A pollution source monitoring and sampling device

Abstract

The present invention relates to the technical field of monitoring sampling devices, and discloses a pollution source monitoring sampling device, including a base. The base is a hollow structure. A plurality of rotating rods are rotatably installed at equal intervals in the circumferential direction at the top end of the base. A sampling tube is fixedly installed on the outer surface of each rotating rod. A movable plug is movably installed inside the sampling tube. The movable plug is a hollow structure. A detection probe is inserted through the top end of the movable plug. A movable disk is fixedly installed at the bottom end of the detection probe. In the present invention, the lifting lead screw is driven to rotate forward by a stepping motor, so that the lifting lead screw drives the entire moving frame to move downward. Since the inclined groove formed on the moving frame is slidably installed with the guide post installed on the rotating rod, when the moving frame moves downward, the sampling tube can be driven to rotate outward through the guide post and the rotating rod, so that the nozzle of the sampling tube can extract the air around the base, expanding the air sampling range of the sampling tube.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring sampling devices, and particularly relates to a pollution source monitoring sampling device. Background Art

[0002] Environmental pollution source monitoring is to detect the content and emission of various substances that have an impact on humans and the environment, track the changes in environmental quality, determine the environmental quality level, provide the basis and guarantee for environmental management, pollution control and other work, and understand the environmental level and conduct environmental monitoring, which is the premise for carrying out all environmental work. Environmental pollution source monitoring requires the use of environmental pollution source monitoring devices.

[0003] An existing environmental pollution source monitoring device with sampling performance (Publication No.: CN214584351U) has at least the following drawbacks: The above patent starts the suction fan to inhale air and discharges the air into the sample storage box for sampling and storage, so that the environmental pollution source monitoring device has the sampling function; Since the suction end of the suction fan in the above patent is fixedly arranged, only the air at the same position in the outside world can be sampled, the sampling range is limited, and the representativeness of the sample is poor. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks existing in the prior art, and to propose a pollution source monitoring sampling device.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A pollution source monitoring sampling device includes a base. The base is a hollow structure. A plurality of rotating rods are rotatably installed at equal intervals in the circumferential direction at the top end of the base. A sampling tube is fixedly installed on the outer surface of each rotating rod. A movable plug is movably installed inside the sampling tube. The movable plug is a hollow structure. A detection probe is inserted through the top end of the movable plug. A movable disk is fixedly installed at the bottom end of the detection probe. A suction mechanism is installed between the base and the movable plug. A swinging mechanism for driving the rotating rod to swing is installed at the top end of the base.

[0007] As a further scheme of the present invention, the suction mechanism includes a connecting rod rotatably installed at the bottom end of the movable plug. The bottom end of the connecting rod is rotatably installed with the top end of the base. A telescopic component is installed between the movable disk and the sampling tube.

[0008] As a further scheme of the present invention, the telescopic component includes two push rods fixedly installed at the bottom end of the movable disk. A compression spring is sleeved on the outer surface of the detection probe. The compression spring is arranged between the top wall of the movable plug and the movable disk. A stop block for blocking the end of the push rod is fixedly installed on the inner wall of the sampling tube near its bottom end.

[0009] As a further solution of the present invention, the swing mechanism includes a portal frame fixedly installed on the top of the base, a lifting screw rod is rotatably installed between the top of the portal frame and the top of the base, the outer surface of the lifting screw rod is threadedly connected to a moving frame, and the outer periphery of the mobile frame corresponding to the rotating rod is penetrated by an oblique groove, the sampling tube is arranged on the inner side of the mobile frame, and a guide column matching the oblique groove is fixedly installed on the outer surface of the rotating rod, and the guide column is slidably installed on the inner wall of the oblique groove, a protective mechanism is installed on the top of the portal frame, and a sealing assembly is installed on the inner side of the mobile frame near each sampling tube.

[0010] As a further solution of the present invention, the sealing assembly includes multiple thrust spring rods fixedly installed on the inner side of one end of the movable frame away from the rotating rod, and the telescopic ends of the multiple thrust spring rods are fixedly installed with sealing plates for intermittently sealing the pipe opening of the sampling tube.

[0011] As a further solution of the present invention, the protective mechanism includes a tension spring rod fixedly installed on the top of the portal frame, the telescopic end of the tension spring rod is fixedly installed with a top plate, the lower surface of the top plate is provided with a plurality of slide grooves corresponding to the sampling tube in the circumferential direction, the inner wall of the slide groove is slidably installed with a baffle for intermittently sealing the tube mouth of the sampling tube, a connecting rod is rotatably installed between one end of the baffle close to the tension spring rod and the top of the portal frame, and a force storage assembly is installed between the baffle and the sampling tube.

[0012] As a further solution of the present invention, the force storage assembly includes a U-shaped plate fixedly installed on the top end of the sampling tube away from the rotating rod, the side of the U-shaped plate close to the rotating rod is arranged with an inclined surface, the outer surface of the U-shaped plate away from the sampling tube is hinged with a flap through an elastic one-way hinge, the upper surface of the top plate close to each U-shaped plate is penetrated with a matching slot, the upper surface of the top plate close to the flap is also penetrated with a clearance groove, and the clearance groove is communicated with the slot.

[0013] As a further solution of the present invention, a stepper motor is fixedly mounted on the top wall of the base, and the output end of the stepper motor passes through the top end of the base and is fixedly mounted on the rotation center of the lifting screw.

[0014] As a further solution of the present invention, a sealing gasket is fixedly installed on the top end of the detection probe.

[0015] The beneficial effects of the present invention are:

[0016] 1. The stepping motor drives the lifting screw to rotate forward, so that the lifting screw drives the mobile frame to move downward as a whole. Since the inclined groove on the mobile frame and the guide column installed on the rotating rod are slidably installed, the mobile frame can drive the sampling tube to rotate outward through the guide column and the rotating rod when moving downward, so that the nozzle of the sampling tube can extract the air around the base, thereby expanding the sampling range of the sampling tube for air;

[0017] 2. When the sampling tube is turned outwards to the sealing plate, the nozzle of the sampling tube will push the sealing plate to move, compressing the thrust spring rod. After the sampling tube is turned outwards in place, the sealing plate will cover the nozzle of the sampling tube under the elastic force of the thrust spring rod, stopping the flow of the air extracted in the sampling tube so that the detection probe can better perform the air detection operation in the sampling tube;

[0018] 3. After the detection is completed, the stepping motor drives the lifting lead screw to reverse, causing the lifting lead screw to drive the moving frame threadedly connected to its outer surface to move upwards, flipping the sampling tube and the movable plug as a whole upwards to reset; when the movable plug moves upwards in the sampling tube, the bottom end of the push rod gradually separates from the stop block, causing the detection probe to retract back into the movable plug under the elastic force of the compression spring. When the detection probe retracts, the hole opened at the end of the movable plug for the detection probe to move will scrape off the dust adhering to the surface of the detection probe, so as to keep the surface of the detection probe clean and ensure the accuracy of the air detection by the detection probe. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of a pollution source monitoring sampling device proposed by the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of a pollution source monitoring sampling device proposed by the present invention after removing the top plate;

[0021] Figure 3 It is a schematic diagram of the sampling tube structure of a pollution source monitoring sampling device proposed by the present invention;

[0022] Figure 4 It is a schematic diagram of the internal structure of the sampling tube of a pollution source monitoring sampling device proposed by the present invention;

[0023] Figure 5 It is a schematic diagram of the bottom structure of the base of a pollution source monitoring sampling device proposed by the present invention;

[0024] Figure 6 It is a schematic diagram of the bottom structure of the top plate of a pollution source monitoring sampling device proposed by the present invention;

[0025] Figure 7 It is a schematic diagram of the top structure of the top plate of a pollution source monitoring sampling device proposed by the present invention;

[0026] Figure 8 It is a schematic diagram of the moving frame structure of a pollution source monitoring sampling device proposed by the present invention;

[0027] Figure 9 It is Figure 3 The enlarged view of the structure at A in

[0028] Figure 10 is Figure 4 Enlarged view of the structure at position B in

[0029] Figure 11 is Figure 7 Enlarged view of the structure at position C in

[0030] In the figure: 1. Base; 2. Rotating rod; 3. Sampling tube; 4. Gantry; 5. Movable plug; 6. Connecting rod; 7. Lifting screw rod; 8. Moving frame; 9. Inclined groove; 10. Guide post; 11. Detection probe; 12. Movable disk; 13. Compression spring; 14. Push rod; 15. Stopper; 16. Thrust spring rod; 17. Sealing plate; 18. Tension spring rod; 19. Top disk; 20. Sliding groove; 21. Baffle; 22. Link; 23. U-shaped plate; 24. Flap; 25. Slot; 26. Relief groove; 27. Stepper motor; 28. Sealing gasket. Specific implementation mode

[0031] 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.

[0032] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Next, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0033] Refer to the attached Figure 1 - attached Figure 11, A pollution source monitoring and sampling device, including a base 1. The base 1 is of a hollow structure, and this application can be installed at a position where air pollution sources need to be monitored through the base 1 for use; a plurality of rotating rods 2 are rotatably installed at equal intervals in the circumferential direction at the top end of the base 1. A sampling tube 3 is fixedly installed on the outer surface of each rotating rod 2. A movable plug 5 is movably installed inside the sampling tube 3. The movable plug 5 is of a hollow structure. A detection probe 11 is inserted through the top end of the movable plug 5. During the monitoring and sampling operation, the outside air is sampled through multiple sampling tubes 3, and the air samples are respectively detected by the detection probes 11 correspondingly installed in each sampling tube 3 to improve the accuracy of air quality detection; a movable disk 12 is fixedly installed at the bottom end of the detection probe 11. A suction mechanism is installed between the base 1 and the movable plug 5. A swing mechanism for driving the rotating rod 2 to swing is installed at the top end of the base 1. The swing mechanism includes a gantry frame 4 fixedly installed at the top end of the base 1. A lifting screw rod 7 is rotatably installed between the top end of the gantry frame 4 and the top end of the base 1. A moving frame 8 is threadedly connected to the outer surface of the lifting screw rod 7. Oblique slots 9 are respectively formed through the outer circumference of the moving frame 8 corresponding to the rotating rods 2. The sampling tube 3 is arranged inside the moving frame 8. A guide post 10 matching the oblique slot 9 is fixedly installed on the outer surface of the rotating rod 2. The guide post 10 is slidably installed on the inner wall of the oblique slot 9. A protection mechanism is installed at the top of the gantry frame 4. A sealing component is installed on the inner side of the moving frame 8 close to each sampling tube 3. A stepping motor 27 is fixedly installed on the top wall of the base 1. The output end of the stepping motor 27 penetrates through the top end of the base 1 and is fixedly installed at the rotation center of the lifting screw rod 7. A sealing gasket 28 is fixedly installed at the top end of the detection probe 11. The hole at the top end of the movable plug 5 can be blocked through the sealing gasket 28 to ensure the suction effect of the movable plug 5 on the outside air.

[0034] When it is necessary to detect the air quality, the stepping motor 27 is driven to rotate the lifting screw rod 7 forward, so that the lifting screw rod 7 drives the entire moving frame 8 to move downward. Since the oblique slot 9 formed on the moving frame 8 is slidably installed with the guide post 10 installed on the rotating rod 2, when the moving frame 8 moves downward, it can drive the sampling tube 3 to rotate outward through the guide post 10 and the rotating rod 2, so that the nozzle of the sampling tube 3 can extract the air around the base 1, expanding the air sampling range of the sampling tube 3.

[0035] In this embodiment, the suction mechanism includes a connecting rod 6 rotatably installed at the bottom end of the movable plug 5. The bottom end of the connecting rod 6 is rotatably installed with the top end of the base 1. A telescopic component is installed between the movable disk 12 and the sampling tube 3.

[0036] When the sampling tube 3 rotates, it will drive the movable plug 5 movably installed inside it to deflect synchronously. Since the movable plug 5 is rotatably installed between the connecting rod 6 and the base 1, when the sampling tube 3 rotates outward, the movable plug 5 can move downward under the pulling action of the connecting rod 6, so that the movable plug 5 can draw external air into the sampling tube 3, so as to detect the air quality drawn into the sampling tube 3 by the detection probe 11 subsequently.

[0037] In this embodiment, the telescopic assembly includes two push rods 14 fixedly installed at the bottom end of the movable disk 12. A compression spring 13 is sleeved on the outer surface of the detection probe 11. The compression spring 13 is arranged between the top wall of the movable plug 5 and the movable disk 12. A stopper 15 for blocking the end of the push rod 14 is fixedly installed on the inner wall of the sampling tube 3 near its bottom end.

[0038] When the whole movable plug 5 moves down to the bottom position of the sampling tube 3, the bottom end of the push rod 14 will abut against the stopper 15 installed on the bottom wall of the sampling tube 3. As the movable plug 5 continues to move down, the push rod 14 will push the detection probe 11 out of the movable plug 5 through the movable disk 12, so that the detection probe 11 extends out to detect the air quality inside the sampling tube 3.

[0039] In this embodiment, the sealing assembly includes a plurality of thrust spring rods 16 fixedly installed inside the inner side of the moving frame 8 far away from the rotating rod 2. A sealing plate 17 for intermittently blocking the pipe orifice of the sampling tube 3 is fixedly installed at the telescopic ends of the plurality of thrust spring rods 16.

[0040] When the sampling tube 3 turns outward to the sealing plate 17, the pipe orifice of the sampling tube 3 will push the sealing plate 17 to move, so that the thrust spring rods 16 are compressed. Until the sampling tube 3 turns outward in place, the sealing plate 17 will cover the pipe orifice of the sampling tube 3 under the elastic force of the thrust spring rods 16, so that the air drawn into the sampling tube 3 stops flowing, so as to facilitate the detection probe 11 to better detect the air in the sampling tube 3.

[0041] In this embodiment, the protection mechanism includes a tension spring rod 18 fixedly installed on the top of the door frame 4, and a top plate 19 is fixedly installed on the telescopic end of the tension spring rod 18. A plurality of slide grooves 20 corresponding to the sampling tube 3 are opened in the circumferential direction of the lower surface of the top plate 19. A baffle 21 for intermittently blocking the tube mouth of the sampling tube 3 is slidably installed on the inner wall of the slide groove 20. A sponge pad is bonded to the lower surface of the baffle 21. The sponge pad has a certain thickness, so that after the top plate 19 drives the baffle 21 to move upward, the bottom of the sponge pad can still contact the tube mouth of the sampling tube 3 in a vertical state, so that the baffle 21 can wipe the surface of the movable plug 5 through the sponge pad when moving; A connecting rod 22 is rotatably installed between one end of the baffle plate 21 close to the tension spring rod 18 and the top of the door frame 4, and a force storage assembly is installed between the baffle plate 21 and the sampling tube 3. The force storage assembly includes a U-shaped plate 23 fixedly installed on the top of the sampling tube 3 away from the rotating rod 2. The side of the U-shaped plate 23 close to the rotating rod 2 is arranged as an inclined surface, and the outer surface of the U-shaped plate 23 away from the sampling tube 3 is hinged with a flap 24 through an elastic one-way hinge. The upper surface of the top plate 19 close to each U-shaped plate 23 is penetrated with a matching slot 25, and the upper surface of the top plate 19 close to the flap 24 is also penetrated with a clearance groove 26, and the clearance groove 26 is connected with the slot 25.

[0042] When the U-shaped plate 23 installed at the top of the sampling tube 3 rotates to the top plate 19, as the sampling tube 3 continues to rotate, the U-shaped plate 23 can push the top plate 19 upward, so that the tension spring rod 18 is stretched, so that the sampling tube 3 can be smoothly reset; when the top plate 19 is pushed upward, the baffle 21 rotatably installed with the door frame 4 through the connecting rod 22 will be pulled in the direction of the tension spring rod 18, and when the end of the U-shaped plate 23 moves to the slot 25, the flap 24 hinged by the elastic one-way hinge has not yet entered the give way slot 26, so that the top of the flap 24 is pressed under the top plate 19, and the sampling tube 3 is reset smoothly. When the sample tube 3 is flipped to a vertical state and the top of the movable plug 5 is flush with the tube mouth of the sampling tube 3, the flap 24 also reaches directly below the yielding groove 26, so that the top of the flap 24 no longer abuts against the bottom of the top plate 19, so that the top plate 19 is quickly reset downward under the tension of the tension spring rod 18, and at the same time, the multiple baffles 21 installed at the bottom of the top plate 19 will also move outward under the action of the connecting rod 22, so that the sponge pad installed at the bottom of the baffle 21 can wipe the dust on the surface of the movable plug 5, thereby ensuring the cleanliness of the movable plug 5 and avoiding cross-contamination of dust during the next air sampling, which affects the detection accuracy.

[0043] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: When it is necessary to detect the air quality, the lifting lead screw 7 is driven to rotate forward by the stepping motor 27, so that the lifting lead screw 7 drives the entire moving frame 8 to move downward. Since the inclined groove 9 formed on the moving frame 8 is slidably installed with the guide post 10 installed on the rotating rod 2, the moving frame 8 can drive the sampling tube 3 to rotate outward through the guide post 10 and the rotating rod 2 when moving downward, so that the nozzle of the sampling tube 3 can extract the air around the base 1, expanding the air sampling range of the sampling tube 3;

[0044] When the sampling tube 3 rotates, it will drive the movable plug 5 movably installed inside it to deflect synchronously. Since the movable plug 5 is rotatably installed between the connecting rod 6 and the base 1, the movable plug 5 can move downward under the pulling action of the connecting rod 6 when the sampling tube 3 rotates outward, so that the movable plug 5 can draw the outside air into the sampling tube 3, so as to detect the air quality extracted in the sampling tube 3 by the detection probe 11 subsequently;

[0045] When the whole movable plug 5 moves down to the bottom position of the sampling tube 3, the bottom end of the push rod 14 will abut against the stopper 15 installed on the bottom wall of the sampling tube 3. As the movable plug 5 continues to move down, the push rod 14 will push the detection probe 11 out of the movable plug 5 through the movable disk 12, so that the detection probe 11 extends out to detect the air quality inside the sampling tube 3;

[0046] When the sampling tube 3 turns outward to the sealing plate 17, the nozzle of the sampling tube 3 will push the sealing plate 17 to move, so that the thrust spring rod 16 is compressed. Until the sampling tube 3 turns outward in place, the sealing plate 17 will cover the nozzle of the sampling tube 3 under the elastic force of the thrust spring rod 16, so that the air extracted in the sampling tube 3 stops flowing, so as to facilitate the detection probe 11 to better detect the air in the sampling tube 3;

[0047] After the detection is completed, the stepping motor 27 drives the lifting lead screw 7 to rotate reversely, so that the lifting lead screw 7 drives the moving frame 8 threadedly connected to its outer surface to move upward, so that the sampling tube 3 and the movable plug 5 are turned upward and reset as a whole; when the movable plug 5 moves upward in the sampling tube 3, the bottom end of the push rod 14 gradually separates from the stopper 15, so that the detection probe 11 retracts back into the movable plug 5 under the elastic force of the compression spring 13. When the detection probe 11 retracts, the hole formed at the end of the movable plug 5 for the detection probe 11 to move will scrape the dust adhering to the surface of the detection probe 11, so as to keep the surface of the detection probe 11 clean and ensure the accuracy of the air detection by the detection probe 11;

[0048] At the same time, while the movable plug 5 moves upward in the sampling tube 3, it will push the air inside the sampling tube 3 and the dust adhering to the inner wall outwards, avoiding the subsequent mixing of the air extracted again with the dust and other impurities remaining in the previously extracted air, which affects the detection accuracy;

[0049] When the U-shaped plate 23 installed at the top of the sampling tube 3 rotates to the top plate 19, as the sampling tube 3 continues to rotate, the U-shaped plate 23 can push the top plate 19 upward, so that the tension spring rod 18 is stretched, so that the sampling tube 3 can be smoothly reset;

[0050] When the top plate 19 is lifted up, the baffle plate 21 rotatably mounted with the door frame 4 through the connecting rod 22 will be pulled in the direction of the tension spring rod 18. When the end of the U-shaped plate 23 moves to the slot 25, the flap 24 hinged by the elastic one-way hinge has not yet entered the clearance groove 26, so that the top of the flap 24 is pressed against the bottom of the top plate 19. When the sampling tube 3 is flipped to a vertical state and the top of the movable plug 5 is flush with the tube mouth of the sampling tube 3, the flap 24 also reaches the bottom of the clearance groove 26, so that the top of the flap 24 is no longer against the bottom of the top plate 19, so that the top plate 19 is quickly reset downward under the tension of the tension spring rod 18. At the same time, the multiple baffle plates 21 installed at the bottom of the top plate 19 will also move outward under the action of the connecting rod 22, so that the sponge pad installed at the bottom of the baffle plate 21 can wipe the dust on the surface of the movable plug 5, so as to ensure the cleanliness of the movable plug 5 and avoid cross contamination of dust during the next air sampling, which affects the detection accuracy.

[0051] When the sampling tube 3 drives the U-shaped plate 23 to flip downward, since the side edge of the U-shaped plate 23 is set as an inclined surface, the inclined edge of the U-shaped plate 23 can lift the top plate 19 after abutting against the inner wall of the slot 25. At the same time, the flap 24 hinged by the elastic one-way hinge will flip to the clearance groove 26 and be pulled into the slot 25 as the U-shaped plate 23 moves, ensuring the normal rotation effect of the sampling tube 3.

[0052] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pollution source monitoring and sampling device, comprising a base (1), wherein the base (1) is of a hollow structure, characterized in that, A plurality of rotating rods (2) are rotatably installed at equal intervals in the circumferential direction at the top end of the base (1). A sampling tube (3) is fixedly installed on the outer surface of each rotating rod (2). A movable plug (5) is movably installed inside the sampling tube (3). The movable plug (5) is of a hollow structure. A detection probe (11) is inserted through the top end of the movable plug (5). A movable disk (12) is fixedly installed at the bottom end of the detection probe (11). A suction mechanism is installed between the base (1) and the movable plug (5). A swing mechanism for driving the rotating rod (2) to swing is installed at the top end of the base (1). The suction mechanism includes a connecting rod (6) rotatably installed at the bottom end of the movable plug (5). The bottom end of the connecting rod (6) is rotatably installed with the top end of the base (1). A telescopic assembly is installed between the movable disk (12) and the sampling tube (3). The telescopic assembly includes two push rods (14) fixedly installed at the bottom end of the movable disk (12). A compression spring (13) is sleeved on the outer surface of the detection probe (11). The compression spring (13) is arranged between the top wall of the movable plug (5) and the movable disk (12). A stop block (15) for blocking the end of the push rod (14) is fixedly installed on the inner wall of the sampling tube (3) near its bottom end. The swing mechanism includes a gantry (4) fixedly installed at the top end of the base (1). A lifting screw rod (7) is rotatably installed between the top end of the gantry (4) and the top end of the base (1). A moving frame (8) is threadedly connected to the outer surface of the lifting screw rod (7). Oblique grooves (9) are respectively formed through the outer circumference of the moving frame (8) corresponding to the rotating rods (2). The sampling tube (3) is arranged inside the moving frame (8). A guide post (10) matching the oblique groove (9) is fixedly installed on the outer surface of the rotating rod (2). The guide post (10) is slidably installed with the inner wall of the oblique groove (9). A protection mechanism is installed at the top of the gantry (4). A sealing assembly is installed on the inner side of the moving frame (8) near each sampling tube (3). The sealing assembly includes a plurality of thrust spring rods (16) fixedly installed on the inner side of the end of the moving frame (8) away from the rotating rod (2). A sealing plate (17) for intermittently blocking the pipe orifice of the sampling tube (3) is fixedly installed at the telescopic end of the plurality of thrust spring rods (16). The protection mechanism includes a tension spring rod (18) fixedly installed at the top end of the gantry (4). A top disk (19) is fixedly installed at the telescopic end of the tension spring rod (18). A plurality of chutes (20) corresponding to the sampling tubes (3) are formed in the circumferential direction on the lower surface of the top disk (19). A baffle (21) for intermittently blocking the pipe orifice of the sampling tube (3) is slidably installed on the inner wall of the chute (20). A connecting rod (22) is rotatably installed between one end of the baffle (21) close to the tension spring rod (18) and the top end of the gantry (4). A power storage assembly is installed between the baffle (21) and the sampling tube (3). The power storage assembly includes a U-shaped plate (23) fixedly installed at the top end of the sampling tube (3) on the side away from the rotating rod (2).The side of the U-shaped plate (23) close to the rotating rod (2) is provided with an inclined surface, and the outer surface of the U-shaped plate (23) away from the sampling tube (3) is hinged with a flap (24) via an elastic one-way hinge, and the upper surface of the top plate (19) close to each U-shaped plate (23) is provided with a matching slot (25), and the upper surface of the top plate (19) close to the flap (24) is also provided with a clearance groove (26), and the clearance groove (26) is communicated with the slot (25).

2. The pollution source monitoring and sampling device according to claim 1, characterized in that, A stepping motor (27) is fixedly installed on the top wall of the base (1), and the output end of the stepping motor (27) penetrates through the top end of the base (1) and is fixedly installed with the rotation center of the lifting lead screw (7).

3. The pollution source monitoring and sampling device according to claim 1, characterized in that, A sealing gasket (28) is fixedly installed at the top end of the detection probe (11).

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