Automatic sampling device for sewage environmental protection detection

Abstract

The invention discloses an automatic sampling device for sewage environmental protection detection, and relates to the field of sewage sampling, the automatic sampling device comprises a hollow cylinder, the top of the hollow cylinder is rotatably provided with a conical top cover, the top of the conical top cover is provided with a retaining ring, the retaining ring is used for hanging a hoisting rope, the whole upper end of the conical top cover is conical, and the outer part of the hollow cylinder is provided with an embedding part; according to the invention, the hollow cylinder and the conical top cover are put into a water body through the rope, and the driving unit is remotely controlled to drive the sampling unit to operate, so that the sampling unit can suck and collect the water body; if the rope is wound by aquatic plants in the lifting process of the conical top cover and the hollow cylinder, when the resistance borne by the rope reaches a critical value, the aquatic plant cutting unit is triggered, the aquatic plants wound and bound on the surface of the conical top cover can be cut off through the aquatic plant cutting unit, and the conical top cover and the hollow cylinder are not bound by the aquatic plants any more.

Description

Technical Field

[0001] The present invention relates to the field of sewage sampling, in particular to an automatic sampling device for sewage environmental protection detection. Background Art

[0002] Environmental water sources need to be regularly tested for pollutants, especially waters near heavy industry, chemical industry, animal husbandry, etc., which are extremely susceptible to pollution. If pollutant testing and environmental control and management are not carried out for a long time, the ecology in the waters will be destroyed and even affect the ecosystem downstream of the waters.

[0003] The currently commonly used automatic sewage sampling device is to set up a boom on the shore or release a small floating boat on the shore, and then put the automatic sewage sampling device into the water body through the boom or small floating boat. After the automatic sewage sampling device is immersed in the water body to a certain depth, it can use the built-in electric structure to extract, collect and process the sewage.

[0004] Due to the presence of aquatic plants in the water body (especially in waters near animal husbandry, where the aquatic plants are particularly lush), when the automatic sewage sampling device is lowered into the water body by a cable and lifted up, the upper end of the automatic sewage sampling device connected to the cable is easily entangled with the aquatic plants. If there are more entangled aquatic plants, the lifting of the automatic sewage sampling device will be greatly obstructed, and its connection part is prone to fall off; if there are fewer entangled aquatic plants, the automatic sewage sampling device can be lifted up normally, but after it comes ashore, the staff needs to slowly separate the aquatic plants before they can take the sample from the automatic sewage sampling device. Summary of the Invention

[0005] The purpose of the present invention is to provide an automated sampling device for sewage environmental testing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an automated sampling device for sewage environmental protection detection, comprising: a hollow cylinder, the top of the hollow cylinder is rotatably equipped with a conical top cover, and the top of the conical top cover is provided with a buckle, the buckle is used to hang a lifting rope, the upper end of the conical top cover is cone-shaped as a whole, the outside of the hollow cylinder is provided with an embedding portion, and the inside of the embedding portion is movably embedded with a docking portion, the facing end surfaces of the embedding portion and the docking portion are magnetically designed, the facing end surfaces of the embedding portion and the docking portion are both embedded with magnetic blocks, and the magnetic poles of the facing end surfaces of the two magnetic blocks are opposite, a counterweight is fixedly provided at the bottom of the hollow cylinder, the counterweight is used to accelerate the sinking speed of the hollow cylinder, and the bottoms of the counterweight and the embedding portion are both provided with empty grooves; It also includes: a sampling unit for sampling and collecting water, the sampling unit is arranged inside the docking part, and the sampling unit draws samples from the water through the empty slot; A driving unit, used to drive the sampling unit to perform extraction and sampling operations, wherein the driving unit is located inside the hollow cylinder; The waterweed cutting unit is used for cutting and cleaning the waterweed wrapped around the top of the cone top cover. The waterweed cutting unit is located inside the cone top cover.

[0007] Preferably, the hollow cylinder and the docking part form a complete cylinder, the sampling unit includes a sampling cylinder fixed inside the docking part, and the bottom of the sampling cylinder is fixedly connected to a suction nozzle, the suction nozzle is movably engaged with the empty groove, the interior of the sampling cylinder is slidingly equipped with a piston disk, and the top of the piston disk is fixedly equipped with a lifting disk through a connecting tube, the inner wall of the sampling cylinder is fixedly equipped with at least one rib, and the ribs are distributed above the piston disk, and the lifting disk is slidably assembled with the ribs.

[0008] Preferably, the driving unit includes an electric motor fixed inside the hollow cylinder, and the output end of the motor is fixedly sleeved with a first synchronous wheel, and the interior of the hollow cylinder is also rotatably equipped with a rotating shaft, the rotating shaft is located directly above the sampling cylinder, and the rotating shaft and the sampling cylinder are coaxially arranged, and the rotating shaft is fixedly provided with a connecting disk at one end of the rotating shaft close to the first insertion cylinder, and the connecting disk is rotatably installed in the outer wall of the hollow cylinder, the other end of the connecting disk is sleeved with a second synchronous gear, and a synchronous toothed belt is installed between the first synchronous wheel and the second synchronous gear, a clamping component is provided between the rotating shaft and the second synchronous gear, and a docking component is provided between the connecting disk and the lifting disk.

[0009] Preferably, the docking component includes a first plug-in cylinder rotatably assembled inside the docking portion, and the first plug-in cylinder is located in the upper half of the docking portion, the top of the first plug-in cylinder is located outside the docking portion, the top of the first plug-in cylinder is also axially slidably inserted with a second plug-in cylinder, and a second spring is fixedly provided between the first plug-in cylinder and the second plug-in cylinder, and a trapezoidal insert is also fixedly provided on an end face of the second plug-in cylinder away from the first plug-in cylinder, a trapezoidal notch is provided at the bottom of the connecting disk, and the trapezoidal insert is movably assembled with the trapezoidal notch, a threaded column is fixedly provided at one end of the first plug-in cylinder away from the connecting disk, and the lifting disk is threadedly assembled on the outside of the threaded column, when the lifting disk is at the highest point and the lowest point inside the sampling cylinder, the connecting disk maintains a horizontal state, and the motor drives the second synchronous gear to rotate a number of times of 0.5 through the first synchronous wheel.

[0010] Preferably, the engaging component includes at least two circumferentially equidistantly distributed positioning conical grooves opened on the outer surface of the rotating shaft, and a sliding disk is also radially slidingly provided inside the second synchronous gear. A positioning pin is fixedly provided on an end face of the sliding disk close to the rotating shaft, and the positioning pin slides through the second synchronous gear, and the exposed end of the positioning pin is movably assembled with the positioning conical groove, and a first spring is provided on the end of the sliding disk away from the positioning pin.

[0011] Preferably, the water grass cutting unit includes a scabbard frame plate fixedly arranged on the inner wall of the circular arc of the conical top cover, the number of the scabbard frame plates is several and is equidistantly distributed around the circumference, a receiving groove is provided inside the scabbard frame plate, and the receiving groove also passes through the conical top cover, a cutter is slidably placed inside the receiving groove, a sliding groove is provided inside the cutter, and a docking block is slidably installed inside the sliding groove, a second sealing cylinder is fixedly mounted on an end face of the scabbard frame plate close to the center of the conical top cover, and the axis of the second sealing cylinder is perpendicular to the horizontal end face of the scabbard frame plate, a second piston disc is slidably assembled inside the second sealing disc, and a second piston rod is fixedly arranged between the second piston disc and the docking block, the second piston rod slides through the second sealing cylinder, an inner gear ring is fixedly provided on the inner wall of the conical top cover, a transmission gear meshing with the inner gear ring is fixedly provided on the top of the output end of the motor, a fourth spring is also provided on the end of the second piston disc away from the second piston rod, and a touch component is also provided inside the conical top cover.

[0012] Preferably, the trigger component includes a first sealing cylinder fixedly mounted at the center of the conical top cover, and a first piston disc is slidably arranged inside the first sealing cylinder, a first piston rod sliding through the first sealing cylinder and the conical top cover is fixedly arranged on the top of the first piston disc, and the retaining ring is rotatably assembled on the top of the first piston rod, a third spring is arranged between one end of the first piston disc close to the retaining ring and the first sealing cylinder, a connecting pipe is arranged between the first sealing cylinder and the second sealing cylinder, and the first piston disc inputs the medium inside the first sealing cylinder into the interior of the second sealing cylinder through the connecting pipe, causing the second piston rod to retract into the interior of the second sealing cylinder.

[0013] Preferably, the cutting edge of the cutter is a flat cutting edge or a toothed cutting edge.

[0014] Preferably, the width of the cutter is smaller than the width of the accommodating groove, and a closing plate is provided on one end face of the scabbard frame plate that extends into the interior of the conical top cover and is slidably fitted thereon, and the closing plate is also slidably fitted on the outside of the cutter, and a displacement unit is provided inside the conical top cover to cause the cutter to reciprocate.

[0015] Preferably, the displacement unit includes an extension block fixedly arranged at the bottom of the cutter, the extension block and the cutter are designed to be on the same horizontal plane, a limit plate is placed inside the conical top cover, and the limit plate and the hollow cylinder are fixedly mounted through a connecting frame tube, the limit plate is frustum-shaped, and the waistline of the limit plate is horizontally arranged with the cutter, the oblique arc surface of the limit plate is provided with a corrugated annular groove, and the extension block is fixed with a sliding column slidably embedded in the corrugated annular groove at one end close to the limit plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention places the hollow cylinder and the cone-top cover into the interior of the water body through a rope, and drives the sampling unit to operate through a remote control driving unit, so that the sampling unit can suck and collect water. If the rope is entangled by water plants during the process of lifting the cone-top cover and the hollow cylinder, the water plant cutting unit will be triggered when the resistance encountered by the rope reaches a critical value. The water plant cutting unit can cut off the water plants entangled and tied to the surface of the cone-top cover, so that the cone-top cover and the hollow cylinder are no longer bound by the water plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the hollow cylinder, the docking portion, the mounting portion and the conical top cover of the present invention; Figure 3 Schematic diagram of the internal structure of the docking part of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 Schematic diagram of the structure of the second spring, trapezoidal insert and trapezoidal notch of the present invention; Figure 6 This is a schematic diagram of the structure of the inner gear ring and the transmission gear of the present invention; Figure 7 This is a schematic diagram of the internal structure of the cone top cover of the present invention; Figure 8 Schematic diagram of the internal structure of the first sealing cylinder of the present invention Figure 9 Schematic diagram of the structure of the limit plate, corrugated ring groove and sliding column of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of point B in the middle; Figure 11 This is a schematic diagram of the receiving groove and cutter structure of the present invention; Figure 12 This is a schematic diagram of the closing plate and chute structure of the present invention; Figure 13This is a schematic diagram of the assembly state of the scabbard frame plate, closing plate, and cutter of the present invention.

[0018] In the figure: 1. Hollow cylinder; 2. Motor; 3. First synchronous wheel; 4. Mounting portion; 5. Docking portion; 6. Rotating shaft; 7. Second synchronous gear; 8. Counterweight; 9. Empty slot; 10. Sliding plate; 11. First spring; 12. Positioning pin; 13. Positioning conical groove; 14. Connecting plate; 15. First inserting cylinder; 16. Second inserting cylinder; 17. Trapezoidal insert; 18. Threaded column; 19. Lifting plate; 20. Connecting cylinder; 21. Third piston disk; 22. Sampling cylinder; 23. Suction nozzle; 24. Second spring; 25. Trapezoidal notch ; 26. Conical top cover; 27. First sealing cylinder; 28. First piston rod; 29. ​​Retaining ring; 30. First piston disc; 31. Third spring; 32. Connecting pipe; 33. Scabbard frame plate; 34. Second sealing cylinder; 35. Fourth spring; 36. Second piston disc; 37. Second piston rod; 38. Docking block; 39. Cutter; 40. Closing plate; 41. Receiving groove; 42. Slide groove; 43. Extension block; 44. Slide column; 45. Connecting frame cylinder; 46. Limiting plate; 47. Corrugated ring groove; 48. Inner gear ring; 49. Transmission gear. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-13 The figure shows an automatic sampling device for sewage environmental protection detection, comprising: a hollow cylinder 1, a cone top cover 26 is rotatably mounted on the top of the hollow cylinder 1, and a buckle 29 is placed on the top of the cone top cover 26, the buckle 29 is used to hang a lifting rope, the upper end of the cone top cover 26 is cone-shaped as a whole, the outside of the hollow cylinder 1 is provided with an embedding portion 4, and the inside of the embedding portion 4 is movably embedded with a docking portion 5, the facing end surfaces of the embedding portion 4 and the docking portion 5 are magnetically designed, and the embedding portion 4 and the docking portion 5 are connected. The facing end surfaces of the docking portion 5 are both equipped with magnetic blocks, and the magnetic poles of the facing end surfaces of the two magnetic blocks are opposite. A counterweight block 8 is fixedly provided at the bottom of the hollow cylinder 1. The counterweight block 8 is used to accelerate the sinking speed of the hollow cylinder 1, and the counterweight block 8 and the bottom of the mounting portion 4 are both provided with an empty groove 9. The docking portion 5 and the mounting portion 4 are semi-cylindrical in shape, and the outer surfaces of the docking portion 5 and the hollow cylinder 1 are also provided with friction grooves, which can increase the friction force when the staff's hands come into contact with the two. It also includes: a sampling unit for sampling and collecting water, the sampling unit is arranged inside the docking portion 5, and the sampling unit draws samples from the water through the empty slot 9; A driving unit, used to drive the sampling unit to perform extraction and sampling operations, and the driving unit is located inside the hollow cylinder 1; The waterweed cutting unit is used to cut and clean the waterweed wrapped around the top of the cone top cover 26 . The waterweed cutting unit is located inside the cone top cover 26 .

[0021] The hollow cylinder 1 and the docking part 5 form a complete cylinder. The sampling unit includes a sampling cylinder 22 fixed inside the docking part 5, and the bottom of the sampling cylinder 22 is fixedly connected to a suction nozzle 23, and the suction nozzle 23 is movably engaged with the empty groove 9. The interior of the sampling cylinder 22 is slidingly equipped with a third piston disk 21, and the top of the third piston disk 21 is fixedly equipped with a lifting disk 19 through a connecting cylinder 20. The inner wall of the sampling cylinder 22 is fixedly equipped with at least one rib, and the ribs are distributed above the third piston disk 21. The lifting disk 19 is slidably assembled with the ribs, and the ribs mainly play an axial limiting role on the lifting disk 19.

[0022] The driving unit includes a motor 2 fixed inside the hollow cylinder 1, and the output end of the motor 2 is fixedly sleeved with a first synchronous wheel 3. The interior of the hollow cylinder 1 is also rotatably equipped with a rotating shaft 6, which is located directly above the sampling cylinder 22, and the rotating shaft 6 and the sampling cylinder 22 are coaxially arranged. The end of the rotating shaft 6 close to the first plug-in cylinder 15 is fixedly provided with a connecting disk 14, and the connecting disk 14 is rotatably mounted in the outer wall of the hollow cylinder 1. The other end of the connecting disk 14 is sleeved with a second synchronous gear 7, and the transmission between the first synchronous wheel 3 and the second synchronous gear 7 It is equipped with a synchronous toothed belt, a locking component is provided between the rotating shaft 6 and the second synchronous gear 7, and a docking component is provided between the connecting disk 14 and the lifting disk 19. The motor 2 can drive the lifting disk 19 to perform axial displacement through the first synchronous wheel 3, the second synchronous gear 7 and the docking component. A rechargeable power supply and a remote control module that can remotely control the opening and closing of the motor 2 are placed inside the hollow cylinder 1. The remote control module is the most common product in the existing technology, and the power supply provides power to the remote control module and the motor 2 at the same time.

[0023] The docking component includes a first plug-in cylinder 15 rotatably assembled inside the docking portion 5, and the first plug-in cylinder 15 is located in the upper half of the docking portion 5, the top of the first plug-in cylinder 15 is located outside the docking portion 5, the top of the first plug-in cylinder 15 is also axially slidably inserted with a second plug-in cylinder 16, and a second spring 24 is fixedly provided between the first plug-in cylinder 15 and the second plug-in cylinder 16, and the second plug-in cylinder 16 is further fixedly provided with a trapezoidal insert 17 on one end surface away from the first plug-in cylinder 15, a trapezoidal notch 25 is provided at the bottom of the connecting disk 14, and the trapezoidal insert 17 is movably assembled with the trapezoidal notch 25, and the first plug-in cylinder 15 is fixedly provided with a threaded column 18 at one end away from the connecting disk 14, and the lifting disk 19 is threadedly assembled on the outside of the threaded column 18. When the lifting disk 19 is at the highest point and the lowest point inside the sampling cylinder 22, the connecting disk 14 remains in a horizontal state, and the motor 2 drives the second synchronous gear 7 to rotate the number of circles which is a multiple of 0.5 through the first synchronous wheel 3, that is, to always keep the attachment Figure 3 The trapezoidal insert 17 is in a horizontal state, in which the trapezoidal insert 17 can be disengaged from the interior of the trapezoidal notch 25 when the docking portion 5 is moved out from the interior of the mounting portion 4 .

[0024] The engaging components include at least two circumferentially equidistantly distributed positioning conical grooves 13 provided on the outer surface of the rotating shaft 6. A sliding plate 10 is also radially slidingly provided inside the second synchronous gear 7. A positioning pin 12 is fixedly provided on one end face of the sliding plate 10 close to the rotating shaft 6, and the positioning pin 12 slides through the second synchronous gear 7. The exposed end of the positioning pin 12 is movably assembled with the positioning conical groove 13, and a first spring 11 is provided on the end of the sliding plate 10 away from the positioning pin 12. When the lifting plate 19 can no longer move, the threaded column 18 will be restricted, resulting in a large torsional force between the rotating shaft 6 and the second synchronous gear 7. At this time, the positioning conical groove 13 will push the positioning pin 12 out.

[0025] The waterweed cutting unit includes a scabbard frame plate 33 fixedly arranged on the inner wall of the arc of the cone top cover 26. The number of scabbard frame plates 33 is several and they are equidistantly distributed around the circumference. A receiving groove 41 is provided inside the scabbard frame plate 33, and the receiving groove 41 also passes through the cone top cover 26. A cutter 39 is slidably placed inside the receiving groove 41. A slide groove 42 is provided inside the cutter 39, and a docking block 38 is slidably installed inside the slide groove 42. A second sealing cylinder 34 is fixedly mounted on one end face of the scabbard frame plate 33 near the center of the cone top cover 26, and the axis of the second sealing cylinder 34 is perpendicular to the horizontal end face of the scabbard frame plate 33. The second piston is slidably assembled inside the second sealing cylinder 34. Disc 36, and a second piston rod 37 is fixedly provided between the second piston disc 36 and the docking block 38, the second piston rod 37 slides through the second sealing cylinder 34, the inner wall of the conical top cover 26 is fixedly provided with an internal gear ring 48, and the top of the output end of the motor 2 is fixedly provided with a transmission gear 49 meshing with the internal gear ring 48, and the end of the second piston disc 36 away from the second piston rod 37 is also provided with a fourth spring 35, and the interior of the conical top cover 26 is also provided with a touch component. In the initial state, the cutter 39 is stored in the interior of the scabbard frame plate 33. Only after the touch component is triggered can the second piston rod 37 move with the cutter 39 through the docking block 38, so that the cutter 39 is extended.

[0026] The trigger component includes a first sealing cylinder 27 fixedly mounted at the center of the conical top cover 26, and a first piston disc 30 is slidably arranged inside the first sealing cylinder 27. A first piston rod 28 that slides through the first sealing cylinder 27 and the conical top cover 26 is fixedly arranged on the top of the first piston disc 30, and a retaining ring 29 is rotatably assembled on the top of the first piston rod 28. A third spring 31 is arranged between the end of the first piston disc 30 close to the retaining ring 29 and the first sealing cylinder 27. A connecting pipe 32 is arranged between the first sealing cylinder 27 and the second sealing cylinder 34, and the first piston disc 30 is connected to the second sealing cylinder 34 through the connecting pipe. 32 inputs the medium inside the first sealing cylinder 27 into the interior of the second sealing cylinder 34, prompting the second piston rod 37 to retract into the interior of the second sealing cylinder 34. When the cone top cover 26 is entangled and bound by aquatic plants, the pulling of the rope on the cone top cover 26 will produce greater resistance. At this time, the buckle 29 will move the first piston rod 28 upward, causing the first piston disc 30 to transport the medium into the interior of the second sealing cylinder 34. The blade part of the cutter 39 is a flat blade or a serrated blade, that is, the type of the cutter 39 can be selectively assembled, and the flat blade and the serrated blade have different effects on cutting aquatic plants. Example 2: Please refer to Figure 9 、 Figure 11-13This embodiment is a further explanation of the first embodiment. The width of the cutter 39 is smaller than the width of the accommodating groove 41 so that the cutter 39 has space to move up and down inside the accommodating groove 41. The end surface of the scabbard frame plate 33 extending into the interior of the conical top cover 26 is slidably fitted with a closing plate 40, and the closing plate 40 is also slidably fitted on the outside of the cutter 39. The closing plate 40 prevents external water from entering the interior of the conical top cover 26 through the gap in the accommodating groove 41. The interior of the conical top cover 26 is provided with a displacement unit that causes the cutter 39 to reciprocate.

[0027] The displacement unit includes an extension block 43 fixedly arranged at the bottom of the cutter 39. The extension block 43 and the cutter 39 are designed to be on the same horizontal plane. A limit plate 46 is placed inside the conical top cover 26, and the limit plate 46 and the hollow cylinder 1 are fixedly mounted through a connecting frame tube 45. The limit plate 46 is frustum-shaped, and the waistline of the limit plate 46 is horizontally arranged with the cutter 39. A corrugated annular groove 47 is provided on the oblique arc surface of the limit plate 46. A sliding column 44 is fixedly provided at one end of the extension block 43 near the limit plate 46, which is slidably embedded in the inside of the corrugated annular groove 47. When the conical top cover 26 rotates and the position of the limit plate 46 is limited, the cutter 39 can move back and forth in an inclined state through the cooperation of the sliding column 44 and the corrugated annular groove 47. Working principle: After the staff lowers the sampling device into the water body via a cable, they control the depth of the sampling device immersed in the water body as needed, and then remotely start the motor 2. The motor 2 drives the rotating shaft 6 to rotate through the action of the first synchronous wheel 3, the second synchronous gear 7 and the synchronous toothed belt. The motor 2 is assembled with the trapezoidal insert 17 and the trapezoidal notch 25, and can rotate with the threaded column 18. At this time, because the lifting plate 19 is restricted by the ribs, the lifting plate 19 can move upward with the third piston plate 21 through the connecting tube 20. At this time, the suction nozzle 23 can draw water into the interior of the sampling tube 22; A pressure valve can be further provided at the bottom of the suction nozzle 23 , that is, when the negative pressure in the sampling cylinder 22 is large, water can automatically enter the interior of the sampling cylinder 22 , and the water will not easily flow out from the interior of the sampling cylinder 22 .

[0028] The driving direction of the motor 2 is maintained, and the lifting plate 19 is moved up to the maximum value. After that, the lifting plate 19 cannot move further. The continuous driving of the motor 2 will separate the positioning pin 12 from the positioning cone groove 13, causing the second synchronous gear 7 to idle. The motor 2 then continuously drives the cone top cover 26 to rotate through the engagement of the transmission gear 49 with the inner gear ring 48. After the sampling is completed, when the sampling device is lifted up by the rope, if the surface of the sampling device is bound or entangled with too much aquatic plants, the rise of the sampling device will encounter greater resistance. At this time, the rope stretches the first piston rod 28 through the buckle 29. The displacement of the first piston disc 30 can pressurize the medium in the first sealing cylinder 27 and transport it to the inside of the second sealing cylinder 34, so that the cutter 39 can be extended. Since the cutter 39 rotates with the cone top cover 26, during the rotation process, the cutter 39 can cut off the aquatic plants bound and entangled at the upper end of the sampling device, so that the sampling device can be lifted up normally and leave the water body without the rope breaking or the rope being separated from the sampling device.

[0029] During the rotation of the conical top cover 26 with the cutter 39, since the position of the limit plate 46 is fixed, and the corrugated ring groove 47 restricts the sliding column 44, the cutter 39 can be moved back and forth during the rotation process, that is, the cutter 39 can cut the aquatic plants when it moves up and down inside the accommodating groove 41, which can further improve the cutting effect.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automated sampling device for sewage environmental testing, characterized in that: include: A hollow cylinder (1), wherein the top of the hollow cylinder (1) is rotatably equipped with a conical top cover (26), and a buckle (29) is placed on the top of the conical top cover (26); an embedding portion (4) is provided on the outside of the hollow cylinder (1), and a docking portion (5) is movably embedded inside the embedding portion (4); the facing end surfaces of the embedding portion (4) and the docking portion (5) are of a magnetic attraction design; a counterweight (8) is fixedly provided on the bottom of the hollow cylinder (1), and both the counterweight (8) and the bottom of the embedding portion (4) are provided with a slot (9); Also includes: A sampling unit is used for sampling and collecting water, the sampling unit is arranged inside the docking portion (5), and the sampling unit draws samples from the water through the empty slot (9); A driving unit, used for driving the sampling unit to perform extraction and sampling operations, the driving unit being located inside the hollow cylinder (1); The waterweed cutting unit is used for cutting and cleaning the waterweed wrapped around the top of the cone top cover (26); the waterweed cutting unit is located inside the cone top cover (26).

2. The automated sampling device for wastewater environmental testing according to claim 1, characterized in that: The sampling unit comprises a sampling cylinder (22) fixed inside the docking portion (5), and a suction nozzle (23) is fixedly provided at the bottom of the sampling cylinder (22), and the suction nozzle (23) is movably engaged with the empty groove (9). A third piston disc (21) is slidably assembled inside the sampling cylinder (22), and a lifting disc (19) is fixedly provided on the top of the third piston disc (21) via a connecting cylinder (20). At least one rib is fixedly provided on the inner wall of the sampling cylinder (22), and the lifting disc (19) is slidably assembled with the rib.

3. The automated sampling device for wastewater environmental testing according to claim 2, characterized in that: The driving unit comprises a motor (2) fixed inside the hollow cylinder (1), and a first synchronous wheel (3) is fixedly sleeved on the output end of the motor (2). A rotating shaft (6) is also rotatably mounted inside the hollow cylinder (1), and the rotating shaft (6) is located directly above the sampling cylinder (22). A connecting disk (14) is fixedly mounted on one end of the rotating shaft (6) close to the lifting disk (19), and a second synchronous gear (7) is sleeved on the other end of the connecting disk (14). A synchronous toothed belt is assembled between the first synchronous wheel (3) and the second synchronous gear (7), a locking component is provided between the rotating shaft (6) and the second synchronous gear (7), and a docking component is provided between the connecting disk (14) and the lifting disk (19).

4. The automated sampling device for wastewater environmental testing according to claim 3, characterized in that: The docking component includes a first plug-in cylinder (15) rotatably assembled inside the docking portion (5), the top of the first plug-in cylinder (15) is located outside the docking portion (5), the top of the first plug-in cylinder (15) is also slidably inserted with a second plug-in cylinder (16), and a second spring (24) is fixedly arranged between the first plug-in cylinder (15) and the second plug-in cylinder (16), and a trapezoidal insert (17) is fixedly arranged on an end surface of the second plug-in cylinder (16) away from the first plug-in cylinder (15), a trapezoidal notch (25) is provided at the bottom of the connecting disk (14), and the trapezoidal insert (17) is movably assembled with the trapezoidal notch (25), a threaded column (18) is fixedly arranged on one end of the first plug-in cylinder (15) away from the connecting disk (14), and the lifting disk (19) is threadedly assembled on the outside of the threaded column (18).

5. The automated sampling device for sewage environmental testing according to claim 3, characterized in that: The engaging component includes at least two positioning cone grooves (13) provided on the outer surface of the rotating shaft (6), and a sliding plate (10) is provided inside the second synchronous gear (7) in a radially sliding manner. A positioning pin (12) is fixedly provided on one end surface of the sliding plate (10) close to the rotating shaft (6), and the positioning pin (12) slides through the second synchronous gear (7). The exposed end of the positioning pin (12) is movably assembled with the positioning cone groove (13), and a first spring (11) is provided on the end of the sliding plate (10) away from the positioning pin (12).

6. The automated sampling device for wastewater environmental testing according to claim 3, characterized in that: The waterweed cutting unit comprises a scabbard frame plate (33) fixedly arranged on the inner wall of the circular arc of the cone top cover (26), a receiving groove (41) is provided inside the scabbard frame plate (33), and the receiving groove (41) simultaneously passes through the cone top cover (26), a cutter (39) is slidably placed inside the receiving groove (41), a slide groove (42) is provided inside the cutter (39), and a docking block (38) is slidably mounted inside the slide groove (42), and a second sealing cylinder (34) is fixedly mounted on one end face of the scabbard frame plate (33) near the center of the cone top cover (26). ), the second sealing cylinder (34) is internally slidably equipped with a second piston disc (36), and a second piston rod (37) is fixedly arranged between the second piston disc (36) and the docking block (38), an inner gear ring (48) is fixedly arranged on the inner wall of the conical top cover (26), a transmission gear (49) meshing with the inner gear ring (48) is fixedly arranged on the top of the output end of the motor (2), a fourth spring (35) is further provided at one end of the second piston disc (36) away from the second piston rod (37), and a touch component is further provided inside the conical top cover (26).

7. The automated sampling device for wastewater environmental testing according to claim 6, characterized in that: The touch component includes a first sealing cylinder (27) fixedly mounted at the center of the conical top cover (26), and a first piston disc (30) is slidably arranged inside the first sealing cylinder (27), a first piston rod (28) is fixedly arranged on the top of the first piston disc (30) and slides through the first sealing cylinder (27) and the conical top cover (26), and the retaining ring (29) is rotatably assembled on the top of the first piston rod (28), a third spring (31) is arranged between one end of the first piston disc (30) close to the retaining ring (29) and the first sealing cylinder (27), and a connecting pipe (32) is arranged between the first sealing cylinder (27) and the second sealing cylinder (34).

8. The automated sampling device for wastewater environmental testing according to claim 6, characterized in that: The cutting edge of the cutter (39) is a flat cutting edge or a toothed cutting edge.

9. The automated sampling device for wastewater environmental testing according to claim 6, characterized in that: The width of the cutter (39) is smaller than the width of the accommodating groove (41), and a closing plate (40) is provided on one end surface of the scabbard frame plate (33) extending into the interior of the conical top cover (26) in a sliding manner, and the closing plate (40) is also slidably mounted on the outside of the cutter (39), and a displacement unit is provided inside the conical top cover (26).

10. The automated sampling device for sewage environmental testing according to claim 9, characterized in that: The displacement unit includes an extension block (43) fixedly arranged at the bottom of the cutter (39), a limit plate (46) is placed inside the conical top cover (26), and the limit plate (46) and the hollow cylinder (1) are fixedly mounted via a connecting frame tube (45), the limit plate (46) is in a truncated cone shape, and the waistline of the limit plate (46) is horizontally arranged with the cutter (39), the oblique arc surface of the limit plate (46) is provided with a corrugated annular groove (47), and a sliding column (44) is fixedly arranged at one end of the extension block (43) close to the limit plate (46) and is slidably embedded in the corrugated annular groove (47).

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