An unmanned inspection boat for sampling water quality at a sewage outlet into a river

Abstract

The invention relates to the field of water quality sampling equipment, and discloses an unmanned inspection boat for sampling water quality at a sewage outlet into a river, comprising a hull and a suction component arranged in the hull; the unmanned inspection boat also comprises: a sampling bottle base, fixedly arranged in the hull; a plurality of sampling bottles, inserted and connected to the sampling bottle base in a linear array; a plurality of limiting holes for placing the sampling bottles are opened on the sampling bottle base; a plurality of limiting components, corresponding to the limiting holes one by one; used for limiting the sampling bottles; by placing the sampling bottles into the limiting holes of the sampling bottle base, the corresponding sampling bottles are limited by the limiting components, so as to prevent the sampling bottles from tipping over and causing the sample to flow out when the unmanned boat is shaken, and the sampling bottles are in a sealed state, so that the samples in the sampling bottles will not spill out and contaminate other samples, nor will they be contaminated, resulting in inaccurate detection results, and also avoid the reduction of the sample amount in the sampling bottles during shaking.

Description

Technical Field

[0001] The invention relates to the field of water quality sampling equipment, and in particular to an unmanned inspection boat for sampling water quality at a sewage outlet into a river. Background Art

[0002] With the rapid development of industrial level, environmental pollution problems are becoming increasingly serious, especially water pollution, which has received widespread attention. At present, industrial wastewater needs to be treated and can only be discharged into rivers after meeting the discharge standards. In order to supervise the wastewater discharge of each factory, it is necessary to regularly sample the water quality of the wastewater discharged into the river by each factory.

[0003] Chinese patent application CN202210491475.X discloses an unmanned boat device for automatic sampling of water quality, which comprises a driving device arranged on the bottom side wall of the hull, a lifting device arranged on the bottom of the hull, a placement plate arranged at the output end of the lifting device, and a distance detection device arranged above the placement plate; a suction device is arranged on the hull, the water suction end of the suction device is fixed on the placement plate, and a plurality of sampling bottles are placed in the hull; the distance between the water suction end on the placement plate and the bottom of the boat is controlled by the distance detection device and the lifting device, and then water is pumped into the sampling bottle by the water suction end of the suction device.

[0004] However, when the unmanned boat puts the sampled water into the sampling bottle, the boat will shake during the process of sailing to the next sampling point. Since the upper end of the sampling bottle is open, the river water in the sampling bottle will spill out or the sampling bottle will tip over and contaminate other sampling bottles. When the river water from the next sampling point is filled into another sampling bottle, the river water sample will be contaminated, resulting in inaccurate final test results. Summary of the invention

[0005] The purpose of the present invention is to provide an unmanned inspection boat for sampling water quality at a sewage outlet into a river, so as to solve the following technical problems:

[0006] How to prevent the vessel from shaking during travel, causing the sampling bottle to tip over or the river water in the sampling bottle to spill out.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] An unmanned inspection boat for sampling water quality at a sewage outlet into a river, comprising a hull and a suction assembly arranged in the hull;

[0009] The inspection unmanned ship also includes:

[0010] A sampling bottle base is fixedly arranged in the hull;

[0011] A plurality of sampling bottles are inserted and connected to the sampling bottle base in a linear array; the sampling bottle base is provided with a plurality of limiting holes for placing the sampling bottles;

[0012] A plurality of limit assemblies correspond to the limit holes one by one and are used for limiting the sampling bottles.

[0013] As a further solution of the present invention: the sampling bottle includes a bottle body;

[0014] A water inlet pipe is horizontally arranged on one side of the upper end of the bottle body;

[0015] A slider, slidably arranged in the water inlet pipe;

[0016] A limiting ring, fixedly arranged at an end of the slider away from the bottle body;

[0017] A first spring, arranged between the limiting ring and the slider;

[0018] A water inlet channel is provided in the slider;

[0019] The air inlet channel is provided in the slider; one end of the water inlet channel close to the limit ring is horizontally arranged; the other end of the water inlet channel is vertically arranged; the water inlet channel and the air inlet channel are arranged in parallel; the other end of the air inlet channel is located on the other end of the water inlet channel close to the bottle body;

[0020] The water guide pipe is fixedly arranged on the limiting ring, and one end of the water guide pipe is slidably connected to one end of the water inlet channel close to the limiting ring, and the other end of the water guide pipe and the water inlet channel are connected to the suction component.

[0021] As a further solution of the present invention: the suction assembly includes a water pump arranged in the hull, a water pipe connected to the water pump and a connecting pipe connected to the water pipe; the connecting pipe is located above the water guide pipe;

[0022] A cylinder is arranged above the connecting pipe, and an output end of the cylinder is fixedly connected to the connecting pipe;

[0023] A moving assembly is arranged on the sampling bottle base; the moving assembly is used to drive the cylinder to move along the arrangement direction of the sampling bottles.

[0024] As a further solution of the present invention: the mobile component comprises:

[0025] Two fixing plates are fixedly arranged on the sampling bottle base;

[0026] A screw rod is rotatably disposed between the two fixing plates and is located above the water pipe;

[0027] A moving block is arranged on the screw rod and cooperates with the screw rod thread;

[0028] Two guide rods are fixedly arranged between the two fixed plates and respectively penetrate the moving blocks;

[0029] The motor is fixedly arranged on one of the fixing plates, and the output end of the motor is fixedly connected to the screw rod.

[0030] As a further solution of the present invention: a bridge is fixedly provided on one side of the two fixed plates; a drag chain is provided in the bridge; one end of the water pipe connected to the connecting pipe is fixedly provided in the drag chain; one end of the drag chain close to the connecting pipe is fixedly connected to the output end of the cylinder; the other end of the drag chain is fixedly connected to the bridge.

[0031] As a further solution of the present invention: two limiting bars are fixedly provided at the lower end of the bottle body; limiting grooves for inserting and connecting with the limiting bars are provided on both sides of the limiting hole.

[0032] As a further solution of the present invention: the limit assembly includes:

[0033] Two first grooves are formed on the sampling bottle base and are located on both sides of the limiting hole and are connected to the limiting hole;

[0034] A limiting block, slidably disposed at one end of the first groove close to the limiting hole;

[0035] a second spring disposed in the first groove;

[0036] Two second grooves are arranged on the side wall of the bottle body and correspond to the first grooves one by one; the second grooves are communicated with the first grooves.

[0037] As a further solution of the present invention: one end of the second spring is fixedly connected to a side wall of the first groove away from the limiting hole, and one end of the second spring is fixedly connected to the limiting block.

[0038] Beneficial effects of the present invention:

[0039] (1) The present invention places the sampling bottle into the limiting hole of the sampling bottle base and limits the corresponding sampling bottle through the limiting component to prevent the sampling bottle from tipping over and causing the sample to flow out when the unmanned ship is shaken. The sampling bottle is in a sealed state, and the sample in the sampling bottle will not spill out and contaminate other samples, nor will it be contaminated to cause inaccurate detection results. It also avoids the reduction of the sample amount in the sampling bottle during shaking;

[0040] (2) When the suction component is started, the present invention guides water into the water pipe, and the liquid in the water pipe flows to the water inlet channel. As the number of water pipes increases, pressure is generated on the slider, causing the slider to move along the water inlet pipe toward the bottle body, and the first spring is stretched; the end of the air inlet channel away from the limiting ring first enters the bottle body, so that the bottle body is connected to the outside, and the air in the bottle body is discharged, so that the pressure in the bottle body is the same as the atmospheric pressure; the slider continues to move toward the bottle body, and then the water inlet channel enters the bottle body, and the water in the water inlet channel enters the bottle body. After the external controller starts the suction component for a certain period of time, the suction component is turned off, and the pressure generated by the water in the water inlet channel on the slider is reduced. Under the action of the first spring, the slider moves toward the limiting ring, and the ends of the water inlet channel and the air inlet channel away from the limiting ring return to the water inlet pipe, so that the bottle body remains sealed; when the hull shakes, the remaining water in the water pipe will flow out, and the sample in the bottle body will not flow out, and will not be contaminated by samples in other sampling bottles, resulting in inaccurate detection results;

[0041] (3) The present invention inserts and connects the limiting strip into the limiting groove, so that the bottle body cannot rotate in the limiting hole, thereby ensuring that after the sampling bottle is inserted into the limiting hole, the position of the water pipe remains unchanged, and the connecting pipe can be smoothly connected to the water pipe during sampling;

[0042] (4) The lower end cross-section of the limit strip of the present invention is arc-shaped; the upper end cross-section of the limit block is arc-shaped; when the bottle body is placed in the limit hole, the bottom of the limit strip is aligned with the upper end of the limit block, and the staff moves the bottle body downward, and the bottom of the limit strip gradually squeezes the upper end of the limit block toward both sides of the limit hole, so that the second spring is compressed; the limit strip smoothly enters the limit groove, and when the bottom of the bottle body contacts the bottom of the limit hole, the second groove is at the same height as the first groove, and the second spring causes the limit block to enter the second groove, so that the bottle body cannot move in the vertical direction; preventing the sampling bottle from falling out of the sampling bottle base when the hull shakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described below in conjunction with the accompanying drawings.

[0044] Figure 1 A schematic diagram of the main structure of an embodiment of the present invention;

[0045] Figure 2 A partial structural schematic diagram of an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the structure of a sampling bottle base according to an embodiment of the present invention;

[0047] Figure 4 for Figure 3 A local enlarged view of point A;

[0048] Figure 5This is a schematic diagram of the structure of a sampling bottle according to an embodiment of the present invention;

[0049] Figure 6 This is a cross-sectional view of the sampling bottle structure according to an embodiment of the present invention.

[0050] Description of the drawings: 1. Hull; 2. Suction assembly; 21. Water pump; 22. Water pipe; 23. Connecting pipe; 3. Sampling bottle base; 4. Sampling bottle; 41. Bottle body; 42. Water inlet pipe; 43. Slider; 44. Limiting ring; 45. First spring; 46. Water inlet channel; 47. Air inlet channel; 48. Water guide pipe; 5. Limiting hole; 6. Limiting assembly; 61. First groove; 62. Limiting block; 63. Second spring; 64. Second groove; 7. Cylinder; 8. Moving assembly; 81. Fixed plate; 82. Screw rod; 83. Moving block; 84. Guide rod; 85. Motor; 9. Bridge; 10. Drag chain; 11. Limiting strip; 12. Limiting groove. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of 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.

[0052] See also Figure 1 and Figure 3 As shown, in one embodiment, an unmanned inspection boat for sampling water quality at a sewage outlet into a river is provided, comprising a hull 1 and a suction assembly 2 disposed in the hull 1;

[0053] The inspection unmanned ship also includes:

[0054] A sampling bottle base 3 is fixedly arranged in the hull 1;

[0055] A plurality of sampling bottles 4 are inserted and connected to the sampling bottle base 3 in a linear array; the sampling bottle base 3 is provided with a plurality of limiting holes 5 for placing the sampling bottles 4;

[0056] A plurality of limiting components 6, corresponding one to one with the limiting holes 5, are used to limit the sampling bottle 4;

[0057] Through the above technical scheme, this embodiment places the sampling bottle 4 into the limiting hole 5 of the sampling bottle base 3, and limits the corresponding sampling bottle 4 through the limiting component 6 to prevent the sampling bottle 4 from tipping over and causing the sample to flow out when the unmanned boat is shaking. The sampling bottle 4 is in a sealed state and will not be contaminated by samples in other sampling bottles 4, resulting in inaccurate detection results.

[0058] As an embodiment of the present invention, please refer to Figure 5 and Figure 6 As shown, the sampling bottle 4 includes a bottle body 41;

[0059] A water inlet pipe 42 is horizontally arranged on one side of the upper end of the bottle body 41;

[0060] A slider 43 is slidably disposed in the water inlet pipe 42;

[0061] A limiting ring 44 is fixedly disposed at an end of the slider 43 away from the bottle body 41;

[0062] A first spring 45 is disposed between the limiting ring 44 and the slider 43;

[0063] A water inlet channel 46 is provided in the slider 43;

[0064] The air inlet channel 47 is provided in the slider 43; one end of the water inlet channel 46 close to the limiting ring 44 is horizontally arranged; the other end of the water inlet channel 46 is vertically arranged; the water inlet channel 46 and the air inlet channel 47 are arranged in parallel; the other end of the air inlet channel 47 is located at the other end of the water inlet channel 46 close to the bottle body 41;

[0065] The water guide pipe 48 is fixedly arranged on the limiting ring 44, and one end of the water guide pipe 48 is slidably connected to one end of the water inlet channel 46 close to the limiting ring 44, and the other end of the water guide pipe 48 and the water inlet channel 46 are connected to the suction assembly 2;

[0066] Through the above technical scheme, this embodiment is connected to the external controller through the suction component 2; when the external controller does not start the suction component 2, the slider 43 is completely located in the water inlet pipe 42; the water inlet pipe 42 is not connected to the bottle body 41; when the suction component 2 is started, the suction component 2 guides water into the water guide pipe 48, and the liquid in the water guide pipe 48 flows to the water inlet channel 46. As the liquid in the water guide pipe 48 gradually increases, pressure is generated on the slider 43, causing the slider 43 to move along the water inlet pipe 42 toward the bottle body 41, and the first spring 45 is stretched; the end of the air inlet channel 47 away from the limit ring 44 first enters the bottle body 41, so that the bottle body 41 is connected to the outside, and the air in the bottle body 41 is discharged, so that the pressure in the bottle body 41 is the same as the atmospheric pressure; it is convenient to slide The block 43 continues to move toward the bottle body 41, and then the water inlet channel 46 enters the bottle body 41, and the water in the water inlet channel 46 enters the bottle body 41. After the external controller starts the suction assembly 2 for a certain period of time, the suction assembly 2 is turned off, and the pressure exerted by the water in the water inlet channel 46 on the slider 43 is reduced. Under the action of the first spring 45, the slider 43 moves toward the limit ring 44, and the water inlet channel 46 and the air inlet channel 47 away from the limit ring 44 are returned to the water inlet pipe 42, so that the bottle body 41 remains sealed; when the hull 1 shakes, the remaining water in the water guide pipe 48 will flow out, and the sample in the sampling bottle 4 will not spill out to pollute other samples, nor will it be polluted, resulting in inaccurate detection results, and it also avoids the reduction of the sample amount in the sampling bottle 4 during shaking.

[0067] As an embodiment of the present invention, please refer to Figure 2 and Figure 3 As shown, the suction assembly 2 includes a water pump 21 disposed in the hull 1, a water pipe 22 connected to the water pump 21, and a connecting pipe 23 connected to the water pipe 22; the connecting pipe 23 is located above the water guide pipe 48;

[0068] A cylinder 7 is disposed above the connecting pipe 23, and an output end of the cylinder 7 is fixedly connected to the connecting pipe 23;

[0069] The sampling bottle base 3 is provided with a moving assembly 8; the moving assembly 8 is used to drive the cylinder 7 to move along the arrangement direction of the sampling bottle 4;

[0070] Through the above technical scheme, this embodiment is connected to the external controller through the water pump 21, the moving component 8 and the cylinder 7 respectively; when sampling is required, the external controller starts the moving component 8 to drive the connecting tube 23 to move to the top of one of the empty sampling bottles 4, starts the cylinder 7, and the output end of the cylinder 7 drives the connecting tube 23 to move downward, and the lower end of the connecting tube 23 is inserted into the water pipe 48, and then the water pump 21 is started to allow water to enter the bottle body 41 through the water pipe 22, the connecting tube 23, and the water pipe 48; the water pump 21 is turned off after the specified time, and the output end of the cylinder 7 drives the connecting tube 23 to move upward, separates the connecting tube 23 from the water pipe 48, and sampling can be carried out at the next location.

[0071] As an embodiment of the present invention, please refer to Figure 2 and Figure 3 As shown, the moving component 8 includes:

[0072] Two fixing plates 81, fixedly arranged on the sampling bottle base 3;

[0073] The screw rod 82 is rotatably disposed between the two fixing plates 81 and is located above the water pipe 48;

[0074] The moving block 83 is arranged on the screw rod 82 and is threadably matched with the screw rod 82;

[0075] Two guide rods 84 are fixedly disposed between the two fixed plates 81 and respectively penetrate the moving blocks 83;

[0076] A motor 85 is fixedly disposed on one of the fixing plates 81, and an output end of the motor 85 is fixedly connected to the screw rod 82;

[0077] Through the above technical solution, this embodiment starts the motor 85, and the output end of the motor 85 drives the screw rod 82 to rotate, so that the moving block 83 moves on the screw rod 82 along the guide rod 84, thereby driving the cylinder 7 to move above the water pipe 48.

[0078] As an embodiment of the present invention, please refer to Figure 1-Figure 3 As shown, a bridge frame 9 is fixedly arranged on one side of the two fixing plates 81; a drag chain 10 is arranged in the bridge frame 9; one end of the water pipe 22 connected with the connecting pipe 23 is fixedly arranged in the drag chain 10; one end of the drag chain 10 close to the connecting pipe 23 is fixedly connected to the output end of the cylinder 7; the other end of the drag chain 10 is fixedly connected to the bridge frame 9;

[0079] Through the above technical solution, this embodiment fixes the water pipe 22 in the drag chain 10 so that the water pipe 22 moves with the drag chain when moving, thereby limiting the movement trajectory of the water pipe 22 and preventing the water pipe 22 from bending when moving, resulting in poor water flow. The bridge frame 9 is used to support the drag chain 10.

[0080] As an embodiment of the present invention, please refer to Figure 3 and Figure 5 As shown, two limiting strips 11 are fixedly provided at the lower end of the bottle body 41; limiting grooves 12 are provided on both sides of the limiting hole 5 to be inserted and connected with the limiting strips 11;

[0081] Through the above technical solution, the embodiment of the present invention inserts the limiting strip 11 into the limiting groove 12, so that the bottle body 41 cannot rotate in the limiting hole 5, thereby ensuring that after the sampling bottle 4 is inserted into the limiting hole 5, the position of the water pipe 48 remains unchanged, and the connecting pipe 23 can be smoothly connected to the water pipe 48 during sampling;

[0082] As an embodiment of the present invention, please refer to Figure 2-Figure 5 As shown, the limiting component 6 includes:

[0083] Two first grooves 61 are formed on the sampling bottle base 3 and are located on both sides of the limiting hole 5 and communicated with the limiting hole 5;

[0084] A limiting block 62, slidably disposed at one end of the first groove 61 close to the limiting hole 5;

[0085] A second spring 63 is disposed in the first groove 61; one end of the second spring 63 is fixedly connected to a side wall of the first groove 61 away from the limiting hole 5, and one end of the second spring 63 is fixedly connected to the limiting block 62;

[0086] Two second grooves 64 are formed on the side wall of the bottle body 41 and correspond to the first grooves 61 one by one; the second grooves 64 are connected to the first grooves 61;

[0087] Through the above technical scheme, the lower end cross-section of the limit strip 11 described in this embodiment is arc-shaped; the upper end cross-section of the limit block 62 is arc-shaped; when the bottle body 41 is placed in the limit hole 5, the bottom of the limit strip 11 is aligned with the upper end of the limit block 62, and the staff moves the bottle body 41 downward, and the bottom of the limit strip 11 gradually squeezes the upper end of the limit block 62 toward the two sides of the limit hole 5, so that the second spring 63 is compressed; the limit strip 11 smoothly enters the limit groove 12, and when the bottom of the bottle body 41 contacts the bottom of the limit hole 5, the second groove 64 is at the same height as the first groove 61, and the second spring 63 causes the limit block 62 to enter the second groove 64, so that the bottle body 41 cannot move in the vertical direction; preventing the sampling bottle 4 from falling out of the sampling bottle base 3 when the hull shakes.

[0088] Working principle of the present invention:

[0089] Before work, when the staff puts the bottle body 41 of the sampling bottle 4 into the limiting hole 5, the bottom of the limiting strip 11 is aligned with the upper end of the limiting block 62. The staff moves the bottle body 41 downward, and the bottom of the limiting strip 11 gradually presses the upper end of the limiting block 62 toward both sides of the limiting hole 5, so that the second spring 63 is compressed; the limiting strip 11 smoothly enters the limiting groove 12, and when the bottom of the bottle body 41 contacts the bottom of the limiting hole 5, the second groove 64 is at the same height as the first groove 61. When the sampling bottle 4 is in the state of being moved, the second spring 63 makes the limiting block 62 enter the second groove 64, so that the bottle body 41 cannot move in the vertical direction; to prevent the sampling bottle 4 from falling out of the sampling bottle base 3 when the hull shakes, the limiting strip 11 is inserted and connected in the limiting groove 12, so that the bottle body 41 cannot rotate in the limiting hole 5, and ensures that after the sampling bottle 4 is inserted into the limiting hole 5, the position of the water pipe 48 remains unchanged, so that the connecting pipe 23 can be smoothly connected with the water pipe 48 when sampling;

[0090] During operation, when the unmanned boat travels to the designated sampling point, the external controller starts the motor 85, and the output end of the motor 85 drives the screw 82 to rotate, so that the moving block 83 moves on the screw 82 along the guide rod 84, and the moving block 83 drives the connecting pipe 23 to move to the top of one of the empty sampling bottles 4 through the cylinder 7, and the cylinder 7 is started, and the output end of the cylinder 7 drives the connecting pipe 23 to move downward, and the lower end of the connecting pipe 23 is inserted into the water guide pipe 48, and then the water pump 21 is started, and the water pump 21 guides the water at the bottom of the river. The liquid in the water pipe 48 flows into the water inlet channel 46. As the liquid in the water pipe 48 flows into the water inlet channel 46, pressure is generated on the slider 43, so that the slider 43 moves along the water inlet pipe 42 toward the bottle body 41, and the first spring 45 is stretched; the end of the air inlet channel 47 away from the limit ring 44 first enters the bottle body 41, so that the bottle body 41 is connected to the outside, and the air in the bottle body 41 is discharged, so that the pressure in the bottle body 41 is the same as the atmospheric pressure; it is convenient for the slider 43 to continue to move toward the bottle body 41 1, and then the water inlet channel 46 enters the bottle body 41, and the water in the water inlet channel 46 enters the bottle body 41. After the external controller starts the water pump 21 for a certain period of time, the water pump 21 is turned off, and the liquid no longer flows into the water inlet channel 46. The pressure exerted by the water in the water inlet channel 46 on the slider 43 is reduced. Under the action of the first spring 45, the slider 43 moves toward the limit ring 44, and the ends of the water inlet channel 46 and the air inlet channel 47 away from the limit ring 44 return to the water inlet pipe 42, so that the bottle body 41 remains sealed. Seal; when the hull 1 shakes, the remaining water in the water pipe 48 will flow out, and the sample in the bottle body 41 will not flow out. The output end of the cylinder 7 drives the connecting pipe 23 to move upward, and the connecting pipe 23 is separated from the water pipe 48, so that sampling can be carried out at the next location; by fixing the water pipe 22 in the drag chain 10, the water pipe 22 moves with the drag chain when moving, which limits the movement trajectory of the water pipe 22 and prevents the water pipe 22 from bending when moving, resulting in poor water flow. The bridge frame 9 is used to support the drag chain 10.

[0091] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An unmanned inspection boat for sampling water quality at a sewage outlet into a river, characterized in that: It comprises a hull (1) and a suction assembly (2) arranged in the hull (1); The inspection unmanned ship also includes: A sampling bottle base (3) is fixedly arranged in the hull (1); A plurality of sampling bottles (4) are inserted and connected to the sampling bottle base (3) in a linear array; the sampling bottle base (3) is provided with a plurality of limiting holes (5) for placing the sampling bottles (4); A plurality of limiting components (6) corresponding one to one with the limiting holes (5); and used to limit the sampling bottle (4); The sampling bottle (4) comprises a bottle body (41); A water inlet pipe (42) is horizontally arranged on one side of the upper end of the bottle body (41); A slider (43) slidably disposed in the water inlet pipe (42); A limiting ring (44) is fixedly arranged on an end of the slider (43) away from the bottle body (41); A first spring (45) is arranged between the limiting ring (44) and the slider (43); A water inlet channel (46) is provided in the slider (43); An air inlet channel (47) is provided in the slider (43); one end of the water inlet channel (46) close to the limiting ring (44) is arranged horizontally; the other end of the water inlet channel (46) is arranged vertically; the water inlet channel (46) and the air inlet channel (47) are arranged in parallel; the other end of the air inlet channel (47) is located on a side of the other end of the water inlet channel (46) close to the bottle body (41); A water guide pipe (48) is fixedly arranged on the limiting ring (44), and one end of the water guide pipe (48) is slidably connected to one end of the water inlet channel (46) close to the limiting ring (44), and one end of the water guide pipe (48) and the other end of the water inlet channel (46) are in communication with the suction assembly (2); Two limiting strips (11) are fixedly provided at the lower end of the bottle body (41); limiting grooves (12) are provided on both sides of the limiting hole (5) and are plugged and connected with the limiting strips (11); The limiting component (6) comprises: Two first grooves (61) are formed on the sampling bottle base (3) and are located on both sides of the limiting hole (5) and are in communication with the limiting hole (5); A limiting block (62) is slidably disposed at one end of the first groove (61) close to the limiting hole (5); A second spring (63) is disposed in the first groove (61); Two second grooves (64) are formed on the side wall of the bottle body (41) and correspond one to one with the first grooves (61); the second grooves (64) are connected to the first grooves (61).

2. The unmanned inspection boat for sampling water quality at a sewage outlet into a river according to claim 1, characterized in that: The suction assembly (2) comprises a water pump (21) disposed in the hull (1), a water pipe (22) connected to the water pump (21), and a connecting pipe (23) connected to the water pipe (22); the connecting pipe (23) is located above the water guide pipe (48); A cylinder (7) is arranged above the connecting pipe (23), and an output end of the cylinder (7) is fixedly connected to the connecting pipe (23); A moving assembly (8) is provided on the sampling bottle base (3); the moving assembly (8) is used to drive the cylinder (7) to move along the arrangement direction of the sampling bottles (4).

3. The unmanned inspection boat for sampling water quality at a sewage outlet into a river according to claim 2, characterized in that: The moving component (8) comprises: Two fixing plates (81) fixedly arranged on the sampling bottle base (3); A screw rod (82) rotatably disposed between the two fixing plates (81) and located above the water conduit (48); A moving block (83) is disposed on the screw rod (82) and is threadably matched with the screw rod (82); Two guide rods (84) are fixedly arranged between the two fixed plates (81) and respectively penetrate the moving blocks (83); The motor (85) is fixedly mounted on one of the fixing plates (81), and the output end of the motor (85) is fixedly connected to the screw rod (82).

4. The unmanned inspection boat for sampling water quality at a sewage outlet into a river according to claim 3, characterized in that: A bridge frame (9) is fixedly arranged on one side of the two fixed plates (81); a drag chain (10) is arranged in the bridge frame (9); one end of the water pipe (22) connected to the connecting pipe (23) is fixedly arranged in the drag chain (10); one end of the drag chain (10) close to the connecting pipe (23) is fixedly connected to the output end of the cylinder (7); and the other end of the drag chain (10) is fixedly connected to the bridge frame (9).

5. The unmanned inspection boat for sampling water quality at a sewage outlet into a river according to claim 4, characterized in that: One end of the second spring (63) is fixedly connected to a side wall of the first groove (61) away from the limiting hole (5), and one end of the second spring (63) is fixedly connected to the limiting block (62).

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