Automatic rainfall sample collection device for environmental monitoring and use method thereof

Abstract

The invention discloses an automatic rainfall sample collecting device for environmental monitoring and a using method thereof, and relates to the technical field of environmental monitoring sampling, the automatic rainfall sample collecting device comprises a collecting barrel, a sampling barrel lifting guide assembly and a sampling barrel descending control unit, an operation groove is formed in one side of the bottom of the collecting barrel, and a rainfall collecting unit is arranged in the collecting barrel; the sampling barrel lifting guide assembly is mounted at the bottom in the collecting barrel; large sundries can be shielded through a large sundry shielding unit, large garbage or leaves are prevented from falling into a collecting barrel in a strong wind environment, and after the sampling barrel is full of collected water, a sampling barrel lifting guide assembly can descend, so that a sampling barrel inlet sealing unit at the top of the sampling barrel is separated from the bottom of a rainfall collecting unit, and the sampling barrel is closed. At the moment, the top of the sampling barrel is sealed by the sampling barrel inlet sealing unit, it can be ensured that rainfall collected in the sampling barrel does not make contact with the external environment any more, the sampling reliability can be ensured, and environment monitoring and analysis are facilitated.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring sampling technology, specifically to an automatic precipitation sample collection device for environmental monitoring and its usage method. Background Technology

[0002] Currently, environmental monitoring refers to the activities of environmental monitoring agencies in monitoring and measuring the environmental quality status. Environmental monitoring is carried out by monitoring and measuring indicators that reflect environmental quality in order to determine the level of environmental pollution and the quality of the environment. With the discharge of a large amount of industrial gases, the water quality of precipitation has been polluted. Therefore, when monitoring precipitation, it is necessary to collect and sample rainwater first.

[0003] Existing automatic precipitation sampling devices cannot automatically detach from the rainwater collection device after the collection is full. As precipitation continues, the sampled rainwater is easily contaminated, reducing the reliability of the sampled precipitation and hindering environmental monitoring. If strong winds blow during rain, large pieces of garbage or leaves can easily fall into the collection tube, affecting precipitation sampling. Summary of the Invention

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide an automatic precipitation sample collection device and its usage method for environmental monitoring. A large debris shielding unit can block large debris, preventing large pieces of garbage or leaves from falling into the collection bin in windy conditions and thus avoiding blockage of rainwater collection. Once the sampling bin is full, the sampling bin lifting guide assembly descends, disengaging the sampling bin inlet sealing unit at the top of the sampling bin from the bottom of the precipitation collection unit. At this point, the top of the sampling bin is sealed by the sampling bin inlet sealing unit, ensuring that the collected precipitation no longer comes into contact with the external environment. This prevents the internal samples from being contaminated due to continuous opening of the sampling bin, ensuring sampling reliability and facilitating environmental monitoring and analysis. This effectively solves the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic precipitation sample collection device for environmental monitoring, comprising:

[0006] The collection cylinder has an operating slot on one side of its bottom, and a rainwater collection unit is installed inside the collection cylinder;

[0007] A sampling barrel lifting and guiding assembly is installed at the bottom of the collection barrel. A sampling barrel is placed on the top of the sampling barrel lifting and guiding assembly. A sampling barrel inlet sealing unit is installed on the top of the sampling barrel. The top of the sampling barrel inlet sealing unit is connected to the bottom of the precipitation collection unit.

[0008] The sampling barrel descent control unit includes a mounting sleeve, a sliding disc, a cylinder, a wedge-shaped control block, a sliding lever, and a control spring. The mounting sleeve is fixedly connected to one side of the bottom of the collection barrel. A horizontal notch is provided on the side of the mounting sleeve. The sliding disc is slidably connected inside the mounting sleeve. A cylinder is fixedly connected to the middle of the sliding disc. A wedge-shaped control block is fixedly connected to the outer end of the cylinder. A wedge-shaped surface is provided on the upper side of the wedge-shaped control block. The sliding disc is connected to the inner end of the mounting sleeve through the control spring. A sliding lever is provided on the side of the sliding disc and slidably connected to the notch.

[0009] During rainfall, rainwater falls from the top of the collection cylinder onto the precipitation collection unit, where it is collected and then enters the sampling barrel through the sampling barrel inlet sealing unit. Once the sampling barrel is full of collected precipitation, its weight is sufficient. At this point, the sampling barrel lifting guide assembly presses down on the wedge-shaped surface of the wedge-shaped control block, pushing the wedge-shaped control block open through a lateral force. This lateral force from the wedge-shaped control block pushes the sliding disc along the mounting sleeve through the cylinder, compressing the control spring. Then, the sampling barrel lifting guide assembly and the sampling barrel descend as a whole. At this point, the sampling barrel inlet sealing unit at the top of the sampling barrel detaches from the bottom of the precipitation collection unit, sealing the top of the sampling barrel and ensuring that the precipitation inside the sampling barrel is isolated from the outside environment, preventing contamination and ensuring high sampling reliability. To resample, the sliding lever needs to be moved to return the lifting part of the sampling barrel lifting guide assembly to the top of the wedge-shaped control block, and the sampling barrel is placed back on the sampling barrel lifting guide assembly, repeating the above steps.

[0010] Furthermore, the sampling bucket lifting guide assembly includes a lifting tray, guide rings, guide posts, limiting semicircular sleeves, limiting support rings, and protrusions. The outer side of the lifting tray is provided with no fewer than two guide rings. A guide post is vertically slidably connected inside the guide ring. The bottom of the guide post is fixedly connected to the bottom of the collection tube. A limiting support ring is also fixed to the bottom of the guide post. A limiting semicircular sleeve is provided on the upper side of the lifting tray. A protrusion corresponding to and cooperating with the wedge-shaped control block is provided on the outer periphery of the lifting tray.

[0011] The limiting semicircular sleeve on the lifting tray positions the bottom of the sampling bucket, ensuring that the sampling bucket inlet sealing unit at the top of the sampling bucket is aligned with the precipitation collection unit. The guide ring and guide column guide the lifting tray to move only up and down. The limiting ring prevents the lifting tray from falling too far and damaging the contact switch below. The protrusion and wedge control block prevent the lifting tray from falling.

[0012] Furthermore, the precipitation collection unit includes a collection hopper, a collection pipe, a rubber stopper, a fixing frame, and a pin. The collection hopper is fixedly connected inside the collection cylinder, and the bottom of the collection hopper is connected to the top of the collection pipe. A rubber stopper is provided at the bottom of the collection pipe, and an insertion slot is provided in the middle of the rubber stopper. A pin is fixedly connected inside the collection pipe through the fixing frame.

[0013] The collecting hopper collects precipitation into the collecting pipe, and the rubber stopper can seal the bottom of the collecting pipe. The fixing bracket is used to fix the pin, which can cooperate with the insertion tube at the top of the sampling barrel inlet sealing unit, so that the precipitation in the collecting pipe can enter the sampling barrel through the insertion tube.

[0014] Furthermore, the precipitation collection unit also includes a drain pipe and a solenoid valve. The bottom side of the collection pipe is connected to the drain pipe, and the other end of the drain pipe extends to the outside of the collection cylinder. A solenoid valve is connected in series on the drain pipe.

[0015] When the sampling bucket is full of precipitation samples, if the bucket is too heavy, the sampling bucket and lifting tray will be lowered by the sampling bucket lowering control unit. At this time, the solenoid valve will be opened, and the excess water in the collection pipe will be discharged through the drain pipe without affecting the next sampling.

[0016] Furthermore, it also includes a mounting base and a contact switch. The contact switch is mounted on the bottom of the collecting cylinder via the mounting base, and the output end of the contact switch is electrically connected to the input end of the solenoid valve.

[0017] The mounting base is used to install the contact switch. The contact switch is slightly higher than the limit ring to ensure that the contact switch can be triggered when the lifting tray is lowered and limited by the limit ring. The contact switch opens the solenoid valve and discharges excess water in the collection pipe through the drain pipe.

[0018] Furthermore, the sampling bucket inlet sealing unit includes a bucket lid, a tube, and a one-way top valve assembly. The bucket lid is threadedly connected to the top opening of the sampling bucket. A tube is fixedly connected to the top center of the bucket lid. The tube is inserted into the slot in the middle of the rubber stopper. A one-way top valve assembly is installed inside the tube.

[0019] The top of the sampling bucket is sealed by a bucket lid. The insertion tube can be inserted into the rubber stopper to connect to the collection pipe. The one-way top valve assembly can be opened by the pin, allowing the precipitation in the collection pipe to fall into the sampling bucket through the insertion tube to achieve sampling.

[0020] Furthermore, it also includes a precipitation filtration unit, which is installed at the top of the collection cylinder and has a filter cloth water extrusion assembly. The precipitation filtration unit can filter the rainfall, preventing impurities in the rainwater from entering the sampling cylinder and affecting the precipitation samples.

[0021] Furthermore, it also includes a top sealing unit. The top of the collection cylinder is equipped with a top sealing unit that seals the top of the collection cylinder. The top sealing unit can open the top of the collection cylinder during sampling, and close the top of the collection cylinder when the sampling cylinder is full, thus saving the use of the rainwater filtration unit.

[0022] Furthermore, it also includes a large debris shielding unit. The outer side of the collection tube is equipped with a large debris shielding unit. The large debris shielding unit can use a fence-like structure to shield large debris carried by rainwater during wind and rain, so as to prevent large debris from falling into the collection tube and affecting sampling.

[0023] A method for using an automatic precipitation sample collection device for environmental monitoring includes the following steps;

[0024] Step 1: When it rains, the fence on top of the large debris blocking unit is raised, the top sealing unit opens the top of the collection tube, the sampling tube inlet sealing unit is installed on the top of the sampling tube, and then the sampling tube is placed on the lifting tray.

[0025] Step two, then move the sliding lever to make the sliding disc slide and compress the control spring in the mounting sleeve, lift the lifting tray upward, and extend the top of the insertion tube through the insertion slot into the manifold. The ejector pin pushes open the one-way valve assembly, so that the barrel cover insertion tube and the manifold are connected.

[0026] Step 3: When the lifting tray is lifted, the protrusion is above the wedge-shaped control block. Then, release the sliding lever to control the spring to rebound, so that the wedge-shaped surface of the wedge-shaped control block supports the protrusion.

[0027] Step four: After being filtered by the precipitation filtration unit, the rainwater falls into the collection hopper and then enters the sampling bucket through the collection pipe and the insertion tube.

[0028] Step 5: Once the sampling bucket is filled with rainwater, the protrusion presses against the wedge-shaped control block and moves laterally, compressing the control spring. The sliding disc slides into the mounting sleeve, and the lifting tray descends along the guide column via the guide ring. The sampling bucket inlet sealing unit disengages from the rubber plug at the bottom of the collecting pipe.

[0029] Step six: The bottom of the lifting tray contacts the contact switch on the mounting base. The contact switch controls the solenoid valve to open, and the rainwater in the collection pipe is discharged through the drain pipe. Then, the contact switch controls the top sealing unit to close the top of the collection cylinder.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: The automatic precipitation sample collection device and its method for environmental monitoring have the following advantages:

[0031] 1. During rainfall, rainwater falls from the top of the collection cylinder onto the precipitation collection unit, where it is collected and then enters the sampling cylinder through the sampling cylinder inlet sealing unit. Once the sampling cylinder is full of collected precipitation, its weight is sufficient to cause the sampling cylinder lifting guide assembly to descend via the sampling cylinder descent control unit. At this point, the sampling cylinder inlet sealing unit at the top of the sampling cylinder detaches from the bottom of the precipitation collection unit, sealing the top of the sampling cylinder and ensuring that the precipitation inside the sampling cylinder is isolated from the outside environment, preventing contamination of the collected precipitation and ensuring high sampling reliability.

[0032] 2. The large debris blocking unit can block large debris, preventing large pieces of garbage or leaves from falling into the collection bin in windy conditions, and preventing these debris from clogging the rainwater collection and falling. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the automatic precipitation sample collection device for environmental monitoring according to the present invention.

[0034] Figure 2 This invention relates to an automatic precipitation sample collection device for environmental monitoring. Figure 1 A magnified view of the structure at point A in the middle;

[0035] Figure 3 This is a top view schematic diagram of the automatic precipitation sample collection device for environmental monitoring according to the present invention;

[0036] Figure 4 This invention relates to an automatic precipitation sample collection device for environmental monitoring. Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0037] Figure 5 This is a partial cross-sectional structural diagram of the automatic precipitation sample collection device for environmental monitoring according to the present invention.

[0038] Figure 6 This invention relates to an automatic precipitation sample collection device for environmental monitoring. Figure 5 A magnified schematic diagram of the structure at point C in the middle;

[0039] Figure 7 This invention relates to an automatic precipitation sample collection device for environmental monitoring. Figure 5 A magnified schematic diagram of the structure at point D in the middle;

[0040] Figure 8 This is a schematic diagram of the filter cloth water extrusion component of the automatic precipitation sample collection device for environmental monitoring according to the present invention.

[0041] In the diagram: 1. Collection cylinder, 2. Operating trough, 3. Rainwater collection unit, 31. Collection bucket, 32. Collection pipe, 33. Rubber plug, 34. Fixing frame, 35. Pin, 36. Drainage pipe, 37. Solenoid valve, 4. Rainwater filtration unit, 41. Conical filter screen, 42. Conical filter cloth, 43. Lower fixing ring, 44. Groove, 45. Removal bolt, 46. Upper fixing ring, 47. Rubber ring, 48. Arc-shaped deep groove, 49. Pull rod, 410. Pull ring, 5. Sampling barrel lifting guide assembly, 51. Lifting tray, 52. Guide ring, 53. Guide column, 54. Limiting semi-circular sleeve, 55. Limiting support ring, 56. Protrusion, 6. Sampling barrel descent control unit, 61. Mounting sleeve, 62. Sliding disc, 63. Cylinder, 64. Wedge-shaped control block, 65. Sliding lever, 66. Control spring, 7. Top sealing unit, 71. Ear plate, 72. Top sealing motor 73 Rotary shaft, 74 Convex plate, 75 Top sealing plate, 76 Sealing ring, 8 Large debris shielding unit, 81 Side plate, 82 Screw, 83 Lifting motor, 84 Sliding column, 85 Inner ear plate, 86 Limit nut, 87 Circular ring, 88 Arc-shaped notch, 89 Fence post, 810 Top ring, 9 Sampling barrel inlet sealing unit, 91 Barrel lid, 92 Insert tube, 93 Mounting bracket, 94 Telescopic rod, 95 Spring, 96 Top column, 97 Sealing plug, 98 Sealing ring, 10 Filter cloth water extrusion assembly, 101 Embedded ring, 102 Rotating column, 103 Turning handle, 104 Inner shaft, 105 Squeezing roller, 11 Sampling barrel, 12 Waterproof edge, 13 Circular track, 14 Arc-shaped door, 15 Door handle, 16 Controller, 17 Fixed ear seat, 18 Mounting round seat, 19 Contact switch. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1, please refer to Figure 1-8 This embodiment provides a technical solution: an automatic precipitation sample collection device for environmental monitoring, including a collection tube 1, a sampling tube lifting and guiding assembly 5, and a sampling tube lowering control unit 6;

[0044] An operation slot 2 is provided on one side of the bottom of the collection cylinder 1, and a rainwater collection unit 3 is provided inside the collection cylinder 1;

[0045] An annular track 13 is fixedly connected to the outer side of the collection cylinder 1 at the top of the operating slot 2. An arc-shaped door 14 is slidably connected to the annular track 13. A door handle 15 is provided on one side of the arc-shaped door 14. The arc-shaped door 14 can be pulled along the annular track 13 by the door handle 15, thereby opening or closing the operating slot 2. A controller 16 is provided inside the collection cylinder 1. A waterproof rim 12 is provided on the outer side of the collection cylinder 1 directly above the operating slot 2. The waterproof rim 12 can protect the operating slot 2 from rain. Fixed lugs 17 are arranged in an annular array on the outer bottom of the collection cylinder 1. They can be fixed in the required position with bolts.

[0046] The precipitation collection unit 3 includes a collection bucket 31, a collection pipe 32, a rubber stopper 33, a fixing frame 34, and a pin 35. The collection bucket 31 is fixedly connected inside the collection cylinder 1. The bottom of the collection bucket 31 is connected to the top of the collection pipe 32. The bottom of the collection pipe 32 is provided with a rubber stopper 33. The middle of the rubber stopper 33 is provided with an insertion slot. The pin 35 is fixedly connected inside the collection pipe 32 through the fixing frame 34.

[0047] The collecting hopper 31 collects the rainwater into the collecting pipe 32. The rubber stopper 33 can seal the bottom of the collecting pipe 32. The fixing bracket 34 is used to fix the pin 35. The pin 35 can cooperate with the insertion tube 92 at the top of the sampling barrel inlet sealing unit 9, so that the rainwater in the collecting pipe 32 can enter the sampling barrel 11 through the insertion tube 92.

[0048] The rainwater collection unit 3 also includes a drain pipe 36 and a solenoid valve 37. The bottom side of the collection pipe 32 is connected to the drain pipe 36, and the other end of the drain pipe 36 extends to the outside of the collection cylinder 1. The solenoid valve 37 is connected in series on the drain pipe 36.

[0049] When the sampling bucket 11 is full of precipitation samples, the sampling bucket 11 becomes too heavy. The sampling bucket descent control unit 6 lowers the sampling bucket 11 and the lifting tray 51. At this time, the solenoid valve 37 is opened, and the excess water in the collection pipe 32 is discharged through the drain pipe 36 without affecting the next sampling.

[0050] It also includes a mounting base 18 and a contact switch 19. The contact switch 19 is mounted on the bottom of the collection tube 1 via the mounting base 18. The output end of the contact switch 19 is electrically connected to the input end of the solenoid valve 37. The contact switch 19 controls the operation of the solenoid valve 37 using a method commonly used in the prior art.

[0051] The mounting base 18 is used to install the contact switch 19. The contact switch 19 is slightly higher than the limit ring 55 to ensure that the contact switch 19 can be triggered when the lifting tray 51 is lowered and limited by the limit ring 55. The solenoid valve 37 is opened by the contact switch 19 to discharge the excess water in the manifold 32 through the drain pipe 36.

[0052] The sampling bucket lifting guide assembly 5 is installed at the bottom of the collection cylinder 1. The sampling bucket 11 is placed on the top of the sampling bucket lifting guide assembly 5. The sampling bucket inlet sealing unit 9 is installed on the top of the sampling bucket 11. The top of the sampling bucket inlet sealing unit 9 is connected to the bottom of the precipitation collection unit 3.

[0053] The sampling bucket lifting guide assembly 5 includes a lifting tray 51, a guide ring 52, a guide post 53, a limiting semicircular sleeve 54, a limiting support ring 55, and a protrusion 56. The outer side of the lifting tray 51 is provided with no less than two guide rings 52. The guide post 53 is vertically slidably connected inside the guide ring 52. The bottom of the guide post 53 is fixedly connected to the bottom of the collection tube 1. The bottom of the guide post 53 is also fixed with a limiting support ring 55. The upper side of the lifting tray 51 is provided with a limiting semicircular sleeve 54. The outer periphery of the lifting tray 51 is provided with a protrusion 56 that corresponds to and cooperates with the wedge-shaped control block 64.

[0054] The limiting semicircular sleeve 54 on the lifting tray 51 positions the bottom of the sampling bucket 11, ensuring that the sampling bucket inlet sealing unit 9 at the top of the sampling bucket 11 is aligned with the rainwater collection unit 3. The guide ring 52 and the guide column 53 guide the lifting tray 51 to move only up and down. The limiting ring 55 prevents the lifting tray 51 from falling too far and damaging the contact switch 19 below. The protrusion 56 and the wedge-shaped control block 64 prevent the control of whether the lifting tray 51 can fall.

[0055] The sampling bucket inlet sealing unit 9 includes a bucket cover 91, a tube 92 and a one-way top valve assembly. The bucket cover 91 is threaded to the top opening of the sampling bucket 11. The tube 92 is fixedly connected to the center of the top of the bucket cover 91. The tube 92 is inserted into the slot in the middle of the rubber stopper 33. The one-way top valve assembly is installed inside the tube 92.

[0056] The top of the sampling bucket 11 is sealed by the bucket lid 91. The insertion tube 92 can be inserted into the rubber stopper 33 to connect the collection pipe 32. The one-way top valve assembly can be opened by the pin 35, so that the precipitation in the collection pipe 32 falls into the sampling bucket 11 through the insertion tube 92 to achieve sampling.

[0057] The one-way top valve assembly includes a mounting bracket 93, a telescopic rod 94, a spring 95, a top post 96, a sealing plug 97, and a sealing ring 98. A sealing ring 98 is located at the top of the insertion tube 92. The inner diameter of the sealing ring 98 is larger than the outer diameter of the top post 35 to ensure that the top post 35 does not completely block the sealing ring 98. The mounting bracket 93 is fixedly connected to the insertion tube 92 below the sealing ring 98. The bottom end of the telescopic rod 94 is fixedly connected to the middle of the mounting bracket 93, and the top post 96 is fixedly connected to the top of the telescopic rod 94. A spring 95 is sleeved on the rod 94, and a sealing plug 97 is fixedly sleeved on the outer side of the top of the top post 96. The rebound force of the spring 95 can extend the telescopic rod 94. By moving the top post 96 and the sealing plug 97 upward, the bottom of the sealing ring 98 can be sealed. When the pin 35 moves downward against the top post 96 and the sealing plug 97, it compresses the spring 95. At this time, the rainwater in the collection pipe 32 can enter the bucket cover 91 through the insertion tube 92 and the sealing ring 98, and finally fall into the sampling bucket 11 to achieve precipitation sampling.

[0058] The sampling barrel descent control unit 6 includes a mounting sleeve 61, a sliding disc 62, a cylinder 63, a wedge-shaped control block 64, a sliding lever 65, and a control spring 66. The mounting sleeve 61 is fixedly connected to one side of the bottom of the collection barrel 1. A horizontal notch is provided on the side of the mounting sleeve 61. The sliding disc 62 is slidably connected inside the mounting sleeve 61. The cylinder 63 is fixedly connected to the middle of the sliding disc 62. The wedge-shaped control block 64 is fixedly connected to the outer end of the cylinder 63. A wedge-shaped surface is provided on the upper side of the wedge-shaped control block 64. The sliding disc 62 is connected to the inner end of the mounting sleeve 61 through the control spring 66. A sliding lever 65 is provided on the side of the sliding disc 62 and slidably connected to the notch.

[0059] During rainfall, rainwater falls from the top of the collection cylinder 1 onto the precipitation collection unit 3, where it is collected. The rainwater then enters the sampling barrel 11 through the sampling barrel inlet sealing unit 9. Once the sampling barrel 11 is full of collected rainwater, its weight is sufficient. At this point, the sampling barrel lifting guide assembly 5 presses against the wedge-shaped surface of the wedge-shaped control block 64, pushing the wedge-shaped control block 64 open through a lateral force. This lateral force from the wedge-shaped control block 64 pushes the sliding disk 62 along the mounting sleeve 61 via the cylinder 63, compressing the control spring 66, and then sampling begins. The sampling bucket lifting guide assembly 5 and the sampling bucket 11 descend as a whole. At this time, the sampling bucket inlet sealing unit 9 at the top of the sampling bucket 11 disengages from the bottom of the precipitation collection unit 3. The sampling bucket inlet sealing unit 9 seals the top of the sampling bucket 11, ensuring that the precipitation inside the sampling bucket 11 is isolated from the outside world, so that the collected precipitation is not contaminated and the sampling reliability is high. When sampling is required again, the sliding block 65 needs to be moved so that the lifting part of the sampling bucket lifting guide assembly 5 is back on the upper side of the wedge control block 64, and the sampling bucket 11 is placed on the sampling bucket lifting guide assembly 5 again to repeat the above steps.

[0060] Example 2, please refer to Figure 1-8 This embodiment provides a technical solution: an automatic precipitation sample collection device for environmental monitoring. This embodiment is structurally similar to Embodiment 1, with the difference being:

[0061] It also includes a precipitation filtration unit 4, which is installed at the top of the collection cylinder 1, and a filter cloth water extrusion assembly 10 is installed on the precipitation filtration unit 4. The precipitation filtration unit 4 can filter the rainwater to prevent impurities in the rainwater from entering the sampling cylinder 11 and affecting the precipitation sample.

[0062] The rainwater filtration unit 4 includes a conical filter screen 41, a conical filter cloth 42, a lower fixing ring 43, a groove 44, a disassembly bolt 45, an upper fixing ring 46, and a rubber ring 47. A conical filter screen 41 is fixedly connected to the top of the collection cylinder 1. A conical filter cloth 42 is installed on the conical filter screen 41. The conical filter cloth 42 filters impurities in the rainwater. An upper fixing ring 46 is installed on the upper edge of the conical filter cloth 42, and a lower fixing ring 43 is installed on the lower edge of the conical filter cloth 42. A groove 47 is arranged in a ring array at the bottom of the lower fixing ring 43. 4. A disassembly bolt 45 is provided in the groove 44. The disassembly bolt 45 detachably connects the lower fixed ring 43 and the upper fixed ring 46 together. The bottom of the lower fixed ring 43 is connected to the annular groove on the upper edge of the conical filter screen 41 to avoid the lower fixed ring 43 causing a large gap between the conical filter screen 41 and the conical filter cloth 42. A rubber ring 47 is snapped on the upper side of the upper fixed ring 46. The rubber ring 47 cooperates with the inner wall of the collection cylinder 1 to prevent debris from being left in the gap between the upper fixed ring 46 and the collection cylinder 1, which would be inconvenient to clean.

[0063] The precipitation filtration unit 4 also includes an arc-shaped deep groove 48, a pull rod 49, and a pull ring 410. The top inner wall of the collection cylinder 1 is provided with two arc-shaped deep grooves 48. The top of the upper fixed ring 46 is provided with two pull rods 49 that cooperate with the arc-shaped deep grooves 48. The top of the two pull rods 49 is fixedly connected to the pull ring 410. The arc-shaped deep grooves 48 facilitate the installation of the pull rods 49. The upper fixed ring 46 can be pulled out by using the pull ring 410 in conjunction with the pull rods 49. By removing the conical filter cloth 42, the lower fixed ring 43, the disassembly bolt 45, the upper fixed ring 46, and the rubber ring 47, the lower fixed ring 43 and the upper fixed ring 46 can be disassembled by the disassembly bolt 45. The conical filter cloth 42 can be replaced, which can solve the problem of reduced filtration effect of the conical filter cloth 42 after long-term use.

[0064] The filter cloth water extrusion assembly 10 includes an inner ring 101, a rotating column 102, a handle 103, an inner shaft 104, and a squeezing roller 105. The inner ring 101 is fixedly connected to the middle of the conical filter screen 41. The rotating column 102 is inserted into the inner ring 101. The handle 103 is fixedly connected to the top of the rotating column 102. The inner shaft 104 is fixedly connected to the side of the rotating column 102. The squeezing roller 105 is rotatably connected to the inner shaft 104. The squeezing roller 105 is in rolling contact with the upper side of the conical filter cloth 42.

[0065] The rotating column 102 can be rotated and pressed by the throttle 103. The rotating column 102 drives the squeezing roller 105 to roll on the upper side of the conical filter cloth 42 through the inner shaft 104. This can squeeze out the water from the conical filter cloth 42 and the impurities on it. This allows for the reuse of precipitation sampling when there is little rainfall, and reduces the water adhering to the conical filter cloth 42. It also facilitates the measurement of precipitation through the sampling bucket 11, thus realizing precipitation monitoring in environmental monitoring.

[0066] Example 3, please refer to Figure 1-8 This embodiment provides a technical solution: an automatic precipitation sample collection device for environmental monitoring. This embodiment is structurally similar to Embodiment 2, with the difference being:

[0067] It also includes a top sealing unit 7. The top of the collection cylinder 1 is equipped with a top sealing unit 7 to seal the top of the collection cylinder 1. The top sealing unit 7 can open the top of the collection cylinder 1 during sampling. When the sampling barrel 11 is full, the top sealing unit 7 can close the top of the collection cylinder 1, saving the use of the rainwater filtration unit 4.

[0068] The top sealing unit 7 includes an ear plate 71, a top sealing motor 72, a rotating shaft 73, a protruding plate 74, a top sealing disc 75, and a sealing ring 76. The ear plate 71 is fixedly connected to the outer top of the collecting cylinder 1. The rotating shaft 73 is rotatably connected to the ear plate 71. The bottom end of the rotating shaft 73 is fixedly connected to the output shaft of the top sealing motor 72. The top sealing motor 72 is fixed to the bottom of the ear plate 71. The top of the rotating shaft 73 is fixedly connected to the top sealing disc 75 through the protruding plate 74. A sealing ring 76 is provided on the top of the collecting cylinder 1. The input end of the top sealing motor 72 is electrically connected to the output end of the controller 16 and the contact switch 19. The top sealing motor 72 is a servo motor. The controller 16 is a PLC controller. The controller 16 and the contact switch 19 control the operation of the top sealing motor 72 using methods commonly used in the prior art.

[0069] The rotation of the top sealing motor 72 drives the rotating shaft 73 to rotate, which in turn drives the top sealing plate 74 to rotate the top sealing plate 75. This allows the top sealing plate 75 to seal or open the top of the collecting cylinder 1. The bottom of the top sealing plate 75, in conjunction with the sealing ring 76, can improve the sealing degree of the top of the collecting cylinder 1.

[0070] Example 4, please refer to Figure 1-8 This embodiment provides a technical solution: an automatic precipitation sample collection device for environmental monitoring. This embodiment is structurally similar to Embodiment 3, with the difference being:

[0071] It also includes a large object blocking unit 8. The outside of the collection tube 1 is equipped with a large object blocking unit 8 to block large objects carried by rainwater during wind and rain through a fence-like structure, so as to prevent large objects from falling into the collection tube 1 and affecting sampling.

[0072] The large item concealment unit 8 includes a side plate 81, a screw 82, a lifting motor 83, a sliding column 84, an inner ear plate 85, a limit nut 86, and a fence assembly. Side plates 81 are respectively provided on both sides of the bottom of the collection cylinder 1. One side plate 81 is rotatably connected to the bottom end of the screw 82. The bottom end of the screw 82 is fixedly connected to the output shaft of the lifting motor 83. The input end of the lifting motor 83 is electrically connected to the output end of the controller 16. The lifting motor 83 is a servo motor. The controller 16 controls the operation of the lifting motor 83 using methods commonly used in the prior art. The lifting motor 83 is fixed to the bottom of the collection cylinder 1. The other side plate 81 is fixedly connected to... At the bottom of the sliding column 84, two inner ear plates 85 corresponding to the side plate 81 are provided on the inner side of the bottom of the fence assembly. The screw 82 is threadedly connected to the screw hole on the corresponding inner ear plate 85, and the sliding column 84 is slidably connected to the sliding hole on the corresponding inner ear plate 85. The top of the sliding column 84 is threadedly connected to the limit nut 86. The lifting motor 83 drives the screw 82 to rotate. Through the thread action between the screw 82 and the side plate 81, the fence assembly can be driven to slide along the sliding column 84. Thus, the fence assembly can be lifted when needed, so that the fence assembly can block the top of the collection cylinder 1 and prevent large debris from falling into the collection cylinder 1 with the wind and affecting the sampling of precipitation.

[0073] The fence assembly includes a circular ring 87, an arc-shaped notch 88, fence posts 89, and a top ring 810. The top of the circular ring 87 is provided with a ring array of fence posts 89, and the top of the fence posts 89 is fixedly connected to the top ring 810. The fence posts 89 are used to block large debris flying in the wind. The side of the circular ring 87 has an arc-shaped notch 88. When the fence assembly is raised, the arc-shaped notch 88 is horizontally aligned with the top sealing plate 75, so that the top sealing plate 75 can pass through the arc-shaped notch 88 when it is opened, thus preventing the fence assembly from obstructing the opening of the top sealing plate 75 after it is raised.

[0074] Please see Figure 1-8 A method of using an automatic precipitation sample collection device for environmental monitoring: When it rains, the fence on top of the large debris blocking unit 8 is raised, the top sealing unit 7 opens the top of the collection tube 1, the sampling tube inlet sealing unit 9 is installed on the top of the sampling tube 11, and then the sampling tube 11 is placed on the lifting tray 51.

[0075] Then, the sliding lever 65 is moved so that the sliding disc 62 slides and compresses the control spring 66 in the mounting sleeve 61, lifting the lifting tray 51 upward. The top of the insertion tube 92 extends through the insertion slot into the manifold 32, and the ejector pin 35 pushes open the one-way valve assembly, so that the insertion tube 92 of the bucket cover 91 is connected to the manifold 32.

[0076] When the lifting tray 51 is lifted, the protrusion 56 is located above the wedge control block 64. Then the sliding lever 65 is released, the control spring 66 rebounds, and the wedge surface of the wedge control block 64 supports the protrusion 56.

[0077] After being filtered by the precipitation filtration unit 4, the rainwater falls into the collection hopper 31, and then enters the sampling bucket 11 through the collection pipe 32 and the insertion tube 92.

[0078] Once the sampling bucket 11 is filled with rainwater, the protrusion 56 presses against the wedge-shaped control block 64 and moves laterally, compressing the control spring 66. The sliding disc 62 slides into the mounting sleeve 61, and the lifting tray 51 descends along the guide post 53 via the guide ring 52. The sampling bucket inlet sealing unit 9 disengages from the rubber plug 33 at the bottom of the collecting pipe 32.

[0079] The bottom of the lifting tray 51 contacts the contact switch 19 on the mounting base 18. The contact switch 19 controls the solenoid valve 37 to open, and the rainwater in the collection pipe 32 is discharged through the drain pipe 36. Then the contact switch 19 controls the top sealing unit 7 to close the top of the collection cylinder 1.

[0080] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0081] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic collection of precipitation sample device for environmental monitoring, characterized in that, include: The collection cylinder (1) has an operation slot (2) on one side of its bottom, and a rainwater collection unit (3) is installed inside the collection cylinder (1). A sampling bucket lifting guide assembly (5) is installed at the bottom of the collection tube (1). A sampling bucket (11) is placed on the top of the sampling bucket lifting guide assembly (5). A sampling bucket inlet sealing unit (9) is installed on the top of the sampling bucket (11). The top of the sampling bucket inlet sealing unit (9) is connected to the bottom of the precipitation collection unit (3). The sampling barrel descent control unit (6) includes a mounting sleeve (61) and a wedge-shaped control block (64). The mounting sleeve (61) is fixedly connected to one side of the bottom of the collection barrel (1). A horizontal notch is provided on the side of the mounting sleeve (61). A sliding disc (62) is slidably connected inside the mounting sleeve (61). A cylinder (63) is fixedly connected to the middle of the sliding disc (62). A wedge-shaped control block (64) is fixedly connected to the outer end of the cylinder (63). A wedge-shaped surface is provided on the upper side of the wedge-shaped control block (64). The sliding disc (62) is connected to the inner end of the mounting sleeve (61) through a control spring (66). A sliding lever (65) is provided on the side of the sliding disc (62) and slidably connected to the notch.

2. The automatic precipitation sample collection device for environmental monitoring according to claim 1, characterized in that: The sampling bucket lifting guide assembly (5) includes a lifting tray (51). The outer side of the lifting tray (51) is provided with no less than two guide rings (52). A guide post (53) is vertically slidably connected inside the guide ring (52). The bottom of the guide post (53) is fixedly connected to the bottom of the collection tube (1). A limit ring (55) is also fixed at the bottom of the guide post (53). A limit semicircular sleeve (54) is provided on the upper side of the lifting tray (51). A protrusion (56) corresponding to and cooperating with the wedge-shaped control block (64) is provided on the outer periphery of the lifting tray (51).

3. The automatic precipitation sample collection device for environmental monitoring according to claim 1, characterized in that: The precipitation collection unit (3) includes a collection bucket (31), which is fixedly connected inside the collection cylinder (1). The bottom of the collection bucket (31) is connected to the top of the collection pipe (32). A rubber stopper (33) is provided at the bottom of the collection pipe (32), and an insertion slot is provided in the middle of the rubber stopper (33). A pin (35) is fixedly connected inside the collection pipe (32) through a fixing frame (34).

4. The automatic precipitation sample collection device for environmental monitoring according to claim 3, characterized in that: The rainwater collection unit (3) also includes a drain pipe (36) and a solenoid valve (37). The bottom side of the collection pipe (32) is connected to the drain pipe (36), and the other end of the drain pipe (36) extends to the outside of the collection cylinder (1). A solenoid valve (37) is connected in series on the drain pipe (36).

5. The automatic precipitation sample collection device for environmental monitoring according to claim 4, characterized in that: It also includes a mounting base (18) and a contact switch (19). The contact switch (19) is mounted on the bottom of the collecting tube (1) via the mounting base (18). The output end of the contact switch (19) is electrically connected to the input end of the solenoid valve (37).

6. The automatic precipitation sample collection device for environmental monitoring according to claim 3, characterized in that: The sampling bucket inlet sealing unit (9) includes a bucket lid (91) and a one-way top valve assembly. The bucket lid (91) is threaded to the top opening of the sampling bucket (11). A tube (92) is fixedly connected to the top center of the bucket lid (91). The tube (92) is inserted into the insertion slot in the middle of the rubber stopper (33). A one-way top valve assembly is installed inside the tube (92).

7. The automatic precipitation sample collection device for environmental monitoring according to claim 1, characterized in that: It also includes a rainwater filtration unit (4), which is installed at the top of the collection cylinder (1) and a filter cloth water extrusion assembly (10) is installed on the rainwater filtration unit (4).

8. The automatic precipitation sample collection device for environmental monitoring according to claim 1, characterized in that: It also includes a top sealing unit (7), which is installed on the top of the collection cylinder (1) to seal the top of the collection cylinder (1).

9. The automatic precipitation sample collection device for environmental monitoring according to claim 1, characterized in that: It also includes a large item blocking unit (8), which is installed on the outside of the collection tube (1) to block large items.

10. A method of using an automatic precipitation sample collection device for environmental monitoring according to any one of claims 1-9, characterized in that: Includes the following steps; Step 1: When it rains, the fence on the top of the large debris shielding unit (8) is raised, the top sealing unit (7) opens the top of the collection tube (1), the sampling tube inlet sealing unit (9) is installed on the top of the sampling tube (11), and then the sampling tube (11) is placed on the lifting tray (51). Step 2: Then, move the sliding lever (65) to make the sliding disc (62) slide and compress the control spring (66) in the mounting sleeve (61), lift the lifting tray (51) upward, and extend the top of the insertion tube (92) through the insertion slot into the manifold (32). The ejector pin (35) pushes open the one-way valve assembly, so that the insertion tube (92) of the bucket cover (91) and the manifold (32) are connected. Step 3: When the lifting tray (51) is lifted, the protrusion (56) is above the wedge control block (64). Then, release the sliding block (65) and control the spring (66) to rebound, so that the wedge surface of the wedge control block (64) supports the protrusion (56). Step 4: After being filtered by the precipitation filtration unit (4), the rainwater falls into the collection bucket (31) and then enters the sampling bucket (11) through the collection pipe (32) and the insertion tube (92); Step 5: Once the sampling bucket (11) is filled with precipitation, the protrusion (56) presses against the wedge-shaped control block (64) and moves laterally, compressing the control spring (66). The sliding disc (62) slides into the mounting sleeve (61), and the lifting tray (51) descends along the guide post (53) through the guide ring (52). The sampling bucket inlet sealing unit (9) disengages from the rubber plug (33) at the bottom of the collecting pipe (32). Step six, the bottom of the lifting tray (51) contacts the contact switch (19) on the mounting base (18), the contact switch (19) controls the solenoid valve (37) to open, the rainwater in the collection pipe (32) is discharged through the drain pipe (36), and then the contact switch (19) controls the top sealing unit (7) to close the top of the collection cylinder (1).

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