Environmental monitoring instrument capable of regularly sampling and detecting

Abstract

The invention relates to the technical field of environment monitoring, in particular to an environment monitoring instrument capable of regularly sampling and detecting, which is characterized in that a protection box is arranged on the upper side of a concentric-square-shaped floating plate through a concentric-square-shaped frame, a conveying mechanism is arranged in the protection box, a sampling mechanism is arranged on the protection box and the conveying mechanism together, and an extraction mechanism is arranged on the sampling mechanism and the concentric-square-shaped frame together; through cooperation of the conveying mechanism and the sampling mechanism, timing sampling can be carried out on the specific depth of a monitored water area in a continuous time period, and synchronous stratified sampling can be carried out on different water layers in the same area in a short time period; meanwhile, the sampling device can avoid cross mixing of samples at all depths due to factors such as water disturbance or equipment movement through physical isolation; through cooperation of the conveying mechanism, the sampling mechanism and the extraction mechanism, residual substances in a sampling container can be automatically cleaned before sampling each time, and meanwhile, samples in the container can be automatically extracted and conveyed.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental monitoring, and particularly to an environmental monitoring instrument capable of regularly sampling and detecting. Background Technique

[0002] Environmental monitoring instruments are devices used for sampling and measuring environmental quality parameters, and are commonly used for regular sampling and detection of water quality in different scenarios. By regularly collecting and analyzing water samples at the same depth at different times or water samples at different depths at the same time through environmental monitoring instruments, the dynamic change trend of water quality in the same area can be grasped and water pollution accidents can be prevented.

[0003] In the prior art, water quality sampling and monitoring are generally carried out through a buoy water quality monitoring station or an on-line water quality monitor in a monitoring base. Among them, the buoy water quality monitoring station floats on the surface of the monitoring water area to continuously sample and monitor the water quality in the monitoring water area, while the on-line water quality monitor usually monitors the water body in the adjacent water area, and the sampling depth can be adjusted through a supporting external sampling system.

[0004] However, the traditional method of regularly sampling and monitoring water quality has the following problems: 1. In the prior art, on-line water quality monitors are usually fixedly installed inside a monitoring base station, and their monitoring range is limited to a specific water area adjacent to the base station. When it is necessary to expand the monitoring area or adjust the monitoring point, such devices cannot be flexibly transferred to other water areas, and can only rely on the external sampling system to adjust the local sampling depth, but cannot solve the problem of the fixed monitoring coverage, so it is difficult to meet the dynamic monitoring requirements of a large range and multiple scenarios; 2. In the prior art, although the buoy water quality monitoring station can flexibly adjust the monitoring water area, it is difficult to synchronously and layeredly sample different depths of the water body in the same area in a short time, so it is difficult to comprehensively and accurately monitor the water quality of different depths in this area in a short period of time. Moreover, when the buoy water quality monitoring station covers different depth water layers by adjusting the sampling device, sampling devices such as pump pipes may also cause cross-mixing of samples at different depths due to water body flow or equipment movement, thereby affecting the independence of the detection results. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solution: An environmental monitoring instrument capable of regularly sampling and detecting, including a circular floating plate, a protective box is arranged on the upper side of the circular floating plate through a circular frame, a conveying mechanism is arranged inside the protective box, a sampling mechanism is jointly arranged on the protective box and the conveying mechanism, and an extraction mechanism is jointly arranged on the sampling mechanism and the circular frame.

[0006] The conveying mechanism includes a plurality of sliding seats uniformly and fixedly arranged on the lower surface inside the protective box from left to right and a differential drive part corresponding to the sliding seats. An equal-difference lifting part that cooperates with the corresponding differential drive part to lift is arranged on the sliding seat. An equal-depth lifting part for reciprocating lifting is arranged on the equal-difference lifting part. A timing drive part for driving the corresponding equal-depth lifting part is arranged on the front side of the sliding seat.

[0007] The sampling mechanism includes a cleaning input part for inputting cleaning liquid jointly arranged on the protective box and the equal-depth lifting part. A limit communication part for corresponding depth sampling in cooperation with the equal-depth lifting part and the equal-difference lifting part respectively is arranged on the lower side of the equal-depth lifting part. An automatic sampling part for adaptive sampling in cooperation with the cleaning input part is arranged on the limit communication part.

[0008] The extraction mechanism includes a docking outflow part arranged on the automatic sampling part. A docking extraction part for extracting samples or cleaning liquid in the automatic sampling part in cooperation with the docking outflow part is arranged on the return frame.

[0009] Preferably, the differential drive part includes a fixed seat fixedly arranged on the lower surface inside the protective box and on the right side of the corresponding sliding seat. A motor is fixedly arranged on the rear side of the fixed seat. A first gear is fixedly arranged on the driving end of the motor. The diameters of the uniformly distributed first gears increase in equal proportion from left to right in sequence.

[0010] Preferably, the equal-difference lifting part includes a convex chute that penetrates up and down jointly opened on the sliding seat and the lower side of the protective box. A lifting sleeve that moves up and down is slidably arranged in the convex chute, and a first rack installed on the right side of the lifting sleeve is meshed and connected with the corresponding first gear. A through groove that penetrates up and down is opened in the lifting sleeve. The through groove is composed of a rotating groove and a rectangular chute distributed up and down. A clamping column that moves back and forth is elastically slidably arranged at the rear side inside the rotating groove through a first spring.

[0011] Preferably, the equal-depth lifting part includes a driving sleeve rotatably connected in the rotating groove. A second gear is installed at the upper end of the driving sleeve. A driven ring is fixedly arranged at the lower end of the driving sleeve. A positioning groove for temporarily positioning in cooperation with the clamping column is opened at the rear side of the driven ring. A driving column is fixedly arranged at the rear side inside the driven ring. A cylindrical cam that moves up and down is slidably arranged in the driving sleeve. A driven chute that slidably cooperates with the driving column is opened on the outer surface of the cylindrical cam. The driven chute is obliquely distributed and connected end to end. A connecting groove that penetrates up and down is opened inside the cylindrical cam.

[0012] Preferably, the timing drive part includes a guide rail fixedly arranged on the upper side of the lower surface inside the protective box through an L-shaped bracket. Electric sliders that move left and right are symmetrically slidably arranged on the guide rail from left to right. A second rack that is meshed and driven with the second gear is fixedly arranged at the rear side of the left and right symmetric electric sliders together.

[0013] Preferably, the cleaning input part includes a first connecting pipe fixedly arranged at the upper end of the cylindrical cam and communicating with the connecting groove up and down. A sealing plug is inserted into the upper end of the first connecting pipe. An injection port penetrating up and down is formed in the sealing plug. A first convex ring is fixedly arranged at the upper end of the sealing plug. A sliding pipe fixedly arranged on the upper side of the sealing plug and slidably connected with the upper side of the protection box and communicating with each other up and down is provided. The lengths of the uniformly distributed sliding pipes increase in equal proportion from left to right in sequence. A second convex ring is fixedly arranged at the upper end of the sliding pipe. An injection pipe communicating with each other up and down is installed on the upper side of the sliding pipe.

[0014] Preferably, the limiting and connecting part includes a rectangular connecting head fixedly arranged at the lower end of the cylindrical cam and communicating with the connecting groove up and down. The rectangular connecting head is slidably connected with the rectangular sliding groove. A second connecting pipe communicating with each other up and down is fixedly arranged on the lower side of the rectangular connecting head. A sampling bottle with an upper end communicated is fixedly arranged at the lower end of the second connecting pipe.

[0015] Preferably, the automatic sampling part includes a water inlet penetrating up and down and formed on the lower side of the sampling bottle. A one-way valve seat communicated with the water inlet is fixedly arranged on the lower surface inside the sampling bottle. A sealing valve plate moving up and down is elastically slidably arranged in the one-way valve seat through a second spring. A plurality of through holes communicating with the inside and outside are circumferentially and uniformly formed in the one-way valve seat.

[0016] Preferably, the docking and outflow part includes water outlets symmetrically formed on the front and back of the sampling bottle and communicating with the inside and outside. Connecting valve seats communicated with the corresponding water outlets are symmetrically installed on the front and back of the sampling bottle. Constant pressure grooves communicated with the outside are symmetrically formed on the left and right of the connecting valve seats. Wedge-shaped valve blocks elastically slidably connected with the corresponding constant pressure grooves through spring rods are symmetrically slidably arranged on the left and right in the connecting valve seats. The opposite ends of the symmetrically arranged wedge-shaped valve blocks on the left and right are both inclined surfaces.

[0017] Preferably, the docking and extraction part includes air cylinders symmetrically installed on the inner side of the loop-shaped frame. A mounting plate moving back and forth is fixedly arranged at the telescopic end of the air cylinder. A plurality of docking insertion pipes corresponding to the sampling bottles and slidably connected with the loop-shaped frame are uniformly installed on the left and right of the mounting plate. The opposite ends of the symmetrically arranged docking insertion pipes on the front and back are both inclined surfaces for pressing and cooperating with the inclined surfaces of the corresponding wedge-shaped valve blocks.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the cooperation of the conveying mechanism and the sampling mechanism, the present invention can not only realize the regular sampling of the same depth of the monitored water area within a continuous time period, but also realize the synchronous stratified sampling of different water layers in the same area in a short time, so as to comprehensively and accurately monitor the water quality of this area. At the same time, the sampling device can avoid the cross-mixing of samples at each depth caused by factors such as water body disturbance or equipment movement through physical isolation, so as to ensure the independence and accuracy of the detection data. In addition, the present invention can realize the flexible adjustment of the monitored water area through the floating structure.

[0019] 2. Through the cooperation of the conveying mechanism, the sampling mechanism and the extraction mechanism, the present invention can automatically clean the residual substances in the sampling container before each sampling, so as to avoid cross-contamination caused by the residues of water samples at different times or water layer samples at different depths in the container, thereby ensuring the independence and effectiveness of the sampled samples. At the same time, it can also realize the automatic extraction and conveying of the samples taken in the container, which not only reduces the manual intervention error but also improves the synchronous processing efficiency of multi-depth samples. Brief Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the present invention.

[0021] Figure 2 It is a partial sectional schematic diagram of part of the structure of the present invention.

[0022] Figure 3 It is a partial sectional schematic diagram of part of the structure of the conveying mechanism.

[0023] Figure 4 It is a partial sectional schematic diagram of part of the structure of the equal-depth lifting part.

[0024] Figure 5 It is Figure 4 The enlarged schematic diagram at position A in

[0025] Figure 6 It is a partial sectional schematic diagram of part of the structure of the sampling mechanism.

[0026] Figure 7 It is a partial sectional schematic diagram of part of the structure of the extraction mechanism.

[0027] In the figure: 1. U-shaped floating plate; 2. Protective box; 3. Conveying mechanism; 31. Slide seat; 32. Differential drive part; 321. Fixed seat; 322. Motor; 323. Gear 1; 33. Equal-difference lifting part; 331. Lifting sleeve; 332. Rack 1; 333. Clamping column; 34. Equal-depth lifting part; 341. Driving sleeve; 342. Gear 2; 343. Driving column; 344. Cylindrical cam; 35. Timing drive part; 351. Guide rail; 352. Electric slider; 353. Rack 2; 4. Sampling mechanism; 41. Cleaning input part; 411. Connecting pipe 1; 412. Sealing plug; 413. Sliding pipe; 42. Limit connecting part; 421. Rectangular connecting head; 422. Connecting pipe 2; 423. Sampling bottle; 43. Automatic sampling part; 431. Check valve seat; 432. Sealing valve plate; 5. Extraction mechanism; 51. Docking outflow part; 511. Connecting valve seat; 512. Wedge-shaped valve block; 52. Docking extraction part; 521. Cylinder; 522. Docking insertion tube. Detailed Embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figure 1 and Figure 2 , an environmental monitoring instrument capable of regularly sampling and detecting, including a U-shaped floating plate 1. A protective box 2 is arranged on the upper side of the U-shaped floating plate 1 through a U-shaped frame. A conveying mechanism 3 is arranged in the protective box 2. A sampling mechanism 4 is jointly arranged on the protective box 2 and the conveying mechanism 3. An extraction mechanism 5 is jointly arranged on the sampling mechanism 4 and the U-shaped frame.

[0030] Please refer to Figure 2 , the conveying mechanism 3 includes a plurality of sliding seats 31 uniformly and fixedly arranged on the lower surface inside the protective box 2 from left to right and a differential drive part 32 corresponding to the sliding seats 31. An equal-difference lifting part 33 that moves up and down a corresponding distance in cooperation with the corresponding differential drive part 32 is arranged on the sliding seats 31. An equal-depth lifting part 34 for reciprocating up and down movement at a fixed distance is arranged on the equal-difference lifting part 33. A timing drive part 35 for timing driving the corresponding equal-depth lifting part 34 is arranged on the front side of the sliding seats 31.

[0031] Please refer to Figure 2 , the differential drive part 32 includes a fixed seat 321 fixedly arranged on the lower surface inside the protective box 2 and on the right side of the corresponding sliding seat 31. A motor 322 is fixedly arranged on the rear side of the fixed seat 321. A first gear 323 is fixedly arranged on the driving end of the motor 322. The diameters of the uniformly distributed first gears 323 increase in equal proportion from left to right in sequence.

[0032] Please refer to Figure 2 , Figure 3 and Figure 5 , the equal-difference lifting part 33 includes a convex chute that penetrates up and down and is jointly opened on the sliding seats 31 and the lower side of the protective box 2. A lifting sleeve 331 that moves up and down is slidably arranged in the convex chute. A first rack 332 is installed on the right side of the lifting sleeve 331. The first rack 332 is meshed and connected with the corresponding first gear 323. A through slot that penetrates up and down is opened in the lifting sleeve 331. The through slot is composed of a rotating slot and a rectangular chute distributed up and down. A clamping column 333 that moves back and forth is elastically slidably arranged at the rear side inside the rotating slot through a first spring.

[0033] When simultaneously driving the corresponding first gears 323 to rotate in a fixed direction through the respective motors 322 (such as Figure 2When the number of turns is the same (as shown by the arrow), each first gear 323 drives the lifting sleeve 331 to move downward a certain distance along the corresponding convex chute through the meshing drive with the corresponding first rack 332. Since the diameters of the first gears 323 increase in equal proportion from left to right, and on the premise of rotating the same number of turns, the larger the diameter of the first gear 323, the longer the distance that the corresponding first rack 332 descends. Therefore, the distances that the lifting sleeves 331 descend at this time increase in equal proportion from left to right.

[0034] It should be noted that the distances that the lifting sleeves 331 move downward can be monitored by distance sensors. Specifically, the distance sensors are installed on the corresponding sliding seats 31. A protrusion is provided on the outer wall of the lifting sleeve 331. The optical signal or wave signal emitted by the distance sensor is reflected back after encountering the protrusion. The distance from the protrusion to the distance sensor is obtained by multiplying the time difference between the signal being emitted and received by the signal transmission speed and dividing the result by two. The displacement change situation is obtained by taking the difference between the distance values monitored at different time points.

[0035] Please refer to Figure 3 、 Figure 4 and Figure 5 As shown in

[0036] Please refer to Figure 2 and Figure 3 As shown in

[0037] When each lifting sleeve 331 is at the highest point, the electric slider 352 drives the rack 2 353 to move from the left end of the guide rail 351 to the right end, and the rack 2 353 then meshes with each gear 2 342 in turn, and drives the gear 2 342 to rotate one circle, and the gear 2 342 then drives the driving sleeve 341 and the driven ring at the lower end of the driving sleeve 341 to rotate synchronously, and the clamping column 333 in the lifting sleeve 331 then disengages from the corresponding positioning groove, and the driven ring then drives the driving column 343 to rotate synchronously, and the driving column 343 then slides with the driven sliding groove on the surface of the cylindrical cam 344 until the driven ring drives the driving column 343 to rotate one circle, and the driving column 343 then drives the cylindrical cam 344 to complete a certain distance of up and down reciprocating movement. At this time, under the action of spring 1, the clamping column 333 is again clamped into the positioning groove, so that the driven ring cannot rotate without external force, and the cylindrical cam 344 cannot move up and down without external force.

[0038] See also Figure 2 and Figure 6 The sampling mechanism 4 includes a cleaning input part 41 for inputting cleaning liquid, which is jointly arranged on the protection box 2 and the equal-depth lifting part 34. The lower side of the equal-depth lifting part 34 is provided with a limiting connecting part 42 for cooperating with the equal-depth lifting part 34 and the arithmetic lifting part 33 to perform sampling at the same depth and sampling at different depths respectively. The limiting connecting part 42 is provided with an automatic sampling part 43 for cooperating with the cleaning input part 41 to perform adaptive sampling.

[0039] See also Figure 2 and Figure 4 The cleaning input part 41 includes a connecting tube 411 fixedly arranged on the upper end of the cylindrical cam 344 and connected with the connecting groove up and down, a sealing plug 412 is inserted into the upper end of the connecting tube 411, and an injection port that passes through up and down is opened in the sealing plug 412, a convex ring 1 is fixedly arranged on the upper end of the sealing plug 412, and a sliding tube 413 that is slidably connected to the upper side of the protective box 2 and connected up and down is fixedly arranged on the upper side of the sealing plug 412, and the length of the evenly distributed sliding tubes 413 increases proportionally from left to right, a convex ring 2 is fixedly arranged on the upper end of the sliding tube 413, and an injection tube that is connected up and down is installed on the upper side of the sliding tube 413, and the injection tube is in a closed state.

[0040] When the corresponding first gears 323 are driven by the respective motors 322 to rotate synchronously and directionally, the respective lifting sleeves 331 drive the driving sleeve 341 and the cylindrical cam 344 inside the driving sleeve 341 to move downward synchronously by a corresponding distance along the convex chute. Thereby, the cylindrical cam 344 drives the corresponding first connecting pipe 411 and the corresponding sliding pipe 413 to move downward by the same distance until the second convex ring at the upper end of the sliding pipe 413 contacts the upper surface of the protective box 2 and cannot move further under the resistance of the protective box 2. Consequently, the sliding pipe 413 and the corresponding sealing plug 412 cannot move further. As the cylindrical cam 344 and the first connecting pipe 411 continue to move downward, until the sealing plug 412 hermetically inserted at the upper end of the corresponding first connecting pipe 411 is completely disengaged. At this time, the respective first gears 323 have rotated the same number of turns synchronously and just stopped, and the lifting sleeves 331 stop moving downward synchronously. Moreover, the descending distances of the respective lifting sleeves 331 increase in equal proportion from left to right. At the same time, since the lengths of the respective sliding pipes 413 also increase in equal proportion from left to right, when the respective motors 322 drive the corresponding first gears 323 to rotate synchronously and directionally by the same number of turns, the second convex rings at the upper ends of the respective sliding pipes 413 also contact the protective box 2 simultaneously, and the respective sealing plugs 412 are disengaged from the upper ends of the corresponding first connecting pipes 411 synchronously; when the respective lifting sleeves 331 move upward to reset to the highest position, under the extrusion of the upper end of the first connecting pipe 411 and the upper surface inside the protective box 2, the respective sealing plugs 412 are again tightly inserted into the upper ends of the corresponding first connecting pipes 411 completely.

[0041] When the second gear 342 is driven by the second rack 353 to rotate one circle, the second gear 342 first drives the corresponding cylindrical cam 344 and the first connecting pipe 411 to move downward through the corresponding driving column 343 until the first convex ring at the upper end of the sealing plug 412 contacts the upper side of the driving sleeve 341, causing the sealing plug 412 to be completely disengaged from the upper end of the corresponding first connecting pipe 411. At this time, the cylindrical cam 344 just moves to the lowest point under the drive of the second rack 353; after the second gear 342 rotates one circle under the drive of the second rack 353, the driving column 343 drives the cylindrical cam 344 and the first connecting pipe 411 to move back to the initial position, and the sealing plug 412 is hermetically inserted into the upper end of the corresponding first connecting pipe 411 again under the extrusion of the upper end of the first connecting pipe 411 and the upper surface inside the protective box 2.

[0042] Please refer to Figure 2 、 Figure 3 and Figure 4 As shown in, the limiting and connecting part 42 includes a rectangular connecting head 421 fixedly arranged at the lower end of the cylindrical cam 344 and communicating with the connecting groove up and down. The rectangular connecting head 421 is slidably connected with the rectangular chute. Among them, the cylindrical cam 344 can also slide up and down along the rectangular chute. A second connecting pipe 422 communicating up and down is fixedly arranged at the lower side of the rectangular connecting head 421, and a sampling bottle 423 with an upper end communicated is fixedly arranged at the lower end of the second connecting pipe 422.

[0043] When the corresponding lifting sleeves 331 and cylindrical cams 344 are driven by the respective motors 322 to move downward or upward by a corresponding distance, each cylindrical cam 344 drives the corresponding sampling bottle 423 to move downward synchronously by the same distance through the second communicating pipe 422 under the rectangular connecting head 421; when the cylindrical cam 344 is driven to move up and down by the second rack 353, the rectangular connecting head 421 drives the second communicating pipe 422 and the sampling bottle 423 to move up and down synchronously by the same distance along the corresponding rectangular sliding groove. Among them, the rectangular connecting head 421 can ensure that during the process of the driving column 343 driving the cylindrical cam 344, the cylindrical cam 344 will not rotate synchronously with the driving column 343 and cannot move up and down.

[0044] Please refer to Figure 6 As shown in the figure, the automatic sampling part 43 includes a water inlet opened on the lower side of the sampling bottle 423 and penetrating up and down. A one-way valve seat 431 communicated with the water inlet is fixedly arranged on the lower surface inside the sampling bottle 423. A sealing valve plate 432 that moves up and down is elastically slidably arranged in the one-way valve seat 431 through a second spring. A plurality of through holes communicating inside and outside are circumferentially and evenly opened on the one-way valve seat 431.

[0045] When it is necessary to synchronously sample different depths of the water body in the same area in a short time, the respective motors 322 are used to drive the corresponding first gears 323 to rotate synchronously in the same direction by the same number of turns. The respective lifting sleeves 331 and cylindrical cams 344 drive the corresponding sampling bottles 423 to move downward by a corresponding distance. The respective sampling bottles 423 respectively enter the corresponding depth water layers of the water body in the same area downward. And the depths of the respective sampling bottles 423 increase in equal proportion from left to right. At this time, the respective sealing plugs 412 are just synchronously removed. Under the action of the water pressure, the water flow presses the sealing valve plates 432 in the respective one-way valve seats 431 upward and stably flows into the corresponding sampling bottles 423 through the through holes on the respective one-way valve seats 431 until the internal pressure of the sampling bottle 423 and under the synergistic elastic action of the second spring, the sealing valve plate 432 moves downward again to seal the corresponding through holes and the water inlet, thereby completing the targeted sampling of different depth water layers. Among them, during the downward movement of the sampling bottle 423, due to the sealing of the upper end of the first communicating pipe 411 by the sealing plug 412, the water flow cannot enter the respective sampling bottles 423 from the one-way valve seat 431 under the action of the pressure.

[0046] When timing sampling is to be carried out at the same depth of the water body in the same area, the electric slider 352 drives the second rack 353 to move intermittently from the left end to the right end of the guide rail 351, so that the second rack 353 drives each second gear 342 to rotate intermittently half a turn in sequence, so that the cylindrical cam 344 drives the corresponding sampling bottle 423 to move downward the same distance and stay briefly in sequence, and then the sampling bottle 423 is gradually reset to the initial position by the intermittent drive of the second rack 353 until each sampling bottle 423 completes sampling of the water layer at the same depth of the water body at different time periods.

[0047] The above operation method can not only realize timing sampling at the same depth of the monitored water area within a continuous time period, but also realize synchronous stratified sampling of different water layers in the same area in a short time, so as to comprehensively and accurately monitor the water quality of this area. At the same time, the sampling bottle 423 can avoid cross-mixing of samples at each depth caused by factors such as water body disturbance or equipment movement through physical isolation, so as to ensure the independence and accuracy of the detection data. In addition, the flexible adjustment of the monitored water area can be realized through the loop-shaped floating plate 1.

[0048] Please refer to Figure 2 , the extraction mechanism 5 includes a docking outflow part 51 arranged on the automatic sampling part 43, and a docking extraction part 52 for cooperating with the docking outflow part 51 to extract samples or cleaning liquid in the automatic sampling part 43 is arranged on the loop-shaped frame.

[0049] Please refer to Figure 2 and Figure 6 , the docking outflow part 51 includes water outlets that are symmetrically opened front and back on the sampling bottle 423 and are internally and externally connected. Connecting valve seats 511 that are symmetrically installed front and back on the sampling bottle 423 and are connected to the corresponding water outlets front and back are provided. Constant pressure grooves that are symmetrically opened left and right and are connected to the outside are provided on the connecting valve seats 511. Wedge-shaped valve blocks 512 that are symmetrically slidably arranged left and right in the connecting valve seats 511 and are elastically slidably connected to the corresponding constant pressure grooves through spring rods are provided. The opposite ends of the left and right symmetric wedge-shaped valve blocks 512 are both inclined surfaces.

[0050] Please refer to Figure 2 , Figure 6 and Figure 7 , the docking extraction part 52 includes air cylinders 521 that are symmetrically installed front and back on the inner side of the loop-shaped frame. The telescopic ends of the air cylinders 521 are fixedly provided with mounting plates that move back and forth. A plurality of docking insertion tubes 522 that correspond to the sampling bottles 423 and are slidably connected to the loop-shaped frame are evenly installed left and right on the mounting plates. The opposite ends of the front and back symmetric docking insertion tubes 522 are both inclined surfaces that are press-fitted with the inclined surfaces of the corresponding wedge-shaped valve blocks 512. The opposite ends of the front and back symmetric docking insertion tubes 522 are both connected to the pump equipment.

[0051] When it is necessary to extract the water sample in the sampling bottle 423 at the highest position, one side of the cylinder 521 drives the corresponding mounting plate and the docking insertion tube 522 on the mounting plate to move towards the corresponding communication valve seat 511 until the inclined surface at the end of the docking insertion tube 522 is in extrusion fit with the inclined surface of the corresponding wedge-shaped valve block 512, so that the symmetrically arranged wedge-shaped valve blocks 512 move away from each other and release the seal of the corresponding water outlet. At this time, the corresponding injection tube can be opened, and the water sample in the sampling bottle 423 then flows into the corresponding docking insertion tube 522 through the corresponding communication valve seat 511. Finally, the water sample inside the sampling bottle 423 can be extracted, transported, analyzed and detected by a pumping device.

[0052] When it is necessary to clean the sampling bottle 423, first, the cylinder 521 on the other side drives the corresponding docking insertion tube 522 to be inserted into the corresponding communication valve seat 511 to open the corresponding water outlet. Then, the corresponding injection tube is opened, and the cleaning liquid is injected into the corresponding sampling bottle 423 through the injection tube. The cleaning liquid then continues to be injected into the sampling bottle 423 through the corresponding sliding tube 413, the first connecting pipe 411, the connecting groove, the rectangular adapter 421 and the second connecting pipe 422. Then, after the sampling bottle 423 is filled, the cleaning liquid in the sampling bottle 423 is continuously pumped out and discharged at the same rate by a pumping device, so that the cleaning liquid continuously flows to wash the sampling bottle 423 until the sampling bottle 423 is completely washed clean.

[0053] The above operation method can automatically clean the residual substances in the sampling bottle 423 before each sampling to avoid cross-contamination caused by the residues of water samples at different times or water layer samples at different depths in the sampling bottle 423, thus ensuring the independence and effectiveness of the samples taken. At the same time, it can also realize the automatic extraction and transportation of the samples taken in the sampling bottle 423, which not only reduces the manual intervention error but also improves the synchronous processing efficiency of multi-depth samples.

[0054] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmental monitoring instrument capable of regular sampling detection, including a loop-shaped floating plate, characterized in that: A protective box is arranged on the upper side of the loop-shaped floating board through a loop-shaped frame. A conveying mechanism is arranged inside the protective box. A sampling mechanism is jointly arranged on the protective box and the conveying mechanism. An extraction mechanism is jointly arranged on the sampling mechanism and the loop-shaped frame. The conveying mechanism includes a plurality of sliding seats uniformly and fixedly arranged on the lower surface inside the protective box from left to right and a differential driving part corresponding to the sliding seats. An equal-difference lifting part that cooperates with the corresponding differential driving part to lift is arranged on the sliding seat. An equal-depth lifting part for reciprocating lifting is arranged on the equal-difference lifting part. A timing driving part for driving the corresponding equal-depth lifting part is arranged on the front side of the sliding seat. The sampling mechanism includes a cleaning input part for inputting cleaning liquid jointly arranged on the protective box and the equal-depth lifting part. A limiting and communicating part that cooperates with the equal-depth lifting part and the equal-difference lifting part to perform corresponding-depth sampling respectively is arranged on the lower side of the equal-depth lifting part. An automatic sampling part that cooperates with the cleaning input part to perform adaptive sampling is arranged on the limiting and communicating part. The extraction mechanism includes a docking outflow part arranged on the automatic sampling part. A docking extraction part that cooperates with the docking outflow part to extract the sample or cleaning liquid inside the automatic sampling part is arranged on the loop-shaped frame.

2. The environmental monitoring instrument capable of performing regular sampling and detection according to claim 1, wherein: The differential driving part includes a fixed seat fixedly arranged on the lower surface inside the protective box and on the right side of the corresponding sliding seat. A motor is fixedly arranged on the rear side of the fixed seat. A first gear is fixedly arranged on the driving end of the motor. The diameters of the uniformly distributed first gears increase in equal proportion from left to right in sequence.

3. An environmental monitoring instrument capable of performing regular sampling and testing according to claim 2, characterized in that: The equal-difference lifting part includes a convex-shaped sliding groove that is vertically penetrated and jointly opened on the sliding seat and the lower side of the protective box. A lifting sleeve that moves up and down is slidably arranged inside the convex-shaped sliding groove. A first rack is installed on the right side of the lifting sleeve. The first rack is meshed and connected with the corresponding first gear. A through groove that is vertically penetrated is opened inside the lifting sleeve. The through groove is composed of a rotating groove and a rectangular sliding groove that are vertically distributed. A clamping column that moves back and forth is elastically slidably arranged at the rear side inside the rotating groove through a first spring.

4. An environmental monitoring instrument capable of regular sampling and detection according to claim 3, characterized in that: The equal-depth lifting part includes a driving sleeve rotatably connected inside the rotating groove. A second gear is installed at the upper end of the driving sleeve. A driven ring is fixedly arranged at the lower end of the driving sleeve. A positioning groove that cooperates with the clamping column to be clamped for temporary positioning is opened at the rear side of the driven ring. A driving column is fixedly arranged at the rear side inside the driven ring. A cylindrical cam that moves up and down is slidably arranged inside the driving sleeve. A driven sliding groove that slidably cooperates with the driving column is opened on the outer surface of the cylindrical cam. The driven sliding groove is obliquely distributed and connected end to end. A connecting groove that is vertically penetrated is opened inside the cylindrical cam.

5. An environmental monitoring instrument capable of regular sampling and detection according to claim 4, characterized in that: The timing driving part includes a guide rail fixedly arranged on the upper side of the lower surface inside the protective box through an L-shaped bracket. Electric sliders that move left and right are symmetrically slidably arranged on the guide rail from left to right. A second rack that is meshed and driven with the second gear is jointly fixedly arranged at the rear sides of the left and right symmetric electric sliders.

6. An environmental monitoring instrument capable of regular sampling and detection according to claim 4, characterized in that: The cleaning input part includes a first connecting pipe fixedly arranged at the upper end of the cylindrical cam and communicating with the connecting groove up and down. A sealing plug is inserted into the upper end of the first connecting pipe. An injection port penetrating up and down is arranged in the sealing plug. A first convex ring is fixedly arranged at the upper end of the sealing plug. A sliding pipe fixedly arranged on the upper side of the sealing plug and slidingly connected with the upper side of the protective box and communicating with each other up and down is provided. The lengths of the uniformly distributed sliding pipes increase in equal proportion from left to right in sequence. A second convex ring is fixedly arranged at the upper end of the sliding pipe. An injection pipe communicating with each other up and down is installed on the upper side of the sliding pipe.

7. An environmental monitoring instrument capable of regular sampling and detection according to claim 4, characterized in that: The limiting and connecting part includes a rectangular connecting head fixedly arranged at the lower end of the cylindrical cam and communicating with the connecting groove up and down. The rectangular connecting head is slidably connected with the rectangular sliding groove. A second connecting pipe communicating with each other up and down is fixedly arranged on the lower side of the rectangular connecting head. A sampling bottle with an upper end communicating is fixedly arranged at the lower end of the second connecting pipe.

8. An environmental monitoring instrument capable of regular sampling and detection according to claim 7, characterized in that: The automatic sampling part includes a water inlet penetrating up and down and arranged on the lower side of the sampling bottle. A one-way valve seat communicating with the water inlet is fixedly arranged on the lower surface inside the sampling bottle. A sealing valve plate moving up and down is elastically slidably arranged in the one-way valve seat through a second spring. A plurality of through holes communicating inside and outside are circumferentially and uniformly arranged on the one-way valve seat.

9. An environmental monitoring instrument capable of performing regular sampling and detection according to claim 7, characterized in that: The docking and outflow part includes water outlets symmetrically arranged in the front and back on the sampling bottle and penetrating inside and outside. Connecting valve seats communicating with the corresponding water outlets in the front and back are symmetrically installed on the sampling bottle. Constant pressure grooves communicating with the outside are symmetrically arranged in the left and right directions on the connecting valve seats. Wedge-shaped valve blocks elastically slidably connected with the corresponding constant pressure grooves through spring rods are symmetrically slidably arranged in the left and right directions in the connecting valve seats. The opposite ends of the symmetrically arranged wedge-shaped valve blocks in the left and right directions are both inclined surfaces.

10. An environmental monitoring instrument capable of performing regular sampling and detection according to claim 9, characterized in that: The docking and extraction part includes air cylinders symmetrically installed on the inner side of the loop-shaped frame in the front and back. A mounting plate moving back and forth is fixedly arranged at the telescopic end of the air cylinder. A plurality of docking insertion pipes corresponding to the sampling bottles and slidably connected with the loop-shaped frame are uniformly installed on the mounting plate in the left and right directions. The opposite ends of the symmetrically arranged docking insertion pipes in the front and back are both inclined surfaces for pressing and cooperating with the inclined surfaces of the corresponding wedge-shaped valve blocks.

Images