Water quality sampling equipment for water conservancy

Abstract

The invention relates to the technical field of water conservancy water quality sampling, in particular to water conservancy water quality sampling equipment which comprises a sampling barrel, water inlets are formed in the outer wall of the sampling barrel in a circular array mode, inner cover plates are installed in the water inlets in a hinged mode, a water outlet pipe is arranged on the lower side of the sampling barrel, and the outer end of the water outlet pipe is connected with a sealing cover through threads; a bracket is arranged at the upper end of the sampling barrel, a fixed seat is arranged at the upper end of the bracket, and a plurality of groups of top cover plates are rotationally mounted on the outer side of the fixed seat. By arranging a trigger rod, when the trigger rod makes contact with the water bottom, the trigger rod can be stressed to trigger a limiting assembly to be opened, then a springback assembly drives a sleeve cover to ascend, a rubber film is reset through elasticity of the rubber film, negative pressure is generated in a bottom bin, and therefore the suction head making contact with sediment at the water bottom can suck sediment at the water bottom; sediment can be sucked into the bottom bin through the sampling barrel and the through hole, and compared with the mode that water and sediment are separately sampled through different devices, convenience is achieved, and time and cost are saved.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy and water quality sampling, in particular to a water conservancy and water quality sampling device. Background Art

[0002] Water quality is a crucial aspect in water conservancy project construction. The management and protection of water resources requires water quality testing. The main purpose of water quality testing is to evaluate the chemical, biological and physical characteristics of water bodies to ensure that water quality meets the needs of water resource protection and water conservancy project construction. Through water quality testing, problems and anomalies in water bodies can be discovered in a timely manner, and corresponding measures can be taken to adjust and manage them to ensure the sustainable use of water resources.

[0003] Most of the existing sampling technologies in water conservancy and water quality are to place the sampling equipment in the sampling water area, wait for the water to fill the cavity inside the sampler, then lift the sampler out, and then pour the water into the sampler. This sampling method is the simplest and most practical.

[0004] However, the existing water samplers are simple in structure and have almost no other functions except for collecting water. Although advanced samplers have various functions, their costs are usually high. In addition, water conservancy and water quality sampling usually cannot only sample water, but also requires sampling of sediment and other materials on the bottom of the water. Most water samplers cannot meet this sampling requirement, so they need to be used in conjunction with sediment samplers and other equipment, which is not only troublesome, but also increases the sampling steps and equipment costs. Summary of the invention

[0005] The purpose of the present invention is to provide a water conservancy water quality sampling device to solve the problem that the existing water sampler proposed in the above background technology cannot sample muddy water at the bottom of the water, so that the water conservancy water quality sampling work needs to be divided into different steps and equipment to carry out water and mud sampling.

[0006] To achieve the above object, the present invention provides the following technical solution: a water conservancy water quality sampling device, comprising a sampling barrel, wherein a circular array of water inlets are provided on the outer wall of the sampling barrel, an inner cover plate is hingedly installed in the water inlet, a water outlet pipe is provided on the lower side of the sampling barrel, and a sealing cover is connected to the outer end of the water outlet pipe through a thread; The upper end of the sampling barrel is provided with a bracket, the upper end of the bracket is provided with a fixed seat, the outer side of the fixed seat is rotatably mounted with multiple sets of top cover plates, and the upper end of the fixed seat is provided with a hanger; The lower side of the sampling barrel is connected with a bottom bin by a thread, and the bottom bin and the bracket are both conical in design, and a sleeve is provided at the lower end of the bottom bin, and a rebound component is provided on the inner lower side of the sampling barrel, and a cover is provided on the lower side of the rebound component, and the outer side of the cover is fixedly wrapped with a rubber film, and the upper end edge of the rubber film is fixedly connected to the lower inner wall of the sampling barrel, and a sampling barrel is provided on the lower side of the cover through a locking component, and the sampling barrel is movably inserted in the sleeve, and sealing rubber rings that fit the outer wall of the sampling barrel are provided at the openings on both sides of the upper side of the sleeve, and through holes are provided in an annular array on the upper side of the sampling barrel, and a suction head is fixedly connected to the lower side of the sampling barrel, and a trigger rod is provided on the lower side of the suction head, and the upper side of the trigger rod is connected to the sleeve through a limiting assembly.

[0007] Preferably, the outer diameter of the inner cover plate is matched with the inner diameter of the water inlet, the lower end faces of the water inlet and the inner cover plate are both arranged to be inclined, the inner end opening of the water outlet pipe is located on the upper side of the partition plate, the cross-section of the bracket is convex, the outer diameter of the top cover plate is matched with the gap size of the bracket, and the edge of the top cover plate rests on the upper side of the edge of the bracket.

[0008] Preferably, a limiting ring is provided on the inner side of the sampling barrel, the outer diameter of the limiting ring is matched with the inner diameter of the sampling barrel, the outer wall of the limiting ring is provided with a protrusion, the inner wall of the sampling barrel is provided with a groove matched with the protrusion, a hole is opened in the middle position of the fixing seat, and a pull rope is passed through the hole, the lower end of the pull rope is divided into six strands equidistantly connected to the upper end of the limiting ring, and a rope ring is fixedly provided on the upper end of the pull rope.

[0009] Preferably, the rebound assembly includes a partition plate, a partition plate is fixedly provided on the inner side of the sampling barrel, two groups of slides are fixedly provided at the lower end of the partition plate, and sliders are slidably provided in the two groups of slides, first springs are provided on opposite sides of the two groups of slides, two ends of the first spring are respectively fixed to the inner wall of the slide and the slider, guide blocks are provided on both sides of the slider, the inner wall of the slide is provided with a guide groove matched with the guide block, the lower end of the slider is hinged with a connecting rod, and the lower end of the connecting rod is hingedly connected to the upper end of the cover.

[0010] Preferably, the locking assembly includes a rotating shaft, cavities are provided on both sides of the cover, a rotating shaft is fixedly installed in the cavity, a seesaw is rotatably sleeved on the rotating shaft, a limiting block is provided at the inner end of the seesaw, second springs are transversely provided in the cavities on both sides of the cover, the two ends of the second spring are respectively connected to the inner wall of the cover and the end of the limiting block, and a limiting groove is provided on the outer wall of the upper end of the sampling tube.

[0011] Preferably, the limiting block is in the shape of a quarter sphere, the spherical surface of the limiting block faces downward, the upper end of the limiting block is a plane, and the longitudinal cross-sectional shape of the limiting groove is adapted to the outer shape of the limiting block.

[0012] Preferably, the through hole is oval in shape, the suction head is hemispherical, holes are evenly formed on the surface of the suction head, and the diameter of the trigger rod is larger than the outer diameter of the lower end opening of the sleeve.

[0013] Preferably, the trigger rod is arc-shaped, the trigger rod does not fit the suction head, the inner diameter of the trigger rod is larger than the outer diameter of the lower end of the suction head, and two sets of spur gears are provided at the upper end of the trigger rod. The upper end of the spur gear passes through the side of the sleeve and the limiting plate is installed by screws.

[0014] Preferably, the limiting assembly includes a gear, gears are rotatably installed at both ends of the sleeve, a tooth block is slidably installed inside the sleeve, the side of the gear is meshed with the upper teeth of the spur rod, the lower side of the gear is meshed with the upper teeth of the tooth block, the outer wall of the sampling tube is provided with a slot, the tooth block is inserted in the slot, and the inner diameter of the slot is adapted to the end size of the tooth block.

[0015] Preferably, a resistance protrusion is provided at the upper end of the gear, sleeve blocks are provided at both ends of the sleeve, a resistance block is provided at the lower end opening of the sleeve, the resistance block and the resistance protrusion are in fit, the resistance protrusion and the resistance block have rounded corners at one end, a top plate is provided on the inner upper side of the sleeve, a third spring is provided between the top plate and the resistance block, the two ends of the third spring are respectively abutted against the resistance block and the top plate, a screw sleeve is provided in the middle position of the top plate, a screw rod is rotatably installed on the upper end of the sleeve block, and the screw sleeve is threadedly sleeved on the lower side of the screw rod.

[0016] The beneficial effects of the present invention are as follows: the present invention, by arranging a trigger rod, when the trigger rod touches the bottom of the water, the force will trigger the limit assembly to open, and then the rebound assembly will drive the cover to rise, so that the film is reset by its own elasticity and a negative pressure is generated in the bottom bin, so that the suction head that contacts the bottom mud and sand can suck the mud and sand into the bottom bin through the sampling tube and the through hole. In this way, during the sampling process, not only can water samples be taken through the sampling bucket, but also the equipment can be put into the water and allowed to sink to the bottom naturally, and the mud and sand on the bottom of the water can be automatically taken after the trigger rod touches the bottom of the water. That is, by using this device, the mud and sand on the bottom of the water can be taken at the same time as the water sample. Compared with the method of using different equipment to separately take water and mud and sand, it is not only convenient, but also saves time and cost. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic front view of the structure of the present invention; Figure 2 It is a schematic diagram of the structural sampling state of the present invention; Figure 3 It is a schematic diagram of a front cross-sectional state of the structure of the present invention; Figure 4 It is a schematic diagram of the disassembled state of the bottom bin and the sampling tube in the present invention; Figure 5 It is a structural schematic diagram of the rebound component in the present invention; Figure 6 It is a structural schematic diagram of the locking assembly in the present invention; Figure 7 It is a structural schematic diagram of the limiting component in the present invention; Figure 8 It is a schematic diagram of the structural disassembly of the spur gear rod and the limit plate in the present invention; Fig. 9 It is a schematic diagram of the structure of the resistance protrusion and the resistance block in the present invention.

[0019] In the figure: 1, sampling barrel; 2, water inlet; 3, inner cover; 4, water outlet; 5, sealing cover; 6, bracket; 7, fixing seat; 8, top cover; 9, hanger; 10, limit ring; 11, pull rope; 12, rope ring; 13, bottom bin; 14, sleeve; 15, partition plate; 16, slide; 17, slide block; 18, first spring; 19, guide block; 20, guide groove; 21, connecting rod; 22, cover; 23, rubber Membrane; 24, rotating shaft; 25, seesaw; 26, limit block; 27, second spring; 28, sampling tube; 29, limit slot; 30, through hole; 31, suction head; 32, trigger rod; 33, straight gear rod; 34, limit plate; 35, gear; 36, gear block; 37, slot; 38, resistance protrusion; 39, sleeve block; 40, resistance block; 41, top plate; 42, third spring; 43, screw sleeve; 44, screw. DETAILED DESCRIPTION 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.

[0021] See also Figure 1-9 The present invention provides an embodiment: a water conservancy water quality sampling device, comprising a sampling barrel 1, a circular array of water inlets 2 are provided on the outer wall of the sampling barrel 1, an inner cover plate 3 is hingedly installed inside the water inlet 2, a water outlet pipe 4 is provided on the lower side of the sampling barrel 1, and a sealing cover 5 is connected to the outer end of the water outlet pipe 4 through a thread; A bracket 6 is provided at the upper end of the sampling barrel 1, a fixed seat 7 is provided at the upper end of the bracket 6, multiple sets of top cover plates 8 are rotatably mounted on the outer side of the fixed seat 7, and a hanger 9 is provided at the upper end of the fixed seat 7; The lower side of the sampling barrel 1 is connected with a bottom bin 13 by a thread, the bottom bin 13 and the bracket 6 are both of conical design, a sleeve 14 is provided at the lower end of the bottom bin 13, a rebound component is provided at the lower side of the sampling barrel 1, and a cover 22 is provided at the lower side of the rebound component, the outer side of the cover 22 is fixedly wrapped with a film 23, the upper edge of the film 23 is fixedly connected to the lower inner wall of the sampling barrel 1, the film 23 is made of stretchable rubber, and is flat in its normal state. When the film 23 is stretched, Figure 4 As shown, the shape of the inner wall of the bottom bin 13 is consistent with that of the inner wall, and the gap is reduced as much as possible, so as to ensure that there is no excessive cavity in the bottom bin 13, which causes the device to float upside down after entering the water due to the cavity. The lower side of the cover 22 is provided with a sampling tube 28 through a locking assembly. The sampling tube 28 is movably inserted in the sleeve 14, and the upper openings on both sides of the sleeve 14 are provided with sealing rubber rings that fit the outer wall of the sampling tube 28. Figure 4 As shown, the upper and lower sides of the sampling tube 28 are sealed by a rubber ring. When the sampling tube 28 does not move up to expose the through hole 30 in the bottom bin 13, the bottom bin 13 will be in a closed state, thereby ensuring that it can be normally ready to fire when under negative pressure. The upper side of the sampling tube 28 is provided with a through hole 30 in an annular array, and the lower side of the sampling tube 28 is fixedly connected with a suction head 31. The lower side of the suction head 31 is provided with a trigger rod 32, and the upper side of the trigger rod 32 is connected to the sleeve 14 through a limit assembly.

[0022] Furthermore, the outer diameter of the inner cover plate 3 is adapted to the inner diameter of the water inlet 2, the lower end surfaces of the water inlet 2 and the inner cover plate 3 are both arranged to be inclined, the inner end opening of the water outlet pipe 4 is located on the upper side of the partition plate 15, the cross-section of the bracket 6 is convex, the outer diameter of the top cover plate 8 is adapted to the gap size of the bracket 6, and the edge of the top cover plate 8 rests on the upper side of the edge of the bracket 6.

[0023] like Figure 2 and Figure 3 As shown, this structure prevents the inner cover plate 3 from rotating outward and the top cover plate 8 from rotating downward, so that after entering the water, the inner cover plate 3 will be affected by the water pressure to rotate inward to open the water inlet 2, so that water can enter the sampling barrel 1, and the top cover plate 8 will rotate upward to open the upper side of the sampling barrel 1 to expel the air, and when the device moves downward, the opened water inlet 2 can be used to make water flow to facilitate the sinking of the device.

[0024] Furthermore, a limiting ring 10 is provided on the inner side of the sampling barrel 1, the outer diameter of the limiting ring 10 is matched with the inner diameter of the sampling barrel 1, the outer wall of the limiting ring 10 is provided with a protrusion, and the inner wall of the sampling barrel 1 is provided with a groove matched with the protrusion. A hole is opened in the middle position of the fixing seat 7, and a pull rope 11 is passed through the hole. The lower end of the pull rope 11 is divided into six strands equidistantly connected to the upper end of the limiting ring 10, and a rope ring 12 is fixedly provided at the upper end of the pull rope 11.

[0025] like Figure 3 As shown, this structure is used for pulling the limit ring 10 upward after the device has finished sampling and is out of water, so that the limit ring 10 abuts against the inner side of the inner cover plate 3, thereby abutting the inner cover plate 3 to keep the water inlet 2 closed to avoid accidental opening and leakage of samples.

[0026] Furthermore, the rebound assembly includes a partition plate 15, and the partition plate 15 is fixedly arranged on the inner side of the sampling barrel 1, and two groups of slides 16 are fixedly arranged at the lower end of the partition plate 15, and sliders 17 are slidably arranged in the two groups of slides 16, and first springs 18 are arranged on the opposite sides of the two groups of slides 16, and the two ends of the first spring 18 are respectively fixed to the inner wall of the slide 16 and the slider 17, and guide blocks 19 are arranged on both sides of the slider 17, and the inner wall of the slide 16 is provided with a guide groove 20 adapted to the guide block 19, and the lower end of the slider 17 is hinged with a connecting rod 21, and the lower end of the connecting rod 21 is hingedly connected to the upper end of the cover 22.

[0027] like Figure 5 As shown, the structure is located between the partition plate 15 and the adhesive film 23, and the space is closed. After being triggered, the rebound component can quickly drive the cover 22 to move upward, so that the adhesive film 23 can rebound and reset, so as to suck the mud and sand into the bottom bin 13 through negative pressure.

[0028] Furthermore, the locking assembly includes a rotating shaft 24, and cavities are provided on both sides of the cover 22, in which the rotating shaft 24 is fixedly installed, and a seesaw 25 is rotatably sleeved on the rotating shaft 24, and a limit block 26 is provided at the inner end of the seesaw 25. Second springs 27 are transversely provided in the cavities on both sides of the cover 22, and the two ends of the second spring 27 are respectively connected to the inner wall of the cover 22 and the end of the limit block 26, and a limit groove 29 is provided on the outer wall of the upper end of the sampling tube 28. The limit block 26 is in the shape of a quarter sphere, with the spherical surface of the limit block 26 facing downward, and the upper end of the limit block 26 is a plane, and the longitudinal cross-sectional shape of the limit groove 29 is adapted to the outer shape of the limit block 26.

[0029] like Figure 6 As shown, the structure is used to connect the cover 22 and the sampling tube 28, and can be opened by manually pressing the rocker 25. When connected, the sampling tube 28 only needs to be inserted into the cover 22 to self-lock. The operation is simple and convenient. At the same time, the limit block 26 will rotate in the limit groove 29, thereby reducing the operational movement obstacles of the equipment and avoiding affecting the normal use of the device.

[0030] Furthermore, the through hole 30 is oval in shape, the suction head 31 is hemispherical, holes are evenly formed on the surface of the suction head 31 , and the diameter of the trigger rod 32 is larger than the outer diameter of the lower opening of the sleeve 14 .

[0031] like Figure 4 As shown, the hemispherical shape of the suction head 31 can reduce complete blockage caused by impurities covering the surface while ensuring the suction efficiency, and the waist-shaped hole of the through hole 30 can facilitate the mud and sand to pass through the sampling tube 28 into the bottom bin 13.

[0032] Furthermore, the trigger rod 32 is arc-shaped, the trigger rod 32 does not fit with the suction head 31, the inner diameter of the trigger rod 32 is larger than the outer diameter of the lower end of the suction head 31, and two sets of straight tooth rods 33 are provided at the upper end of the trigger rod 32. The upper end of the straight tooth rod 33 passes through the side of the sleeve 14 and is installed with a limit plate 34 by screws.

[0033] like Figure 4 and Figure 8 As shown, the structure is used to facilitate pulling the suction head 31 and the trigger rod 32 for operation. At the same time, the limit plate 34 and the straight tooth rod 33 can be separated by unscrewing the screws, so that the straight tooth rod 33 can be removed for replacement, thereby increasing the practicality of the device.

[0034] Furthermore, the limiting assembly includes a gear 35, gears 35 are rotatably installed at both ends of the sleeve 14, a tooth block 36 is slidably installed inside the sleeve 14, the side of the gear 35 is meshed with the upper teeth of the spur rod 33, the lower side of the gear 35 is meshed with the upper teeth of the tooth block 36, and a slot 37 is provided on the outer wall of the sampling tube 28, the tooth block 36 is inserted in the slot 37, and the inner diameter of the slot 37 is adapted to the end size of the tooth block 36.

[0035] like Figure 4 and Figure 7 As shown, this structure is used to lock and limit the sampling tube 28 after it is pulled down to a specified position to prevent it from rebounding, so that the device can be in a ready-to-fire state.

[0036] Furthermore, a resistance protrusion 38 is provided at the upper end of the gear 35, and sleeve blocks 39 are provided at both ends of the sleeve 14. A resistance block 40 is provided at the lower end opening of the sleeve block 39, and the resistance block 40 and the resistance protrusion 38 are in contact with each other, and the corners of the resistance protrusion 38 and the resistance block 40 opposite to each other are rounded. A top plate 41 is provided on the inner upper side of the sleeve block 39, and a protrusion is provided on the side of the top plate 41, and a groove for the protrusion to slide up and down is provided on the inner wall of the sleeve block 39, so that the top plate 41 can move up and down but cannot rotate, so that the screw sleeve 43 can perform threading action with the rotating screw 44, thereby realizing up and down adjustment, a third spring 42 is provided between the top plate 41 and the resistance block 40, and the two ends of the third spring 42 are respectively against the resistance block 40 and the top plate 41, and a screw sleeve 43 is provided at the middle position of the top plate 41, and a screw 44 is rotatably installed on the upper end of the sleeve block 39, and the screw sleeve 43 is connected to the lower side of the screw 44 through a thread.

[0037] like Figure 7 and Fig. 9As shown, the structure is used to apply resistance to the rotation of the gear 35. When the gear 35 rotates until the tooth block 36 is inserted into the slot 37, the resistance protrusion 38 will resist the resistance block 40 and push it upward through the rounded corner, so that the resistance block 40 squeezes the third spring 42 by moving upward, and then the resistance block 40 will be reset by the restoring force of the third spring 42. Then the resistance block 40 will resist the side of the resistance protrusion 38. After the device enters the water, during the process of entering the water and the sinking of the device, the trigger rod 32 will be driven by the force to move the straight tooth rod 33 upward due to the impact on the water surface and the suspended matter in the water. At this time, since the resistance block 40 resists the limit of the resistance protrusion 38, the straight tooth rod 33 will not easily drive the gear 35 to rotate, so the device is not easy to trigger. When the device sinks to the bottom, the trigger rod 32 will be affected by the gravity and inertia of the sampling barrel 1 and hit the bottom of the water. After the force is sufficient, the resistance protrusion 38 will be forced to squeeze the resistance block 40 to move upward, thereby opening the resistance block 40, so that the gear 35 can rotate to open the limit assembly, and the force can be manually adjusted. It only needs to rotate the screw 44 with a screwdriver so that the screw sleeve 43 drives the top plate 41 downward through the thread action, squeezing the upper end of the third spring 42, so that the third spring 42 is forced to squeeze the upper end of the resistance block 40 to increase the trigger force, and vice versa.

[0038] Working principle: When in use, a rope can be tied to the hanger 9 in advance, and the upper end of the sampling tube 28 can be aligned with the lower end of the cover 22 for insertion. When the upper end of the sampling tube 28 is inserted, it will squeeze the round surfaces of the two groups of limit blocks 26, and squeeze and push the two groups of limit blocks 26 apart, and make them squeeze the second spring 27. Then, after the sampling tube 28 is completely inserted into the cover 22, the limit block 26 will align with the limit groove 29, and the second spring 27 in the compressed state will push it back to its original position through the restoring force, causing the limit block 26 to be stuck in the limit groove 29. At this time, the upper plane of the limit block 26 is against the upper plane of the limit groove 29, and the sampling tube 28 cannot be pulled down to escape from the cover 22. If it needs to be opened, it only needs to press the outer ends of the two groups of seesaws 25, so that the seesaws 25 rotate and drive the limit block 26 to leave the limit groove 29, so that the sampling tube 28 can be separated from the cover 22. Figure 6 As shown; After the sampling barrel 28 is installed, the bottom bin 13 is screwed to the lower side of the sampling barrel 1 through threads, and then the limiting ring 10 is ensured to be at the lowermost side of the sampling barrel 1, and then the suction head 31 is pulled down, so that the suction head 31 drives the sampling barrel 28 and the cover 22 to move downward, and the cover 22 pulls the film 23 to move downward by elastic force and deform into a cone shape, and when the cover 22 moves downward, it drives the two sets of sliders 17 to move toward each other through the two sets of connecting rods 21, and compresses the first spring 18, as shown in FIG. Figure 3 and Figure 4The state shown in the figure, at this time, the air in the bottom bin 13 will be discharged, and then after the sampling tube 28 is pulled down to the limit, the tooth block 36 will align with the slot 37, and then the sampling tube 28 will be kept stationary, and the trigger rod 32 will be pulled downward, so that the trigger rod 32 drives the two sets of spur rods 33 to move downward, and when the spur rods 33 move downward, the gear 35 will be driven to rotate through the teeth, and the gear 35 will drive the tooth block 36 to move outward through the teeth, so that the tooth block 36 slides and inserts into the slot 37. At this time, due to the limitation of the slot 37, the sampling tube 28 cannot move up and down, and the rubber film 23 and the first spring 18 are in the ready state, and then the device can be put into water.

[0039] The rope is released to allow the device to naturally fall to the bottom of the water. During this process, due to the water pressure, the inner cover plate 3 will be pressed to rotate inwards and open, while the top cover plate 8 will be opened upwards. Figure 2 As shown, the air in the sampling barrel 1 will be discharged, and water will automatically enter the sampling barrel 1. After the trigger rod 32 touches the bottom, the trigger rod 32 will be pushed upward due to gravity, causing the straight tooth rod 33 to move upward, thereby driving the gear 35 to reverse, so that the tooth block 36 is retracted into the sleeve 14. After the tooth block 36 leaves the slot 37, the resistance protrusion 38 is not restricted, and the first spring 18 in the compressed state and the rubber film 23 in the stretched state will rebound. When the first spring 18 rebounds, it will drive the two sets of sliders 17 to slide away, and the connecting rod 21 will pull the cover 22 to move upward, and the rubber film 23 will move up and reset, so that negative pressure is generated in the bottom bin 13. During the process of the cover 22 driving the sampling tube 28 to move upward, the through hole 30 will leak. At this time, the outside is connected to the bottom bin 13, and due to the influence of negative pressure, the suction head 31 touches the bottom at the same time. , the external mud and water will be sucked into the bottom bin 13 through the trigger rod 32 and the sampling tube 28 for storage until the internal and external air pressure is stable, and then the device can be lifted up. After the sampling barrel 1 is full of water, when it leaves the water, it contains water inside, and the water pressure will make the inner cover 3 press against the water inlet 2, so that it is not easy to leak. However, in order to avoid the inner cover 3 opening when the device is tilted, after it is lifted out of the water, the rope ring 12 needs to be pulled from the inside so that the rope ring 12 pulls the limit ring 10 upwards through the pull rope 11, so that the limit ring 10 presses against the inner side of the inner cover 3 in the sampling barrel 1 to ensure that the inner cover 3 can always be in a closed state. Finally, the sealing cover 5 can be opened, and water can be discharged through the water outlet pipe 4 for sampling, and the bottom bin 13 can be rotated to open, and then the sampling tube 28 and the cover 22 can be separated to extract the mud and sand samples in the bottom bin 13.

[0040] During use, the device should be kept straight up and down as much as possible to ensure that the trigger rod 32 touches the bottom first. At the same time, the device should not be turned upside down into the water. The device should be entered into the water slowly to avoid hitting the water surface with too much force to trigger the trigger rod 32. The above is the entire working principle of the present invention.

[0041] In the description of the present application, it should be understood that the terms "front", "rear", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A water conservancy water quality sampling device, characterized in that: The sampling barrel (1) comprises a sampling barrel (1), wherein a water inlet (2) is provided in a circular array on the outer wall of the sampling barrel (1), an inner cover plate (3) is hingedly installed inside the water inlet (2), a water outlet pipe (4) is provided on the lower side of the sampling barrel (1), and a sealing cover (5) is connected to the outer end of the water outlet pipe (4) via a thread; The upper end of the sampling barrel (1) is provided with a bracket (6), the upper end of the bracket (6) is provided with a fixing seat (7), the outer side of the fixing seat (7) is rotatably mounted with multiple sets of top cover plates (8), and the upper end of the fixing seat (7) is provided with a hanger (9); The lower side of the sampling barrel (1) is connected to a bottom bin (13) via a threaded connection. The bottom bin (13) and the bracket (6) are both of conical design. A sleeve (14) is provided at the lower end of the bottom bin (13). A rebound component is provided at the lower side of the interior of the sampling barrel (1), and a cover (22) is provided at the lower side of the rebound component. The outer side of the cover (22) is fixedly wrapped with a film (23). The upper edge of the film (23) is fixedly connected to the lower inner wall of the sampling barrel (1). The lower side of the cover (22) is locked via a locking component. A sampling barrel (28) is provided, and the sampling barrel (28) is movably inserted in the sleeve (14). Sealing rubber rings that fit the outer wall of the sampling barrel (28) are provided at both openings on the upper side of the sleeve (14). Through holes (30) are provided in an annular array on the upper side of the sampling barrel (28). A suction head (31) is fixedly connected to the lower side of the sampling barrel (28). A trigger rod (32) is provided on the lower side of the suction head (31), and the upper side of the trigger rod (32) is connected to the sleeve (14) via a limit assembly.

2. A water conservancy water quality sampling device according to claim 1, characterized in that: The outer diameter of the inner cover plate (3) is matched with the inner diameter of the water inlet (2); the lower end surfaces of the water inlet (2) and the inner cover plate (3) are both arranged to be inclined; the inner end opening of the water outlet pipe (4) is located on the upper side of the partition plate (15); the cross section of the bracket (6) is convex; the outer diameter of the top cover plate (8) is matched with the gap size of the bracket (6); and the edge of the top cover plate (8) is placed on the upper side of the edge of the bracket (6).

3. A water conservancy water quality sampling device according to claim 1, characterized in that: A limit ring (10) is arranged on the inner side of the sampling barrel (1), the outer diameter of the limit ring (10) is matched with the inner diameter of the sampling barrel (1), the outer wall of the limit ring (10) is provided with a protrusion, and the inner wall of the sampling barrel (1) is provided with a groove matched with the protrusion. A hole is opened in the middle position of the fixing seat (7), and a pull rope (11) is passed through the hole. The lower end of the pull rope (11) is divided into six strands at equal distances and connected to the upper end of the limit ring (10), and a rope ring (12) is fixedly arranged on the upper end of the pull rope (11).

4. A water conservancy water quality sampling device according to claim 1, characterized in that: The rebound assembly comprises a partition plate (15), the partition plate (15) being fixedly arranged on the inner side of the sampling barrel (1), two groups of slides (16) being fixedly arranged on the lower end of the partition plate (15), and sliders (17) being slidably arranged in the two groups of slides (16), first springs (18) being arranged on opposite sides of the two groups of slides (16), the two ends of the first spring (18) being respectively fixed to the inner wall of the slide (16) and the slider (17), guide blocks (19) being arranged on both sides of the slider (17), the inner wall of the slide (16) being provided with guide grooves (20) matching the guide blocks (19), the lower end of the slider (17) being hingedly connected to a connecting rod (21), the lower end of the connecting rod (21) being hingedly connected to the upper end of the cover (22).

5. The water conservancy water quality sampling equipment according to claim 1, characterized in that: The locking assembly comprises a rotating shaft (24), cavities are provided on both sides of the cover (22), the rotating shaft (24) is fixedly installed in the cavity, a seesaw (25) is rotatably sleeved on the rotating shaft (24), a limit block (26) is provided at the inner end of the seesaw (25), second springs (27) are transversely provided in the cavities on both sides of the cover (22), the two ends of the second spring (27) are respectively connected to the inner wall of the cover (22) and the end of the limit block (26), and a limit groove (29) is provided on the outer wall of the upper end of the sampling tube (28).

6. A water conservancy water quality sampling device according to claim 5, characterized in that: The limiting block (26) is in the shape of a quarter sphere, the spherical surface of the limiting block (26) faces downward, the upper end of the limiting block (26) is a plane, and the longitudinal cross-sectional shape of the limiting groove (29) is compatible with the outer shape of the limiting block (26).

7. The water conservancy water quality sampling equipment according to claim 1, characterized in that: The through hole (30) is oval in shape, the suction head (31) is hemispherical, holes are evenly formed on the surface of the suction head (31), and the diameter of the trigger rod (32) is larger than the outer diameter of the lower end opening of the sleeve (14).

8. The water conservancy water quality sampling equipment according to claim 1, characterized in that: The trigger rod (32) is in an arc shape, the trigger rod (32) does not fit the suction head (31), the inner diameter of the trigger rod (32) is larger than the outer diameter of the lower end of the suction head (31), and two groups of spur gear rods (33) are arranged at the upper end of the trigger rod (32), and the upper ends of the spur gear rods (33) pass through the side of the sleeve (14) and are fixed with a limit plate (34) by means of screws.

9. The water conservancy water quality sampling device according to claim 1, characterized in that: The limit assembly comprises a gear (35), gears (35) are rotatably mounted in both ends of the sleeve (14), a tooth block (36) is slidably mounted inside the sleeve (14), the side edge of the gear (35) meshes with the upper teeth of the spur rod (33), the lower side of the gear (35) meshes with the upper teeth of the tooth block (36), a slot (37) is formed on the outer wall of the sampling tube (28), the tooth block (36) is inserted into the slot (37), and the inner diameter of the slot (37) is matched with the end size of the tooth block (36).

10. A water conservancy water quality sampling device according to claim 9, characterized in that: A resistance protrusion (38) is provided at the upper end of the gear (35), sleeve blocks (39) are provided at both ends of the sleeve (14), a resistance block (40) is provided at the lower end opening of the sleeve block (39), the resistance block (40) and the resistance protrusion (38) are fitted together, and the corners of the ends opposite to the resistance protrusion (38) and the resistance block (40) are rounded, a top plate (41) is provided on the upper inner side of the sleeve block (39), a third spring (42) is provided between the top plate (41) and the resistance block (40), two ends of the third spring (42) are respectively abutted against the resistance block (40) and the top plate (41), a screw sleeve (43) is provided at the middle position of the top plate (41), a screw rod (44) is rotatably mounted on the upper end of the sleeve block (39), and the screw sleeve (43) is sleeved on the lower side of the screw rod (44) through a thread.

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