Marine culture water quality detection sampling device

Abstract

This utility model belongs to the field of marine aquaculture water quality monitoring technology, specifically a marine aquaculture water quality testing and sampling device. It includes a support assembly for support and fixation, and a sampling assembly for extracting seawater is installed inside the support assembly. When maintenance of the filter assembly is required, first remove the positioning pin to release the fixation. By rotating the inlet cylinder, utilizing its engagement with the spiral teeth of the inlet sleeve, the inlet cylinder can be unscrewed to clean impurities. During installation, align the inlet cylinder with the inlet sleeve, rotate it in the opposite direction, and push it in to ensure tight engagement of the spiral teeth. Then, insert the positioning pin to fix it, achieving quick maintenance and reducing equipment maintenance costs. When the filter assembly is working, the annularly distributed debris-blocking ring blades first intercept larger floating objects, the protective cover screen filters medium-sized particles, and the fine filter screen traps tiny impurities. The three-layer structure works synergistically to ensure smooth water flow while intercepting impurities of different particle sizes, improving the purity of the sampled water.

Description

Technical Field

[0001] This utility model belongs to the field of marine aquaculture water quality monitoring technology, specifically a marine aquaculture water quality testing and sampling device. Background Technology

[0002] Marine aquaculture primarily targets fish, shrimp, crabs, shellfish, and algae, and is an important component of the aquaculture industry. Marine aquaculture has very high requirements for water quality, typically requiring testing of the seawater's pH value, temperature, salinity, and microbial composition.

[0003] A search revealed that patent CN217331748U discloses a sampling device for testing the water quality of seawater aquaculture. The device includes a circular float with several sampling tubes of progressively increasing length at the bottom. Each sampling tube has an inlet and outlet nozzle with a check valve at its bottom. A cylinder is located at the top of the float, and the piston rod of the cylinder is connected to a control box. A lever is located at the bottom of the control box, inserted into its corresponding sampling tube, with a silicone pad at its bottom. A detector is located inside the control box, with its detection head fixed to the bottom of the corresponding silicone pad. A display screen is embedded in the control box, and the detector is connected to the display screen. The advantages of this invention are that it can sample seawater at different depths, perform online detection of pH, temperature, or salinity, and display the results on the screen. It can also discharge the sampled seawater from the outlet nozzle into a petri dish for observation of the microbial composition in the seawater.

[0004] However, seawater often contains large floating objects such as seaweed and dead branches, as well as particulate impurities such as silt and microorganisms. During seawater sampling, these impurities tend to accumulate and remain in the sampling device, which not only affects the sampling efficiency but also reduces the purity of the seawater sampled. In addition, when the filter screen intercepts and filters seawater for a long time, the impurities tend to clog the mesh, resulting in a decrease in filtration effect. Furthermore, the structural design of existing filter components often makes it inconvenient to disassemble and install the filter screen, which further affects the ease of use and reliability of the sampling device. Summary of the Invention

[0005] The purpose of this invention is to provide a sampling device for testing the water quality of marine aquaculture, so as to solve the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a seawater aquaculture water quality testing and sampling device, including a support component for support and fixation, a sampling component for extracting seawater is installed inside the support component, a water inlet component for water intake is arranged below the sampling component, and a filter component for filtering impurities is arranged inside the water inlet component.

[0007] As a preferred embodiment of the above technical solution, the support assembly includes a fixed plate and legs, the legs being symmetrically fixed to the four corners of the bottom surface of the fixed plate, and four sets of legs are provided.

[0008] As a preferred embodiment of the above technical solution, the sampling assembly includes a telescopic sleeve, which is movably mounted on the bottom surface of the fixed plate. A sampling cylinder is fixed inside the telescopic sleeve, and a depth scale is provided on the front of the sampling cylinder. A cylinder is provided on both sides of the sampling cylinder. A fixed rod is connected to the telescopic end of the cylinder, and the cylinder is connected to a cover ring through the fixed rod. A pull rod is connected to the bottom surface of the cover ring.

[0009] As a preferred embodiment of the above technical solution, the pull rod extends through the sampling tube to the inner wall of the storage tube, a piston is provided on the bottom surface of the pull rod, a limit ring is fixed on the bottom surface of the sampling tube, and cylinders are provided on both sides of the top surface of the telescopic sleeve. The telescopic ends of the cylinders are connected to the telescopic sleeve through the fixed plate.

[0010] As a preferred embodiment of the above technical solution, the water inlet assembly includes a water inlet sleeve, which is fixed to the bottom surface of the telescopic sleeve. The inner diameter of the water inlet sleeve has a helical tooth structure, and the inner wall of the water inlet sleeve is provided with a water inlet cylinder. The outer diameter of the water inlet cylinder also has a helical tooth structure. The water inlet cylinder and the water inlet sleeve are adapted to each other. Corresponding slots are provided on both sides of the water inlet cylinder and the water inlet sleeve, and positioning pins are provided on the inner wall of the slots.

[0011] As a preferred embodiment of the above technical solution, the filter assembly includes a dirt-blocking ring, which is fixed to the bottom surface of the inner wall of the water inlet cylinder. The dirt-blocking ring is blade-shaped and has several blades. A protective cover is fixed above the dirt-blocking ring, and the outer surface of the protective cover has a sieve-like structure. A filter screen is fixed above the protective cover.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] When maintaining the filter assembly of this utility model, first pull out the positioning pin to release the fixation, and then rotate the water inlet cylinder to use its engagement with the spiral teeth of the water inlet sleeve to unscrew the water inlet cylinder and clean the impurities; during installation, align the water inlet cylinder with the water inlet sleeve and rotate it in the opposite direction to push it in, so that the spiral teeth are tightly engaged, and then insert the positioning pin to fix it, so as to achieve quick maintenance and reduce equipment maintenance costs.

[0014] When this utility model's filter assembly is in operation, the ring-shaped debris-blocking blades first intercept larger floating objects, the protective cover screen filters medium-sized particles, and the fine filter screen traps tiny impurities. The three-layer structure works together to ensure smooth water flow while intercepting impurities of different sizes, thus improving the purity of the sampled water. Attached Figure Description

[0015] Figure 1 This is a left-view stereoscopic structural diagram of the present invention;

[0016] Figure 2 This is a right-view three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a cross-sectional structural diagram of the telescopic sleeve and sampling cylinder of this utility model;

[0018] Figure 4 This is a schematic diagram of the water inlet assembly of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the filter assembly of this utility model.

[0020] In the diagram: 1. Support assembly; 101. Fixing plate; 102. Support leg; 2. Sampling assembly; 2001. Telescopic sleeve; 201. Sampling cylinder; 202. Depth gauge; 203. Cylinder 1; 204. Fixing rod; 205. Cover ring; 206. Pull rod; 207. Sample storage cylinder; 208. Piston; 209. Limiting ring; 210. Cylinder 2; 3. Water inlet assembly; 301. Water inlet sleeve; 302. Water inlet cylinder; 303. Positioning pin; 4. Filter assembly; 401. Trash ring; 402. Protective cover; 403. Filter screen. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] like Figures 1-5 As shown, this utility model provides a technical solution: a seawater aquaculture water quality testing and sampling device, including a support component 1 for support and fixation, a sampling component 2 for extracting seawater is installed inside the support component 1, a water inlet component 3 for water intake is arranged below the sampling component 2, and a filter component 4 for filtering impurities is arranged inside the water inlet component 3.

[0023] As one implementation method in this embodiment, such as Figure 2 and Figure 3As shown, the sampling assembly 2 includes a telescopic sleeve 2001, which is movably installed on the bottom surface of the fixed plate 101. A sampling cylinder 201 is fixed inside the telescopic sleeve 2001. A depth scale 202 is provided on the front of the sampling cylinder 201. Cylinder 1 203 is provided on both sides of the sampling cylinder 201. A fixed rod 204 is connected to the telescopic end of cylinder 1 203. Cylinder 1 203 is connected to a cover ring 205 through the fixed rod 204. A pull rod 206 is connected to the bottom surface of the cover ring 205. The pull rod 206 extends through the sampling cylinder 201 to the inner wall of the sample storage cylinder 207. A piston 208 is provided on the bottom surface of the pull rod 206. A limit ring 209 is fixed on the bottom surface of the sampling cylinder 201. Cylinder 210 is provided on both sides of the top surface of the telescopic sleeve 2001. The telescopic end of cylinder 210 is connected to the telescopic sleeve 2001 through the fixed plate 101.

[0024] Furthermore, when sampling component 2 is working, the telescopic end of cylinder 210 extends, pushing the telescopic sleeve 2001 to move smoothly downward along the outside of sampling cylinder 201. When the telescopic sleeve 2001 approaches the target position, the limiting ring 209 installed at the bottom of sampling cylinder 201 locks the telescopic sleeve 2001 to prevent it from moving too far downward, ensuring the stability and safety of the entire device. At the same time, as the telescopic sleeve 2001 moves downward, the depth scale 202 on the outside of the storage cylinder 207 is gradually revealed, thus displaying the sampling depth. Observing the water depth of the telescopic sleeve 2001 through the depth scale 202 facilitates control of the sampling position and ensures that the sampling cylinder 201 can accurately reach the target. When the sampling cylinder 201 reaches the predetermined depth, cylinder 210 quickly receives a stop command, and its telescopic end immediately stops moving, firmly fixing the position of the telescopic sleeve 2001. During sampling, the telescopic ends of cylinders 203 on both sides push the cover ring 205 upward through the fixing rod 204. The movement of the cover ring 205 drives the connected pull rod 206 to move synchronously, thereby causing the piston 208 to slide upward in the sample storage cylinder 207. As the piston 208 moves upward, the internal space of the sample storage cylinder 207 increases, the air pressure decreases, and a strong suction force is formed. Under the action of this suction force, the external seawater quickly enters the sampling cylinder 201 through the water inlet assembly 3, realizing the efficient completion of the automated sampling operation.

[0025] As one implementation method in this embodiment, such as Figures 2-4 As shown, the water inlet assembly 3 includes a water inlet sleeve 301, which is fixed to the bottom surface of the telescopic sleeve 2001. The inner diameter of the water inlet sleeve 301 has a helical tooth structure, and the inner wall of the water inlet sleeve 301 is provided with a water inlet cylinder 302. The outer diameter of the water inlet cylinder 302 also has a helical tooth structure. The water inlet cylinder 302 and the water inlet sleeve 301 are compatible. Corresponding slots are opened on both sides of the water inlet cylinder 302 and the water inlet sleeve 301. The inner wall of the slot is provided with a positioning pin 303.

[0026] Furthermore, when maintenance is required on filter assembly 4, during disassembly, first pull the positioning pin 303 out of the corresponding slots of the inlet sleeve 301 and the inlet cylinder 302 to release their fixed constraints. Then, utilizing the helical tooth structure of the inner diameter of the inlet sleeve 301 and the outer diameter of the inlet cylinder 302, slightly twist the inlet cylinder 302 clockwise or counterclockwise. The meshing characteristics of the helical teeth allow it to smoothly rotate out of the inlet sleeve 301 along a helical trajectory, quickly completing the separation and thoroughly cleaning any remaining sediment, algae, and other impurities. During reinstallation, the cleaned inlet cylinder... The inlet cylinder 302 is precisely aligned with the inlet of the inlet sleeve 301 and pushed in by rotating in the opposite direction along the spiral tooth trajectory. As the inlet cylinder 302 slowly screws in, its outer diameter spiral teeth mesh tightly with the inner diameter spiral teeth of the inlet sleeve 301, forming a stable and sealed connection structure. After the inlet cylinder 302 is fully in place, the positioning pin 303 is inserted into the corresponding slot to further lock the position of the inlet cylinder 302, preventing it from shifting due to water flow impact or vibration during sampling, ensuring that the filter assembly 4 returns to normal working condition. This achieves fast and efficient maintenance operations and effectively reduces the maintenance cost and time loss of the equipment.

[0027] As one implementation method in this embodiment, such as Figure 5 As shown, the filter assembly 4 includes a dirt-blocking ring 401, which is fixed to the bottom of the inner wall of the water inlet cylinder 302. The dirt-blocking ring 401 is blade-shaped and has several blades. A protective cover 402 is fixed above the dirt-blocking ring 401. The outer surface of the protective cover 402 has a sieve-like structure. A filter screen 403 is fixed above the protective cover 402.

[0028] Furthermore, when the filter assembly 4 is working, the several blades of the trap ring 401 are arranged in a ring to initially intercept large floating objects such as seaweed and dead branches in the seawater, preventing them from clogging the subsequent filter structure and reducing obstruction of the passage. The sieve-like structure on the outer surface of the protective cover 402 can further filter medium-sized particulate impurities, achieving graded filtration. Then, the filter screen 403 performs fine filtration of the seawater, intercepting small particles such as silt and microorganisms, ensuring the cleanliness of the seawater sample entering the sampling tube 201. Thus, through the synergistic effect of the three-layer structure of the trap ring 401, the protective cover 402, and the filter screen 403, it not only ensures smooth water flow but also intercepts impurities of different particle sizes, improving the purity of the sampled water.

[0029] Working principle: The sampling component 2 is supported and stabilized by the fixing plate 101 and the support leg 102. When the sampling component 2 is working, the second cylinder 210 pushes the telescopic sleeve 2001 down along the sampling cylinder 201. When it approaches the target position, the limiting ring 209 prevents it from moving excessively. At the same time, the depth scale 202 is exposed, and the water depth can be observed through its scale. When the predetermined depth is reached, the second cylinder 210 stops the patient and fixes the telescopic sleeve 2001. During sampling, the first cylinders 203 on both sides drive the cover ring 205 up through the fixing rod 204, and the rod 20 is pulled out. 6 and piston 208 move accordingly, forming suction in the sample storage cylinder 207, and seawater enters the sampling cylinder 201 through the water inlet assembly 3, completing automated sampling; when the filter assembly 4 needs maintenance, pull out the positioning pin 303 and rotate the water inlet cylinder 302 to clean impurities; during installation, rotate in the opposite direction and push in, insert the positioning pin 303 to fix it, which can achieve quick maintenance; when the filter assembly 4 is working, the three-layer structure of the dirt-blocking ring 401, protective cover 402 and filter screen 403 intercepts large, medium and small particles of impurities in sequence, which not only ensures the smooth flow of water, but also improves the cleanliness of the sampled water.

[0030] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A device for sampling water quality in mariculture, comprising a support assembly (1) for fixed support, characterized in that: The support component (1) is equipped with a sampling component (2) for extracting seawater. Below the sampling component (2) is a water inlet component (3) for water intake. Inside the water inlet component (3) is a filter component (4) for filtering impurities.

2. The water quality detection and sampling device for mariculture according to claim 1, characterized in that: The support assembly (1) includes a fixed plate (101) and legs (102). The legs (102) are symmetrically fixed to the four corners of the bottom surface of the fixed plate (101), and there are four sets of legs (102).

3. The water quality detection and sampling device for mariculture according to claim 1, characterized in that: The sampling assembly (2) includes a telescopic sleeve (2001), which is movably installed on the bottom surface of the fixed plate (101). A sampling cylinder (201) is fixed inside the telescopic sleeve (2001). A depth scale (202) is provided in front of the sampling cylinder (201). A cylinder (203) is provided on both sides of the sampling cylinder (201). A fixed rod (204) is connected to the telescopic end of the cylinder (203). The cylinder (203) is connected to the cover ring (205) through the fixed rod (204). A pull rod (206) is connected to the bottom surface of the cover ring (205).

4. The marine aquaculture water quality testing and sampling device according to claim 3, characterized in that: The pull rod (206) extends through the sampling cylinder (201) to the inner wall of the storage cylinder (207). A piston (208) is provided on the bottom surface of the pull rod (206). A limit ring (209) is fixed on the bottom surface of the sampling cylinder (201). Cylinders (210) are provided on both sides of the top surface of the telescopic sleeve (2001). The telescopic ends of the cylinders (210) are connected to the telescopic sleeve (2001) through the fixed plate (101).

5. The marine aquaculture water quality testing and sampling device according to claim 1, characterized in that: The water inlet assembly (3) includes a water inlet sleeve (301), which is fixed to the bottom surface of the telescopic sleeve (2001). The inner diameter of the water inlet sleeve (301) has a helical tooth structure. The inner wall of the water inlet sleeve (301) is provided with a water inlet cylinder (302). The outer diameter of the water inlet cylinder (302) has a helical tooth structure. The water inlet cylinder (302) and the water inlet sleeve (301) are adapted to each other. Corresponding slots are opened on both sides of the water inlet cylinder (302) and the water inlet sleeve (301). The inner wall of the slot is provided with a positioning pin (303).

6. The marine aquaculture water quality testing and sampling device according to claim 1, characterized in that: The filter assembly (4) includes a dirt-blocking ring (401), which is fixed to the bottom of the inner wall of the water inlet cylinder (302). The dirt-blocking ring (401) is blade-shaped and has several blades. A protective cover (402) is fixed above the dirt-blocking ring (401). The outer surface of the protective cover (402) has a sieve-like structure. A filter screen (403) is fixed above the protective cover (402).

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