Mobile water quality sampling instrument for water quality detection and use method thereof

Abstract

The invention discloses a mobile water quality sampling instrument for water quality detection and a use method thereof, and relates to the technical field of water quality sampling, the mobile water quality sampling instrument comprises a mounting rack and a sampling bottle, the bottom end of the mounting rack is fixedly connected with a floating plate, the outer wall of the floating plate is provided with a propeller, and the mobile water quality sampling instrument also comprises a moving mechanism and a sampling mechanism. By arranging the moving mechanism and the sampling mechanism, after a mounting frame moves to a designated position, a square block moves one end of a rotating disc, and a second motor operates to drive the square block to be inserted into a square groove; a third motor is started to drive a winding roller to rotate, the winding roller puts down a supporting rope to drive a sampling bottle to move downwards into the water body, and after the sampling bottle moves by a certain depth, a sampling hole is automatically opened for sampling operation; after sampling is completed, the square block moves to the next place and moves to one end of another rotating disc, sampling operation is carried out again, and sampling operation can be conveniently carried out on water bodies at different positions.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality sampling, and specifically to a water quality sampler for mobile water quality detection and its usage method. Background Art

[0002] Water quality is the abbreviation of water body quality, which marks the physical, chemical, and biological (bacteria, microorganisms, plankton) characteristics and the composition status of the water body. To evaluate the status of water body quality, a series of water quality parameters and water quality standards are stipulated, such as water quality standards for domestic drinking water, industrial water, and fishery water, etc. Before detecting the water quality, it is necessary to perform a sampling operation on the water. After collecting the water sample of the water body to be detected, through analysis and determination, the basic data of the water body can be obtained.

[0003] When sampling the water body, multi-point sampling should be carried out at different depths at multiple positions of the water body to make the subsequent detection more accurate. However, when sampling the water body, it is necessary to manually sample at different positions in sequence, and the operation is relatively complex and easily interferes with the actual situation of water body stratification. In order to achieve the purpose of facilitating the sampling of water bodies at different positions, therefore, a water quality sampler for mobile water quality detection and its usage method are provided. Summary of the Invention

[0004] The purpose of the present invention is to provide a water quality sampler for mobile water quality detection and its usage method to achieve the purpose of facilitating the sampling of water bodies at different positions.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A water quality sampler for mobile water quality detection, including an installation frame and a sampling bottle. A floating plate is fixedly connected to the bottom end of the installation frame, and a propeller is installed on the outer wall of the floating plate. The sampling bottle is displaced through a moving mechanism, and the sampling bottle performs a sampling operation through a sampling mechanism; the moving mechanism includes a movable groove, which is opened at the top end of the installation frame. An activity seat is slidably connected to the inner wall of the movable groove. A first motor is installed at one end of the installation frame, and the output end of the first motor is connected to a first threaded rod, which penetrates through the activity seat. A second motor is installed on the outer wall of the activity seat, and the output end of the second motor is connected to a second threaded rod. A displacement plate is slidably connected to the outer wall of the second threaded rod, and the displacement plate is slidably connected to the top end of the activity seat. A third motor is installed on the outer wall of the displacement plate, and the output end of the third motor is connected to a square block. A limiting frame is fixedly connected to the inner wall of the installation frame.

[0006] As a further solution of the present invention: The moving mechanism further includes a mounting plate, the mounting plate is symmetrically and fixedly connected to the top of the mounting frame, a connecting shaft is rotatably connected to the outer wall of the mounting plate, a winding roller is fixedly connected to the outer wall of the connecting shaft, a support rope is mounted on the outer wall of the winding roller, the sampling bottle is located at the bottom end of the support rope and inside the inner cavity of the limit frame, one end of the connecting shaft is fixedly connected to a rotating disk, a toothed ring is fixedly connected to the outer wall of the mounting plate outside the rotating disk, a square groove is opened at one end of the rotating disk, a block that extends out of the rotating disk is slidably connected inside the rotating disk, a first spring is connected between the block and the rotating disk, a spur gear is rotatably connected to the outer wall of the block inside the rotating disk, a pressing block is slidably connected to the outer wall of the spur gear inside the rotating disk, and one end of the pressing block extends into the inner cavity of the square groove.

[0007] As a further solution of the present invention: The sampling mechanism includes a connecting cover, the connecting cover is threadedly connected to the top of the sampling bottle, the bottom end of the support rope is fixedly connected to the connecting cover, a counterweight block is mounted at the bottom end of the sampling bottle, a sampling hole is opened at the top of the connecting cover, sliding grooves are opened on both sides of the sampling hole at the top of the connecting cover, fixing grooves are opened on the inner walls of the sliding grooves, a sliding rod is slidably connected to the inner walls of the sliding grooves, a baffle is fixedly connected to the top end of the sliding rod, a fixing block that extends out of the sliding rod is slidably connected inside the sliding rod, a second spring is connected between the fixing block and the sliding rod, a displacement frame is slidably connected inside the baffle and the sliding rod, the displacement frame penetrates through the fixing block, a connecting rope is fixedly connected to the top end of the displacement frame, and one end of the connecting rope is fixedly connected to the top of the limit frame.

[0008] As a further solution of the present invention: The inner wall of the movable groove fits with the outer wall of the movable seat, and a first threaded hole is opened on the outer wall of the movable seat, and the first threaded hole matches the first threaded rod.

[0009] As a further solution of the present invention: A second threaded hole is opened on the outer wall of the displacement plate, and the second threaded hole matches the second threaded rod.

[0010] As a further solution of the present invention: Ratchet teeth are opened on the inner wall of the toothed ring, and one end of the block is engaged with the ratchet teeth.

[0011] As a further solution of the present invention: The outer wall of the square block fits with the inner wall of the square groove, a first inclined surface is provided at one end of the pressing block located inside the square groove, tooth grooves are opened on the outer walls of the pressing block and the block, and the tooth grooves are meshed with the spur gear.

[0012] As a further solution of the present invention: the inner wall of the sliding groove fits with the outer wall of the sliding rod, and the inner wall of the fixed groove fits with the outer wall of one end of the fixed block.

[0013] As a further solution of the present invention: at the bottom of one end of the fixed block located inside the sliding rod, a second inclined surface is provided, and at the bottom of one end of the fixed block extending out of the sliding rod, a third inclined surface is provided. The lower end of the displacement frame passes through the fixed block and is connected with a cross bar, and the cross bar is in contact with the second inclined surface.

[0014] A method for using a water quality sampler for mobile water quality detection, the specific steps are as follows: Step 1: After the mounting frame is displaced to the designated position, the first motor operates to drive the square block to move to one end of a rotating disk, and then the second motor is started to drive the square block to insert into the square groove. Step 2: Start the third motor to drive the winding roller to rotate. The winding roller releases the support rope to drive the sampling bottle to move downward into the water body. Step 3: When the sampling bottle moves to a depth equal to the preset connecting rope, the sampling hole automatically opens for sampling operation.

[0015] Compared with the prior art, the beneficial effects of the present invention are: By setting a moving mechanism and a sampling mechanism, after the mounting frame is displaced to the designated position, the square block moves to one end of a rotating disk, and the second motor operates to drive the square block to insert into the square groove; start the third motor to drive the winding roller to rotate, the winding roller releases the support rope to drive the sampling bottle to move downward into the water body. When the sampling bottle moves to a certain depth, the sampling hole automatically opens for sampling operation; after sampling is completed, when moving to the next location, when the square block moves to one end of another rotating disk, sampling operation is performed again, which is convenient for sampling water bodies at different positions, and can realize remote control sampling operation through the controller, can realize multi-point and multi-depth sampling, and at the same time does not disrupt the stratification of the water body to be detected, making the sampling result more valuable as a reference and further improving the accuracy of the data. Description of the Drawings

[0016] Figure 1 is the structural schematic diagram of the present invention; Figure 2 is the installation schematic diagram of the movable seat of the present invention; Figure 3 is the installation schematic diagram of the winding roller of the present invention; Figure 4 is the structural schematic diagram of the toothed ring of the present invention; Figure 5 is the internal structural schematic diagram of the rotating disk of the present invention; Figure 6 is the internal structural schematic diagram of the limiting frame of the present invention; Figure 7 Schematic diagram of the internal structure of the sampling bottle of the present invention; Figure 8 Schematic diagram of the structure of the baffle of the present invention; Figure 9 Schematic diagram of the internal structure of the baffle of the present invention; Figure 10 Schematic diagram of the structure of the displacement frame of the present invention.

[0017] In the figure: 1. mounting frame; 2. floating plate; 3. propeller; 4. sampling bottle; 5. moving mechanism; 501. movable groove; 502. movable seat; 503. first motor; 504. first threaded rod; 505. second motor; 506. second threaded rod; 507. displacement plate; 508. third motor; 509. square block; 510. limiting frame; 511. mounting plate; 512. connecting shaft; 513. winding roller; 514. support rope; 515. toothed ring; 516. rotating disk; 517. square groove; 518. clamping block; 519. first spring; 520. spur gear; 521. extrusion block; 6. sampling mechanism; 601. connecting cover; 602. counterweight block; 603. sampling hole; 604. baffle; 605. sliding rod; 606. sliding groove; 607. fixing groove; 608. fixing block; 609. second spring; 610. displacement frame; 611. connecting rope. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The following describes the embodiments according to the overall structure of the present invention.

[0020] Please refer to Figures 1 to 10 , in an embodiment of the present invention, a water quality sampler for mobile water quality detection includes a mounting frame 1 and a sampling bottle 4. A floating plate 2 is fixedly connected to the bottom end of the mounting frame 1. A propeller 3 is installed on the outer wall of the floating plate 2. The sampling bottle 4 is displaced by a moving mechanism 5, and the sampling bottle 4 performs a sampling operation through a sampling mechanism 6.

[0021] The moving mechanism 5 includes a movable groove 501 which is opened at the top end of the mounting frame 1. The inner wall of the movable groove 501 is slidably connected with a movable seat 502. One end of the mounting frame 1 is provided with a first motor 503, and the output end of the first motor 503 is connected with a first threaded rod 504. The first threaded rod 504 penetrates through the movable seat 502. The outer wall of the movable seat 502 is provided with a second motor 505, and the output end of the second motor 505 is connected with a second threaded rod 506. The outer wall of the second threaded rod 506 is slidably connected with a displacement plate 507. The displacement plate 507 is slidably connected to the top end of the movable seat 502. The outer wall of the displacement plate 507 is provided with a third motor 508, and the output end of the third motor 508 is connected with a square block 509. The inner wall of the mounting frame 1 is fixedly connected with a limiting frame 510. The moving mechanism 5 further includes a mounting plate 511 which is symmetrically and fixedly connected to the top end of the mounting frame 1. The outer wall of the mounting plate 511 is rotatably connected with a connecting shaft 512. The outer wall of the connecting shaft 512 is fixedly connected with a winding roller 513. A support rope 514 is mounted on the outer wall of the winding roller 513. The sampling bottle 4 is located at the bottom end of the support rope 514 and inside the limiting frame 510. One end of the connecting shaft 512 is fixedly connected with a rotating disc 516. The outer wall of the mounting plate 511 is fixedly connected with a gear ring 515 outside the rotating disc 516. A square groove 517 is opened at one end of the rotating disc 516. A block 518 extending out of the rotating disc 516 is slidably connected inside the rotating disc 516. A first spring 519 is connected between the block 518 and the rotating disc 516. A spur gear 520 is rotatably connected to the outer wall of the block 518 inside the rotating disc 516. A pressing block 521 is slidably connected to the outer wall of the spur gear 520 inside the rotating disc 516. One end of the pressing block 521 extends into the inner cavity of the square groove 517.

[0022] In this embodiment: The floating plate 2 floats on the water surface. The operation of the propeller 3 drives the displacement of the mounting frame 1. When the mounting frame 1 is displaced to the designated position, the first motor 503 is started. The operation of the first motor 503 drives the rotation of the first threaded rod 504. The rotation of the first threaded rod 504 drives the sliding of the movable seat 502 in the movable groove 501. The displacement of the movable seat 502 drives the square block 509 to move to one end of the rotating disc 516. Then the second motor 505 is started. The operation of the second motor 505 drives the rotation of the second threaded rod 506. The rotation of the second threaded rod 506 drives the displacement of the displacement plate 507. The displacement of the displacement plate 507 drives the square block 509 to be inserted into the square groove 517.

[0023] The square block 509 moves into the square groove 517 and comes into contact with the extrusion block 521, pushing the extrusion block 521 to displace. The displacement of the extrusion block 521 drives the spur gear 520 to rotate. The rotation of the spur gear 520 drives the latch 518 to displace, squeezing the first spring 519. The displacement of the latch 518 separates from the toothed ring 515, canceling the fixation of the rotating disk 516. At this time, the third motor 508 can be started. The operation of the third motor 508 drives the square block 509 to rotate. The rotation of the square block 509 drives the rotating disk 516 to rotate. The rotation of the rotating disk 516 drives the connecting shaft 512 to rotate. The rotation of the connecting shaft 512 drives the winding roller 513 to rotate. The winding roller 513 releases the support rope 514 to drive the sampling bottle 4 to move downward and enter the water body. Through the cooperation of the parts in the sampling mechanism 6, the sampling operation is carried out.

[0024] After the sampling is completed, the third motor 508 operates to drive the winding roller 513 to rotate in the reverse direction, and the sampling bottle 4 is pulled up into the inner cavity of the limit frame 510 through the support rope 514. Then, the second motor 505 operates to drive the square block 509 to displace out of the square groove 517. The latch 518 is engaged with the toothed ring 515 under the elastic force of the first spring 519 to fix the rotating disk 516. When moving to the next location, the first motor 503 operates to drive the square block 509 to move to one end of another rotating disk 516, and the sampling operation is carried out again, facilitating the sampling operation of the water bodies at different positions.

[0025] Please refer particularly to Figures 6 to 10 The sampling mechanism 6 includes a connecting cover 601. The connecting cover 601 is threadedly connected to the top end of the sampling bottle 4. The bottom end of the support rope 514 is fixedly connected to the connecting cover 601. A counterweight block 602 is installed at the bottom end of the sampling bottle 4. A sampling hole 603 is opened at the top end of the connecting cover 601. Slide grooves 606 are opened on both sides of the sampling hole 603 at the top end of the connecting cover 601. Fixed grooves 607 are opened on the inner walls of the slide grooves 606. A slide rod 605 is slidably connected to the inner walls of the slide grooves 606. A baffle 604 is fixedly connected to the top end of the slide rod 605. A fixing block 608 extending out of the slide rod 605 is slidably connected to the inside of the slide rod 605. A second spring 609 is connected between the fixing block 608 and the slide rod 605. A displacement frame 610 is slidably connected to the inside of the baffle 604 and the slide rod 605. The displacement frame 610 penetrates through the fixing block 608. A connecting rope 611 is fixedly connected to the top end of the displacement frame 610. One end of the connecting rope 611 is fixedly connected to the top end of the limit frame 510.

[0026] In this embodiment: The connecting cover 601 is threadedly connected to the top end of the sampling bottle 4. At this time, the fixing block 608 is engaged in the fixed groove 607 under the elastic force of the second spring 609, and the baffle 604 blocks the sampling hole 603.

[0027] When the sampling bottle 4 moves into the water body, the counterweight 602 drives the sampling bottle 4 to move downward under the action of gravity until the connecting rope 611 is tightened. At this time, the counterweight 602 continues to drive the sampling bottle 4 to move downward, so that the connecting rope 611 drives the displacement frame 610 to displace relative to the connecting cover 601. The displacement of the displacement frame 610 pushes the fixed block 608 out of the fixed groove 607, canceling the fixation of the baffle 604. After that, the displacement frame 610 continues to move and pushes the baffle 604 to displace relative to the connecting cover 601, so that the sampling hole 603 is opened, and water enters the sampling bottle 4 through the sampling hole 603 for collection operation; after completion, the support rope 514 drives the sampling bottle 4 to displace out of the water body to complete the sampling operation. This design facilitates the sampling operation after the sampling bottle 4 enters a certain depth, and the sampling depth of the sampling bottle 4 can be controlled by presetting the length of the connecting rope 611.

[0028] Please refer specifically to Figures 1 to 6 , the inner wall of the movable groove 501 fits with the outer wall of the movable seat 502, and the outer wall of the movable seat 502 is provided with a first threaded hole, which matches the first threaded rod 504.

[0029] In this embodiment: Start the first motor 503, the first motor 503 rotates to drive the first threaded rod 504 to rotate, and the rotation of the first threaded rod 504 drives the movable seat 502 to slide in the movable groove 501, and the displacement of the movable seat 502 drives the square block 509 to move to one end of the rotating disk 516.

[0030] Please refer specifically to Figures 1 to 6 , the outer wall of the displacement plate 507 is provided with a second threaded hole, which matches the second threaded rod 506.

[0031] In this embodiment: Start the second motor 505, the second motor 505 rotates to drive the second threaded rod 506 to rotate, and the rotation of the second threaded rod 506 drives the displacement plate 507 to displace, and the displacement of the displacement plate 507 drives the square block 509 to insert into the square groove 517.

[0032] Please refer specifically to Figures 1 to 6 , the inner wall of the gear ring 515 is provided with ratchet teeth, and one end of the block 518 is engaged with the ratchet teeth.

[0033] In this embodiment: The square block 509 displaces out of the square groove 517, and the block 518 is engaged with the gear ring 515 under the elastic force of the first spring 519 to fix the rotating disk 516 and prevent the rotating disk 516 from rotating in the reverse direction.

[0034] Please refer specifically to Figures 1 to 6, the outer wall of the square block 509 fits against the inner wall of the square groove 517. One end of the extrusion block 521 located in the inner cavity of the square groove 517 is provided with a first inclined surface. Tooth grooves are formed on the outer walls of the extrusion block 521 and the latch block 518, and the tooth grooves are engaged with the spur gear 520.

[0035] In this embodiment: The square block 509 moves into the square groove 517 and contacts the extrusion block 521, pushing the extrusion block 521 to displace. The displacement of the extrusion block 521 drives the spur gear 520 to rotate. The rotation of the spur gear 520 drives the latch block 518 to displace, squeezing the first spring 519. The displacement of the latch block 518 separates from the toothed ring 515, canceling the fixation of the rotating disk 516.

[0036] Please refer specifically to Figures 6 to 10 , the inner wall of the sliding groove 606 fits against the outer wall of the sliding rod 605, and the inner wall of the fixing groove 607 fits against one end outer wall of the fixing block 608.

[0037] In this embodiment: The sliding rod 605 can slide within the sliding groove 606. The fixing block 608 is snapped into the fixing groove 607 under the elastic force of the second spring 609 to fix the baffle 604, and the baffle 604 blocks the sampling hole 603.

[0038] Please refer specifically to Figures 6 to 10 , one end bottom of the fixing block 608 located inside the sliding rod 605 is provided with a second inclined surface, one end bottom of the fixing block 608 extending outside the sliding rod 605 is provided with a third inclined surface, and the bottom outer wall of the displacement frame 610 contacts the second inclined surface.

[0039] In this embodiment: The connecting rope 611 drives the displacement frame 610 to displace relative to the connecting cover 601. The displacement of the displacement frame 610 pushes the fixing block 608 out of the fixing groove 607, canceling the fixation of the baffle 604.

[0040] A method for using a mobile water quality sampling instrument for water quality detection, the specific steps are as follows: Step 1: After the mounting frame 1 is displaced to the designated position, the first motor 503 operates to drive the square block 509 to move to one end of a rotating disk 516, and then the second motor 505 is started to drive the square block 509 to insert into the square groove 517; Step 2: Start the third motor 508 to drive the winding roller 513 to rotate. The winding roller 513 releases the support rope 514 to drive the sampling bottle 4 to move downward into the water body; Step 3: When the sampling bottle 4 moves to a depth equal to the preset connecting rope 611, the sampling hole 603 automatically opens for sampling operation.

[0041] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A water quality sampler for mobile water quality detection, comprising a mounting frame (1) and a sampling bottle (4), characterized in that, The bottom end of the mounting frame (1) is fixedly connected to a floating plate (2). A propeller (3) is installed on the outer wall of the floating plate (2). The sampling bottle (4) is displaced by a moving mechanism (5). The sampling bottle (4) performs a sampling operation through a sampling mechanism (6). The moving mechanism (5) includes a movable groove (501). The movable groove (501) is opened at the top end of the mounting frame (1). A movable seat (502) is slidably connected to the inner wall of the movable groove (501). A first motor (503) is installed at one end of the mounting frame (1). The output end of the first motor (503) is connected to a first threaded rod (504). The first threaded rod (504) penetrates through the movable seat (502). A second motor (505) is installed on the outer wall of the movable seat (502). The output end of the second motor (505) is connected to a second threaded rod (506). A displacement plate (507) is slidably connected to the outer wall of the second threaded rod (506). The displacement plate (507) is slidably connected to the top end of the movable seat (502). A third motor (508) is installed on the outer wall of the displacement plate (507). The output end of the third motor (508) is connected to a square block (509). A limiting frame (510) is fixedly connected to the inner wall of the mounting frame (1).

2. The water quality sampler for mobile water quality detection according to claim 1, wherein, The moving mechanism (5) further includes a mounting plate (511). The mounting plate (511) is symmetrically and fixedly connected to the top end of the mounting frame (1). A connecting shaft (512) is rotatably connected to the outer wall of the mounting plate (511). A winding roller (513) is fixedly connected to the outer wall of the connecting shaft (512). A support rope (514) is installed on the outer wall of the winding roller (513). The sampling bottle (4) is located at the bottom end of the support rope (514) and inside the limiting frame (510). One end of the connecting shaft (512) is fixedly connected to a rotating disk (516). A toothed ring (515) is fixedly connected to the outer wall of the mounting plate (511) outside the rotating disk (516). A square groove (517) is opened at one end of the rotating disk (516). A block (518) extending out of the rotating disk (516) is slidably connected inside the rotating disk (516). A first spring (519) is connected between the block (518) and the rotating disk (516). A spur gear (520) is rotatably connected to the outer wall of the block (518) inside the rotating disk (516). An extrusion block (521) is slidably connected to the outer wall of the spur gear (520) inside the rotating disk (516). One end of the extrusion block (521) extends into the inner cavity of the square groove (517).

3. The water quality sampler for mobile water quality detection according to claim 2, characterized in that, The sampling mechanism (6) includes a connecting cover (601). The connecting cover (601) is threadedly connected to the top of the sampling bottle (4). The bottom end of the support rope (514) is fixedly connected to the connecting cover (601). A counterweight (602) is installed at the bottom end of the sampling bottle (4). A sampling hole (603) is provided at the top end of the connecting cover (601). Slide grooves (606) are provided on both sides of the sampling hole (603) at the top end of the connecting cover (601). A fixing groove (607) is provided on the inner wall of the slide groove (606). A slide rod (605) is slidably connected to the inner wall of the slide groove (606). A baffle (604) is fixedly connected to the top end of the slide rod (605). A fixing block (608) extending out of the slide rod (605) is slidably connected inside the slide rod (605). A second spring (609) is connected between the fixing block (608) and the slide rod (605). A displacement frame (610) is slidably connected inside the baffle (604) and the slide rod (605). The displacement frame (610) passes through the fixing block (608). A connecting rope (611) is fixedly connected to the top end of the displacement frame (610). One end of the connecting rope (611) is fixedly connected to the top end of the limiting frame (510).

4. The water quality sampler for mobile water quality detection according to claim 2, characterized in that, The inner wall of the movable groove (501) fits with the outer wall of the movable seat (502). A first threaded hole is provided on the outer wall of the movable seat (502), and the first threaded hole matches the first threaded rod (504).

5. The water quality sampler for mobile water quality detection according to claim 2, wherein, A second threaded hole is provided on the outer wall of the displacement plate (507), and the second threaded hole matches the second threaded rod (506).

6. The water quality sampler for mobile water quality detection according to claim 2, wherein, Ratch teeth are provided on the inner wall of the toothed ring (515), and one end of the clamping block (518) is engaged with the ratch teeth.

7. The water quality sampler for mobile water quality detection according to claim 2, characterized in that, The outer wall of the square block (509) fits with the inner wall of the square groove (517). A first inclined surface is provided at one end of the extrusion block (521) located in the inner cavity of the square groove (517). Tooth grooves are provided on the outer walls of the extrusion block (521) and the clamping block (518), and the tooth grooves are engaged with the spur gear (520).

8. The water quality sampler for mobile water quality detection according to claim 3, characterized in that, The inner wall of the slide groove (606) fits with the outer wall of the slide rod (605). The inner wall of the fixing groove (607) fits with the outer wall of one end of the fixing block (608).

9. The water quality sampler for mobile water quality detection according to claim 3, characterized in that, A second inclined surface is provided at the bottom of one end of the fixing block (608) located inside the slide rod (605), and a third inclined surface is provided at the bottom of the end of the fixing block (608) extending out of the slide rod (605). A cross bar is connected after the lower end of the displacement frame (610) passes through the fixing block (608), and the cross bar is in contact with the second inclined surface.

10. A method for using a water quality sampler for mobile water quality detection according to any one of claims 1-9, characterized in that, The specific steps are as follows: Step 1: After the mounting frame (1) is displaced to the designated position, the first motor (503) operates to drive the square block (509) to move to one end of a rotating disk (516), and then the second motor (505) is started to drive the square block (509) to insert into the square groove (517). Step 2: Start the third motor (508) to drive the winding roller (513) to rotate. The winding roller (513) releases the support rope (514) to drive the sampling bottle (4) to move downward into the water body; Step 3: When the sampling bottle (4) moves to a depth equal to the preset connecting rope (611), the sampling hole (603) automatically opens for sampling operation.

Images