Multi-depth sampling detection device for water pollution detection

Abstract

The utility model provides a kind of multi-depth sampling detection equipment for water pollution detection belongs to the technical field of environmental monitoring and sensor, including bearing mechanism, including support pedestal, the support fixedly installed in the support pedestal top, the sampling detection component being arranged in the support outside, and the through-hole being opened in the support pedestal outside, the utility model is scraped by adopting arc guide rail drive's nylon doctor after each sampling Automatic comprehensive scraping is carried out to filter probe, thoroughly removes microbial membrane and particulate matter attachment, elastic telescopic cylinder ensures that doctor is always with constant pressure adheres filter screen surface, maintains stable flow area, the positioning design of support ring sleeve guarantees that probe is not affected by lateral force when cleaning operation, can make filter screen surface pollutant removal rate effectively improve, continuously maintain design flow rate Significantly improve the accuracy of total phosphorus, ammonia nitrogen and other pollutant quantitative detection, avoid the systematic deviation problem of concentration determination caused by filter screen blockage.

Description

Technical Field

[0001] This utility model belongs to the technical field of environmental monitoring and sensors, specifically relating to a multi-depth sampling and detection device for water pollution detection. Background Technology

[0002] With the acceleration of industrialization, agriculture, and urbanization, the distribution of pollutants in water bodies has become more complex and stratified (e.g., the concentrations of heavy metals and organic pollutants vary significantly at different water depths). Traditional single-point sampling methods are insufficient to fully reflect the true state of water quality. This device integrates a multi-channel sampling system, depth sensors, and intelligent control modules to achieve synchronous or automatic sequential sampling at multiple preset depths on the same vertical profile. It provides key technical support for pollution source tracing, ecological risk assessment, and dynamic monitoring of treatment effects, and is particularly suitable for water environments with significant vertical differentiation characteristics, such as lakes, reservoirs, and nearshore areas.

[0003] The document CN220437854U discloses a sampler for water pollution treatment, including a housing, a sampling cylinder inserted into the housing, a sampling groove inside the sampling cylinder, a sampling port inside the sampling cylinder, the sampling port communicating with the inside of the sampling groove, a sealing groove inside the sampling port, a partition slidably connected inside the sealing groove, an automatic control component for controlling the opening and closing of the partition, a motor fixedly connected inside the housing, a rope winding roller fixedly connected to the drive end of the motor, and a traction rope wound inside the rope winding roller.

[0004] However, in practical applications, although the comparison document allows the sampling tube to be lowered to a suitable position inside the wastewater body according to the required sampling depth, and then the automatic control component controls the movement of the baffle to open the sampling port for sampling, so that the water pollution treatment sampler can sample the wastewater body at different depths multiple times, making the subsequent wastewater test results more universal and improving the sampling effect of the water pollution treatment sampler, when the equipment is working in waters rich in algae or suspended solids, although the anti-clogging filter screen at the sampling inlet is not completely sealed, the local flow rate will be reduced due to the adhesion of microbial film or particulate matter, resulting in the actual sampling volume being less than the preset value. In particular, it will produce systematic deviations in quantitative analysis (such as pollutant concentration calculation), causing on-site testing personnel to misjudge the true distribution of water quality parameters. Utility Model Content

[0005] The purpose of this invention is to provide a multi-depth sampling and detection device for water pollution detection, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A multi-depth sampling and detection device for water pollution detection, comprising, The support mechanism includes a support base, a bracket mounted on the support base, a sampling and detection component disposed on the bracket, and a through hole opened on the side of the support base; The cleaning mechanism includes a drive unit mounted on a support base, a positioning component connected to the output end of the drive unit, and a scraping component disposed on the positioning component; The scraping component is configured to move along an arc-shaped trajectory under the drive of the driving device to perform a close-fitting scraping cleaning of the filter surface of the sampling and detection component.

[0007] The driving device includes a second cylinder fixedly installed on the top of the support base and a push rod installed at the output end of the second cylinder, and the positioning component is fixedly connected to the end of the push rod.

[0008] The sampling and detection assembly includes a first cylinder fixedly installed on the top of the support base, a telescopic rope fixedly installed on the output end of the first cylinder, a top plate fixedly installed on the top of the bracket, and a guide wheel seat fixedly installed on the bottom of the top plate.

[0009] The sampling and detection assembly further includes a detector fixedly installed at the end of the telescopic rope, a sampling rod fixedly installed at the bottom of the detector, and a filter probe fixedly installed at the bottom of the sampling rod.

[0010] The telescopic rope is circumferentially wound around the annular groove of the wheel body of the guide wheel seat at a preset winding ratio, and the outer periphery of the wheel body is provided with anti-slip texture.

[0011] The positioning assembly includes a fixed base fixedly installed at the end of the push rod, a positioning disk fixedly installed in the inner cavity of the fixed base, and a fixed block fixedly installed on the outside of the positioning disk.

[0012] The scraping assembly includes a support ring fixedly installed on the outside of the fixed block, an arc-shaped guide rail fixedly installed at the bottom of the support ring, and a reciprocating drive block movably engaged at the bottom of the arc-shaped guide rail. The reciprocating drive block reciprocates along the arc-shaped trajectory of the arc-shaped guide rail.

[0013] The scraping assembly further includes an elastic telescopic cylinder fixedly installed at the bottom of the reciprocating drive block, and a nylon scraper fixedly installed at the telescopic end of the elastic telescopic cylinder. The support ring is movably sleeved on the outside of the filter probe to limit and stabilize it. The scraping surface of the nylon scraper is in close contact with the outer surface of the filter probe.

[0014] The elastic telescopic cylinder has a telescopic stroke of 5–10 mm and maintains a constant pressure of 0.3–0.8 N.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by using a nylon scraper driven by an arc-shaped guide rail to automatically scrape the filter probe thoroughly after each sampling, the microbial film and particulate matter are completely removed. The elastic telescopic cylinder ensures that the scraper always adheres to the filter screen surface with constant pressure, maintaining a stable flow area. The positioning design of the support ring ensures that the probe is not affected by lateral forces during the cleaning operation, which can effectively improve the removal rate of pollutants on the filter screen surface. Maintaining the designed flow rate significantly improves the accuracy of quantitative detection of pollutants such as total phosphorus and ammonia nitrogen, and avoids the systematic deviation problem of concentration measurement caused by filter screen clogging. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial side view of the load-bearing mechanism structure of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a partial side view of the positioning component structure of this utility model.

[0017] In the picture: 100. Bearing mechanism; 110. Support base; 120. Bracket; 130. Sampling and detection assembly; 131. First cylinder; 132. Telescopic rope; 133. Top plate; 134. Guide wheel seat; 135. Detector; 136. Sampling rod; 137. Filter probe; 140. Through hole; 200. Cleaning mechanism; 210. Second cylinder; 220. Push rod; 230. Positioning assembly; 231. Fixing base; 232. Positioning disc; 233. Fixing block; 240. Scraping assembly; 241. Support ring; 242. Arc-shaped guide rail; 243. Reciprocating drive block; 244. Elastic telescopic cylinder; 245. Nylon scraper. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example

[0019] Reference Figures 1-4This is an embodiment of the present invention, which provides a multi-depth sampling and detection device for water pollution detection, comprising: The support mechanism 100 includes a support base 110, a bracket 120 fixedly installed on the top of the support base 110, a sampling and detection component 130 disposed on the outside of the bracket 120, and a through hole 140 opened on the outside of the support base 110. The cleaning mechanism 200 includes a second cylinder 210 fixedly installed on the top of the support base 110, a push rod 220 installed at the output end of the second cylinder 210, a positioning component 230 disposed on the outside of the push rod 220, and a scraping component 240 disposed on the outside of the positioning component 230 for cleaning.

[0020] The supporting mechanism 100 and the cleaning mechanism 200 enable the equipment to simultaneously perform sampling and testing and automatic cleaning functions. The support base 110 provides a stable installation foundation, and the through hole 140 facilitates the flow of water after sampling and avoids sediment accumulation. The cleaning mechanism 200 uses a second cylinder 210 to drive the push rod 220, which, combined with the scraping component 240, achieves automated filter cleaning, improves the accuracy of test data, and reduces the frequency of manual maintenance.

[0021] Specifically, the sampling and detection assembly 130 includes a first cylinder 131 fixedly installed on the top of the support base 110, a telescopic rope 132 fixedly installed on the output end of the first cylinder 131, a top plate 133 fixedly installed on the top of the bracket 120, and a guide wheel seat 134 fixedly installed on the bottom of the top plate 133. The sampling and detection assembly 130 also includes a detector 135 fixedly installed on the end of the telescopic rope 132, a sampling rod 136 fixedly installed on the bottom of the detector 135, and a filter probe 137 fixedly installed on the bottom of the sampling rod 136. The telescopic rope 132 is circumferentially wound in the annular groove of the wheel body of the guide wheel seat 134 at a preset winding ratio, and the outer periphery of the wheel body is provided with anti-slip texture.

[0022] Understandably, the first cylinder 131 can also be other types of linear drive devices, such as hydraulic cylinders or linear motors, whose output end drives the scraping component 240 to move along the arc-shaped guide rail 242 via push rod 220 or directly connected to positioning component 230.

[0023] Furthermore, the telescopic rope 132 is circumferentially wound in the annular groove of the wheel body of the guide wheel seat 134 with a preset winding ratio of 1:5 to 1:10.

[0024] The sampling and detection component 130 uses a first cylinder 131 and a telescopic rope 132 to drive the detector 135 for multi-depth sampling. It has a compact structure and stable transmission. The guide wheel seat 134 ensures that the telescopic rope 132 can be smoothly extended and retracted, avoiding tangling or slippage, and improving the accuracy of sampling depth control. The detector 135 can directly measure water quality parameters, while the sampling rod 136 and the filter probe 137 can effectively intercept suspended solids, prevent large particulate impurities from interfering with the detection results, ensure accurate and reliable sampling data, and is suitable for water bodies with different turbidity levels. The belt drive structure of the telescopic rope 132 is optimized by adopting an anti-slip textured wheel and annular groove winding method, which enhances friction and prevents rope deviation, ensuring accurate depth control, reducing wear after long-term use, and improving equipment durability.

[0025] Furthermore, the positioning assembly 230 includes a fixed base 231 fixedly installed at the end of the push rod 220, a positioning disk 232 fixedly installed in the inner cavity of the fixed base 231, and a fixed block 233 fixedly installed on the outside of the positioning disk 232.

[0026] The cleaning mechanism 200 is precisely positioned by the fixed base 231 and the positioning plate 232, ensuring that the scraper is always aligned with the surface of the filter probe 137. The fixed block 233 provides rigid support to prevent displacement during the cleaning process and ensure consistent cleaning results.

[0027] Preferably, the scraping assembly 240 includes a support ring sleeve 241 fixedly installed on the outside of the fixed block 233, an arc-shaped guide rail 242 fixedly installed on the bottom of the support ring sleeve 241, and a reciprocating drive block 243 movably locked on the bottom of the arc-shaped guide rail 242. The reciprocating drive block 243 reciprocates along the arc-shaped trajectory of the arc-shaped guide rail 242. The scraping assembly 240 also includes an elastic telescopic cylinder 244 fixedly installed on the bottom of the reciprocating drive block 243, and a nylon scraper 245 fixedly installed on the telescopic end of the elastic telescopic cylinder 244. The support ring sleeve 241 is movably sleeved on the outside of the filter probe 137 to play a role in limiting and stabilizing. The scraping surface of the nylon scraper 245 is in close contact with the outer surface of the filter probe 137.

[0028] The core motion mechanism of the scraping component 240 uses an arc-shaped guide rail 242 and a reciprocating drive block 243 to make the scraper reciprocate along the outer wall of the filter probe 137 in an arc, effectively cleaning the attached contaminants. Compared with linear motion, this structure fits the curved surface of the filter probe 137 better, improving cleaning efficiency and reducing dead corner residue. The elastic telescopic cylinder 244 ensures that the nylon scraper 245 is always in close contact with the surface of the filter probe 137, adapting to possible slight deformation of the filter probe 137. The support ring 241 can stably position the entire cleaning mechanism 200, avoid vibration interference, significantly improve the reliability of long-term use, and reduce maintenance needs.

[0029] The telescopic cylinder 244 has a telescopic stroke of 5–10 mm and provides a constant pressure of 0.3–0.8 N, ensuring that the nylon scraper 245 fits tightly against the surface of the filter probe 137. Meanwhile, the nylon scraper 245 is made of modified nylon material with a Shore hardness of 80A–90A, and the curvature radius of the scraping surface matches the outer diameter of the filter probe 137 with a tolerance controlled within ±0.1 mm. The filter screen of the filter probe 137 is a sintered filter element of 316L stainless steel with an average pore size of 50 μm, which can withstand the impact of a flow rate of ≤3 m / s.

[0030] In use, firstly, the first cylinder 131 drives the detector 135, the sampling rod 136 at the bottom, and the filter probe 137 to different depths via the telescopic rope 132 to conduct water quality sampling and testing. After sampling is completed, the second cylinder 210 pushes the push rod 220 to move the positioning component 230 and the scraping component 240 to the position of the filter probe 137. The support ring 241 covers the filter probe 137 to achieve positioning. Then, the reciprocating drive block 243 moves along the arc-shaped guide rail 242, driving the elastic telescopic cylinder 244 and the nylon scraper 245 to perform a close-fitting reciprocating scraping cleaning on the outer surface of the filter probe 137 to remove the attached contaminants.

[0031] In summary, through the coordinated operation of the bearing mechanism 100 and the cleaning mechanism 200, efficient and accurate water quality testing and automatic maintenance functions are achieved. The sampling and testing component 130 uses the first cylinder 131 to drive the telescopic rope 132 to drive the detector 135 to perform multi-depth sampling, and the guide wheel seat 134 ensures that the rope transmission is stable and reliable. The cleaning mechanism 200 pushes the scraping component 240 through the second cylinder 210, and uses the arc-shaped guide rail 242 to guide the nylon scraper 245 to perform a close-fitting reciprocating cleaning along the surface of the filter probe 137. The elastic telescopic cylinder 244 ensures that the scraper is always in close contact, which effectively solves the problems of inaccurate sampling depth control, easy clogging of the filter screen, and difficult maintenance of traditional equipment. It not only improves the accuracy and stability of the detection data, but also significantly reduces the need for manual maintenance, and is suitable for working environments with long-term continuous monitoring.

[0032] In addition, this equipment is suitable for lakes, reservoirs and slow-flowing river sections with a water depth of 0.5–20m (flow velocity ≤1.5m / s). When the suspended solids concentration is >200mg / L, the cleaning mechanism 200 needs to be activated after each sampling.

[0033] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-depth sampling and detection device for water pollution detection, characterized in that: include, The support mechanism (100) includes a support base (110), a bracket (120) mounted on the support base (110), a sampling and detection component (130) disposed on the bracket (120), and a through hole (140) opened on the side of the support base (110). The cleaning mechanism (200) includes a drive unit mounted on a support base (110), a positioning component (230) connected to the output end of the drive unit, and a scraping component (240) disposed on the positioning component (230). The scraping component (240) is configured to move along an arc-shaped trajectory under the drive of the driving device to perform a scraping cleaning of the filter surface of the sampling and detection component (130).

2. The multi-depth sampling and detection device for water pollution detection according to claim 1, characterized in that: The drive device includes a second cylinder (210) fixedly installed on the top of the support base (110) and a push rod (220) installed on the output end of the second cylinder (210), and the positioning component (230) is fixedly connected to the end of the push rod (220).

3. The multi-depth sampling and detection device for water pollution detection according to claim 2, characterized in that: The sampling and detection assembly (130) includes a first cylinder (131) fixedly installed on the top of the support base (110), a telescopic rope (132) fixedly installed on the output end of the first cylinder (131), a top plate (133) fixedly installed on the top of the bracket (120), and a guide wheel seat (134) fixedly installed on the bottom of the top plate (133).

4. The multi-depth sampling and detection device for water pollution detection according to claim 3, characterized in that: The sampling and detection assembly (130) also includes a detector (135) fixedly installed at the end of the telescopic rope (132), a sampling rod (136) fixedly installed at the bottom of the detector (135), and a filter probe (137) fixedly installed at the bottom of the sampling rod (136).

5. The multi-depth sampling and detection device for water pollution detection according to claim 4, characterized in that: The telescopic rope (132) is circumferentially wound in the annular groove of the wheel body of the guide wheel seat (134) at a preset winding ratio, and the outer periphery of the wheel body is provided with anti-slip texture.

6. The multi-depth sampling and detection device for water pollution detection according to claim 5, characterized in that: The positioning assembly (230) includes a fixed seat (231) fixedly installed at the end of the push rod (220), a positioning disk (232) fixedly installed in the inner cavity of the fixed seat (231), and a fixed block (233) fixedly installed on the outside of the positioning disk (232).

7. A multi-depth sampling and detection device for water pollution detection according to claim 6, characterized in that: The scraping assembly (240) includes a support ring sleeve (241) fixedly installed on the outside of the fixed block (233), an arc-shaped guide rail (242) fixedly installed on the bottom of the support ring sleeve (241), and a reciprocating drive block (243) movably locked at the bottom of the arc-shaped guide rail (242). The reciprocating drive block (243) reciprocates along the arc-shaped trajectory of the arc-shaped guide rail (242).

8. The multi-depth sampling and detection device for water pollution detection according to claim 7, characterized in that: The scraping assembly (240) also includes an elastic telescopic cylinder (244) fixedly installed at the bottom of the reciprocating drive block (243), and a nylon scraper (245) fixedly installed at the telescopic end of the elastic telescopic cylinder (244). The support ring (241) is movably sleeved on the outside of the filter probe (137) to play a role in limiting and stabilizing. The scraping surface of the nylon scraper (245) is in close contact with the outer surface of the filter probe (137).

9. A multi-depth sampling and detection device for water pollution detection according to claim 8, characterized in that: The elastic telescopic cylinder (244) has a telescopic stroke of 5–10 mm and maintains a constant pressure of 0.3–0.8 N.

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