkage block 312 is fixedly installed on one side of the sealing slide plate 308 and above the first linkage block 309. The upper end of the second linkage block 312 is fixedly connected to the connecting line 313. Two mounting blocks 304 are symmetrically installed on the lower end face of the float ring 303. A clamping block 306 is fixedly installed on the opposite side of the mounting block 304. A serrated pattern (not shown in the figure) is added to the inner side of the clamping block 306. The clamping connection line 313 is engaged to prevent the water flow vibration from causing the screw 305 to loosen. A screw 305 is threaded on one side of the mounting block 304.

[0034] The working principle of this utility model is as follows:

[0035] By rotating the first crank 205, the sleeve is driven to rotate. The sleeve is threadedly connected to the threaded rod 204, which in turn causes the threaded rod 204 to extend and retract within the sleeve. During the extension and retraction of the threaded rod 204, it is slidably connected to the collar limiter, which can maintain the stability of the extension and retraction of the threaded rod 204. During the extension and retraction of the threaded rod 204, the guide head 212 is moved. The guide head 212 is slidably connected to the hoisting rope 210 through the rotating column. When moving, it can move the sampling box 301 to the water area where sampling is required. By rotating the second crank 209, the hoisting rope 210 wound on the outer wall of the winding rod 208 is extended. The weight of the counterweight 302 causes the sampling box 301 to descend into the water for sampling.

[0036] As the sampling box 301 descends to different water layers to collect samples, the float ring 303 floats on the water surface due to its own buoyancy. The continuously descending sampling box 301 stretches the connecting line 313. Upon reaching the designated water area, the connecting line 313 straightens. The weight of the counterweight 302 causes the sampling box 301 to descend further. The buoyancy of the float ring 303 causes the connecting line 313 to pull the sealing slide plate 308 within the slide rail 307, stretching the spring 311 and opening the water inlet. Water within the sampling area enters the sampling box 301 through the inlet to complete the sampling. It should be noted that when it is necessary to adjust the height of the sampling area, the connecting line 313 is loosened by rotating the screw 305 and extending the connecting line 313. This allows the distance between the sampling box 301 and the float ring 303 to be adjusted. When the sampling box 301 descends to different water layers, the connecting line 313 pulls the sealing slide plate 308 to allow the water sample to enter the sampling box 301.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water resources sampling device for a water conservancy project, characterized in that, include: Base plate (1); The drive assembly (2) includes a telescopic box (203) disposed above the base plate (1). A sleeve is rotatably installed on the inner wall of the telescopic box (203). A threaded rod (204) is threadedly installed on the inner wall of the sleeve. A guide head (212) is rotatably installed at one end of the threaded rod (204). A rotating column is rotatably installed inside the guide head (212). A lifting rope (210) is rotatably installed on the outer wall of the rotating column. The sampling assembly (3) includes a sampling box (301) fixed to the lower end of the suspension rope (210). A float (303) is slidably sleeved on the outer wall of the suspension rope (210) and above the sampling box (301). A sealing slide plate (308) is airtightly slidably installed on one side of the float (303). A connecting line (313) is provided between the sealing slide plate (308) and the float (303).

2. The water resources sampling device for water conservancy projects according to claim 1, characterized in that, Two brackets (201) are symmetrically installed on the upper end of the base plate (1). Two support columns (202) are fixedly installed between the brackets (201). The opposite ends of the two support columns (202) are fixedly connected to the telescopic box (203). A first crank (205) is rotatably installed on one end of the telescopic box (203). The output end of the first crank (205) passes through the telescopic box (203) and is fixedly connected to the sleeve. A limit frame (211) is fixedly installed on the outer wall of the telescopic box (203) at a position away from the brackets (201). A collar is rotatably installed on one side of the limit frame (211). The collar is slidably connected to the threaded rod (204).

3. A water resources sampling device for water conservancy projects according to claim 2, characterized in that, Two fixing plates (206) are fixedly installed on the upper end face of the bracket (201). A protective box (207) is fixedly installed on the opposite end of the fixing plate (206). A winding rod (208) is rotatably installed inside the protective box (207). One end of the winding rod (208) passes through the bracket (201) and is fixedly installed with a second crank (209). The outer wall of the winding rod (208) is wound and connected to the suspension rope (210).

4. A water resource sampling device for water conservancy projects according to claim 3, characterized in that, A counterweight (302) is fixedly installed on the lower end face of the sampling box (301), and a slide rail (307) is fixedly installed on one side of the sampling box (301). The inner wall of the slide rail (307) is airtightly slidably connected to the sealing slide plate (308).

5. A water resources sampling device for water conservancy projects according to claim 4, characterized in that, A first linkage block (309) is fixedly installed on one side of the sealing slide plate (308) at a lower position. An external block (310) is fixedly installed on one side of the sampling box (301) and below the first linkage block (309). A spring (311) is fixedly installed between the first linkage block (309) and the external block (310).

6. A water resources sampling device for water conservancy projects according to claim 1, characterized in that, A second linkage block (312) is fixedly installed on one side of the sealing slide plate (308) and above the first linkage block (309). The upper end of the second linkage block (312) is fixedly connected to the connecting line (313). Two mounting blocks (304) are symmetrically installed on the lower end face of the float ring (303). A clamping block (306) is fixedly installed on the opposite side of the mounting block (304). A screw (305) is threaded on one side of the mounting block (304).

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