A device and method for detecting water quality under ice

Abstract

The present invention relates to the technical field of water quality detection, and more specifically, to an under-ice water quality detection device and method. The rotating mechanism comprises an ice-breaking unit, a dispersion unit and a sampling unit. The ice-breaking unit comprises an ice-crushing rod, and the dispersion unit comprises an extrusion plate. One side of the extrusion plate surface is connected with an ice-splitting piece. The ice-crushing rod and the extrusion plate are fixedly installed around the lower surface of a rotating disc. The rotating disc is fixedly connected to the lower surface of a rotating sleeve rod. The rotating sleeve rod is rotatably connected to the lower surface of a linkage rod. A rotating gear is fixedly installed around the upper surface of the linkage rod. The accumulated crushed ice is crushed into small pieces. At the same time, the ice-splitting piece can remove the crushed ice to avoid accumulation at the intersection of the drill bit and the rotating disc surface, so that there is no residual crushed ice at the position where the sample needs to be extracted, and the extracted sample is prevented from containing a large amount of crushed ice. The crushed ice contains a large amount of impurities, which affects the accuracy of water quality detection.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to an under-ice water quality detection device and method. Background Art

[0002] When testing water quality, it is often necessary to take samples of the water source to be tested. However, in the cold winter or in the north, due to climatic reasons, a thick layer of ice will form on the water surface. At this time, if the staff needs to take samples, they need to use an ice-breaking device to break the ice.

[0003] Currently, there are existing equipment and methods for underwater water quality testing. The conventional method is to use a drill to break the ice surface and then directly extract samples from the broken ice hole for water quality testing. However, after the ice is broken, there will be a large amount of broken ice around, and the surface of the broken ice will be mixed with a large amount of impurities. As a result, the extracted samples will be affected by the broken ice containing a large amount of impurities after the water quality test, resulting in a significant reduction in the accuracy of water quality testing.

[0004] Therefore, there is an urgent need for an underwater water quality detection device and method to solve the existing technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide an underwater water quality detection device and method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, one of the purposes of the present invention is to provide an under-ice water quality detection device and method, including a base, an ice-breaking mechanism and a rotating mechanism;

[0007] A support rod is fixedly installed above the base, a hydraulic cylinder is fixedly installed on one side above the support rod, a piston rod is installed below the hydraulic cylinder, and a chassis is fixedly installed below the piston rod;

[0008] The ice breaking mechanism includes a driving motor, which is fixedly installed under the chassis, a fixing plate is fixedly installed under the driving motor, a rotating rod is rotatably connected under the fixing plate, a driving shaft is connected under the driving motor, the driving shaft drives the rotating rod to rotate, and a drill bit is fixedly installed under the rotating rod;

[0009] The rotating mechanism includes an ice-breaking unit, a dispersion unit and a sampling unit. The ice-breaking unit includes an ice-breaking rod, and the dispersion unit includes an extrusion plate. An ice-splitting piece is connected to one side of the surface of the extrusion plate. The ice-breaking rod and the extrusion plate are fixedly installed around the lower surface of the rotating disk. The rotating disk is fixedly connected to the lower surface of the rotating sleeve rod. The rotating sleeve rod is rotatably connected to the lower surface of the linkage rod. A rotating gear is fixedly installed around the upper surface of the linkage rod. A transmission belt is meshed on the surface of the rotating gear. Tooth grooves are provided around the lower surface of the rotating rod. The transmission belt rotates on the outer surface of the rotating rod through the tooth grooves, and the linkage rod is driven to rotate through the meshing of the transmission belt and the rotating gear, so that the ice-breaking rod and the ice-splitting piece rotate synchronously on both sides of the drill bit surface. The bottom of the rotating sleeve rod extends to the inner bottom of the rotating disk. The ice-breaking rod and the extrusion plate are installed around the lower surface of the rotating disk. The rotating sleeve rod rotates to drive the ice-breaking rod and the extrusion plate to rotate on the lower surface of the rotating disk, so that the upper surface of the rotating disk remains stationary.

[0010] As a further improvement of the present technical solution, connecting rods are fixedly installed on both sides of the lower surface of the fixed plate, the linkage rod is rotatably connected to the lower surface of the connecting rod, the rotating gear is fixedly installed at the intersection of the connecting rod and the linkage rod, the rotating gear and the transmission belt are parallel and corresponding, and the rotating gear is driven to rotate by the rotation of the transmission belt, and the linkage rod is rotated under the connecting rod, the rotating sleeve rod and the linkage rod are fixedly connected, so that the rotating sleeve rod drives the rotating disc to rotate.

[0011] As a further improvement of the technical solution, the ice crushing rods are arranged in a circular array with the rotating disk as the center, and the ice crushing rods are L-shaped and rotate synchronously with the rotating disk.

[0012] As a further improvement of the technical solution, the squeezing plates and the ice-squeezing pieces are also arranged in a ring array with the rotating disk as the center, and are staggered with the ice-crushing rods.

[0013] As a further improvement of the present technical solution, two groups of ice peels and ice crushing rods are provided, and the two groups of ice peels and ice crushing rods are symmetrically distributed on both sides of the drill bit surface. The drill bit is raised and lowered and adjusted under the support rod by a hydraulic cylinder and a piston rod, and is rotated by a driving motor and a rotating rod. The two groups of ice peels and ice crushing rods are synchronously raised and lowered and rotated on both sides of the drill bit surface through a transmission belt and a rotating gear.

[0014] As a further improvement of the present technical solution, the sampling unit includes a rotating disc, a connecting plate is fixedly connected to one side of the upper surface of the rotating disc, a water inlet hole is opened at the center position of the lower surface of the connecting plate, a water pump is installed at the center position of the upper surface of the connecting plate, a water pipe is connected to one side of the surface of the water pump, and a collecting bucket is connected to one side of the surface of the water pipe.

[0015] As a further improvement of the technical solution, water diversion holes are opened on both sides of the drill bit surface, and water is introduced into the collection bucket through a water pump and a water guide pipe.

[0016] The second object of the present invention is to provide a method for operating an underwater water quality detection device including any one of the above items, comprising the following steps:

[0017] S1. Install the support rod near the water's edge, start the hydraulic cylinder, adjust the piston rod up and down, and lower the ice-breaking mechanism to the ice surface;

[0018] S2. When the ice-breaking mechanism is in vertical contact with the ice surface, the driving motor is started, the driving shaft is used to drive the rotating rod to rotate, and the drill bit is rotated at high speed to break the ice surface;

[0019] S3. After breaking the ice on the ice surface, some ice will accumulate around the drill bit surface, and the teeth grooves around the lower surface of the rotating rod will mesh with the inner wall of the conveyor belt, so that the conveyor belt rotates, and the rotating gear is driven to rotate, so that the rotating sleeve rod drives the lower surface of the rotating disc to rotate, and then the ice crushing rod and the extrusion plate rotate;

[0020] S4. After the drill bit rotates to break the ice on the ice surface, some of the broken ice can spread to the surroundings with the centrifugal force of the drill bit. At the same time, the rotating ice-breaking rod and the extrusion plate can rotate and contact with some of the broken ice to reduce the area of ​​some of the broken ice. The ice-scraping piece set can push the broken ice to the surroundings when the lower surface of the rotating disk rotates, so that there is no accumulation of broken ice at the intersection of the rotating disk and the drill bit. Subsequently, the water under the ice surface is pumped out for water quality testing.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The target is an underwater water quality detection device and method. The drill bit rotates at high speed to break the ice surface. After the drill bit breaks the ice surface, crushed ice will accumulate around it. At this time, the lower surfaces of the rotating disks arranged on both sides of the drill bit rotate, so that the ice crushing rods and the extrusion plates rotate synchronously. The ice crushing rods and the extrusion plates can rotate and contact with the crushed ice accumulated around them, and the accumulated crushed ice is crushed. At the same time, the ice-scraping pieces arranged can push away the crushed ice to avoid accumulation at the intersection of the drill bit and the rotating disk surface, so that there is no crushed ice left at the position where the sample needs to be extracted, and it is avoided that the extracted sample contains a large amount of crushed ice, and the crushed ice contains a large amount of impurities, which affects the accuracy of water quality detection.

[0023] 2. The device and method for detecting water quality under ice use a hydraulic cylinder and a piston rod to adjust the height of the drill bit. When it is in vertical contact with the ice surface, the drive motor is started to drive the rotating rod to rotate, so that the drill bit breaks the ice surface, thereby adjusting the height of the drill bit for ice surfaces of different thicknesses and achieving a better ice-breaking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the base structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the connection structure between the chassis and the drive motor of the present invention;

[0026] Figure 3 It is a schematic diagram of the connection structure of the piston rod, ice-breaking mechanism and rotating mechanism of the present invention;

[0027] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 5 It is a schematic diagram of the connection structure of the rotating rod, tooth groove, transmission belt, rotating gear and rotating disk of the present invention;

[0029] Figure 6 It is a schematic diagram of the connection structure of the drill bit, the rotating disc and the connecting plate of the present invention;

[0030] Figure 7 It is a schematic diagram of the connection structure between the ice crushing rod and the ice scraper of the present invention;

[0031] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0032] The meaning of each number in the figure is:

[0033] 100, base; 101, support rod; 102, hydraulic cylinder; 103, piston rod; 104, chassis;

[0034] 200, ice breaking mechanism; 201, fixed plate; 202, rotating rod; 203, driving motor; 204, drill bit;

[0035] 300, rotating mechanism; 301, connecting rod; 302, conveyor belt; 303, linkage rod; 304, rotating sleeve rod; 305, rotating disc; 306, ice crushing rod; 307, squeezing plate; 308, ice paddle; 309, rotating gear; 310, tooth groove; 311, connecting plate; 312, water diversion hole; 313, water pump; 314, water pipe; 315, collecting bucket. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 8As shown, one of the purposes of this embodiment is to provide an under-ice water quality detection device and method, including a base 100, an ice-breaking mechanism 200 and a rotating mechanism 300;

[0038] A support rod 101 is fixedly installed above the base 100, a hydraulic cylinder 102 is fixedly installed on one side above the support rod 101, a piston rod 103 is installed below the hydraulic cylinder 102, and a chassis 104 is fixedly installed below the piston rod 103;

[0039] The ice breaking mechanism 200 includes a driving motor 203, which is fixedly installed below the chassis 104, a fixed plate 201 is fixedly installed below the driving motor 203, a rotating rod 202 is rotatably connected below the fixed plate 201, a driving shaft is connected below the driving motor 203, the driving shaft drives the rotating rod 202 to rotate, and a drill bit 204 is fixedly installed below the rotating rod 202;

[0040] The rotating mechanism 300 includes an ice-breaking unit, a dispersion unit and a sampling unit. The ice-breaking unit includes an ice-breaking rod 306, and the dispersion unit includes a squeezing plate 307. One side of the squeezing plate 307 is connected to an ice-splitting piece 308. The ice-breaking rod 306 and the squeezing plate 307 are fixedly installed around the lower surface of the rotating disk 305. The rotating disk 305 is fixedly connected to the lower surface of the rotating sleeve rod 304. The rotating sleeve rod 304 is rotatably connected to the lower surface of the linkage rod 303. The upper surface of the linkage rod 303 is fixedly installed with a rotating gear 309. The surface of the rotating gear 309 is meshed with a transmission belt 302. The lower surface of the rotating rod 202 is opened around A tooth groove 310 is provided, and the transmission belt 302 rotates on the outer surface of the rotating rod 202 through the tooth groove 310, and the transmission belt 302 and the rotating gear 309 are engaged to drive the linkage rod 303 to rotate, so that the ice crushing rod 306 and the ice stripper 308 are synchronously rotated on both sides of the surface of the drill bit 204, and the bottom of the rotating sleeve rod 304 extends to the bottom of the inner side of the rotating disk 305, and the ice crushing rod 306 and the extrusion plate 307 are installed around the lower surface of the rotating disk 305. The rotating sleeve rod 304 rotates, driving the ice crushing rod 306 and the extrusion plate 307 to rotate on the lower surface of the rotating disk 305, so that the upper surface of the rotating disk 305 remains stationary;

[0041] It should be noted that: the piston rod 103 is installed inside the support rod 101, the lower surface of the chassis 104 is fixedly connected to the driving motor 203, the ice breaking unit, the dispersion unit and the sampling unit are synchronously lifted and rotated under the support rod 101 through the fixed plate 201 and the drill bit 204, and the ice crushing rod 306, the ice paddle 308 and the drill bit 204 are at the same height;

[0042] By starting the hydraulic cylinder 102, the piston rod 103 is driven to move up and down at the bottom of one side of the support rod 101, and the ice-breaking mechanism 200 is driven to adjust its height as a whole, so that the lower surface of the drill bit 204 is in vertical contact with the ice surface. When the drill bit 204 is in vertical contact with the ice surface, the drive motor 203 is started, and the driving shaft is used to drive the rotating rod 202 to rotate, and the drill bit 204 is rotated at a high speed to break the ice surface. At the same time, the transmission belt 302 is engaged with the tooth groove 310 and rotates on the outer surface of the rotating rod 202, and the inner wall of the transmission belt 302 is engaged with the surface of the rotating gear 309. The rotating gear 309 rotates, driving the linkage rod 303 to rotate. Since the bottom of the linkage rod 303 is fixedly connected to the rotating sleeve rod 304, the bottom of the rotating sleeve rod 304 is fixedly connected to the rotating disk 305, and the bottom of the rotating sleeve rod 304 extends to the bottom of the inner side of the rotating disk 305, the lower surface of the rotating disk 305 is rotated, and the ice-breaking rod 306 and the extrusion plate 307 are installed on the lower surface of the rotating disk 305 and rotate. Therefore, the ice-breaking rod 306 and the extrusion plate 307 can rotate synchronously with the drill bit 204, so that the crushed ice produced after the drill bit 204 breaks the ice surface can be crushed for the second time.

[0043] Therefore, based on the above structure, combined with Figure 3-Figure 5 As shown, the structures of the ice breaking unit and the dispersion unit are further disclosed. Connecting rods 301 are fixedly installed on both sides of the lower surface of the fixed plate 201. The linkage rod 303 is rotatably connected to the lower surface of the connecting rod 301. The rotating gear 309 is fixedly installed at the intersection of the connecting rod 301 and the linkage rod 303. The rotating gear 309 and the transmission belt 302 are parallel and corresponding. The rotating gear 309 is driven to rotate by the rotation of the transmission belt 302, and the linkage rod 303 is rotated under the connecting rod 301. The rotating sleeve rod 304 is fixedly connected to the linkage rod 303, so that the rotating sleeve rod 304 drives the rotating disc 305 to rotate;

[0044] Furthermore, two groups of ice-stripping pieces 308 and ice-crushing rods 306 are provided, and the two groups of ice-stripping pieces 308 and ice-crushing rods 306 are symmetrically distributed on both sides of the surface of the drill bit 204. The drill bit 204 is raised and lowered and adjusted under the support rod 101 by the hydraulic cylinder 102 and the piston rod 103, and is rotated by the driving motor 203 and the rotating rod 202. The two groups of ice-stripping pieces 308 and ice-crushing rods 306 are synchronously raised and lowered and rotated on both sides of the surface of the drill bit 204 through the transmission belt 302 and the rotating gear 309. After the ice surface of the drill bit 204 is broken, the crushed ice generated is secondary crushed and dispersed to ensure that when the water quality sample is extracted, no crushed ice is mixed in the water quality sample, thereby improving the accuracy of water quality detection.

[0045] Therefore, based on the above structure, combined with Figure 6-Figure 8As shown, the structure of the sampling unit is further disclosed. The sampling unit includes a rotating disc 305. A connecting plate 311 is fixedly connected to one side of the upper surface of the rotating disc 305. A water diversion hole 312 is opened at the center of the lower surface of the connecting plate 311. A water pump 313 is installed at the center of the upper surface of the connecting plate 311. A water guide pipe 314 is connected to one side of the surface of the water pump 313. A collection bucket 315 is connected to one side of the surface of the water guide pipe 314.

[0046] Furthermore, after the crushed ice produced by the drill bit 204 after breaking the ice is crushed for a second time by the ice crushing rod 306 and the squeezing plate 307, and the crushed ice after the second crushing is pushed away from the intersection of the rotating disc 305 and the drill bit 204 by the ice-pushing piece 308, the drill bit 204 and the rotating disc 305 continue to descend through the piston rod 103, so that the water diversion hole 312 penetrates into the water, and the water pump 313 is started to extract part of the water through the water guide pipe 314 and pump it into the collection bucket 315, so as to facilitate the subsequent water quality detection of the sample, and effectively avoid a small amount of crushed ice being mixed in the water during the extraction of part of the water, which affects the accuracy of the water quality detection;

[0047] It should be noted that: the water inlet hole 312 is opened on the upper surface of the ice-squeezing piece 308. After the ice-crushing rod 306 and the squeezing plate 307 crush the ice for the second time, the ice-squeezing piece 308 pushes the crushed ice away from the intersection of the rotating disk 305 and the drill bit 204, and then extends the water inlet hole 312 into the water to extract samples and test the water quality.

[0048] The second purpose of this embodiment is to provide a method for operating an underwater water quality detection device including any one of the above items, comprising the following steps:

[0049] S1. The base 100 installs the support rod 101 near the water, starts the hydraulic cylinder 102, and adjusts the piston rod 103 to lower the ice-breaking mechanism 200 to the ice surface;

[0050] S2. When the ice-breaking mechanism 200 is in vertical contact with the ice surface, the driving motor 203 is started, the driving shaft is used to drive the rotating rod 202 to rotate, and the drill bit 204 is rotated at a high speed to break the ice surface;

[0051] S3. After breaking the ice on the ice surface, some ice will accumulate around the surface of the drill bit 204. The tooth grooves 310 around the lower surface of the rotating rod 202 are meshed with the inner wall of the conveyor belt 302, so that the conveyor belt 302 rotates, and drives the rotating gear 309 to rotate, so that the rotating sleeve rod 304 drives the lower surface of the rotating disc 305 to rotate, and then the ice crushing rod 306 and the extrusion plate 307 rotate;

[0052] S4. After the drill bit 204 rotates to break the ice on the ice surface, part of the broken ice can be spread around with the centrifugal force of the drill bit 204. At the same time, the rotating ice-breaking rod 306 and the squeezing plate 307 can rotate and contact with part of the broken ice, so that the area of ​​the part of the broken ice is reduced. The ice-squeezing piece 308 can push the broken ice around when the lower surface of the rotating disk 305 rotates, so that no broken ice is accumulated at the intersection of the rotating disk 305 and the drill bit 204.

[0053] S5, the drill bit 204 rotates at high speed to break the ice surface. After the drill bit 204 breaks the ice surface, crushed ice will accumulate around it. At this time, the lower surfaces of the rotating disks 305 arranged on both sides of the drill bit 204 rotate, so that the ice-breaking rods 306 and the squeezing plates 307 rotate synchronously. The ice-breaking rods 306 and the squeezing plates 307 can rotate and contact with the crushed ice accumulated around them, and the accumulated crushed ice is crushed. At the same time, the ice-scraping pieces 308 arranged can push away the crushed ice to avoid accumulation at the intersection of the drill bit 204 and the rotating disk 305 surfaces, so that there is no crushed ice left at the position where the sample needs to be extracted, and it is avoided that the extracted sample contains a large amount of crushed ice, and the crushed ice contains a large amount of impurities, which affects the accuracy of water quality detection.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for detecting water quality under ice, characterized in that: It comprises a base (100), an ice-breaking mechanism (200) and a rotating mechanism (300); A support rod (101) is fixedly mounted above the base (100), a hydraulic cylinder (102) is fixedly mounted on one side above the support rod (101), a piston rod (103) is mounted below the hydraulic cylinder (102), and a chassis (104) is fixedly mounted below the piston rod (103); The ice-breaking mechanism (200) comprises a driving motor (203), the driving motor (203) is fixedly mounted below the chassis (104), a fixing plate (201) is fixedly mounted below the driving motor (203), a rotating rod (202) is rotatably connected below the fixing plate (201), a driving shaft is connected below the driving motor (203), the driving shaft drives the rotating rod (202) to rotate, and a drill bit (204) is fixedly mounted below the rotating rod (202); The rotating mechanism (300) comprises an ice-breaking unit, a dispersion unit and a sampling unit. The ice-breaking unit comprises an ice-breaking rod (306). The dispersion unit comprises an extrusion plate (307). One side of the surface of the extrusion plate (307) is connected to an ice-splitting piece (308). The ice-breaking rod (306) and the extrusion plate (307) are fixedly installed around the lower surface of a rotating disk (305). The rotating disk (305) is fixedly connected to the lower surface of a rotating sleeve rod (304). The rotating sleeve rod (304) is rotatably connected to the lower surface of a linkage rod (303). A rotating gear (309) is fixedly installed around the upper surface of the linkage rod (303). The surface of the rotating gear (309) is meshed with a transmission belt (302). The lower surface of the rotating rod (202) is fixedly mounted around the lower surface of the rotating disk (305). A tooth groove (310) is provided around the rotating rod (202). The transmission belt (302) rotates on the outer surface of the rotating rod (202) through the tooth groove (310), and the transmission belt (302) and the rotating gear (309) are meshed to drive the linkage rod (303) to rotate, so that the ice crushing rod (306) and the ice stripper (308) rotate synchronously on both sides of the surface of the drill bit (204). The bottom of the rotating sleeve rod (304) extends to the bottom of the inner side of the rotating disk (305). The ice crushing rod (306) and the extrusion plate (307) are installed around the lower surface of the rotating disk (305). The rotating sleeve rod (304) rotates to drive the ice crushing rod (306) and the extrusion plate (307) to rotate on the lower surface of the rotating disk (305), so that the upper surface of the rotating disk (305) remains stationary.

2. The underwater water quality detection device according to claim 1 is characterized in that: Connecting rods (301) are fixedly installed on both sides of the lower surface of the fixed plate (201); the linkage rod (303) is rotatably connected to the lower surface of the connecting rod (301); the rotating gear (309) is fixedly installed at the intersection of the connecting rod (301) and the linkage rod (303); the rotating gear (309) and the transmission belt (302) are parallel and corresponding; the rotating gear (309) is driven to rotate by the rotation of the transmission belt (302), and the linkage rod (303) is rotated under the connecting rod (301); the rotating sleeve rod (304) and the linkage rod (303) are fixedly connected, so that the rotating sleeve rod (304) drives the rotating disk (305) to rotate.

3. The underwater water quality detection device according to claim 2 is characterized in that: The ice-crushing rods (306) are arranged in a circular array with the rotating disk (305) as the center. The ice-crushing rods (306) are L-shaped and rotate synchronously with the rotating disk (305).

4. The underwater water quality detection device according to claim 3 is characterized in that: The squeezing plates (307) and ice scrapers (308) are also arranged in a circular array with the rotating disk (305) as the center, and are staggered with the ice crushing rods (306).

5. The underwater water quality detection device according to claim 4 is characterized in that: The ice-sliding blades (308) and ice-crushing rods (306) are provided with two groups in total. The two groups of ice-sliding blades (308) and ice-crushing rods (306) are symmetrically distributed on both sides of the surface of the drill bit (204). The drill bit (204) is raised and lowered and adjusted below the support rod (101) by means of a hydraulic cylinder (102) and a piston rod (103), and is rotated by means of a driving motor (203) and a rotating rod (202). The two groups of ice-sliding blades (308) and ice-crushing rods (306) are synchronously raised and lowered and rotated and adjusted on both sides of the surface of the drill bit (204) by means of a transmission belt (302) and a rotating gear (309).

6. The underwater water quality detection device according to claim 3 is characterized in that: The sampling unit comprises a rotating disc (305), a connecting plate (311) is fixedly connected to one side of the upper surface of the rotating disc (305), a water inlet hole (312) is provided at the center position of the lower surface of the connecting plate (311), a water pump (313) is installed at the center position of the upper surface of the connecting plate (311), a water pipe (314) is connected to one side of the surface of the water pump (313), and a collection bucket (315) is connected to one side of the surface of the water pipe (314).

7. The underwater water quality detection device according to claim 6 is characterized in that: The water inlet holes (312) are provided on both sides of the surface of the drill bit (204), and water is introduced into the interior of the collection bucket (315) through a water pump (313) and a water guide pipe (314).

8. A method for operating the underwater water quality detection device according to claim 1, characterized in that: The steps include: S1. The base (100) installs the support rod (101) at a position close to the water, starts the hydraulic cylinder (102), and adjusts the piston rod (103) to move up and down, so that the ice-breaking mechanism (200) is lowered to the ice surface as a whole; S2, when the ice-breaking mechanism (200) is in vertical contact with the ice surface, the driving motor (203) is started, the driving shaft is used to drive the rotating rod (202) to rotate, and the drill bit (204) is rotated at a high speed to break the ice surface; S3, after the ice on the ice surface is broken, some of the ice will accumulate around the surface of the drill bit (204), and the tooth grooves (310) provided around the lower surface of the rotating rod (202) and the inner wall of the transmission belt (302) are meshed, so that the transmission belt (302) rotates, and drives the rotating gear (309) to rotate, so that the rotating sleeve rod (304) drives the lower surface of the rotating disc (305) to rotate, and then the ice crushing rod (306) and the extrusion plate (307) rotate; S4. After the drill bit (204) rotates to break the ice on the ice surface, part of the broken ice can be spread to the surroundings due to the centrifugal force of the drill bit (204). At the same time, the rotating ice-breaking rod (306) and the squeezing plate (307) can rotate and contact with part of the broken ice, so that the area of ​​the part of the broken ice is reduced. The ice-squeezing piece (308) can push the broken ice to the surroundings when the lower surface of the rotating disk (305) rotates, so that no broken ice is accumulated at the intersection of the rotating disk (305) and the drill bit (204). Subsequently, the water under the ice surface is pumped out to perform water quality testing.

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