Sample sampling device for occupational health evaluation detection

Abstract

The invention discloses a sampling device for occupational health evaluation and detection, and relates to the technical field of occupational health evaluation, the sampling device comprises: a main body mechanism, the main body mechanism comprises a housing, a mounting groove and an infusion tube; a moving mechanism is mounted on the shell and comprises a propeller and a turning plate; a storage mechanism is mounted in the mounting groove and comprises a sample bottle and a connector; a sampling mechanism is installed in the shell, the sampling mechanism comprises a water pump installed in the shell, the output end of the water pump is rotationally connected with a liquid distribution pipe, and a liquid outlet is formed in the side face of the top end of the liquid distribution pipe; a filtering mechanism is installed in the shell and comprises a water drawing pipe installed at the input end of the water pump. The device has the advantages of remote operation, high efficiency, accuracy, automatic sampling, high safety and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of occupational health assessment, and more specifically, to a sample sampling device for occupational health assessment and detection. Background Art

[0002] Occupational health assessment is to evaluate the impact of various harmful factors in the working environment on the health of workers through systematic and scientific methods, aiming to identify, evaluate, and control occupational hazards, so as to ensure the health and safety of workers.

[0003] As an important part of occupational health assessment, the sampling and analysis of environmental media are key links in assessing the exposure risk of workers. Among them, water sample collection is particularly important in occupational health assessment involving water pollution. Water sample collection is mainly used to detect harmful substances in the water bodies of the workplace and surrounding environment, such as heavy metals, organic pollutants, chemical solvents, and pathogenic microorganisms. These substances may pose potential threats to the health of workers through direct contact or indirect exposure.

[0004] However, in actual operation, water sample collection work faces many technical problems and operation limitations. Especially in a wide water area environment, it is often difficult for workers to reach distant sampling points for sampling. In the existing technology, water sample collection mainly relies on manual operation. Sampling personnel need to carry sampling equipment and take a boat or wade through the water to the target area. This method is not only inefficient, time-consuming, and laborious, but also has certain safety risks. Especially in the case of rapid water flow, deep water, or bad weather conditions, the feasibility and safety of manual sampling are greatly reduced. In addition, for waters with complex terrain or difficult to access (such as swamps, wetlands, or near industrial wastewater discharge outlets), it is difficult to ensure the representativeness and accuracy of samples by manual sampling, which may lead to deviations in test results, thereby affecting the scientificity and reliability of occupational health assessment. Therefore, it is necessary to propose a sample sampling device for occupational health assessment and detection to solve the above problems. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a sample sampling device for occupational health assessment and detection, which can solve the problems that it is difficult for workers to reach distant sampling points, the sampling efficiency is low, and the safety is insufficient in a wide water area or complex environment, and has the advantages of remote operation, high efficiency and accuracy, automatic sampling, and high safety.

[0006] To solve the above problems, the present invention adopts the following technical solutions: A sample sampling device for occupational health assessment and detection includes a main body mechanism. The main body mechanism includes a housing. A plurality of mounting grooves are symmetrically arranged on the top surface of the housing, and a plurality of infusion pipes corresponding to the mounting grooves are symmetrically arranged inside the housing; A moving mechanism is installed on the housing, and the moving mechanism includes a propeller and a steering vane installed on the bottom surface of the housing; A storage mechanism is installed inside the installation groove. The storage mechanism includes sample bottles installed inside each installation groove. A connection port is provided on the side surface of the top end of the sample bottle, and the connection port is communicated with one end of the corresponding infusion tube; A sampling mechanism is installed inside the housing. The sampling mechanism includes a water pump installed inside the housing. The output end of the water pump is rotatably connected with a liquid distribution tube. An liquid outlet is provided on the side surface of the top end of the liquid distribution tube, and the liquid outlet is communicated with the other end of each infusion tube; A filtering mechanism is installed inside the housing. The filtering mechanism includes a water suction pipe installed at the input end of the water pump.

[0007] As a preferred solution of the present invention, the main body mechanism further includes a control unit installed on the top surface of the housing. An inner cavity for installing the sampling mechanism is provided inside the housing, and the other end of the infusion tube is communicated with the inner cavity. A first spring and a liquid injection head are installed inside one end of each infusion tube, and the liquid injection head is elastically connected to the inside of one end of the infusion tube through the first spring.

[0008] As a preferred solution of the present invention, the moving mechanism further includes a first motor and a waterproof cover installed on the top of the housing. The output shaft of the first motor penetrates the housing. A protective housing is installed on the bottom surface of the housing. The propeller is rotatably connected inside the protective housing. A closed sleeve is installed on the back of the protective housing. The end of the output shaft of the first motor is located inside the closed sleeve, and a first bevel gear is installed on the output shaft of the first motor. A second bevel gear is installed on the propeller. The first bevel gear is meshed and connected with the second bevel gear. A second motor is installed inside the waterproof cover. The output end of the second motor is installed with another first bevel gear. Another second bevel gear meshed and connected with the first bevel gear is also installed inside the waterproof cover. This second bevel gear is installed on the steering vane.

[0009] As a preferred solution of the present invention, the storage mechanism further includes a third spring and a sealing plate installed inside the connection port. The sealing plate is elastically connected to the inside of the connection port through the third spring. A fourth spring and a piston are installed inside the sample bottle. The piston is elastically connected to the inside of the sample bottle through the fourth spring. A top column is installed on the bottom surface of the piston. A round opening is provided at the bottom of the sample bottle.

[0010] As a preferred embodiment of the present invention, a transmission mechanism is provided at the bottom of each of the installation grooves. The transmission mechanism includes a moving block and a fifth spring installed in the housing at the bottom end of each installation groove, and the moving block is elastically connected to the inside of the housing through the fifth spring. A locking groove is provided on the side surface of the moving block, a push rod is installed on the top surface of the end of the moving block, and a push rod is installed on the bottom surface of the end of the moving block. A number of locking blocks and sixth springs are also installed inside the housing. The locking blocks are elastically connected to the inside of the housing through the corresponding sixth springs, and the locking blocks are engaged with the locking grooves on the corresponding moving blocks. A wedge block is fixed to the top end of the locking block.

[0011] As a preferred embodiment of the present invention, the sampling mechanism further includes a third motor installed inside the inner cavity. The output end of the third motor is connected to the inside of the water pump. A convex plate is installed on the outer wall of the liquid separation pipe, and a number of the push rods all abut against the side surface of the convex plate.

[0012] As a preferred embodiment of the present invention, the filtering mechanism further includes a lower filter plate installed at the bottom of the water suction pipe. A number of sliding grooves are circumferentially arranged on the top surface edge of the lower filter plate. Two seventh springs are symmetrically installed in each of the sliding grooves. An upper filter plate is rotatably connected to the top surface of the lower filter plate. A number of sliding blocks are circumferentially arranged on the bottom surface edge of the upper filter plate. Each sliding block is slidably connected to the corresponding sliding groove, and both sides of each sliding block abut against the corresponding seventh spring. A number of pushing blocks are circumferentially arranged on the top surface edge of the upper filter plate.

[0013] As a preferred embodiment of the present invention, an impact mechanism is installed inside the water suction pipe. The impact mechanism includes a support cylinder installed on the inner wall of the water suction pipe. A rotating rod passes through the support cylinder, and the bottom end of the rotating rod is rotatably connected to the lower filter plate and the upper filter plate. An eighth spring is installed inside the support cylinder. A turbine is installed at the top end of the rotating rod. A sliding cylinder is slidably connected inside the support cylinder. The sliding cylinder is elastically connected to the support cylinder through the eighth spring, and the rotating rod passes through the sliding cylinder. A guide groove is provided inside the sliding cylinder. A sliding head is installed on the rotating rod, and the sliding head is slidably connected to the guide groove. A pressure plate is installed at the bottom of the sliding cylinder, and the pressure plate is slidably connected to the rotating rod. A number of pressure reducing plates are annularly arranged on the outer edge of the pressure plate. A rotating shaft is installed on both sides of each pressure reducing plate, and a torsion spring is installed on the rotating shaft. The rotating shaft is elastically connected to the inside of the pressure plate through the torsion spring. A number of pressure columns are circumferentially arranged on the bottom surface of the pressure plate.

[0014] As a preferred embodiment of the present invention, a sweeping mechanism is installed inside the bottom surface of the housing. The sweeping mechanism includes a gear ring installed inside the bottom surface of the housing. A number of racks are circumferentially arrayed inside the bottom end of the housing. All the racks are meshed and connected to the outer side of the gear ring. And the end of each rack is rotatably connected to the bottom end of the corresponding push rod. A slideway is provided on the rack. A number of positioning columns are installed inside the housing. Each positioning column is slidably connected inside the corresponding slideway. A gear is installed inside the housing. The gear is meshed and connected to the inner side of the gear ring. A sweeping bar is installed at the bottom of the gear. The sweeping bar swings on the bottom surface of the water suction pipe.

[0015] Compared with the prior art, the advantages of the present invention are as follows: 1. A housing capable of moving on the water surface is provided. It is remotely controlled by a remote control device, and can efficiently and safely perform water sampling without the sampler wading into the water. It greatly improves convenience and efficiency while ensuring the personal safety of the staff. Moreover, multiple storage mechanisms are provided inside the housing. When a sample bottle is filled with water sample, the weight of the water in the sample bottle releases the restriction of the locking block, thereby releasing the moving block, pushing the convex plate, and driving the liquid separation pipe to rotate through the convex plate, so that the liquid separation pipe is connected to the next sample bottle, and then continue to collect water samples. This design not only realizes automatic continuous sampling, reduces the frequency of manual intervention, but also significantly improves the sampling efficiency, especially suitable for long-term and large-scale water sampling tasks.

[0016] 2. While the transmission mechanism drives the convex plate to rotate, it can also use the push rod to slide corresponding to the rack, thereby driving the gear ring to rotate. The gear ring then drives the sweeping bar to swing through the gear, and then scrape the bottom of the lower filter plate, initially removing the impurities that may be adsorbed on the lower filter plate in the water body, avoiding blockage of the lower filter plate, and improving the efficiency of water sample collection.

[0017] 3. While the water pump pumps the water sample into the water suction pipe, it drives the rotating rod to rotate by the water flow, so that the sliding head slides in the guide groove, thereby driving the sliding cylinder to move up and down. The sliding cylinder drives the pressure plate to move up and down. During the downward movement of the pressure plate, the pressure reducing plate increases the resistance, so that part of the water in the water suction pipe flows downward, flushing the lower filter plate and the upper filter plate, removing the impurities attached to the lower filter plate and the upper filter plate, avoiding blockage of the lower filter plate and the upper filter plate by the impurities in the water body, and further improving the effect of removing impurities in the water; during the downward movement of the pressure plate, when approaching the upper filter plate, the pressure column squeezes the push block, causing the upper filter plate and the lower filter plate to rotate relative to each other, resulting in the misalignment of the mesh holes on the upper filter plate and the lower filter plate, pulling and cutting the impurities in the mesh holes, and then using the water flow scoured by the pressure reducing plate to remove the impurities in the mesh holes, improving the removal effect again, and avoiding blockage of the lower filter plate and the upper filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the overall sectional structure of the present invention; Figure 3 is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 is a schematic diagram of the partial sectional structure of the present invention; Figure 5 is of the present invention Figure 4 schematic diagram of the enlarged structure at A; Figure 6 is a schematic diagram of the sampling mechanism and the filtering mechanism of the present invention; Figure 7 is of the present invention Figure 6 schematic diagram of the enlarged structure at B; Figure 8 is a schematic diagram of the cooperation structure of the transmission mechanism and the convex plate of the present invention; Figure 9 is a schematic diagram of the disassembled structure of the transmission mechanism of the present invention; Figure 10 is a schematic diagram of the sweeping mechanism of the present invention; Figure 11 is a schematic diagram of the partial sectional structure of the impact mechanism of the present invention; Figure 12 is a schematic diagram of the perspective structure of the sliding cylinder of the present invention; Figure 13 is a schematic diagram of the disassembled structure of the filtering mechanism of the present invention.

[0019] Description of the reference numerals in the figure: 1. Main body mechanism; 11. Housing; 12. Control unit; 13. Installation groove; 14. Inner cavity; 15. Infusion tube; 16. First spring; 17. Liquid injection head; 2. Moving mechanism; 21. First motor; 22. Protective housing; 23. Propeller; 24. Sealing sleeve; 25. First bevel gear; 26. Second bevel gear; 27. Waterproof cover; 28. Second motor; 29. Direction-changing plate; 3. Storage mechanism; 31. Sample bottle; 32. Connection port; 33. Third spring; 34. Sealing plate; 35. Fourth spring; 36. Piston; 37. Top column; 38. Round opening; 4. Transmission mechanism; 41. Moving block; 42. Lock groove; 43. Fifth spring; 44. Top rod; 45. Push rod; 46. Lock block; 47. Sixth spring; 48. Wedge block; 5. Sampling mechanism; 51. Third motor; 52. Water pump; 53. Liquid separation tube; 54. Convex plate; 55. Liquid outlet; 6. Filtering mechanism; 61. Water suction pipe; 62. Lower filter plate; 63. Slide groove; 64. Seventh spring; 65. Upper filter plate; 66. Slide block; 67. Push block; 7. Impact mechanism; 71. Support cylinder; 72. Rotating rod; 73. Eighth spring; 74. Turbine; 75. Slide cylinder; 76. Guide groove; 77. Slide head; 78. Pressure plate; 79. Pressure relief plate; 791. Rotating shaft; 792. Torsion spring; 793. Pressure column; 8. Sweeping mechanism; 81. Gear ring; 82. Rack; 83. Slideway; 84. Positioning column; 85. Gear; 86. Sweeping bar. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Example 1, please refer to Figures 1 to 13 As shown in the figure, the present invention discloses a sample sampling device for occupational health evaluation and detection, including a main body mechanism 1. The main body mechanism 1 includes a housing 11. A plurality of installation grooves 13 are symmetrically arranged on the top surface of the housing 11. A plurality of infusion tubes 15 corresponding to the installation grooves 13 are symmetrically arranged inside the housing 11; A moving mechanism 2 is installed on the housing 11. The moving mechanism 2 includes a propeller 23 and a direction-changing plate 29 installed on the bottom surface of the housing 11; A storage mechanism 3 is installed inside the installation groove 13. The storage mechanism 3 includes a sample bottle 31 installed inside each installation groove 13. A connection port 32 is provided on the side surface of the top end of the sample bottle 31. The connection port 32 is communicated with one end of the corresponding infusion tube 15; Inside the housing 11, a sampling mechanism 5 is installed. The sampling mechanism 5 includes a water pump 52 installed inside the housing 11. The output end of the water pump 52 is rotatably connected to a liquid distribution pipe 53. The top side of the liquid distribution pipe 53 is provided with a liquid outlet 55, and the liquid outlet 55 communicates with the other end of each infusion pipe 15. Inside the housing 11, a filtering mechanism 6 is installed. The filtering mechanism 6 includes a water suction pipe 61 installed at the input end of the water pump 52.

[0022] The main body mechanism 1 further includes a control unit 12 installed on the top surface of the housing 11. Inside the housing 11, there is an inner cavity 14 for installing the sampling mechanism 5, and the other end of the infusion pipe 15 communicates with the inner cavity 14. Inside each end of the infusion pipe 15, a first spring 16 and an injection head 17 are installed. The injection head 17 is elastically connected to the inside of one end of the infusion pipe 15 through the first spring 16.

[0023] The moving mechanism 2 further includes a first motor 21 and a waterproof cover 27 installed on the top of the housing 11. The output shaft of the first motor 21 penetrates the housing 11. A protective housing 22 is installed on the bottom surface of the housing 11. A propeller 23 is rotatably connected inside the protective housing 22. A sealing sleeve 24 is installed on the back of the protective housing 22. The end of the output shaft of the first motor 21 is inside the sealing sleeve 24, and a first bevel gear 25 is installed on the output shaft of the first motor 21. A second bevel gear 26 is installed on the propeller 23, and the first bevel gear 25 is meshed with the second bevel gear 26. A second motor 28 is installed inside the waterproof cover 27. The output end of the second motor 28 is installed with another first bevel gear 25. Another second bevel gear 26 meshed with the first bevel gear 25 is also installed inside the waterproof cover 27, and this second bevel gear 26 is installed on a steering plate 29.

[0024] The sampling mechanism 5 further includes a third motor 51 installed inside the inner cavity 14. The output end of the third motor 51 is connected to the inside of the water pump 52. A convex plate 54 is installed on the outer wall of the liquid distribution pipe 53, and a number of ejector rods 44 all abut against the side surface of the convex plate 54.

[0025] In an environment where the water area is wide and it is inconvenient for personnel to collect water samples, the staff can place the present invention into the water body and remotely control the present invention to collect water samples. The control unit 12 on the top surface of the housing 11 integrates a signal receiving and transmitting device and a central processing unit for the internal electronic components of the present invention (such as starting and stopping of each motor).

[0026] First, install the sample bottle 31 inside each installation groove 13, so that the connection port 32 communicates with one end of the corresponding infusion tube 15 (a rib and a groove that cooperate with each other are respectively provided on the inner wall of the installation groove 13 and the side surface of the sample bottle 31. When the sample bottle 31 is installed inside the installation groove 13, the rib is engaged in the corresponding groove, making the sample bottle 31 not easy to shake and ensuring that the connection port 32 accurately communicates with one end of the corresponding infusion tube 15). When communicating, the liquid injection head 17 at the end of the infusion tube 15 is inserted into the connection port 32 under the elastic force of the first spring 16, making the connection between the connection port 32 and the corresponding infusion tube 15 more stable and sealed.

[0027] Remotely control the start and stop of the first motor 21 and the second motor 28. When moving forward and backward, the first motor 21 drives the first bevel gear 25 to rotate inside the closed sleeve 24, and drives the propeller 23 to rotate through the second bevel gear 26 inside the closed sleeve 24, thereby driving the housing 11 to move on the water surface. The propeller 23 is inside the protective shell 22, and the protective shell 22 can protect the propeller 23 from being damaged by foreign objects in the water. When changing the moving direction, the second motor 28 drives the first bevel gear 25 inside the waterproof cover 27 to rotate, thereby driving the steering plate 29 to swing at the bottom of the housing 11 through the second bevel gear 26 inside the waterproof cover 27, and then changing the moving direction of the housing 11.

[0028] After reaching the sampling point, the first motor 21 and the second motor 28 are turned off, and the housing 11 floats and stops on the water surface. The third motor 51 is started to drive the water pump 52 to work. The water pump 52 sucks the water sample at the sampling point into the water suction pipe 61 and then enters the liquid separation pipe 53 after passing through the water pump 52. In the initial state, the liquid outlet 55 on the side surface of the top of the liquid separation pipe 53 communicates with the other end of one of the infusion tubes 15; the liquid injection head 17 communicates with the corresponding connection port 32, but the sealing plate 34 inside the connection port 32 still closes the connection port 32 under the elastic force of the third spring 33. Subsequently, the water body in the liquid separation pipe 53 enters the corresponding connected infusion tube 15 through the liquid outlet 55, and finally impacts on the sealing plate 34 inside the connection port 32. The water pressure causes the sealing plate 34 to slide into the sample bottle 31, compressing the third spring 33, thereby opening the connection port 32, making the infusion tube 15 communicate with the sample bottle 31 through the connection port 32, and the water body in the infusion tube 15 enters the sample bottle 31. After the sample bottle 31 is filled with water, the water sample collection in this area is completed, and the water sample collection in the next area can be carried out.

[0029] Embodiment 2 is an explanatory description made on the basis of Embodiment 1. Specifically, please refer to Figures 1 to 13, the storage mechanism 3 further includes a third spring 33 and a sealing plate 34 installed inside the connection port 32. The sealing plate 34 is elastically connected to the inside of the connection port 32 through the third spring 33. A fourth spring 35 and a piston 36 are installed inside the sample bottle 31. The piston 36 is elastically connected to the inside of the sample bottle 31 through the fourth spring 35. A top column 37 is installed on the bottom surface of the piston 36, and a round opening 38 is provided at the bottom of the sample bottle 31.

[0030] A transmission mechanism 4 is provided at the bottom of each installation groove 13. The transmission mechanism 4 includes a moving block 41 and a fifth spring 43 installed inside a housing 11 at the bottom end of each installation groove 13. The moving block 41 is elastically connected to the inside of the housing 11 through the fifth spring 43. A locking groove 42 is provided on the side surface of the moving block 41. A top rod 44 is installed on the top surface of the end of the moving block 41, and a push rod 45 is installed on the bottom surface of the end of the moving block 41. A number of locking blocks 46 and a sixth spring 47 are also installed inside the housing 11. The locking blocks 46 are elastically connected to the inside of the housing 11 through the corresponding sixth springs 47, and the locking blocks 46 are engaged with the locking grooves 42 on the corresponding moving blocks 41. A wedge block 48 is fixed to the top end of the locking block 46.

[0031] A sweeping mechanism 8 is installed inside the bottom surface of the housing 11. The sweeping mechanism 8 includes a gear ring 81 installed inside the bottom surface of the housing 11. A number of rack bars 82 are circumferentially arrayed inside the bottom end of the housing 11. All the rack bars 82 are meshed with the outer side of the gear ring 81, and the end of each rack bar 82 is rotatably connected to the bottom end of the corresponding push rod 45. A slideway 83 is provided on the rack bar 82. A number of positioning columns 84 are installed inside the housing 11. Each positioning column 84 is slidably connected to the corresponding slideway 83. A gear 85 is installed inside the housing 11. The gear 85 is meshed with the inner side of the gear ring 81. A sweeping bar 86 is installed at the bottom of the gear 85. The sweeping bar 86 swings on the bottom surface of the water suction pipe 61.

[0032] The water sample in a sampling area gradually enters the corresponding sample bottle 31, applying pressure to the piston 36. During this process, the mass of the water in the sample bottle 31 continuously increases, and the piston 36 continuously slides downward (as described in the attached Figure 4In the orientation shown, while the piston 36 compresses the fourth spring 35, it drives the ejector pin 37 at its bottom to descend. When the sample bottle 31 is filled with the sample, the piston 36 descends to the maximum extent, and the ejector pin 37 touches and pushes the wedge block 48 in the round opening 38. The wedge block 48 drives the lock block 46 to slide in a direction away from the moving block 41, separating the lock block 46 from the lock groove 42. At the same time, the lock block 46 compresses the sixth spring 47. After the lock block 46 is separated from the lock groove 42, the moving block 41 is unlocked. Under the elastic force of the fifth spring 43, the moving block 41 drives the ejector rod 44 and the push rod 45 to slide, causing the ejector rod 44 to squeeze the convex plate 54. While the moving block 41 slides, the third motor 51 stops working, and the water pump 52 stops pumping water. The convex plate 54 is provided with an arc-shaped notch, and the ejector rod 44 just touches the arc-shaped notch of the convex plate 54. Under the continuous squeezing of the ejector rod 44, the convex plate 54 drives the liquid distribution pipe 53 to rotate around the output end of the water pump 52, disconnecting the liquid outlet 55 on the top side of the liquid distribution pipe 53 from the originally connected infusion pipe 15. Until the liquid outlet 55 is connected to the other end of the next infusion pipe 15 (as shown in the attached Figure 8 of the specification. The state described above is the state of the topmost ejector rod 44. For the convenience of description, the position where the ejector rod 44 is located is set as position one. The ejector rod 44 slides downward and squeezes the convex plate 54, causing the convex plate 54 to rotate clockwise). As shown in the attached Figure 8 of the specification, the moving block 41 in the counterclockwise direction adjacent to position one is in the ejected state, which is set as position two here, and the transmission mechanism 4 here is in the state after the action of position one (that is, the fifth spring 43 is in the natural state, and the wedge block 48 is not engaged with the corresponding lock groove 42). Therefore, when the ejector rod 44 at position one squeezes the convex plate 54, while the convex plate 54 drives the liquid distribution pipe 53 to rotate, it also pushes the ejector rod 44 at position two, causing the ejector rod 44 to drive the moving block 41 to reset. Moreover, due to the special shape design of the arc-shaped notch of the convex plate 54, when the ejector rod 44 at position one drives the convex plate 54 to rotate half a stroke, the moving block 41 and the ejector rod 44 at position two are reset. During the above process, the moving blocks 41 at other positions are always in the state of being locked by the lock block 46.

[0033] While the moving block 41 at position one drives the ejector rod 44 to squeeze the convex plate 54, the push rod 45 also slides inside the housing 11, and its bottom end synchronously drives the corresponding rack 82 to move (the rack 82 corresponding to the moving block 41 locked by the locking block 46 is not meshed and connected to the outer side of the gear ring 81). During the half-stroke rotation of the convex plate 54 driven by the ejector rod 44 at position one, the number of teeth provided on the rack 82 just ensures that it is not meshed and connected to the gear ring 81; during this process, the rack 82 corresponding to position two is meshed and connected to the outer side of the gear ring 81, and the reset of the moving block 41 at position two will drive the separation of this rack 82 from the gear ring 81. When the ejector rod 44 at position one completes driving the convex plate 54 to rotate by half a stroke, the rack 82 corresponding to position two is completely separated from the gear ring 81, and the rack 82 corresponding to position one just meshes with the outer side of the gear ring 81. Subsequently, during the continuous rotation of the convex plate 54, the moving block 41 corresponding to position one drives the push rod 45 to move towards the center of the gear ring 81 (the movement direction of the push rod 45 is marked in the attached Figure 10 instruction manual). The bottom of the push rod 45 is rotatably connected to the corresponding rack 82. As shown in the attached Figure 10 , since a slideway 83 is provided in the middle of the rack 82 and a positioning post 84 is arranged inside the slideway 83, during the movement of the rack 82 driven by the push rod 45, the movement of the rack 82 is restricted by the positioning post 84. Therefore, while the push rod 45 pushes the rack 82 to slide, the rack 82 rotates around the positioning post 84, and the positioning post 84 also slides inside the slideway 83, that is, the rotation center of the rack 82 continuously changes with the movement of the push rod 45, so that the rack 82 can always slide along the tangent direction of the gear ring 81, so as to always be meshed and connected with the rack 82 and drive the gear ring 81 to rotate. The inner side of the gear ring 81 is meshed with the gear 85, thereby driving the gear 85 to rotate. The gear 85 drives the sweeping strip 86 at the bottom of the housing 11 to swing, scraping the lower filter plate 62 at the bottom of the water suction pipe 61, thereby removing the waterweeds and sundries that may adhere to the bottom of the lower filter plate 62 due to the water flowing into the water suction pipe 61, and avoiding the blockage of the lower filter plate 62.

[0034] It should be noted that the purpose of designing the rack 82 in this way is to adapt to the movement track of the push rod 45 (the moving directions of the push rod 45 and the rack 82 are different), so as to achieve the transmission effect.

[0035] Embodiment Three. This embodiment is an explanatory description based on Embodiment One. Specifically, please refer to Figures 1 to 13, the filtering mechanism 6 further includes a lower filter plate 62 installed at the bottom of the water suction pipe 61. A plurality of sliding grooves 63 are circumferentially arrayed on the top surface edge of the lower filter plate 62. Two seventh springs 64 are symmetrically installed in each sliding groove 63. The top surface of the lower filter plate 62 is rotatably connected to an upper filter plate 65. A plurality of sliders 66 are circumferentially arrayed on the bottom surface edge of the upper filter plate 65. Each slider 66 is slidably connected in the corresponding sliding groove 63, and both sides of each slider 66 abut against the corresponding seventh spring 64. A plurality of push blocks 67 are circumferentially arrayed on the top surface edge of the upper filter plate 65.

[0036] An impact mechanism 7 is installed inside the water suction pipe 61. The impact mechanism 7 includes a support cylinder 71 installed on the inner wall of the water suction pipe 61. A rotating rod 72 penetrates through the support cylinder 71, and the bottom end of the rotating rod 72 is rotatably connected to the lower filter plate 62 and the upper filter plate 65. An eighth spring 73 is installed inside the support cylinder 71. A turbine 74 is installed at the top end of the rotating rod 72. A sliding cylinder 75 is slidably connected inside the support cylinder 71. The sliding cylinder 75 is elastically connected to the support cylinder 71 through the eighth spring 73, and the rotating rod 72 penetrates through the sliding cylinder 75. A guide groove 76 is provided inside the sliding cylinder 75. A sliding head 77 is installed on the rotating rod 72, and the sliding head 77 is slidably connected in the guide groove 76. A pressure plate 78 is installed at the bottom of the sliding cylinder 75, and the pressure plate 78 is slidably connected to the rotating rod 72. A plurality of pressure relief plates 79 are annularly arrayed on the outer edge of the pressure plate 78. A rotating shaft 791 is installed on both sides of each pressure relief plate 79. A torsion spring 792 is installed on the rotating shaft 791, and the rotating shaft 791 is elastically connected to the inside of the pressure plate 78 through the torsion spring 792. A plurality of pressure columns 793 are circumferentially arrayed on the bottom surface of the pressure plate 78.

[0037] The water pump 52 drives water to flow inside the water suction pipe 61. The flow of the water body inside the water suction pipe 61 drives the turbine 74 to rotate, thereby driving the rotating rod 72 to rotate inside the support cylinder 71 and the sliding cylinder 75. At the same time, the bottom end of the rotating rod 72 rotates relative to the lower filter plate 62 and the upper filter plate 65. While the rotating rod 72 rotates, it drives the sliding head 77 to slide inside the guide groove 76. The guide groove 76 consists of a section of spiral groove and a section of inclined groove connected end to end with the spiral groove. The sliding head 77 slides from the starting end to the ending end of the spiral groove, causing the sliding cylinder 75 to rise, thereby driving the pressure plate 78 to rise, and the sliding cylinder 75 slides inside the support cylinder 71, compressing the eighth spring 73; subsequently, the sliding head 77 slides from the ending end of the spiral groove into the inclined groove, and the sliding head 77 slides inside the inclined groove. The elastic force of the eighth spring 73 pushes the sliding cylinder 75 to quickly descend. On the one hand, it makes the sliding head 77 return to the starting end of the spiral groove; on the other hand, it makes the sliding cylinder 75 slide downward, driving the pressure plate 78 to descend. During the rising process of the pressure plate 78, the water inside the water suction pipe 61 generates resistance to the pressure reducing plate 79, causing the pressure reducing plate 79 to drive the rotating shaft 791 to rotate inside the pressure plate 78 and making the torsion spring 792 store energy. The pressure reducing plate 79 flips, increasing the hollow area of the pressure plate 78, thereby reducing the water body obstruction. During the descending process of the pressure plate 78, since the rotating shaft 791 is installed at one-third of the side of the pressure reducing plate 79 (the rotating shaft 791 is close to the inner ring of the pressure reducing plate 79), and the outer edge of the pressure reducing plate 79 abuts against the outer edge of the pressure plate 78, therefore, under the action of the water resistance, the pressure reducing plate 79 does not rotate upward but closes part of the space of the pressure plate 78. In this way, when the pressure plate 78 moves downward, the pressure reducing plate 79 increases the resistance, and part of the water inside the water suction pipe 61 can be pushed downward (the inner ring of the pressure plate 78 is hollow, and it will not completely drive the water body to flow or block the water flow), thereby driving the water flow to scour the lower filter plate 62 and the upper filter plate 65, removing the impurities attached to the lower filter plate 62 and the upper filter plate 65, avoiding the impurities in the water body from blocking the lower filter plate 62 and the upper filter plate 65, and further improving the effect of removing impurities in the water.

[0038] When the pressure plate 78 descends to be close to the upper filter plate 65, the pressure column 793 at the bottom of the pressure plate 78 abuts against and squeezes the corresponding push block 67 on the top surface of the upper filter plate 65, causing the upper filter plate 65 to have a relative displacement with the lower filter plate 62. Also, since the sliding block 66 on the bottom surface of the upper filter plate 65 slides inside the corresponding sliding groove 63, therefore, the upper filter plate 65 rotates relative to the lower filter plate 62. During the sliding process of the sliding block 66, the seventh spring 64 inside the corresponding sliding groove 63 is compressed. During the relative rotation process of the upper filter plate 65 and the lower filter plate 62, the meshes of the two are misaligned, thereby pulling and cutting the impurities in the meshes of the lower filter plate 62 and the upper filter plate 65, thus removing the impurities in the meshes, improving the cleaning effect again, and avoiding the blockage of the lower filter plate 62 and the upper filter plate 65.

[0039] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, based on the above description, other different forms of changes or variations can be made. It is impossible to enumerate all the implementation manners here. Any obvious changes or variations derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A sampling device for occupational health assessment and detection, comprising a main body (1), characterized in that: The main body mechanism (1) comprises a shell (11), a top surface of the shell (11) being symmetrically provided with a plurality of mounting grooves (13), and a plurality of infusion tubes (15) corresponding to the mounting grooves (13) being symmetrically provided inside the shell (11); A moving mechanism (2) is mounted on the housing (11), and the moving mechanism (2) comprises a propeller (23) and a deflection plate (29) mounted on the bottom surface of the housing (11); A storage mechanism (3) is installed inside the installation groove (13), and the storage mechanism (3) comprises a sample bottle (31) installed inside each installation groove (13), and a connecting port (32) is provided on the top side of the sample bottle (31), and the connecting port (32) is connected to one end of a corresponding infusion tube (15); A sampling mechanism (5) is installed inside the housing (11), and the sampling mechanism (5) comprises a water pump (52) installed inside the housing (11); an output end of the water pump (52) is rotatably connected to a liquid dispensing tube (53); a liquid outlet (55) is provided on a top side surface of the liquid dispensing tube (53); and the liquid outlet (55) is communicated with the other end of each of the infusion tubes (15); A filtering mechanism (6) is installed inside the housing (11), and the filtering mechanism (6) comprises a water drawing pipe (61) installed at the input end of the water pump (52).

2. The sampling device for occupational health evaluation and detection according to claim 1 is characterized in that: The main body mechanism (1) further comprises a control unit (12) mounted on the top surface of the shell (11); an inner cavity (14) for mounting a sampling mechanism (5) is provided inside the shell (11); the other end of the infusion tube (15) is connected to the inner cavity (14); a first spring (16) and a liquid injection head (17) are mounted inside one end of each of the infusion tubes (15); the liquid injection head (17) is elastically connected to the inside of one end of the infusion tube (15) via the first spring (16).

3. The sampling device for occupational health evaluation and detection according to claim 1 is characterized in that: The moving mechanism (2) further comprises a first motor (21) and a waterproof cover (27) mounted on the top of the housing (11); an output shaft of the first motor (21) passes through the housing (11); a protective shell (22) is mounted on the bottom surface of the housing (11); the propeller (23) is rotatably connected inside the protective shell (22); a closed sleeve (24) is mounted on the back of the protective shell (22); an end of the output shaft of the first motor (21) is located inside the closed sleeve (24); and a first protective cover (27) is mounted on the output shaft of the first motor (21). a bevel gear (25), a second bevel gear (26) is mounted on the propeller (23), the first bevel gear (25) is meshingly connected with the second bevel gear (26), a second motor (28) is mounted in the waterproof cover (27), another first bevel gear (25) is mounted at the output end of the second motor (28), another second bevel gear (26) meshingly connected with the first bevel gear (25) is also mounted in the waterproof cover (27), and the second bevel gear (26) is mounted on the direction-changing plate (29).

4. The sampling device for occupational health evaluation and detection according to claim 1, characterized in that: The storage mechanism (3) further comprises a third spring (33) and a sealing plate (34) installed inside the connecting port (32); the sealing plate (34) is elastically connected to the inside of the connecting port (32) via the third spring (33); a fourth spring (35) and a piston (36) are installed inside the sample bottle (31); the piston (36) is elastically connected to the inside of the sample bottle (31) via the fourth spring (35); a top column (37) is installed on the bottom surface of the piston (36); and a round opening (38) is provided at the bottom of the sample bottle (31).

5. The sampling device for occupational health evaluation and detection according to claim 2, characterized in that: A transmission mechanism (4) is provided at the bottom of each mounting groove (13), the transmission mechanism (4) comprising a shifting block (41) and a fifth spring (43) installed in the housing (11) at the bottom end of each mounting groove (13), and the shifting block (41) is elastically connected to the inside of the housing (11) through the fifth spring (43), a locking groove (42) is provided on the side of the shifting block (41), a push rod (44) is installed on the top surface of the end of the shifting block (41), and a push rod (45) is installed on the bottom surface of the end of the shifting block (41), and a plurality of locking blocks (46) and a sixth spring (47) are also installed inside the housing (11), the locking blocks (46) are elastically connected to the inside of the housing (11) through the corresponding sixth springs (47), and the locking blocks (46) are engaged with the locking grooves (42) on the corresponding shifting blocks (41), and a wedge block (48) is fixed to the top of the locking blocks (46).

6. The sampling device for occupational health evaluation and detection according to claim 5, characterized in that: The sampling mechanism (5) further comprises a third motor (51) installed inside the inner cavity (14), the output end of the third motor (51) being connected to the inside of the water pump (52), a convex plate (54) being installed on the outer wall of the liquid dispensing tube (53), and a plurality of the push rods (44) all abut against the side surface of the convex plate (54).

7. The sampling device for occupational health evaluation and detection according to claim 5, characterized in that: The filtering mechanism (6) also includes a lower filter plate (62) installed at the bottom of the water drawing pipe (61), the top edge of the lower filter plate (62) has a plurality of slide grooves (63) arranged in a circular array, and each of the slide grooves (63) has two seventh springs (64) symmetrically installed therein, the top surface of the lower filter plate (62) is rotatably connected to an upper filter plate (65), the bottom edge of the upper filter plate (65) has a plurality of sliders (66) arranged in a circular array, each slider (66) is slidably connected to the corresponding slide groove (63), and both sides of each slider (66) abut against the corresponding seventh spring (64), and the top edge of the upper filter plate (65) has a plurality of push blocks (67) arranged in a circular array.

8. The sampling device for occupational health assessment and detection according to claim 7, characterized in that: An impact mechanism (7) is installed inside the water-drawing pipe (61), and the impact mechanism (7) includes a support tube (71) installed on the inner wall of the water-drawing pipe (61), a rotating rod (72) passes through the support tube (71), and the bottom end of the rotating rod (72) is rotatably connected to the lower filter plate (62) and the upper filter plate (65), an eighth spring (73) is installed in the support tube (71), a turbine (74) is installed at the top of the rotating rod (72), and a slide tube (75) is slidably connected inside the support tube (71), and the slide tube (75) is elastically connected to the support tube (71) through the eighth spring (73), and the rotating rod (72) passes through the slide tube (75). A guide groove (76) is provided in the slide cylinder (75), a slider (77) is installed on the rotating rod (72), and the slider (77) is slidably connected in the guide groove (76). A pressure plate (78) is installed at the bottom of the slide cylinder (75), and the pressure plate (78) is slidably connected to the rotating rod (72). A plurality of pressure relief plates (79) are arranged in a circular array on the outer edge of the pressure plate (78), and a rotating shaft (791) is installed on both sides of each pressure relief plate (79), a torsion spring (792) is installed on the rotating shaft (791), and the rotating shaft (791) is elastically connected to the inside of the pressure plate (78) through the torsion spring (792), and a plurality of pressure columns (793) are arranged in a circular array on the bottom surface of the pressure plate (78).

9. The sampling device for occupational health evaluation and detection according to claim 7, characterized in that: A sweeping mechanism (8) is installed inside the bottom surface of the shell (11). The sweeping mechanism (8) comprises a gear ring (81) installed inside the bottom surface of the shell (11). A plurality of racks (82) are arranged in a circumferential array inside the bottom end of the shell (11). The plurality of racks (82) are meshingly connected to the outer side of the gear ring (81), and the end of each rack (82) is rotatably connected to the bottom end of the corresponding push rod (45). A slideway (83) is provided on the rack (82). A plurality of positioning columns (84) are installed inside the shell (11). Each positioning column (84) is slidably connected to the corresponding slideway (83). A gear (85) is installed inside the shell (11). The gear (85) is meshingly connected to the inner side of the gear ring (81). A sweeping bar (86) is installed at the bottom of the gear (85). The sweeping bar (86) swings on the bottom surface of the water-drawing pipe (61).

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