Pollution source monitoring and sampling device

Abstract

The invention relates to the technical field of monitoring and sampling devices, and discloses a pollution source monitoring and sampling device which comprises a base, the base is of a hollow structure, a plurality of rotating rods are rotatably installed at the top end of the base in the circumferential direction at equal intervals, a sampling pipe is fixedly installed on the outer surface of each rotating rod, and a movable plug is movably installed in each sampling pipe; the movable plug is of a hollow structure, a detection probe is inserted into the top end of the movable plug in a penetrating mode, and a movable disc is fixedly installed at the bottom end of the detection probe. The stepping motor drives the lifting screw rod to rotate forwards, so that the lifting screw rod drives the whole moving frame to move downwards, and as the chute formed in the moving frame and the guide column mounted on the rotating rod are mounted in a sliding manner, the moving frame can drive the sampling pipe to rotate outwards through the guide column and the rotating rod when moving downwards; therefore, the pipe orifice of the sampling pipe can extract the air around the base, and the air sampling range of the sampling pipe is expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring sampling devices, and in particular 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, 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 scheme: 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.

[0006] 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 at the top end of the base. A telescopic assembly is installed between the movable disk and the sampling tube.

[0007] As a further scheme of the present invention, the telescopic assembly 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 stopper for blocking the end of the push rod is fixedly installed on the inner wall of the sampling tube near its bottom end.

[0008] As a further solution of the present invention, the swing mechanism includes a gantry fixedly installed at the top end of the base. A lifting screw rod is rotatably installed between the top end of the gantry and the top end of the base. A moving frame is threadedly connected to the outer surface of the lifting screw rod. Oblique slots are respectively formed through the outer circumference of the moving frame corresponding to the rotating rods. The sampling tube is arranged inside the moving frame. Guide columns matching the oblique slots are fixedly installed on the outer surface of the rotating rod. The guide columns are slidably installed on the inner walls of the oblique slots. A protection mechanism is installed at the top of the gantry. Sealing components are installed on the inner side of the moving frame close to each sampling tube.

[0009] As a further solution of the present invention, the sealing component includes a plurality of thrust spring rods fixedly installed on the inner side of the moving frame away from the rotating rod end. The telescopic ends of the plurality of thrust spring rods are fixedly installed with a sealing plate that intermittently seals the pipe orifice of the sampling tube.

[0010] As a further solution of the present invention, the protection mechanism includes a tension spring rod fixedly installed at the top end of the gantry. The telescopic end of the tension spring rod is fixedly installed with a top plate. A plurality of chutes corresponding to the sampling tubes are circumferentially formed on the lower surface of the top plate. A baffle that intermittently seals the pipe orifice of the sampling tube is slidably installed on the inner wall of the chute. A connecting rod is rotatably installed between one end of the baffle close to the tension spring rod and the top end of the gantry. A power storage component is installed between the baffle and the sampling tube.

[0011] As a further solution of the present invention, the power storage component includes a U-shaped plate fixedly installed at the top end of the sampling tube away from the rotating rod side. The side of the U-shaped plate close to the rotating rod is arranged as an inclined surface. A flap is hinged to the outer surface of the U-shaped plate away from the sampling tube side through an elastic one-way hinge. Matching slots are respectively formed through the upper surface of the top plate close to each U-shaped plate. A relief groove is also formed through the upper surface of the top plate close to the flap. The relief groove communicates with the slot.

[0012] As a further solution of the present invention, a stepping motor is fixedly installed on the top wall of the base. The output end of the stepping motor penetrates the top end of the base and is fixedly installed with the rotation center of the lifting screw rod.

[0013] As a further solution of the present invention, a sealing gasket is fixedly installed at the top end of the detection probe.

[0014] The beneficial effects of the present invention are as follows: 1. By driving the lifting screw rod to rotate forward through the stepping motor, the lifting screw rod drives the entire moving frame to move downward. Since the oblique slots formed on the moving frame are slidably installed with the guide columns installed on the rotating rod, when the moving frame moves downward, the sampling tube can be driven to rotate outward through the guide columns and the rotating rod, so that the pipe orifice of the sampling tube can extract the air around the base, expanding the sampling range of the sampling tube for air; 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 detect the air in the sampling tube; 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, turning the sampling tube and the movable plug upwards as a whole to reset; when the movable plug moves upwards in the sampling tube, the bottom end of the push rod gradually separates from the stopper, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of a pollution source monitoring sampling device proposed by the present invention; Figure 2 is the structural schematic diagram of a pollution source monitoring sampling device proposed by the present invention after removing the top plate; Figure 3 is the structural schematic diagram of the sampling tube of a pollution source monitoring sampling device proposed by the present invention; Figure 4 is the internal structural schematic diagram of the sampling tube of a pollution source monitoring sampling device proposed by the present invention; Figure 5 is the structural schematic diagram of the bottom of the base of a pollution source monitoring sampling device proposed by the present invention; Figure 6 is the structural schematic diagram of the bottom of the top plate of a pollution source monitoring sampling device proposed by the present invention; Figure 7 is the structural schematic diagram of the top of the top plate of a pollution source monitoring sampling device proposed by the present invention; Figure 8 is the structural schematic diagram of the moving frame of a pollution source monitoring sampling device proposed by the present invention; Figure 9 is Figure 3 the enlarged view of the structure at A in Figure 10 is Figure 4 the enlarged view of the structure at B in Figure 11 is Figure 7 the enlarged view of the structure at C in

[0016] In the figure: 1, base; 2, rotating rod; 3, sampling tube; 4, portal frame; 5, movable plug; 6, connecting rod; 7, lifting lead screw; 8, moving frame; 9, inclined groove; 10, guide post; 11, detection probe; 12, movable disk; 13, compression spring; 14, push rod; 15, stop block; 16, thrust spring rod; 17, sealing plate; 18, tension spring rod; 19, top disk; 20, sliding groove; 21, baffle; 22, connecting rod; 23, U-shaped plate; 24, flap; 25, slot; 26, relief groove; 27, stepper motor; 28, gasket. Detailed implementation manner

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail the present invention with reference to the drawings and in combination with the embodiments.

[0019] Refer to the attached Figure 1 - attached Figure 11, A pollution source monitoring sampling device, including a base 1. The base 1 is a hollow structure, and this application can be installed at the position where air pollution sources need to be monitored through the base 1 for use; a plurality of rotating rods 2 are rotatably installed equidistantly 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 a hollow structure, and 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 opened 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. Through the sealing gasket 28, the hole at the top end of the movable plug 5 can be blocked to ensure the suction effect of the movable plug 5 on the outside air.

[0020] 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 opened 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 sampling range of the sampling tube 3 for air.

[0021] 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.

[0022] 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 pump 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.

[0023] 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.

[0024] 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.

[0025] 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 away from the rotating rod 2. A sealing plate 17 for intermittently blocking the orifice of the sampling tube 3 is fixedly installed at the telescopic ends of the plurality of thrust spring rods 16.

[0026] When the sampling tube 3 is turned outward to the sealing plate 17, the 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 is turned outward in place, the sealing plate 17 will cover the orifice of the sampling tube 3 under the elastic force of the thrust spring rods 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.

[0027] 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.

[0028] 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.

[0029] 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 screw rod 7 is driven to rotate forward by the stepping motor 27, so that the lifting screw rod 7 drives the moving frame 8 to move downward as a whole. Since the inclined groove 9 opened 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 sampling range of the sampling tube 3 for air; 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; 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 disc 12, so that the detection probe 11 extends out to detect the air quality inside the sampling tube 3; 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; After the detection is completed, the stepping motor 27 drives the lifting screw rod 7 to rotate reversely, so that the lifting screw rod 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 opened at the end of the movable plug 5 for the detection probe 11 to move will scrape the dust adhered to the surface of the detection probe 11, so as to keep the surface of the detection probe 11 clean and ensure the detection accuracy of the detection probe 11 for air; 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 adhered to the inner wall outwards, preventing the air extracted subsequently from being mixed with the dust and other impurities remaining in the previously extracted air, which may affect the detection accuracy; When the U-shaped plate 23 installed at the top end 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, stretching the tension spring rod 18, so that the sampling tube 3 can be reset smoothly; When the top plate 19 is pushed upward, the baffle 21 rotatably installed on the gantry 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 entered the relief groove 26 yet, so that the top of the flap 24 abuts against the bottom of the top plate 19. When the sampling tube 3 is turned to the vertical state and the top of the movable plug 5 is flush with the nozzle of the sampling tube 3, the flap 24 also reaches directly below the relief groove 26, so that the top of the flap 24 no longer abuts against the bottom of the top plate 19, and the top plate 19 quickly resets downward under the pulling force of the tension spring rod 18. At the same time, 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 pads installed at the bottom of the baffles 21 can wipe the dust on the surface of the movable plug 5, ensuring the cleanliness of the movable plug 5 and avoiding cross-contamination of dust during the next air sampling, which may affect the detection accuracy; When the sampling tube 3 drives the U-shaped plate 23 to turn downward, since the side of the U-shaped plate 23 is provided with an inclined surface, the hypotenuse of the U-shaped plate 23 can push the top plate 19 upward 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 turn into the relief groove 26 and be pulled into the slot 25 along with the movement of the U-shaped plate 23, ensuring the normal rotation effect of the sampling tube 3.

[0030] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pollution source monitoring sampling device, comprising a base (1), wherein the base (1) is a hollow structure, characterized in that: A plurality of rotating rods (2) are equidistantly mounted on the top of the base (1) in a circumferential direction, and a sampling tube (3) is fixedly mounted on the outer surface of each rotating rod (2). A movable plug (5) is movably mounted inside the sampling tube (3). The movable plug (5) is a hollow structure, and a detection probe (11) is inserted through the top of the movable plug (5). A movable disk (12) is fixedly mounted on the bottom of the detection probe (11). A suction mechanism is mounted between the base (1) and the movable plug (5), and a swing mechanism for driving the rotating rod (2) to swing is mounted on the top of the base (1).

2. A pollution source monitoring sampling device according to claim 1, characterized in that: The suction mechanism comprises a connecting rod (6) rotatably mounted on the bottom end of the movable plug (5), the bottom end of the connecting rod (6) being rotatably mounted on the top end of the base (1), and a telescopic component being installed between the movable disk (12) and the sampling tube (3).

3. A pollution source monitoring sampling device according to claim 2, characterized in that: The telescopic assembly comprises two push rods (14) fixedly mounted on 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); and a stopper (15) is fixedly mounted on the inner wall of the sampling tube (3) near its bottom end to block the end of the push rod (14).

4. A pollution source monitoring sampling device according to claim 1, characterized in that: The swing mechanism comprises a door frame (4) fixedly mounted on the top of the base (1); a lifting screw rod (7) is rotatably mounted between the top of the door frame (4) and the top of the base (1); a movable frame (8) is threadedly connected to the outer surface of the lifting screw rod (7); an oblique groove (9) is penetrated through the outer circumference of the corresponding rotating rod (2) of the movable frame (8); the sampling tube (3) is arranged on the inner side of the movable frame (8); a guide column (10) matching the oblique groove (9) is fixedly mounted on the outer surface of the rotating rod (2); the guide column (10) is slidably mounted on the inner wall of the oblique groove (9); a protective mechanism is mounted on the top of the door frame (4); and a sealing assembly is mounted on the inner side of the movable frame (8) close to each sampling tube (3).

5. A pollution source monitoring sampling device according to claim 4, characterized in that: The sealing assembly comprises a plurality of thrust spring rods (16) fixedly mounted on the inner side of one end of the mobile frame (8) away from the rotating rod (2), and sealing plates (17) for intermittently sealing the pipe opening of the sampling tube (3) are fixedly mounted on the telescopic ends of the plurality of thrust spring rods (16).

6. A pollution source monitoring sampling device according to claim 5, characterized in that: The protection mechanism comprises a tension spring rod (18) fixedly mounted on the top end of the portal frame (4); a top plate (19) is fixedly mounted on the telescopic end of the tension spring rod (18); a plurality of slide grooves (20) corresponding to the sampling tube (3) are provided in the circumferential direction of the lower surface of the top plate (19); a baffle (21) for intermittently blocking the tube opening of the sampling tube (3) is slidably mounted on the inner wall of the slide groove (20); a connecting rod (22) is rotatably mounted between one end of the baffle (21) close to the tension spring rod (18) and the top end of the portal frame (4); and a force storage component is mounted between the baffle (21) and the sampling tube (3).

7. A pollution source monitoring sampling device according to claim 6, characterized in that: The power storage assembly comprises a U-shaped plate (23) fixedly mounted on the top end 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; 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; the upper surface of the top plate (19) close to each U-shaped plate (23) is provided with a matching slot (25); the upper surface of the top plate (19) close to the flap (24) is also provided with a clearance groove (26); the clearance groove (26) is communicated with the slot (25).

8. A pollution source monitoring sampling device according to claim 1, characterized in that: A stepper motor (27) is fixedly mounted on the top wall of the base (1), and an output end of the stepper motor (27) passes through the top end of the base (1) and is fixedly mounted on the rotation center of the lifting screw rod (7).

9. A pollution source monitoring sampling device according to claim 1, characterized in that: A sealing gasket (28) is fixedly mounted on the top end of the detection probe (11).

Images