Multifunctional sampling device for water quality detection

Abstract

This invention relates to the field of water quality testing, and more particularly to a multifunctional sampling device for water quality testing, comprising a sampling cylinder, a pull rod, a sliding sleeve, and a handle; the sampling cylinder is equipped with a handle; the sampling cylinder has a sampling chamber, and the sampling chamber has a sampling port; a piston is slidably connected to the sampling chamber; a pull rod for pulling the piston is slidably connected to the sampling cylinder; a sliding sleeve is slidably connected to the sampling cylinder; two push rods are installed on the sliding sleeve; a second sliding sleeve is slidably connected to the sampling cylinder and is connected to the push rods; a fixing ring is fixedly connected to the sampling cylinder; a spherical cage is fixedly connected to the fixing ring and fixedly connected to the second sliding sleeve; sampling ports one and two are located inside the spherical cage, and the spherical cage is made of a deformable material; the sampling cylinder has a sampling chamber two. By expanding the spherical cage, aquatic plants are pushed away from the sampling port and isolated, thereby preventing aquatic plants from entering the sampling device with the water flow and causing blockage during sampling.

Description

Technical Field

[0001] This invention relates to the field of water quality testing, and more particularly to a multifunctional sampling device for water quality testing. Background Technology

[0002] Humans cannot live without water in their daily lives and production activities, making water quality a major concern. To gain a comprehensive understanding of water quality, it is necessary to test multiple parameters of the water sample.

[0003] River water quality monitoring is a core foundational task in water environment management, aiming to understand the status of water quality and protect the ecological security of water resources. In some remote rivers, abundant aquatic plants have a dual impact on water quality: they can either improve water quality or, under certain conditions, exacerbate pollution. Therefore, current water quality monitoring processes require sampling water bodies in areas with abundant aquatic plants. However, during actual sampling, aquatic plants easily enter the sampler with the water flow, causing equipment blockage. Furthermore, aquatic plants can easily contaminate the sample, increasing the difficulty of subsequent testing. In addition, abundant aquatic plants can obstruct underwater visibility, making it difficult to avoid local interference during sampling, such as determining whether the sampling port is adjacent to clumps of decaying aquatic plants or a layer of silt.

[0004] In summary, this application proposes a multifunctional sampling device for water quality testing, which improves the aforementioned technical problems. Summary of the Invention

[0005] To overcome the shortcomings of water plants easily entering the sampler with the water flow during actual sampling, causing equipment blockage, and the fact that water plants are easily mixed into the sample, increasing the difficulty of subsequent testing, this invention provides a multifunctional sampling device for water quality testing.

[0006] The technical implementation scheme of the present invention is as follows: a multifunctional sampling device for water quality testing, including a sampling cylinder and a handle; the sampling cylinder is provided with a handle; it also includes a pull rod 1; the sampling cylinder has a sampling chamber 1, and the sampling chamber 1 has a sampling port 1; the sampling chamber 1 is slidably connected to a piston 1; the sampling cylinder is slidably connected to a pull rod 1 for pulling the piston 1 to move; the sampling cylinder is slidably connected to a sliding sleeve 1; the sliding sleeve 1 is equipped with two push rods; the sampling cylinder is slidably connected to a sliding sleeve 2, and the sliding sleeve 2 is connected to the push rods; the sampling cylinder is fixedly connected to a fixing ring; the fixing ring is fixedly connected to a spherical cage fixedly connected to the sliding sleeve 2, the sampling port 1 and the sampling port 2 are located inside the spherical cage, and the spherical cage is made of a deformable material; the sampling cylinder has a sampling chamber 2; the sampling chamber 2 has a sampling port 2; the sampling chamber 2 is slidably connected to a piston 2; the sampling cylinder is slidably connected to a pull rod 2 for pulling the piston 2 to move, and the pull rod 2 is fixedly connected to the piston 2.

[0007] By adopting the above-described structure, this invention achieves the effect of spreading the aquatic plants away from the sampling port and isolating them, thereby preventing the aquatic plants from entering the sampling equipment with the water flow and causing equipment blockage during sampling.

[0008] More preferably, it also includes a rotating ring; a rotating ring is fixedly connected to the upper end of all push rods; a sliding sleeve 1 has an arc-shaped groove 1; a sliding sleeve 2 has an arc-shaped groove 2, and the push rod rotates within the arc-shaped groove 1 and the arc-shaped groove 2; an arc-shaped groove 1 has a transverse groove 1; the push rod is provided with a protrusion 1, and the protrusion 1 slides within the transverse groove 1; an arc-shaped groove 2 has a transverse groove 2; the push rod is provided with a protrusion 2, and the protrusion 2 slides within the transverse groove 2; a rotating plate 1 is rotatably connected to the sliding sleeve 2 and fixedly connected to the lower end of the push rod; a fixed ring is rotatably connected to the rotating plate 2; a number of arc-shaped rods arranged in a circular array are fixedly connected to the rotating plate 1 and the rotating plate 2; each arc-shaped rod is fixedly connected to a lever plate, the arc-shaped rods and lever plates are made of deformable material, and the lever plates pass through the spherical cage; a baffle corresponding to the number of lever plates is fixedly connected to the surface of the spherical cage, and the baffle plates are made of deformable material.

[0009] By adopting the above structure, the present invention achieves the effect of gathering aquatic plants between the deflector plate 114 and the baffle plate 116, thereby reducing the aquatic plant adhesion area on the outer surface of the spherical cage 8.

[0010] More preferably, a magnet is provided on one side wall of the arc-shaped groove, and the push rod is made of stainless steel.

[0011] More preferably, it also includes a circular plate and insert rods; the sampling cylinder is fixedly connected to the circular plate; the circular plate is fixedly connected to a number of insert rods arranged in a ring array.

[0012] More preferably, it also includes a counterweight cone; the sampling cylinder is fixedly connected to the counterweight cone.

[0013] More preferably, the circular plate is made of a transparent material.

[0014] More preferably, the circular plate has several drainage holes.

[0015] More preferably, it also includes pressure rods; two pressure rods are slidably connected to the circular plate, and the pressure rods are slidably connected to the sampling cylinder; the two pressure rods are jointly fixed to a circular ring; the circular ring is fixed to several movable plates that are slidably connected to the circular plate; the movable plates are fixed to springs, and the springs are fixed to the circular plate; the circular plate has a storage groove; each insertion rod has a sliding groove; each sliding groove is slidably connected to a slider, which is made of stainless steel; all sliders are jointly fixed to a net bag, which is located in the storage groove and fixed to the circular plate; each insertion rod is fixed to a magnetic block for magnetically attracting the slider; several counterweight plates are fixed to the lower end of the net bag.

[0016] By adopting the above structure, the present invention achieves the effect of covering the sampling tube 1, thereby confining the pollutants around the sampling tube 1 during the process of shaking off pollutants from the surface of aquatic plants, so as to facilitate the sampling effect.

[0017] More preferably, the cross-sectional width of the counterweight plate is the same as the cross-sectional width of the storage slot.

[0018] More preferably, the counterweight plate has several through holes.

[0019] Compared with the prior art, the present invention has the following advantages: by expanding the spherical cage to spread the aquatic plants away from the sampling port, the aquatic plants are isolated, thereby preventing them from entering the sampling equipment with the water flow and causing blockage. Furthermore, spreading the aquatic plants allows for real-time observation of the sampling process, enabling the identification of any blockages such as tightly packed clumps of decaying aquatic plants or layers of silt, allowing for timely intervention to avoid such blockages.

[0020] By repeatedly contracting and expanding the spherical cage, the surrounding aquatic plants are shaken and agitated, dislodging pollutants adsorbed on the plant surface and releasing them back into the water. Then, a manual pull rod is moved upwards, causing a piston to move and drawing the released water into sampling chamber two through sampling port two. This allows for the sampling of pollutants adhering to the aquatic plant surface. Subsequently, the pollutant content in sampling chamber one and sampling chamber two is tested and compared to assess the amount of pollutants adsorbed on the aquatic plant surface, facilitating the scientific development of aquatic plant maintenance, harvesting, and water quality management. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the multifunctional sampling device for water quality testing disclosed in this invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the sampling tube disclosed in this invention;

[0023] Figure 3 This is a schematic diagram of the upper side of the sampling cylinder disclosed in this invention;

[0024] Figure 4 This is a schematic diagram of the structure of the sliding sleeve, push rod, and rotating ring assembly disclosed in this invention;

[0025] Figure 5 This is a schematic diagram of the structure of the circular plate, insert rod, and counterweight cone head assembly disclosed in this invention.

[0026] Figure 6 This is a schematic diagram of the specific structure of the spherical cage disclosed in this invention;

[0027] Figure 7 This is a schematic diagram of the bottom structure of the circular plate disclosed in this invention;

[0028] Figure 8 This is a schematic diagram of the structure of the combination of movable plate, slider, net, magnetic block and counterweight plate disclosed in this invention;

[0029] Figure 9This is a diagram showing the state of the net being pulled out according to the present invention.

[0030] The components in the attached diagram are labeled as follows: 1-Sampling cylinder, 2-Handle, 3-Pull rod one, 4-Piston one, 5-Sliding sleeve one, 6-Push rod, 7-Sliding sleeve two, 8-Spherical cage, 9-Fixing ring, 101-Pull rod two, 102-Piston two, 111-Rotating ring, 112-Rotating plate one, 113-Arc rod, 114-Pulley plate, 115-Rotating plate two, 116-Baffle, 121-Circular plate, 122-Insertion rod, 123-Counterweight cone, 201-Pressure rod, 20 2-Ring, 203-Modular plate, 204-Slider, 205-Net bag, 206-Magnet, 207-Counterweight plate, 1001-Sampling chamber one, 1002-Sampling port one, 1003-Sampling chamber two, 1004-Sampling port two, 51-Arc groove one, 52-Horizontal groove one, 53-Magnet, 61-Protrusion one, 62-Protrusion two, 71-Arc groove two, 72-Horizontal groove two, 12101-Storage groove, 12201-Slide groove, 20301-Spring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: A multifunctional sampling device for water quality testing, referring to... Figures 1-9As shown, it includes a sampling cylinder 1 and a handle 2; the sampling cylinder 1 is provided with the handle 2; characterized in that it also includes a pull rod 3; the sampling cylinder 1 has a sampling chamber 1001, and the sampling chamber 1001 has a sampling port 1002; a piston 4 is slidably connected in the sampling chamber 1001; the pull rod 3 is slidably connected in the sampling cylinder 1, and the pull rod 3 is used to pull the piston 4 to move; a sliding sleeve 5 is slidably connected in the sampling cylinder 1; two push rods 6 are installed on the sliding sleeve 5; a second sliding sleeve 7 is slidably connected in the sampling cylinder 1, and the second sliding sleeve 7 is connected to the push rods 6; the sampling cylinder 1 is fixed A fixed ring 9 is connected; a spherical cage 8 is fixedly connected to the fixed ring 9, and the spherical cage 8 is fixedly connected to the sliding sleeve 7. The sampling port 1002 and the sampling port 1004 are located inside the spherical cage 8, and the spherical cage 8 is made of a deformable material; a sampling chamber 1003 is opened inside the sampling cylinder 1; a sampling port 1004 is opened on the sampling chamber 1003; a piston 102 is slidably connected inside the sampling chamber 1003; a pull rod 101 is slidably connected to the sampling cylinder 1, and the pull rod 101 is used to pull the piston 102 to move, and the pull rod 101 is fixedly connected to the piston 102.

[0033] It also includes a rotating ring 111, a rotating plate 112, an arc-shaped rod 113, a lever 114, a rotating plate 115, and a baffle 116; all push rods 6 are fixedly connected to a rotating ring 111 at their upper ends; a sliding sleeve 15 has an arc-shaped groove 51; a sliding sleeve 27 has an arc-shaped groove 71, and the push rod 6 rotates within the arc-shaped groove 51 and the arc-shaped groove 71; an arc-shaped groove 51 has a transverse groove 52; the push rod 6 is provided with a protrusion 61, and the protrusion 61 slides within the transverse groove 52; an arc-shaped groove 71 has a transverse groove 72; the push rod 6 is provided with a protrusion 62, and the protrusion 62 slides within the transverse groove 71. 2. Sliding within; a rotating plate 112 is rotatably connected to the lower side of the sliding sleeve 2 7, and the lower end of the push rod 6 passes through the arc-shaped groove 2 71 and is fixedly connected to the rotating plate 112; a rotating plate 2 115 is rotatably connected to the upper side of the fixed ring 9; four arc-shaped rods 113 arranged in a circular array are fixedly connected to the rotating plate 112 and the rotating plate 2 115; each arc-shaped rod 113 is fixedly connected to a lever 114, the arc-shaped rods 113 and the lever 114 are made of deformable material, and the lever 114 passes through the spherical cage 8; a baffle 116 corresponding to the number of levers 114 is fixedly connected to the surface of the spherical cage 8, and the baffle 116 is made of deformable material.

[0034] A magnet 53 is installed on the side wall of the arc-shaped groove 51. The push rod 6 is made of stainless steel. When the push rod 6 is rotated to one side of the arc-shaped groove 51, it is magnetically attracted by the magnet 53, eliminating the need for manual support and freeing up both hands for sampling.

[0035] It also includes a circular plate 121 and insert rods 122; the sampling cylinder 1 is bolted to the circular plate 121; the circular plate 121 is fixedly connected to four insert rods 122 arranged in a ring array.

[0036] It also includes a counterweight cone 123; the bottom of the sampling cylinder 1 is fixed with a counterweight cone 123.

[0037] The outer surface of the slide sleeve 5 is rough to facilitate manual gripping and pushing it up and down.

[0038] The circular plate 121 is made of transparent material to facilitate manual observation of underwater sampling.

[0039] The circular plate 121 has several drainage holes. When it moves down into the water, the water below the circular plate 121 can flow through the drainage holes, thereby avoiding significant disturbance to the water body during the downward movement.

[0040] When sampling areas with abundant aquatic plants in a river, the sampling tube 1 is manually inserted into the water. One hand holds the sampling tube 1, while the other pulls lever 3, causing piston 4 to move upwards. This draws water through sampling port 1002 into sampling chamber 1001, thus completing the sampling of the area with abundant aquatic plants. Subsequently, by pushing lever 3 and piston 4 downwards, the sample is discharged, allowing for water quality testing and analysis of the aquatic plant-rich area. The water quality is then compared with that of water without aquatic plants to assess the impact of the plants on water quality. However, during sampling, aquatic plants can easily enter the sampling equipment with the water flow, causing blockages, and the sample can easily become contaminated with aquatic plants, increasing the difficulty of subsequent testing. Therefore, initially, the operator holds sliding sleeve 5 and pushes it upwards. Sliding sleeve 5 then moves push rod 6 and sliding sleeve 7 upwards, thereby pulling the spherical... The upper end of cage 8 moves upward, deforming and shrinking as a whole, approaching the surface of sampling tube 1. This reduces the volume of the spherical cage 8, minimizing interference with aquatic plants when sampling tube 1 is submerged in water. After reaching the designated depth, the sliding sleeve 5 is manually pushed downward, causing the upper end of the spherical cage 8 to expand and push away the aquatic plants near sampling port 1002. Then, the lever 3 is pulled to extract the sample. The expansion of the spherical cage 8 pushes the aquatic plants away from sampling port 1002, isolating them and preventing them from entering the sampling equipment with the water flow, thus preventing blockage. Furthermore, the expansion of the aquatic plants allows for real-time observation of the sampling process, enabling timely intervention to prevent blockages caused by tightly packed clumps of decaying aquatic plants or layers of silt.

[0041] Because aquatic plants typically have rough, porous surfaces with a large adsorption area, and because their surfaces are usually negatively charged, they can adsorb positively charged heavy metal ions through electrostatic interactions. Aquatic plant surfaces adsorb a certain amount of heavy metal pollutants such as phosphorus and other microorganisms. These adsorbed pollutants are easily released back into the water under environmental disturbances (such as wind, waves, boats, and swimming). Current sampling and testing methods lack the ability to detect these pollutants, which will affect the subsequent scientific formulation of aquatic plant maintenance, harvesting, and water quality management. Therefore, after extracting from sampling chamber 1001, the sliding sleeve 5 is manually pushed up and down on sampling cylinder 1. The sliding sleeve 5 causes the spherical cage 8 to reciprocate in and out, releasing water through the spherical cage 8. The repeated contraction and expansion action shakes and agitates the surrounding aquatic plants, dislodging pollutants adsorbed on their surfaces and releasing them back into the water. After the sliding sleeve 5 moves back and forth a dozen times, it stops, and the spherical cage 8 is in an expanded state. Then, the pull rod 101 is manually pulled upwards, which drives the piston 102 to move, drawing the water after the pollutants have been released into the sampling chamber 1003 through the sampling port 1004. This allows for the sampling of pollutants adsorbed on the surface of the aquatic plants. Subsequently, the pollutant content in the sampling chambers 1001 and 1003 is tested and compared to assess the amount of pollutants adsorbed on the surface of the aquatic plants, which will help to scientifically formulate aquatic plant maintenance, harvesting, and water quality management strategies.

[0042] Meanwhile, considering that during the expansion of the spherical cage 8, the aquatic plants adhere to a large area of ​​the outer surface of the cage 8, when shaking off the pollutants attached to the surface of the aquatic plants for sampling, the pollutants released into the water are easily blocked by the aquatic plants again and easily re-attached to the surface of the aquatic plants, resulting in a decrease in the pollutant content in the sample and affecting the accuracy of subsequent test results; therefore, after the aquatic plants are shaken and the spherical cage 8 is in an expanded state, the operator holds the sliding sleeve 5 with one hand and rotates the rotating ring 111 with the other hand. The rotating ring 111 drives the push rod 6 to rotate within the arc-shaped groove 51 and the arc-shaped groove 71. Push rod 6 drives rotating plate 112, arc rod 113, lever 114 and rotating plate 115 to rotate until push rod 6 rotates from one side of arc groove 51 and arc groove 71 to the other side, and causes protrusion 61 and protrusion 62 to move in transverse groove 52 and transverse groove 72 respectively. Through the rotation of lever 114, the aquatic plants on the outer surface of spherical cage 8 are pushed away and the aquatic plants are gathered between lever 114 and baffle 116, thereby reducing the contact area of ​​aquatic plants on the outer surface of spherical cage 8, increasing the content of pollutants extracted from the released water, and thus improving the accuracy of subsequent detection results.

[0043] Furthermore, considering that the sampling tube 1 is prone to displacement during the sampling process, which may cause changes in the sampling position and affect the accuracy of subsequent test results, the spherical cage 8 is deformed and contracted during sampling. The sampling tube 1 is then manually inserted vertically downwards into the water until the insertion rod 122 on the circular plate 121 is inserted into the river bottom to fix the sampling tube 1, thereby improving the stability of the sampling process. In addition, a counterweight cone 123 is provided at the bottom of the sampling tube 1, which makes the overall center of gravity of the sampling tube 1 lower, thus improving the overall stability of the sampling process.

[0044] Example 2: Based on Example 1, referring to... Figure 5 and Figures 7-9 As shown, it also includes a pressure rod 201, a ring 202, a movable plate 203, a slider 204, a net 205, a magnetic block 206, and a counterweight plate 207; the circular plate 121 is slidably connected to two pressure rods 201, and the pressure rods 201 are slidably connected to the sampling cylinder 1; the lower ends of the two pressure rods 201 are fixedly connected to a ring 202; the ring 202 is fixedly connected to several movable plates 203, and the movable plates 203 are slidably connected to the circular plate 121; the movable plates 203 are fixedly connected to springs 20301, and the springs 20301 are... 1. Fixed to the circular plate 121; the circular plate 121 has a storage groove 12101; each insert rod 122 has a sliding groove 12201; each sliding groove 12201 is slidably connected to a slider 204, which is made of stainless steel; all sliders 204 are fixedly connected to a net bag 205, and the net bag 205 is located in the storage groove 12101 and fixedly connected to the circular plate 121; each insert rod 122 is fixedly connected to a magnet 206; several counterweight plates 207 are fixedly connected to the lower end of the net bag 205.

[0045] The cross-sectional width of the counterweight plate 207 is the same as the cross-sectional width of the storage slot 12101. When storing, it is convenient to seal the storage slot 12101 to prevent the net bag 205 from falling off.

[0046] The counterweight plate 207 has several through holes. After the equipment completes sampling, the water in the storage tank 12101 is drained through the through holes of the counterweight plate 207 to prevent water accumulation from affecting subsequent use.

[0047] Based on the above embodiment 1, when sampling pollutants from the surface of aquatic plants, it is considered that during the expansion of the spherical cage 8, the aquatic plants will be pushed away from the sampling cylinder 1, which may cause some of the shaken pollutants to move away from the sampling cylinder 1, thereby reducing the pollutant content during subsequent sampling; therefore, initially, the slider 204 is magnetically attracted by the magnetic block 206, and the net bag 205 is stored in the storage groove 12101. Before pushing the sliding sleeve 5 to move up and down repeatedly, the manual first presses the pressure rod 201. The pressure rod 201 drives the ring 202 and the movable plate 203 to move down, the spring 20301 is stretched and deformed, and the movable plate 203 pushes the slider 204 down along the slide groove 12201 of the insertion rod 122, so that the slider 204 is separated from the magnetic block 206. Under the action of the counterweight plate 207, the slider 204 moves down along the slide groove 12201 and pulls out the net bag 205, as shown. Figure 9 As shown, the sampling tube 1 is covered by a net 205, which confines the pollutants around the sampling tube 1 while shaking off the pollutants from the surface of the aquatic plants, so that they can be sampled and the pollutant content in the sample can be increased. After the overall sampling is completed, the entire device is cleaned manually and the net 205 is put back into the storage tank 12101 for subsequent use.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multifunctional sampling device for water quality testing, comprising a sampling tube (1) and a handle (2); the sampling tube (1) is provided with a handle (2); characterized in that: It also includes a pull rod (3); the sampling cylinder (1) has a sampling chamber (1001) and a sampling port (1002); the sampling chamber (1001) is slidably connected to a piston (4); the sampling cylinder (1) is slidably connected to a pull rod (3) for pulling the piston (4) to move; the sampling cylinder (1) is slidably connected to a sliding sleeve (5); the sliding sleeve (5) is equipped with two push rods (6); the sampling cylinder (1) is slidably connected to a sliding sleeve (7), and the sliding sleeve (7) is connected to the push rod (6); the sampling cylinder (1) is fixedly connected to a fixing ring (9); The ring (9) is fixedly connected to a spherical cage (8) which is fixedly connected to the sliding sleeve (7). The sampling port (1002) and the sampling port (2) are located inside the spherical cage (8). The spherical cage (8) is made of a deformable material. The sampling cylinder (1) has a sampling chamber (1003). The sampling chamber (1003) has a sampling port (1004). The sampling chamber (1003) is slidably connected to a piston (102). The sampling cylinder (1) is slidably connected to a pull rod (101) for pulling the piston (102) to move, and the pull rod (101) is fixedly connected to the piston (102).

2. A multifunctional sampling device for water quality testing according to claim 1, characterized in that: It also includes a rotating ring (111); all push rods (6) are fixedly connected to a rotating ring (111) at their upper ends; the first sliding sleeve (5) has an arc groove (51); the second sliding sleeve (7) has an arc groove (71), and the push rod (6) rotates in the arc groove (51) and the arc groove (71); the first arc groove (51) has a transverse groove (52); the push rod (6) is provided with a protrusion (61), and the protrusion (61) slides in the transverse groove (52); the second arc groove (71) has a transverse groove (72); the push rod (6) is provided with a protrusion (62), and the protrusion (62) slides in the transverse groove (72). The sliding sleeve (7) is rotatably connected to a rotating plate (112) fixed to the lower end of the push rod (6); the fixed ring (9) is rotatably connected to a rotating plate (115); the rotating plate (112) and the rotating plate (115) are together fixed to several arc-shaped rods (113) arranged in a ring array; each arc-shaped rod (113) is fixed to a lever (114), the arc-shaped rods (113) and the levers (114) are made of deformable material, and the levers (114) pass through the spherical cage (8); the surface of the spherical cage (8) is fixed to a baffle (116) corresponding to the number of levers (114), and the baffles (116) are made of deformable material.

3. A multifunctional sampling device for water quality testing according to claim 2, characterized in that: A magnet (53) is installed on the side wall of the arc groove (51), and the push rod (6) is made of stainless steel.

4. A multifunctional sampling device for water quality testing according to claim 1, characterized in that: It also includes a circular plate (121) and insert rods (122); the sampling tube (1) is fixedly connected to the circular plate (121); the circular plate (121) is fixedly connected to several insert rods (122) arranged in a ring array.

5. A multifunctional sampling device for water quality testing according to claim 1, characterized in that: It also includes a counterweight cone (123); the sampling cylinder (1) is fixedly connected to the counterweight cone (123).

6. A multifunctional sampling device for water quality testing according to claim 4, characterized in that: The circular plate (121) is set to a transparent material.

7. A multifunctional sampling device for water quality testing according to claim 4, characterized in that: The circular plate (121) has several drainage holes.

8. A multifunctional sampling device for water quality testing according to claim 4, characterized in that: It also includes a pressure rod (201); the circular plate (121) is slidably connected to two pressure rods (201), and the pressure rods (201) are slidably connected to the sampling cylinder (1); the two pressure rods (201) are jointly fixed to a circular ring (202); the circular ring (202) is fixedly connected to several movable plates (203) that are slidably connected to the circular plate (121); the movable plates (203) are fixedly connected to springs (20301), and the springs (20301) are fixedly connected to the circular plate (121); the circular plate (121) has a storage groove (12101); each insert Each rod (122) has a groove (12201); each groove (12201) is slidably connected to a slider (204), which is made of stainless steel; all sliders (204) are fixedly connected to a net bag (205), which is located in the storage slot (12101) and fixedly connected to the round plate (121); each insert rod (122) is fixedly connected to a magnet (206) for magnetically attracting the slider (204); several counterweight plates (207) are fixedly connected to the lower end of the net bag (205).

9. A multifunctional sampling device for water quality testing according to claim 8, characterized in that: The cross-sectional width of the counterweight plate (207) is the same as the cross-sectional width of the storage slot (12101).

10. A multifunctional sampling device for water quality testing according to any one of claims 8-9, characterized in that: The counterweight plate (207) has several through holes.

Images