Multi-point sampling device for environment detection

Abstract

The invention discloses an environment detection multi-point sampling device, and relates to the technical field of environment detection, the environment detection multi-point sampling device comprises a box body and a sampling assembly, the box body is internally provided with a driving assembly, the top of the driving assembly is connected with a screw rod, the top of the screw rod is rotatably connected with a vertical frame, and the interior of one end of the vertical frame is rotatably connected with an adjusting rod; the sampling assembly is arranged on the outer side of the screw rod, the sampling assembly comprises a lifting frame, the outer side of the screw rod is in threaded connection with the lifting frame, and the lifting frame is in sliding connection with the vertical frame. In the sampling process, a screw rod drives a lifting frame to slide along a vertical frame to realize height adjustment of a sampling position, an adjusting rod drives a driving gear to be linked with a gear ring, so that a bottom plate periodically rotates, a pull rod is pulled and a piston plate is linked to move through a contact mechanism of a guide strip and a limiting column, and external air enters a sampling bottle through a one-way valve; therefore, a plurality of sampling bottles can perform suction sampling work in sequence, and layered multi-point sampling of air is completed in the lifting process.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental detection, and specifically to an environmental detection multi-point sampling device. Background Technique

[0002] Environmental detection refers to the process of regularly or continuously measuring and analyzing various physical, chemical, biological and other elements in the environment through scientific methods to evaluate the environmental quality, pollution status and change trends. Before detection, a sampling device is needed to collect representative samples from the environment.

[0003] For example, the patent with the publication number CN216207902U discloses an environmental detection multi-point sampling device, which can drive a round block to move through the meshing of a gear and a rack bar to suck external gas into the cylinder through a one-way intake valve, thus playing a role in facilitating multi-point sampling. However, in the actual detection process of such devices, the distance between multiple sampling points is relatively close, and the overall height is relatively low, resulting in a small difference in samples and also making it inconvenient to sample the air at high places. Summary of the Invention

[0004] The purpose of the present invention is to provide an environmental detection multi-point sampling device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: An environmental detection multi-point sampling device, including a box body and a sampling assembly. A driving assembly is arranged inside the box body, and a screw rod is connected to the top of the driving assembly. The top of the screw rod is rotatably connected to a vertical frame, and one end of the vertical frame is rotatably connected to an adjusting rod. The sampling assembly is arranged outside the screw rod. The sampling assembly includes a lifting frame. The lifting frame is threadedly connected to the outside of the screw rod, and the lifting frame is slidably connected to the vertical frame. A load-bearing seat is arranged at the outer end of the lifting frame, and an elastic band is fixed to the upper part of the load-bearing seat. A sampling bottle is arranged at the bottom of the elastic band, and an intake check valve is fixed to the middle of one side of the sampling bottle. A piston plate is slidably connected inside the sampling bottle, and an iron block is fixed to the middle of one side of the piston plate. A magnet is arranged on one side of the iron block, and a pull rod is fixed to one side of the magnet. One end of the pull rod is slidably connected with a limit post. A driving gear is rotatably connected to the bottom of the lifting frame, and a gear ring is meshed with one side of the driving gear. The gear ring is rotatably connected to the lifting frame. A bottom plate is fixed to one side of the gear ring, and a guide bar is arranged on the top of the bottom plate.

[0006] Further, the pull rod is slidably connected to the load-bearing seat, and the groove of the load-bearing seat is U-shaped.

[0007] Further, the inner side of the driving gear is matched with the outer side of the adjusting rod, and the driving gear is slidably connected to the adjusting rod.

[0008] Furthermore, the driving assembly includes a reduction motor, the reduction motor is installed at the lower end of one side of the box body, and the output shaft of the reduction motor is connected to a double gear shaft, and the double gear shaft is rotationally connected to the box body. The top of the double gear shaft meshes with a driven gear, and the top of the driven gear is provided with a first spline shaft, and the first spline shaft is rotationally connected to the box body.

[0009] Furthermore, the top of the first spline shaft is rotationally connected to a second spline shaft, one of the second spline shafts is fixedly connected to an adjusting rod, and the top of the other second spline shaft is connected to a gear box, and the output shaft of the gear box is fixedly connected to a screw rod.

[0010] Furthermore, a spline sleeve is sleeved on the outer side of the lower end of the second spline shaft, a limiting sleeve is rotationally connected to the outer side of the spline sleeve, and a slide rod is fixedly connected to one side of the limiting sleeve. The outer side of the slide rod is slidably connected to a rotating plate, and the middle of the rotating plate is rotationally connected to a central shaft, and the central shaft is fixedly connected to the box body.

[0011] Furthermore, a one-way bearing is installed at one end of the double gear shaft, a crankshaft is fixed to the outer side of the one-way bearing, and the crankshaft is rotationally connected to the box body. A connecting rod is rotationally connected to the middle of the crankshaft, and a sliding seat is rotationally connected to the top of the connecting rod, and the sliding seats are slidably connected to both the box body and the rotating plate.

[0012] Furthermore, a shielding assembly is connected to one side of the load-carrying seat. The shielding assembly includes fixed ears. Fixed ears are symmetrically fixed to one side of the load-carrying seat, and a rotating shaft is installed inside the fixed ears. Torsion springs are sleeved at both ends of the rotating shaft, one end of the torsion spring is fixedly connected to the fixed ear, and the other end of the torsion spring is fixedly connected to a baffle, and a fixed column is installed at the bottom of the baffle.

[0013] Furthermore, an extension plate is fixed to the outer side of the bottom plate, and convex strips are arranged on the top of the extension plate.

[0014] Furthermore, an exhaust check valve is installed inside the upper end of one side of the sampling bottle, a sealing plate is slidably connected to the upper end of one side of the sampling bottle, and an anti-slip strip is arranged on one side of the sealing plate.

[0015] The environmental detection multi-point sampling device provided by the present invention has the following beneficial effects: 1. During the sampling process of the present invention, the screw drives the lifting frame to slide along the vertical frame to adjust the height of the sampling position. The adjusting rod drives the driving gear to be linked with the toothed ring, causing the bottom plate to rotate periodically. Through the contact mechanism between the guiding strip and the limiting column, the pull rod is pulled and the piston plate is linked to move. External air enters the sampling bottle through the one-way valve, enabling the sequential suction sampling of multiple sampling bottles. Thus, during the lifting process, air stratification multi-point sampling is completed, expanding the sampling range. Moreover, when the limiting column moves to the inner side of the arc of the guiding strip, the magnet separates from the iron block, and the sampling bottle can be quickly disassembled through the elastic band, facilitating its transfer to the laboratory for testing and analysis.

[0016] 2. The reduction motor of the present invention drives the double gear shaft to rotate. The first spline shaft and the second spline shaft are connected through the spline sleeve. The transmission ratio is amplified by the gearbox to accurately control the number of turns of the screw rotation to adjust the sampling height. The other spline shaft remains stationary due to no connection, avoiding the misrotation of the adjusting rod. At the same time, the one-way bearing drives the crankshaft to rotate in the locked state, and the connecting rod pulls the sliding seat to move downward, enabling the rotating plate to adjust the heights of the two spline sleeves. Thus, during the process when the sampling assembly stops lifting, the sampling operation is automatically performed. Therefore, during the periodic movement process, equidistant sampling is achieved without an additional drive source, saving costs. After the sampling is completed, the motor rotates in reverse. As the one-way bearing is unlocked, the rotating plate cannot rotate, and the screw can continue to rotate in the reverse direction, reducing the overall sampling time by quickly lowering the lifting frame and improving the sampling efficiency.

[0017] 3. When adjusting the height of the sampling assembly of the present invention, the torsion spring drives the baffle to closely adhere to the sampling bottle, blocking the intake valve to avoid cross-contamination. Before the sampling operation, the extension plate will push the convex strip to contact the fixed column, automatically opening the baffle to expose the intake valve. The tail of the convex strip maintains the open state, which is conducive to maintaining the normal progress of the sampling operation. After sampling, the limiting column disengages from the guiding strip, and the torsion spring resets, and the baffle will automatically complete the blocking. Additionally, the sealing plate is used to cover the outside of the exhaust valve to prevent cross-contamination when the internal gas is discharged subsequently, ensuring the high efficiency of the sampling process and accurate results. Description of the Drawings

[0018] Figure 1 is the overall three-dimensional structure schematic diagram of an environmental detection multi-point sampling device of the present invention; Figure 2 is the internal structure schematic diagram of the box body of an environmental detection multi-point sampling device of the present invention; Figure 3 is the partial three-dimensional structure schematic diagram of the driving assembly of an environmental detection multi-point sampling device of the present invention; Figure 4 is the top three-dimensional structure schematic diagram of the sampling assembly of an environmental detection multi-point sampling device of the present invention; Figure 5Schematic diagram of the internal structure of the sampling bottle of an environmental detection multi-point sampling device according to the present invention; Figure 6 Schematic three-dimensional sectional structure diagram of the pull rod of an environmental detection multi-point sampling device according to the present invention; Figure 7 Schematic three-dimensional structure diagram of the guide bar of an environmental detection multi-point sampling device according to the present invention; Figure 8 Schematic three-dimensional structure diagram of the shielding component of an environmental detection multi-point sampling device according to the present invention.

[0019] In the figure: 1. Box body; 2. Driving component; 201. Reduction motor; 202. Double gear shaft; 203. Driven gear; 204. First spline shaft; 205. Second spline shaft; 206. Gear box; 207. Spline sleeve; 208. Limit sleeve; 209. Slide bar; 210. Rotating plate; 211. Central shaft; 212. One-way bearing; 213. Crankshaft; 214. Connecting rod; 215. Slide seat; 3. Screw rod; 4. Vertical frame; 5. Adjusting rod; 6. Sampling component; 601. Lifting frame; 602. Carrying seat; 603. Elastic band; 604. Sampling bottle; 605. Intake one-way valve; 606. Piston plate; 607. Iron block; 608. Magnet; 609. Pull rod; 610. Limit column; 611. Driving gear; 612. Tooth ring; 613. Bottom plate; 614. Guide bar; 7. Shielding component; 701. Fixed ear; 702. Rotating shaft; 703. Torsion spring; 704. Baffle plate; 705. Fixed column; 706. Extension plate; 707. Convex strip; 8. Exhaust one-way valve; 9. Sealing plate; 10. Anti-slip strip. Detailed implementation manners

[0020] Next, embodiments of the technical solutions of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0022] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality" means more than two unless otherwise specifically defined.

[0023] As used herein, the term "embodiment" means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0024] Please refer to Figures 1 to 8 , the environmental detection multi-point sampling device provided by the present invention includes a box body 1 and a sampling assembly 6. A driving assembly 2 is arranged inside the box body 1, and a screw rod 3 is connected to the top of the driving assembly 2. The top of the screw rod 3 is rotatably connected to a vertical frame 4, and one end of the vertical frame 4 is rotatably connected to an adjusting rod 5. The sampling assembly 6 is arranged outside the screw rod 3.

[0025] In some embodiments, the sampling assembly 6 includes a lifting frame 601. The lifting frame 601 is threadedly connected to the outside of the screw rod 3 and is slidably connected to the vertical frame 4. A load-bearing seat 602 is arranged at the outer end of the lifting frame 601, and an elastic band 603 is fixed to the upper part of the load-bearing seat 602. A sampling bottle 604 is arranged at the bottom of the elastic band 603. An intake one-way valve 605 is fixed to the middle of one side of the sampling bottle 604. A piston plate 606 is slidably connected to the inside of the sampling bottle 604, and an iron block 607 is fixed to the middle of one side of the piston plate 606. A magnet 608 is arranged on one side of the iron block 607, and a pull rod 609 is fixed to one side of the magnet 608. A limiting post 610 is slidably connected to the inside of one end of the pull rod 609. The pull rod 609 is slidably connected to the load-bearing seat 602, and the groove of the load-bearing seat 602 is U-shaped. A driving gear 611 is rotatably connected to the bottom of the lifting frame 601, and a gear ring 612 is engaged with one side of the driving gear 611. The gear ring 612 is rotatably connected to the lifting frame 601. The inner side of the driving gear 611 matches the outer side of the adjusting rod 5, and the driving gear 611 is slidably connected to the adjusting rod 5. A bottom plate 613 is fixed to one side of the gear ring 612, and a guiding strip 614 is arranged on the top of the bottom plate 613.

[0026] During the sampling process, by rotating the screw 3, the lifting frame 601 slides along the length direction of the vertical frame 4, thereby changing the height during sampling. In combination with the setting of multiple sampling bottles 604, it is possible to perform stratified multi-point sampling of the air, improving the sampling range. And during the sampling process, the adjusting rod 5 drives the driving gear 611 to rotate, thereby driving the bottom plate 613 to rotate one-eighth of a circle through the gear ring 612. During this process, the inclined surface of the guiding strip 614 contacts the limiting column 610, pulling the pull rod 609. At the same time, the load-bearing seat 602 limits and guides the pull rod 609, and the magnet 608 adsorbs the iron block 607, causing the piston plate 606 to move together. The inside of the sampling bottle 604 becomes in a negative pressure state, and the outside air will enter the sampling bottle 604 through the intake one-way valve 605, completing the sampling operation of the air at the current height.

[0027] It should be noted that when the limiting column 610 moves to the inner side of the circular arc of the guiding strip 614, the pull rod 609 will also move out of the sampling bottle 604, and the iron block 607 and the magnet 608 will separate. Therefore, in the subsequent process, just pull the elastic band 603 forcefully to release the restriction on the sampling bottle 604, facilitating the disassembly operation of the sampling bottle 604, making it convenient to bring it into the laboratory for testing and analysis. And there is a large frictional resistance between the limiting column 610 and the pull rod 609, which can provide stability during the sampling process of the equipment. When the pull rod 609 needs to be inserted into the sampling bottle 604 before sampling, just pull the limiting column 610 forcefully to avoid the guiding strip 614 blocking the limiting column 610, which is beneficial to improving the convenience during the installation process.

[0028] Please refer to Figures 1 to 8, the driving component 2 includes a reduction motor 201. The reduction motor 201 is installed at the lower end of one side of the box body 1, and the output shaft of the reduction motor 201 is connected to a double gear shaft 202. The double gear shaft 202 is rotatably connected to the box body 1. A driven gear 203 is meshed with the top of the double gear shaft 202, and a first spline shaft 204 is installed at the top of the driven gear 203. The first spline shaft 204 is rotatably connected to the box body 1. The top of the first spline shaft 204 is rotatably connected to a second spline shaft 205. One of the second spline shafts 205 is fixedly connected to the adjusting rod 5, and the top of the other second spline shaft 205 is connected to a gear box 206. The output shaft of the gear box 206 is fixedly connected to the screw rod 3. A spline sleeve 207 is sleeved on the outer side of the lower end of the second spline shaft 205. The outer side of the spline sleeve 207 is rotatably connected to a limiting sleeve 208. One side of the limiting sleeve 208 is fixedly connected to a sliding rod 209. The outer side of the sliding rod 209 is slidably connected to a rotating plate 210. The middle of the rotating plate 210 is rotatably connected to a central shaft 211. The central shaft 211 is fixedly connected to the box body 1. A one-way bearing 212 is installed at one end of the double gear shaft 202. A crankshaft 213 is fixed to the outer side of the one-way bearing 212. The crankshaft 213 is rotatably connected to the box body 1. A connecting rod 214 is rotatably connected to the middle of the crankshaft 213. The top of the connecting rod 214 is rotatably connected to a sliding seat 215. The sliding seats 215 are slidably connected to the box body 1 and the rotating plate 210 respectively.

[0029] During sampling, start the reduction motor 201 to make the double gear shaft 202 rotate, drive the first spline shaft 204 on the driven gear 203 to rotate synchronously. At this time, one of the spline sleeves 207 will connect between the first spline shaft 204 and the second spline shaft 205, and normal transmission operation can be carried out. The rotation speed of the screw rod 3 is increased through the gear box 206, so as to change the height during sampling; During this process, since the other second spline shaft 205 is not connected to the spline sleeve 207, it cannot rotate. Therefore, when changing the sampling height, the adjusting rod 5 will not rotate. At the same time, the double gear shaft 202 will also drive the inner ring of the one-way bearing 212 to rotate. And the one-way bearing 212 is in a locked state, and its inner and outer rings cannot rotate relative to each other, so it can drive the crankshaft 213 to rotate together. The connecting rod 214 will then pull the sliding seat 215 downward, driving the rotating plate 210 to rotate around the central axis 211. Thus, through the slide rod 209 and the limit sleeve 208, the heights of the two spline sleeves 207 on both sides are swapped. At this time, as the rotation of the screw 3 stops, the lifting frame 601 will stop lifting. At the same time, there is a certain frictional resistance between the lifting frame 601 and the vertical frame 4, which can balance the gravity of the sampling assembly 6 and prevent the screw 3 from rotating on its own. And the adjusting rod 5 will rotate, so it can drive the sampling assembly 6 to perform the sampling operation. Subsequently, as the double gear shaft 202 continues to rotate, the heights of the two spline sleeves 207 will change again. Therefore, during the detection process, the sampling assembly 6 will automatically move upward a certain distance and then perform the sampling operation. Thus, an equidistant sampling operation can be achieved without adding an additional drive source or control system, saving costs.

[0030] After the sampling is completed, when the control deceleration motor 201 rotates in the reverse direction, since the inner and outer rings of the one-way bearing 212 will be in an active state due to the reverse rotation and cannot transmit power, and at the same time, there is a large frictional resistance between the sliding seat 215 and the box body 1, and it cannot slide downward under the action of gravity. Therefore, the rotating plate 210 can be limited, enabling the screw 3 to continue to rotate in the reverse direction, which is beneficial to increasing the speed when the lifting frame 601 descends without pausing and reducing the overall sampling operation time.

[0031] A shielding assembly 7 can also be connected to one side of the load seat 602. Please refer to Figures 5 to 8 ; In some other embodiments, the shielding assembly 7 includes fixed ears 701. Fixed ears 701 are symmetrically fixed on one side of the load seat 602, and a rotating shaft 702 is arranged inside the fixed ears 701. Torsion springs 703 are sleeved at both ends of the rotating shaft 702, and one end of the torsion spring 703 is fixedly connected to the fixed ear 701. Moreover, the other end of the torsion spring 703 is fixedly connected to a baffle 704. And a fixed column 705 is arranged at the bottom of the baffle 704. An extension plate 706 is fixed on the outside of the bottom plate 613, and a convex strip 707 is arranged at the top of the extension plate 706. An exhaust check valve 8 is arranged inside the upper end of one side of the sampling bottle 604, and a sealing plate 9 is slidably connected to the upper end of one side of the sampling bottle 604. And an anti-slip strip 10 is arranged on one side of the sealing plate 9.

[0032] During the height adjustment process, the torsion spring 703 will keep the baffle 704 close to the side of the sampling bottle 604 under the limit of the fixed ear 701 to mask the intake one-way valve 605, thereby preventing the air at the current height from contacting the intake one-way valve 605, which is beneficial to reducing the interference of air at different heights and avoiding cross-contamination. During the sampling operation, before the bottom plate 613 drives the guide strip 614 to contact the limit post 610, the extension plate 706 will drive the convex strip 707 to fit with the fixed post 705, thereby pushing the fixed post 705 to drive the baffle 704 to rotate around the rotating shaft 702 into an open state. Therefore, the intake one-way valve 605 can be automatically exposed before sampling, and the longer tail of the convex strip 707 is used to keep the baffle 704 in the open state. After sampling, when the limit post 610 separates from the inclined surface of the guide strip 614, the convex strip 707 will also separate from the fixed post 705. Therefore, under the action of the torsion spring 703, the baffle 704 can cover the side of the sampling bottle 604 again, and at the same time, it can also play a limiting role. In addition, the sealing plate 9 can be used to cover the outside of the exhaust one-way valve 8 to prevent the outside of the exhaust one-way valve 8 from being contaminated and affecting the accuracy during the detection after the gas inside the sampling bottle 604 is discharged. At the same time, the anti-slip strip 10 is used to facilitate the movement operation of the sealing plate 9.

[0033] In summary, when in use, first pull the elastic band 603 forcefully and insert the sampling bottle 604 into the carrier seat 602, and then pull the limit post 610 upward forcefully to avoid the guide strip 614 from blocking the limit post 610, which is convenient for inserting the pull rod 609 into the sampling bottle 604, so that the magnet 608 adsorbs the iron block 607 to connect the pull rod 609 and the piston plate 606, and then reset the limit post 610; Secondly, start the reduction motor 201 to make the double gear shaft 202 rotate, which will drive the first spline shaft 204 on the driven gear 203 to rotate synchronously. At this time, one of the spline sleeves 207 will connect between the first spline shaft 204 and the second spline shaft 205, and normal transmission operation can be carried out. The gearbox 206 is used to increase the number of rotation turns of the screw rod 3, so that the lifting frame 601 slides along the length direction of the vertical frame 4, thereby changing the height during sampling. During this process, the other second spline shaft 205 cannot rotate because there is no connection of the spline sleeve 207. At the same time, during the height adjustment process, the torsion spring 703 will keep the baffle 704 close to the side of the sampling bottle 604 under the limit of the fixed ear 701 to mask the intake one-way valve 605, thereby preventing the air at the current height from contacting the intake one-way valve 605; Next, the double gear shaft 202 will also drive the inner ring of the one-way bearing 212 to rotate. Since the one-way bearing 212 is in a locked state and its inner and outer rings cannot rotate relative to each other, it can drive the crankshaft 213 to rotate together. The connecting rod 214 will then pull the slide seat 215 downward, driving the rotating plate 210 to rotate around the central axis 211. As a result, the height of the two spline sleeves 207 on both sides is swapped through the slide rod 209 and the limit sleeve 208. At this time, as the rotation of the screw 3 stops, the lifting frame 601 will stop lifting, and the adjusting rod 5 will drive the driving gear 611 to rotate, thereby driving the bottom plate 613 to rotate one-eighth of a turn through the gear ring 612. And before the bottom plate 613 drives the guiding strip 614 to contact the limit post 610, the extension plate 706 will drive the convex strip 707 to fit with the fixed post 705, thereby pushing the fixed post 705 to drive the baffle 704 to rotate around the rotating shaft 702 into an open state. Therefore, the intake one-way valve 605 can be automatically exposed before sampling, and the long tail of the convex strip 707 is used to keep the baffle 704 in the open state; Then, the inclined surface of the guiding strip 614 will contact the limit post 610, pulling the pull rod 609. At the same time, the load-bearing seat 602 will limit and guide the pull rod 609, and the magnet 608 will also attract the iron block 607, enabling the piston plate 606 to move together. The inside of the sampling bottle 604 will be in a negative pressure state, and the external air will enter the sampling bottle 604 through the intake one-way valve 605, completing the sampling operation of the air at the current height. When the limit post 610 moves to the inner side of the circular arc of the guiding strip 614, the pull rod 609 will also move out of the sampling bottle 604, and the iron block 607 and the magnet 608 will separate. When the limit post 610 separates from the inclined surface of the guiding strip 614, the convex strip 707 will also separate from the fixed post 705. Therefore, under the action of the torsion spring 703, the baffle 704 can block the side of the sampling bottle 604 again, and at the same time, it can also play a limiting role, and the sealing plate 9 can be used to block the outside of the exhaust one-way valve 8 to prevent the outside of the exhaust one-way valve 8 from being contaminated and affecting the accuracy during the detection after the gas inside the sampling bottle 604 is discharged; After that, as the double gear shaft 202 continues to rotate, the height of the two spline sleeves 207 will change again. Therefore, during the detection process, the sampling assembly 6 will automatically move upward a certain distance and then perform the sampling operation; Finally, after the sampling is completed, when the control deceleration motor 201 rotates in the reverse direction, since the inner and outer rings of the one-way bearing 212 will be in an active state due to the reverse rotation and cannot transmit power, the rotating plate 210 can be limited, enabling the screw 3 to continue to rotate in the reverse direction, which is beneficial to increasing the speed of the lifting frame 601 when it descends. Subsequently, simply pulling the elastic band 603 forcefully can release the restriction on the sampling bottle 604, facilitating the disassembly operation of the sampling bottle 604 and making it convenient to carry it into the laboratory for detection and analysis.

[0034] In this article, specific examples are used to illustrate the principles and implementation manners of the present invention. The descriptions of the above examples are only used to help understand the method of the present invention and its core idea. The above description is only the preferred implementation manner of the present invention. It should be noted that due to the limitation of literal expression and objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, retouches or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. An environmental detection multi-point sampling device, characterized in that, It includes a box body and a sampling component. A driving component is arranged inside the box body, and a screw rod is connected to the top of the driving component. The top of the screw rod is rotatably connected to a vertical frame, and a regulating rod is rotatably connected inside one end of the vertical frame. The sampling component is arranged outside the screw rod. The sampling component includes a lifting frame. The lifting frame is threadedly connected to the outside of the screw rod and is slidably connected to the vertical frame. A load-bearing seat is arranged at the outer end of the lifting frame, and an elastic band is fixed to the upper part of the load-bearing seat. A sampling bottle is arranged at the bottom of the elastic band. An intake check valve is fixed to the middle of one side of the sampling bottle. A piston plate is slidably connected inside the sampling bottle, and an iron block is fixed to the middle of one side of the piston plate. A magnet is arranged on one side of the iron block, and a pull rod is fixed to one side of the magnet. And a limiting column is slidably connected inside one end of the pull rod. A driving gear is rotatably connected to the bottom of the lifting frame, and a gear ring is engaged with one side of the driving gear. The gear ring is rotatably connected to the lifting frame. A bottom plate is fixed to one side of the gear ring, and a guiding strip is arranged on the top of the bottom plate.

2. The multi-point sampling device for environmental detection according to claim 1, wherein The pull rod is slidably connected to the load-bearing seat, and the groove of the load-bearing seat is U-shaped.

3. The multi-point sampling device for environmental detection according to claim 1, wherein, The inner side of the driving gear is matched with the outer side of the regulating rod, and the driving gear is slidably connected to the regulating rod.

4. The environmental detection multi-point sampling device according to claim 1, characterized in that, The driving component includes a reduction motor. The reduction motor is arranged at the lower end of one side of the box body, and the output shaft of the reduction motor is connected to a double gear shaft, and the double gear shaft is rotatably connected to the box body. A driven gear is engaged with the top of the double gear shaft, and a first spline shaft is arranged at the top of the driven gear, and the first spline shaft is rotatably connected to the box body.

5. An environmental detection multi-point sampling device according to claim 4, characterized in that, The top of the first spline shaft is rotatably connected to a second spline shaft. One of the second spline shafts is fixed to the regulating rod, and the top of the other second spline shaft is connected to a gear box, and the output shaft of the gear box is fixed to the screw rod.

6. The multi-point sampling device for environmental detection according to claim 5, characterized in that, A spline sleeve is sleeved on the outer side of the lower end of the second spline shaft. A limiting sleeve is rotatably connected to the outer side of the spline sleeve. A sliding rod is fixed to one side of the limiting sleeve. A rotating plate is slidably connected to the outer side of the sliding rod. A central shaft is rotatably connected to the middle of the rotating plate, and the central shaft is fixed to the box body.

7. An environmental detection multi-point sampling device according to claim 6, characterized in that, A one-way bearing is arranged at one end of the double gear shaft. A crankshaft is fixed to the outer side of the one-way bearing, and the crankshaft is rotatably connected to the box body. A connecting rod is rotatably connected to the middle of the crankshaft. A sliding seat is rotatably connected to the top of the connecting rod, and the sliding seats are slidably connected to the box body and the rotating plate respectively.

8. The environmental detection multi-point sampling device according to claim 1, characterized in that, A shielding component is connected to one side of the load-bearing seat. The shielding component includes fixing ears. Fixing ears are symmetrically fixed to one side of the load-bearing seat. A rotating shaft is arranged inside the fixing ears. Torsion springs are sleeved at both ends of the rotating shaft. One end of the torsion spring is fixed to the fixing ear, and the other end of the torsion spring is fixed to a baffle plate. And a fixing column is arranged at the bottom of the baffle plate.

9. The environmental detection multi-point sampling device according to claim 8, characterized in that, An extension plate is fixed to the outer side of the bottom plate, and a convex strip is arranged on the top of the extension plate.

10. The multi-point sampling device for environmental detection according to claim 1, characterized in that, An exhaust check valve is arranged inside the upper end of one side of the sampling bottle. A sealing plate is slidably connected to the upper end of one side of the sampling bottle, and an anti-slip strip is arranged on one side of the sealing plate.

Images