A continuous automatic water quality sampling device

Abstract

The present invention relates to the field of water quality sampling equipment, and particularly to a continuous automatic water quality sampling equipment, which includes a sampling body. A sample storage through groove with a rectangular cross-section is opened at the top of the sampling body, and a water sample separation component is arranged on one outer wall of the sampling body. Among them, the water sample separation component includes: a support frame fixed to the outer wall of the sampling body by bolts; after the present invention inserts the sample storage through groove into the river, the river water samples inside it are in the original different water layer distribution states in the river, avoiding the problem that water samples from other depths flow away during the sampling process at different depths, and the water samples in the sample storage through groove are vertically divided by the first insertion plate. The water samples at different depths in the sample storage through groove are in a relatively sealed environment and are difficult to flow, ensuring that the collected water samples are sufficient to prove the water quality conditions at different depths at this sampling point and avoiding the outflow of water samples from the sampling area.

Description

Technical Field

[0001] The present invention relates to the field of water quality sampling equipment, and particularly to a continuous automatic water quality sampling equipment. Background Art

[0002] Water is one of the essential elements for human survival. The state has formulated regulations for the evaluation, prediction, and forecasting of water environment quality. At present, China monitors the pollutants in all rivers, reservoirs, etc. that enter surface water bodies and the wastewater discharged from production and living facilities to prevent water pollution and protect and improve the water environment. Now, with the growth of the national economy, river pollution is becoming increasingly serious. Doing a good job in water quality detection is an important factor related to the development of the national economy and the health of the people. In the work of water quality detection, water quality sampling is a very important link.

[0003] Some patent documents related to water quality sampling equipment are disclosed in the prior art. The Chinese patent with the publication number CN109100181A discloses a new type of river water quality sampling device and its use method, including a polygonal floating device. A connector is provided at the center of the top of the polygonal floating device. An electric push rod is fixedly connected to the center of the bottom of the polygonal floating device. The bottom of the electric push rod is connected to a sampling device. Three groups of collection boxes are respectively penetrated and connected to the lower part of the left outer wall and the upper part of the right outer wall of the sampling device.

[0004] In the process of river water quality sampling in the prior art, in some cases, it is necessary to conduct research on the stratification degree of the water body to determine the number of sampling points arranged in the vertical direction of the water body. Therefore, it is necessary to sample water samples at different depths at the same location in the river to understand the sample information at different depths. Since the water in the river is flowing, especially in a live river, and the water flow velocities at different depths are different (the deeper the water depth, the slower the flow velocity), it is necessary to master the movement of microorganisms, pollutants, and heavy metals in the river channel (microorganisms in water have the property of enrichment, pollutants have the property of local diffusion, and heavy metals have the property of mechanical migration). After the sampling device in the prior art samples the water in one depth, it will gradually sample the water in different depth water layers. At this time, the water samples at other depths have flowed away with the flow of the water, resulting in the situation that microorganisms, pollutants, and heavy metals have flowed out of the sampling area with the water flow, causing errors in the subsequent analysis results of water quality sampling. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies existing in the prior art and propose a continuous automatic water quality sampling equipment.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: A continuous automatic water quality sampling device, including a sampling body, a sample storage through groove with a rectangular cross-section is opened at the top of the sampling body, and a water sample separation component is arranged on one outer wall of the sampling body. Among them, the water sample separation component includes: a support frame fixed to the outer wall of the sampling body by bolts;

[0007] On the outer wall of the support frame away from the sampling body, a first hydraulic cylinder is fixedly connected by bolts. The output end of the first hydraulic cylinder is fixedly connected with a support plate. On the outer wall of the support plate away from the output end of the first hydraulic cylinder, a first insertion plate is fixedly connected by bolts. A first insertion slot for precisely inserting the first insertion plate is opened on one outer wall of the sample storage through groove;

[0008] A fixed seat is integrally formed on one outer wall of the sampling body adjacent to the support frame. A sinking guiding component is arranged on the outer wall of the fixed seat away from the sampling body.

[0009] Preferably, the sinking guiding component includes: two guiding platforms symmetrically fixed to the outer wall of the fixed seat by bolts. Guiding holes are opened at the tops of the two guiding platforms. A guiding rod penetrates through the guiding holes. A top plate is arranged at the top end of the guiding rod, and a bottom plate is arranged at the bottom end of the guiding rod.

[0010] Preferably, a sampling body inclination adjustment component is arranged at the outer side position of the top plate. Among them, the sampling body inclination adjustment component includes: a mounting plate arranged at the outer side position of the top plate. A rotary cylinder is fixedly connected by bolts at the central position of the outer wall of the mounting plate close to the outer wall of the top plate. The output end of the rotary cylinder is fixedly connected to the top plate. A rotary reserved groove for the top plate to rotate is opened at the top of the mounting plate. A large-stroke electric push rod is fixedly connected by bolts at the top of the mounting plate. The output end of the large-stroke electric push rod is fixedly connected to the sampling body. The top plate is rotatably connected to the rotary reserved groove.

[0011] Preferably, a smooth rod is arranged between the top plate and the bottom plate close to the middle position of the two guiding rods. A lifting platform is sleeved on the outer wall of the smooth rod. A first liquid level sensor and a water flow rate sensor are fixedly connected by bolts on one outer wall of the lifting platform. The first liquid level sensor is located on one side of the water flow rate sensor. A traction rope is arranged at the top of the lifting platform. One end of the traction rope is held by an operator.

[0012] Preferably, a flushing component is arranged inside the sampling body. The flushing component includes a clean water storage cavity opened at a position inside the sampling body close to one side of the sample storage through groove. The inside of the clean water storage cavity is filled with clean water. A second slot is opened at a position on one outer wall of the sampling body close to one side of the clean water storage cavity. A second plug board is fixedly connected by bolts at a position on one outer wall of the support board close to one side of the first plug board. The second plug board can be precisely inserted through and into the second slot. A threaded cover is screwed and connected by threads at a position on the top of the sampling body above the clean water storage cavity.

[0013] Preferably, rubber pads are embedded at positions on one outer wall of the sampling body close to the sample storage through groove and the clean water storage cavity. One side of the rubber pad is communicated with the internal space of the sample storage through groove and the clean water storage cavity. The rubber pad is made of butyl rubber.

[0014] Preferably, a needle position adjusting component is arranged on the outer side wall of the fixed seat. Among them, the needle position adjusting component includes: a first waterproof motor fixedly bolted to the top of the fixed seat. The output end of the first waterproof motor is fixedly connected with a first ball screw. A nut seat on the first ball screw is fixedly connected by a nut with a moving frame. A second waterproof motor is fixedly connected by bolts at a position on one outer wall of the moving frame. The output end of the second waterproof motor is fixedly connected with a second ball screw. A nut seat on the second ball screw is fixedly connected by a nut with a moving block. A through groove is opened at a position on one outer wall of the moving frame close to the outside of the moving block, and the cross section of the moving frame is an L-shaped structure.

[0015] Preferably, a second hydraulic cylinder is fixedly connected by bolts at the central position of one outer wall of the moving block away from the fixed seat. The output end of the second hydraulic cylinder is fixedly connected with a fixed disk. A fixed rod is welded on one outer wall of the fixed disk away from the output end of the second hydraulic cylinder. A limiting disk is welded at one end of the fixed rod away from the fixed disk. A needle is embedded at the middle position of one outer wall of the limiting disk.

[0016] Preferably, a liquid extraction pump is arranged at one side position of the mounting plate. A water pipe is arranged between the input end of the liquid extraction pump and one end of the needle, and a sampling pipe is arranged at the output end of the liquid extraction pump.

[0017] Preferably, a second hydraulic sensor is embedded at the horizontal position on one outer wall of the moving frame close to the needle.

[0018] Compared with the prior art, the present invention has the following improvements and advantages:

[0019] First, after the sample storage through - slot of the present invention is inserted into the river, the river water samples inside it are in the original different water - layer distribution state in the river. The water samples at different depths in the sample storage through - slot are difficult to flow with the flow of the water, avoiding the problem that water samples at other depths flow away during the sampling process at different depths. And the water samples in the sample storage through - slot are divided in the vertical direction by the first insertion plate. The water samples at different depths in the sample storage through - slot are in a relatively sealed environment and are difficult to flow, ensuring that the collected water samples are sufficient to prove the water quality conditions at different depths at this sampling point and avoiding the outflow of water samples from the sampling area.

[0020] Second, by detecting the water flow velocities of the upper and lower water layers within the sampling range, the present invention can calculate the inclination angle between the sinking guiding component and the horizontal plane using the velocity difference, so as to quickly guide the sampling body to be inserted into the river obliquely. The sample storage through - slot on the sampling body can collect water samples at different depths in the vertical direction at the same sampling location and at the same time to the greatest extent, avoiding the loss of water samples caused by different water flow velocities at different depths during continuous sampling, preventing water samples from flowing out of the sampling area with the water flow, and making the subsequent sample detection results more accurate.

[0021] Third, through the setting of the flushing component in the present invention, after sampling the water quality at a certain depth, it can flush the residual water samples inside the needle, water pipe, liquid - pumping pump and sampling pipe, realizing self - cleaning, avoiding the mixing of water samples at different depths after the needle is inserted into the sample storage through - slot, preventing water samples from being disturbed, and ensuring the effectiveness of the sampling samples of water at different depths at the same location. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the structural schematic diagram of the present invention;

[0023] Figure 2 is the partial internal structural schematic diagram of the sampling body of the present invention;

[0024] Figure 3 is the structural schematic diagram of the support frame of the present invention;

[0025] Figure 4 is the combined structural schematic diagram of the sampling body and the support frame of the present invention;

[0026] Figure 5 is the structural schematic diagram of the mounting plate of the present invention;

[0027] Figure 6 is the exploded schematic diagram of the fixed seat of the present invention;

[0028] Figure 7 is the exploded schematic diagram of the limit disc of the present invention;

[0029] Figure 8 of the present invention Figure 1Enlarged view of part A in

[0030] Figure 9 Schematic diagram for calculating the inclination angle of the sinking guide component in the figure of the present invention.

[0031] In the figure: 1. Sampling body; 2. Sample storage through groove; 3. Water sample separation component; 31. Support frame; 32. First hydraulic cylinder; 33. Support plate; 34. First insertion plate; 35. First slot; 4. Fixed seat; 5. Sinking guide component; 51. Guide table; 52. Guide hole; 53. Top plate; 54. Guide rod; 55. Bottom plate; 56. Large-stroke electric push rod; 6. Sampling body inclination angle adjustment component; 61. Mounting plate; 62. Rotary cylinder; 63. Smooth rod; 64. Lifting table; 65. First liquid level sensor; 66. Water flow rate sensor; 67. Rotary reserved groove; 7. Flushing component; 71. Clean water storage cavity; 72. Second slot; 73. Second insertion plate; 74. Threaded cover; 8. Rubber pad; 9. Needle position adjustment component; 91. First waterproof motor; 92. First ball screw; 93. Moving frame; 94. Second waterproof motor; 95. Second ball screw; 96. Moving block; 97. Through groove; 10. Second hydraulic cylinder; 11. Fixed disk; 12. Fixed rod; 13. Limit disk; 14. Needle; 15. Liquid extraction pump; 16. Water pipe; 17. Sampling pipe; 18. Second hydraulic sensor. Detailed implementation manners

[0032] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0033] As Figures 1 to 4 shown, a water quality continuous automatic sampling device includes a sampling body 1. A sample storage through groove 2 with a rectangular cross-section is opened at the top of the sampling body 1, and a water sample separation component 3 is arranged on one outer wall of the sampling body 1. Among them, the water sample separation component 3 includes: a support frame 31 fixed to the outer wall of the sampling body 1 by bolts;

[0034] On the outer wall of the support frame 31 away from the sampling body 1, a first hydraulic cylinder 32 is fixed by bolts. The output end of the first hydraulic cylinder 32 is fixedly connected with a support plate 33. On the outer wall of the support plate 33 away from the output end of the first hydraulic cylinder 32, a first insertion plate 34 is fixed by bolts. A first slot 35 for the precise insertion of the first insertion plate 34 is opened on one outer wall of the sample storage through groove 2;

[0035] On one side outer wall of the sampling body 1 adjacent to the support frame 31, a fixing seat 4 is integrally formed, and a sinking guiding component 5 is arranged on the outer wall of the fixing seat 4 far away from the sampling body 1; during operation, in the prior art, due to the fluidity of the water in the river, the water flow velocities at different depths are different, and in addition, the microorganisms in the water have the characteristics of enrichment, the pollutants have the characteristics of local diffusion, and the heavy metals have the characteristics of mechanical migration. When the sampling device samples the water at one depth, it will gradually sample the water in different depth water layers. At this time, the water samples at other depths have flowed away with the flow of the water, resulting in the microorganisms, pollutants, and heavy metals having flowed out of the sampling area with the water flow, causing errors in the subsequent analysis results of the water quality sampling. The technical solution of the present invention can solve the above problems. The specific working method is as follows. First, the sampling device is moved and positioned to the location where the water quality sampling is required through a detection ship. The sinking guiding component 5 is vertically inserted into the river. Through the guiding of the sinking guiding component 5 to the sampling body 1, the sampling body 1 is quickly inserted into the river, and the sampling body 1 is moved to the required sampling depth range. The river water below the sample storage through groove 2 directly enters the sample storage through groove 2. At this time, the river water in the sample storage through groove 2 is in the original water layer distribution state in the river. Due to the blocking of the sample storage through groove 2, the water sample in the sample storage through groove 2 is difficult to flow with the flow of the water. At this time, control the output end of the first hydraulic cylinder 32 to drive the support plate 33 to move, and the first insertion plate 34 on the support plate 33 moves synchronously. The first insertion plate 34 passes through the first slot 35 and then inserts into the sample storage through groove 2. The first insertion plate 34 divides the water sample in the sample storage through groove 2 into layers. Through the mutual cooperation of a plurality of first insertion plates 34, the sample storage through groove 2 can be divided into a plurality of independent spaces. The water samples in the sample storage through groove 2 are divided in the vertical direction, avoiding the mixing of water samples at different depths caused by the up and down flow of the water samples. The water samples in the space are in a relatively sealed environment and are difficult to flow. In this way, when sampling the water samples at different depths subsequently, the collected water samples are sufficient to prove the water quality conditions at different depths of the river sampling point.

[0036] As a further implementation manner of the present invention, as Figure 1 and Figure 5, the sinking guiding assembly 5 includes: two guiding platforms 51 symmetrically fixed to the outer sidewall of the fixed seat 4 by bolts. Guide holes 52 are provided at the tops of the two guiding platforms 51. A guiding rod 54 penetrates through the inside of the guide hole 52. A top plate 53 is provided at the top end of the guiding rod 54, and a bottom plate 55 is provided at the bottom end of the guiding rod 54. During operation, through the guiding of the guiding rod 54 to the guiding platform 51, the guiding platform 51 moves on the guiding rod 54, which can enable the sampling body 1 to move along the guiding track of the guiding rod 54 through the guiding platform 51. The moving path of the sampling body 1 is limited, thus avoiding the problem that the moving track of the sampling body 1 deviates due to the shear force generated by the impact of the river water flow when directly inserted into the river, ensuring the accuracy of the insertion position of the sampling body 1, and further ensuring the accuracy of the water quality sampling point.

[0037] As a further embodiment of the present invention, as Figure 1 , Figure 5 , Figure 6 and Figure 8 shown, a sampling body inclination adjustment assembly 6 is provided at the outer side position of the top plate 53. Among them, the sampling body inclination adjustment assembly 6 includes: a mounting plate 61 provided at the outer side position of the top plate 53. A rotary cylinder 62 is fixedly connected to the central position of the outer sidewall of the mounting plate 61 close to the outer sidewall of the top plate 53 by bolts. The output end of the rotary cylinder 62 is fixedly connected to the top plate 53. A rotary reserved groove 67 for the top plate 53 to rotate is provided at the top of the mounting plate 61. A large-stroke electric push rod 56 is fixedly connected to the top of the mounting plate 61 by bolts. The output end of the large-stroke electric push rod 56 is fixedly connected to the sampling body 1. The top plate 53 is rotatably connected to the rotary reserved groove 67. During operation, by controlling the output end of the rotary cylinder 62 to drive the top plate 53 to rotate, the top plate 53 rotates in the rotary reserved groove 67. As the top plate 53 rotates, the guiding rod 54 at the bottom of the top plate 53 rotates synchronously. When the mounting plate 61 is installed horizontally on the side of the detection ship, after the guiding rod 54 rotates, the sinking guiding assembly 5 will be inclined to the horizontal plane and form a certain angle with the horizontal plane.

[0038] As a further embodiment of the present invention, as Figure 1 , Figure 8 and Figure 9As shown, a polished rod 63 is provided near the middle position between two guide rods 54 between the top plate 53 and the bottom plate 55. A lifting platform 64 is sleeved on the outer wall of the polished rod 63. A first liquid level sensor 65 and a water flow rate sensor 66 are fixedly connected to one outer wall of the lifting platform 64 by bolts. The first liquid level sensor 65 is located on one side of the water flow rate sensor 66. A towing rope is provided at the top of the lifting platform 64, and one end of the towing rope is held by an operator. During operation, the operator can retract and release the towing rope to move the lifting platform 64 on the polished rod 63, so that the lifting platform 64 rises and falls in the river. The first liquid level sensor 65 and the water flow rate sensor 66 on the lifting platform 64 can detect the water level depth and water flow rate in real time. When the sampling depth range of the sampling body 1 is determined, the water level depth of the water flow rate sensor 66 is accurately controlled through the water level detection ability of the first liquid level sensor 65. The water flow rate sensor 66 detects the flow rate at the highest water level point of the sampling depth of the sampling body 1 and detects the flow rate at the lowest water level point of the sampling depth of the sampling body 1. From this, we can obtain the upper and lower flow rate differences in the sampling depth range.

[0039] At this time, we can collect two lines using a two-dimensional coordinate system. The flow distance of the upper-layer water sample per unit time is a, and the flow distance of the lower-layer water sample per unit time is b. When one end of both a and b is located on the Y-axis, the distance between a and b is the difference c between the two detection points of the first liquid level sensor 65. Connect the other ends of a and b, and thus a line d inclined to the horizontal plane is obtained. And the angle between a and d can be obtained through the Pythagorean theorem.

[0040] The rotation angle of the output end of the rotary cylinder 62 is controlled by using the angle between a and d, so that the sinking guide assembly 5 coincides with the line d. The sinking guide assembly 5 forms an inclination angle with the horizontal plane. Through the guidance of the sinking guide assembly 5, the sampling body 1 is quickly inserted into the river obliquely. The sampling body 1 can collect water samples at different depths in the vertical direction of the sampling point to the greatest extent when inserted, so that the subsequent sample detection results are more accurate, avoiding chemical pollutants discharged into the river. After the chemical pollutants enter the water, they diffuse. But with the flow of the water, the chemical pollutants diffuse and sink while flowing with the water. When sampling at different depths, the upper-layer water quality collected first contains chemical pollutants. When sampling gradually downward, due to the influence of the flow rate, the pollutants in the lower layer may have flowed to a distance, resulting in the water quality of the subsequent sampling not containing chemical pollutants, which will cause problems with sampling deviation.

[0041] As a further implementation manner of the present invention, as Figures 1 to 4As shown in the figure, a flushing component 7 is arranged inside the sampling body 1. The flushing component 7 includes a clean water storage cavity 71 opened at a position inside the sampling body 1 near one side of the sample storage through groove 2. The inside of the clean water storage cavity 71 is filled with clean water. A second slot 72 is opened at a position on one outer wall of the sampling body 1 near one side of the clean water storage cavity 71. A second plug board 73 is fixedly connected by bolts at a position on one outer wall of the support board 33 near one side of the first plug board 34. The second plug board 73 can be precisely inserted into the second slot 72. A threaded cover 74 is screwed on the top of the sampling body 1 at a position above the clean water storage cavity 71. During operation, the clean water used to clean the inside of the needle 14, the liquid extraction pump 15, the water pipe 16, and the sampling pipe 17 can be stored through the clean water storage cavity 71. Thus, after the needle 14 collects the water sample at each depth, self-cleaning can be carried out. By using the flow of clean water in the needle 14, the water pipe 16, the liquid extraction pump 15, and the sampling pipe 17 in sequence, the clean water can wash away the residual water sample collected last time. The operator aligns one end of the sampling pipe 17 with the river, and the water during the flushing process is directly discharged into the river.

[0042] As a further embodiment of the present invention, as Figures 1 to 2 shown, rubber pads 8 are embedded on one outer wall of the sampling body 1 near one side of the sample storage through groove 2 and the clean water storage cavity 71. One side of the rubber pad 8 is communicated with the internal spaces of the sample storage through groove 2 and the clean water storage cavity 71. The rubber pad 8 is made of butyl rubber, and butyl rubber has good cleanliness, chemical stability, airtightness, and biological properties. During operation, by using the rubber pad 8 made of butyl rubber, it can ensure good airtightness after the needle 14 is inserted and removed from the rubber pad 8, thereby preventing the water in the river from flowing into the sample storage through groove 2 and avoiding interference with the water sample in the sample storage through groove 2. When the airtightness of the rubber pad 8 decreases after the needle 14 is inserted and removed multiple times, the rubber pad 8 can be directly replaced, and the replacement cost is low, which can ensure the service life of the sampling body 1.

[0043] As a further embodiment of the present invention, as Figure 1 、 Figure 6 and Figure 7As shown in the figure, a needle position adjustment assembly 9 is provided on the outer wall of the fixed seat 4. Among them, the needle position adjustment assembly 9 includes: a first waterproof motor 91 fixed to the top of the fixed seat 4 by bolts. The output end of the first waterproof motor 91 is fixedly connected to a first ball screw 92. A nut seat on the first ball screw 92 is fixedly connected to a moving frame 93 by a nut. A second waterproof motor 94 is fixedly connected to the outer wall of one side of the moving frame 93 by bolts. The output end of the second waterproof motor 94 is fixedly connected to a second ball screw 95. A nut seat on the second ball screw 95 is fixedly connected to a moving block 96 by a nut. A through groove 97 is formed at a position close to the outside of the moving block 96 on the outer wall of one side of the moving frame 93, and the cross section of the moving frame 93 is an L-shaped structure. A second hydraulic cylinder 10 is fixedly connected to the center of the outer wall of one side of the moving block 96 away from the fixed seat 4 by bolts. The output end of the second hydraulic cylinder 10 is fixedly connected to a fixed disk 11. A fixed rod 12 is welded to the outer wall of the fixed disk 11 away from the output end of the second hydraulic cylinder 10. A limiting disk 13 is welded to one end of the fixed rod 12 away from the fixed disk 11. A needle 14 is embedded in the middle position of one side outer wall of the limiting disk 13. A second hydraulic sensor 18 is embedded at a horizontal position close to the needle 14 on the outer wall of one side of the moving frame 93;During operation, the output end of the first waterproof motor 91 is controlled to drive the first ball screw 92 to rotate. The moving frame 93 on the first ball screw 92 rises and falls in the river, and the second hydraulic sensor 18 on the moving frame 93 rises and falls synchronously. The second hydraulic sensor 18 detects the water level depth at this time, so as to control the sampling depth of the water sample. The output end of the second waterproof motor 94 is controlled to drive the second ball screw 95 to rotate, and the moving block 96 on the second ball screw 95 moves in the through groove 97. The second hydraulic cylinder 10 on the moving block 96 moves synchronously, so as to control the position of the needle 14, facilitate the position switching of the needle 14 between the sample storage through groove 2 and the clean water storage cavity 71, and thus realize self-cleaning after sampling a water sample at a certain depth. Specifically: during water quality sampling, the output end of the second hydraulic cylinder 10 is controlled to drive the fixed disk 11, the fixed rod 12, the limit disk 13 and the needle 14 to move. The needle 14 passes through the rubber pad 8 on one side of the sample storage through groove 2 and then inserts into the inside of the sample storage through groove 2. After the liquid extraction pump 15 is powered on and operates, the water sample in the sample storage through groove 2 is sequentially extracted through the needle 14, the water pipe 16, the liquid extraction pump 15 and the sampling pipe 17. The sampling pipe 17 discharges the water sample into a pre-prepared test tube. By inserting the needle 14 into the spaces at different depths inside the sample storage through groove 2, continuous automatic sampling of the water sample can be realized. After the sampling is completed, the needle 14 moves to one side of the clean water storage cavity 71. The needle 14 passes through the rubber pad 8 on one side of the clean water storage cavity 71 and then inserts into the inside of the clean water storage cavity 71. The clean water inside the clean water storage cavity 71 is extracted by the needle 14. The clean water sequentially passes through the needle 14, the water pipe 16, the liquid extraction pump 15 and the sampling pipe 17. As the clean water flows, the clean water flushes away the residual water samples inside the needle 14, the water pipe 16, the liquid extraction pump 15 and the sampling pipe 17, realizing the cleaning of the needle 14, the water pipe 16, the liquid extraction pump 15 and the sampling pipe 17, and avoiding the mutual interference of water samples at different depths during sample output and affecting the results of subsequent detections.;

[0044] As a further embodiment of the present invention, as Figure 1 shown, a liquid extraction pump 15 is provided at one side position of the mounting plate 61. A water pipe 16 is provided between the input end of the liquid extraction pump 15 and one end of the needle 14, and a sampling pipe 17 is provided at the output end of the liquid extraction pump 15; during operation, the liquid extraction pump 15 is installed on the detection ship, and the negative pressure generated by the operation of the liquid extraction pump 15 can extract the water sample or clean water at one end of the needle 14, realizing the sampling and self-cleaning of the water sample.

[0045] The foregoing has shown and described 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. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous automatic water quality sampling device, comprising a sampling body, characterized in that, A sample storage through - groove with a rectangular cross - section is opened at the top of the sampling body, and a water sample separation component is arranged on one outer wall of the sampling body. Among them, the water sample separation component includes: a support frame fixed to the outer wall of the sampling body by bolts; On the outer wall of the support frame away from the sampling body, a first hydraulic cylinder is fixed by bolts. The output end of the first hydraulic cylinder is fixedly connected with a support plate. On the outer wall of the support plate away from the output end of the first hydraulic cylinder, a first insertion plate is fixed by bolts. A first insertion slot for precise insertion of the first insertion plate is opened on one outer wall of the sample storage through - groove; A fixed seat is integrally formed on one outer wall of the sampling body adjacent to the support frame. A sinking guiding component is arranged on the outer wall of the fixed seat away from the sampling body; The sinking guiding component includes a top plate located on the fixed seat. A sampling body inclination adjustment component is arranged at the outer position of the top plate. Among them, the sampling body inclination adjustment component includes: a mounting plate arranged at the outer position of the top plate. A rotary cylinder is fixedly connected to the middle position of the outer wall of the mounting plate near the outer wall of the top plate by bolts. The output end of the rotary cylinder is fixedly connected to the top plate. A rotary reserved slot for the rotation of the top plate is opened on the top of the mounting plate. And a large - stroke electric push rod is fixedly connected to the top of the mounting plate by bolts. The output end of the large - stroke electric push rod is fixedly connected to the sampling body. The top plate is rotatably connected to the rotary reserved slot; It also includes a needle arranged beside the fixed seat. A liquid - extraction pump is arranged at one position of the mounting plate. A water pipe is arranged between the input end of the liquid - extraction pump and one end of the needle. And a sampling pipe is arranged at the output end of the liquid - extraction pump.

2. The water quality continuous automatic sampling device according to claim 1, characterized in that, The sinking guiding component includes: two guiding platforms symmetrically fixed to the outer wall of the fixed seat by bolts. Guide holes are opened at the tops of the two guiding platforms. A guide rod penetrates through the inside of the guide holes. The top end of the guide rod is provided with a top plate, and the bottom end of the guide rod is provided with a bottom plate.

3. The water quality continuous automatic sampling device according to claim 2, characterized in that, A smooth rod is arranged between the top plate and the bottom plate near the middle position of the two guide rods. A lifting platform is sleeved on the outer wall of the smooth rod. A first liquid - level sensor and a water - flow velocity sensor are fixedly connected to one outer wall of the lifting platform by bolts. The first liquid - level sensor is located on one side of the water - flow velocity sensor. A traction rope is arranged at the top of the lifting platform. One end of the traction rope is held by an operator.

4. A continuous automatic water quality sampling device according to claim 1, characterized in that, A flushing component is arranged inside the sampling body. The flushing component includes a clean water storage cavity opened at a position inside the sampling body near the sample storage through - groove. Clean water is filled in the clean water storage cavity. A second insertion slot is opened on one outer wall of the sampling body near the clean water storage cavity. A second insertion plate is fixedly connected to one outer wall of the support plate near the first insertion plate by bolts. The second insertion plate can be precisely inserted through and into the second insertion slot. A threaded cover is screwed on the top of the sampling body near the upper position of the clean water storage cavity; 5. The continuous automatic water quality sampling device according to claim 4, characterized in that, Rubber pads are embedded on one outer wall of the sampling body near the sample storage through - groove and the clean water storage cavity. One side of the rubber pad is communicated with the internal spaces of the sample storage through - groove and the clean water storage cavity. The rubber pad is made of butyl rubber.

6. The water quality continuous automatic sampling device according to claim 1, characterized in that, A needle position adjustment assembly is provided on the outer side wall of the fixed seat. Among them, the needle position adjustment assembly includes: a first waterproof motor fixed to the top of the fixed seat by bolts, the output end of the first waterproof motor is fixedly connected with a first ball screw, a nut seat on the first ball screw is fixedly connected with a moving frame by a nut, a second waterproof motor is fixedly connected to the outer side wall of one side of the moving frame by bolts, the output end of the second waterproof motor is fixedly connected with a second ball screw, a nut seat on the second ball screw is fixedly connected with a moving block by a nut, a through groove is formed at a position close to the outer side of the moving block on the outer side wall of one side of the moving frame, and the cross section of the moving frame is an L-shaped structure.

7. The water quality continuous automatic sampling device according to claim 6, characterized in that, A second hydraulic cylinder is fixedly connected to the central position of the outer side wall of the moving block away from the fixed seat by bolts, the output end of the second hydraulic cylinder is fixedly connected with a fixed disk, a fixed rod is welded to the outer side wall of the fixed disk away from the output end of the second hydraulic cylinder, a limit disk is welded to the end of the fixed rod away from the fixed disk, and a needle is embedded at the middle position of the outer side wall of the limit disk.

8. A continuous automatic water quality sampling device according to claim 6, characterized in that, A second hydraulic sensor is embedded at a horizontal position close to the needle on the outer side wall of the moving frame.

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