Portable multipoint sampling device for water environment monitoring

Abstract

The invention discloses a portable multi-point sampling device used in water environment monitoring, which comprises a shell and a sampling mechanism, the sampling mechanism is installed in the shell and has a motion stroke extending out of or retracting into the shell, the sampling mechanism comprises a sampling rod, a sampling box and a transmission assembly, the sampling box is internally provided with a sampling barrel and a gear set, and the transmission assembly is connected with the sampling barrel. The sampling barrel abuts against the small hole plate, the gear set comprises a piston tooth column, the piston tooth column is embedded in a barrel body of the sampling barrel and is in sliding fit with the sampling barrel, the transmission assembly is installed in the sampling rod and comprises a plate side gear, a transmission gear and a chain belt, and the chain belt is in transmission fit with the side gear and the multiple transmission gears. According to the invention, continuous and multi-point sampling can be carried out on different water layers or different sampling areas of the same sampling point, the problem of one-sidedness of traditional single-point sampling data is effectively solved, and more comprehensive and more powerful data support is provided for comprehensive evaluation of the water environment.

Description

Technical Field

[0001] This invention relates to the field of water environment monitoring technology, and more specifically to a portable multi-point sampling device used in water environment monitoring. Background Technology

[0002] Water environment monitoring, as a crucial foundation for water resource protection and pollution control, serves not only as the "eyes" for regulatory authorities to grasp water quality dynamics and formulate pollution prevention and control policies, but also as a key line of defense to ensure the safety of drinking water for residents and maintain the balance of the aquatic ecosystem. Accurate and comprehensive water sampling is a prerequisite for obtaining reliable monitoring data, directly impacting the scientific validity of water quality assessment, pollution source tracing, and ecological restoration decisions. In water quality assessment, indicators such as chemical oxygen demand (COD), biochemical oxygen demand (BOD), and ammonia nitrogen in water samples directly reflect the degree of organic pollution in the water body, providing a basis for determining water quality categories. Detection of heavy metal ions, such as lead, mercury, and cadmium, and persistent organic pollutants, such as polychlorinated biphenyls (PCBs) and dioxins, in water samples can assess potential health risks.

[0003] In the process of water environment monitoring, it is necessary to sample and test whether the values ​​in the water are within acceptable limits. In the existing technology, the sampling box of traditional sampling devices is mostly set in the sampling rod. If the internal parts are damaged or need to be replaced, the operation is inconvenient. In addition, since the water sample values ​​are different at different water levels, if only one sample is taken, the data may not be convincing enough. Summary of the Invention

[0004] The present invention provides a portable multi-point sampling device for water environment monitoring that is simpler and more flexible to operate and more accurate and reliable to detect, which can at least solve one of the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A portable multi-point sampling device for water environment monitoring includes a housing and a sampling mechanism; The sampling mechanism is installed inside the housing and has a travel stroke for extending or retracting from the housing. The sampling mechanism includes a sampling rod, a sampling box, and a transmission assembly. The sampling rod is provided with multiple placement slots evenly spaced along its own length, and the sampling box is provided in multiple ways, each corresponding to and matching one of the placement slots; The sampling box is equipped with a sampling tube and a gear set inside. The sampling tube is pressed against the front panel of the sampling box - the perforated plate, and the opening of the sampling tube matches the water flow hole opened on the perforated plate. The gear set includes a piston tooth column, which is embedded in the tube of the sampling tube and slides with the sampling tube. The transmission assembly is installed inside the sampling rod and includes a plate-side gear, a transmission gear, and a chain. The chain is matched with the plate-side gear and multiple transmission gears. The plate-side gear is the driving gear and meshes with the gear set in any of the sampling boxes, having a stroke that drives the piston pin to extend and retract along the sampling cylinder to perform pumping / draining. The transmission gear is the driven gear and meshes with the gear sets in the remaining sampling boxes one by one. Under the transmission action of the chain, it has a stroke that drives the remaining piston pins to extend and retract synchronously along each of the sampling cylinders to perform pumping / draining.

[0006] Furthermore, the gear set also includes a side tooth post, a first bevel gear, a second bevel gear, and an extended tooth post; The piston tooth column, the side tooth column, the first bevel gear and the second bevel gear are sequentially meshed and connected. The extended tooth column is connected to the second bevel gear and extends outward from the back panel of the sampling box, meshing and connected with the plate side gear or the transmission gear. The plate side gear or the transmission gear has a stroke that sequentially drives the extension tooth column, the second bevel gear, the first bevel gear, the side tooth column and the piston tooth column to rotate. Under the action of meshing transmission, the piston tooth column slides against the inner wall of the sampling cylinder to perform negative pressure water absorption or squeeze water drainage.

[0007] Furthermore, the transmission assembly also includes a mounting plate, which is installed inside the sampling rod and distributed along the length of the sampling rod. The side gear and a plurality of transmission gears are respectively evenly spaced on the mounting plate.

[0008] Furthermore, the sampling mechanism also includes a latching assembly, which includes a spring, an internal gear, and an internal toothed plate. The internal gear and the internal gear plate are sequentially meshed and connected to the side of the sampling box. The inner side wall of the placement slot is provided with a slot. The internal gear plate is inserted and matched with the slot. The spring is fixed to the back of the sampling box and connected to the placement slot. The internal gear has a forward / reverse rotation to drive the internal gear plate to pop out / retract into the slot.

[0009] Furthermore, it also includes a transmission mechanism disposed inside the housing, which includes a worm, a worm wheel, a belt, and an internal gear; The worm and the internal gear are respectively installed at the top and bottom of the outer shell. The worm wheel is meshed with the worm. The belt is matched with the worm wheel and the internal gear for transmission. The sampling rod has multiple toothed grooves evenly spaced along its own length direction. The internal gear is meshed with the toothed grooves.

[0010] Furthermore, a rocker arm is installed on the outer casing, and the output shaft of the rocker arm passes through the outer casing and is fixedly connected to the worm gear, for sequentially driving the worm gear, the worm wheel, the belt and the gear inside the casing to rotate, and driving the sampling rod to extend or retract from the outer casing.

[0011] Furthermore, a handle is mounted on the top of the housing.

[0012] Furthermore, a central control display screen is installed on the outer casing.

[0013] Furthermore, an adjustable shoulder strap is attached to the outer casing.

[0014] The beneficial effects of this invention are reflected in: 1. In this invention, the device rotates via a side gear, which drives multiple transmission gears to operate synchronously via a chain belt. This enables multiple sampling boxes to sample water at different depths. Multiple placement slots are provided on the side of the sampling rod to store the sampling boxes. This allows for rapid and continuous collection of water samples at different water levels at the same sampling point, avoiding the bias of data caused by single sampling. It can more comprehensively reflect the three-dimensional distribution characteristics of pollutants in the water, providing more convincing data for water quality assessment and pollution source tracing, and significantly improving the reliability and scientific nature of water environment monitoring data.

[0015] 2. In this invention, the device adopts a separate design for the sampling box and the sampling rod. Through the meshing structure of the gear and the toothed plate inside the box, the sampling box can be quickly disassembled and assembled. When the internal parts are damaged or need to be replaced, it is only necessary to control the rotation of the gear inside the box to pull the toothed plate out of the slot. The sampling box is popped out by the elastic potential energy accumulated by the spring. Compared with the traditional integrated sampling components, there is no need for complicated tools and cumbersome procedures, which greatly reduces the difficulty of maintenance and improves the maintainability and efficiency of the equipment. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0018] Figure 2 This is an isometric view of the sampling rod according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the internal structure of the sampling box according to an embodiment of the present invention.

[0020] Figure 4 This is an embodiment of the present invention. Figure 3 Enlarged schematic diagram of section C.

[0021] Figure 5 This is a schematic diagram of the assembly of the transmission component and gear set according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the card slot in the placement slot according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the transmission mechanism structure in the outer casing of an embodiment of the present invention.

[0024] Figure 8 This is an embodiment of the present invention. Figure 7 Enlarged schematic diagram of section A in the middle.

[0025] Figure 9 This is an embodiment of the present invention. Figure 7 Enlarged schematic diagram of section B in the middle.

[0026] The components in the attached diagram are labeled as follows: 1. Housing; 2. Rocker arm; 3. Grip; 4. Central control display screen; 5. Worm gear; 6. Worm wheel; 7. Belt; 8. Sampling rod; 9. Internal gear; 10. Placement slot; 11. Sampling box; 110. Spring; 12. Internal gear; 13. Internal gear plate; 14. Piston gear; 15. Small hole plate; 16. Side gear; 17. First bevel gear; 18. Second bevel gear; 19. Extension gear; 20. Mounting plate; 21. Side gear; 210. Transmission gear; 22. Chain; 23. Sampling cylinder; 24. Slot. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve descriptions such as "first" and "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include at least one of those features. Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Additionally, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0029] See Figures 1-5 This invention provides a portable multi-point sampling device for water environment monitoring, including a housing 1 and a sampling mechanism; The sampling mechanism is installed inside the housing 1 and has a movement stroke that extends out of or retracts from the housing 1. The sampling mechanism includes a sampling rod 8, a sampling box 11, and a transmission assembly. The sampling rod 8 is provided with a plurality of placement slots 10 evenly spaced along its own length direction, and the sampling box 11 has a plurality of slots, each corresponding to and matching one of the placement slots 10. The sampling box 11 is provided with a sampling cylinder 23 and a gear set inside. The sampling cylinder 23 is pressed against the front panel of the sampling box 11 - the perforated plate 15, and the opening of the sampling cylinder 23 matches the water flow hole opened on the perforated plate 15. The gear set includes a piston tooth 14, which is embedded in the cylinder of the sampling cylinder 23 and slides with the sampling cylinder 23. The transmission assembly is installed inside the sampling rod 8 and includes a side gear 21, a transmission gear 210, and a chain 22. The chain 22 is matched with the side gear 21 and the multiple transmission gears 210. The side gear 21 is a driving gear that meshes with the gear set in any of the sampling boxes 11 and has a stroke that drives the piston pin 14 to move telescopically along the sampling cylinder 23 to pump / drain water. The transmission gear 210 is a driven gear that meshes with the remaining gear sets in the sampling boxes 11 one by one. Under the transmission action of the chain 22, it has a stroke that drives the remaining piston pins 14 to move synchronously telescopically along each of the sampling cylinders 23 to pump / drain water.

[0030] In this invention, the design of multiple placement slots 10 allows the sampling rod 8 to simultaneously load multiple sampling boxes 11, enabling continuous, multi-point sampling of different water layers or different sampling areas at the same sampling point. This effectively solves the problem of one-sided data from traditional single-point sampling. Through a single equipment placement and retrieval, multi-level and multi-area water samples can be obtained, reducing the number of repetitive operations, improving monitoring efficiency, and ensuring the systematic and complete nature of water sample collection. This provides more comprehensive and powerful data support for the comprehensive assessment of the water environment.

[0031] See Figures 3-5 In this embodiment, the gear set further includes a side tooth post 16, a first bevel gear 17, a second bevel gear 18, and an extended tooth post 19; The piston pin 14, the side pin 16, the first bevel gear 17 and the second bevel gear 18 are sequentially meshed and connected. The extension pin 19 is connected to the second bevel gear 18 and extends outward from the back panel of the sampling box 11, meshing and connected with the plate side gear 21 or the transmission gear 210. The plate-side gear 21 or the transmission gear 210 has a stroke that sequentially drives the extension tooth column 19, the second bevel gear 18, the first bevel gear 17, the side tooth column 16 and the piston tooth column 14 to rotate. Under the action of meshing transmission, the piston tooth column 14 slides against the inner wall of the sampling cylinder 23 to perform negative pressure water absorption or squeeze water drainage.

[0032] In this design, the perforated plate 15 serves as the front panel of the sampling box 11, with water flow holes for pumping or draining water. The sampling cylinder 23 is fixedly connected to the perforated plate 15, with its opening aligned with the water flow holes. The diameter of the cylinder opening should be slightly larger than the diameter of the water flow holes. The piston pin 14 is embedded inside the sampling cylinder 23. In the non-working state, its pin head abuts against the perforated plate 15 and blocks the water flow holes. In the working state, due to the transmission action of the gear set, the piston pin 14 moves along the inner wall of the sampling cylinder 23, forming a stable negative or positive pressure to precisely control the collection and release of water samples, realizing the extraction and discharge of water samples. At the same time, the gear rotation connection structure facilitates the inspection and maintenance of the internal transmission components of the sampling box 11, extending the service life of the equipment.

[0033] It should be noted that the piston tooth column 14 adopts a piston structure similar to that inside a needle tube, and the sealing between it and the sampling cylinder 23 can be satisfied to ensure that there is no leakage or overflow.

[0034] See Figures 3-5In this embodiment, the transmission assembly further includes a mounting plate 20, which is installed inside the sampling rod 8 and distributed along the length direction of the sampling rod 8. The side gear 21 and a plurality of transmission gears 210 are respectively evenly spaced on the mounting plate 20.

[0035] With this design, the sampling rod 8 should have a strip-shaped cavity along its own length to accommodate the transmission component. The extended toothed column 19 extending from the back of each sampling box 11 passes through the placement groove 10 and extends into the strip-shaped cavity to mesh with the side gear 21 or the transmission gear 210. In the working state, the drive gear, namely the side gear 21, is controlled to rotate. Under the meshing transmission of the gear set, in a certain sampling box 11 connected to the measuring gear 21, the piston tooth column 14 moves in extension and retraction against the sampling cylinder 23, forming a stable negative or positive pressure between the sampling cylinder 23 and the small orifice plate 15. The water sample is then extracted or discharged through the water flow hole. At the same time, due to the transmission connection of the chain belt 22, each driven gear, namely the transmission gear 210, is driven to rotate synchronously. Similarly, the remaining sampling boxes 11, which are connected one-to-one with each of the transmission gears 210, undergo the same water sample extraction or discharge conditions. Thus, in the transmission assembly of this sampling mechanism, only one output end needs to be set on the side gear 21, and the rest of the transmission gears 210 are driven ends. With a single command release, water samples from all the sampling boxes 11 can be extracted or discharged simultaneously, which is efficient and fast.

[0036] It should be noted that the output terminal in the transmission assembly can be an existing control element such as a sensor or motor, without any special limitations, and its working principle is not protected in detail.

[0037] See Figure 3 and Figure 6 In this embodiment, the sampling mechanism further includes a buckle assembly, which includes a spring 110, an internal gear 12, and an internal gear plate 13. The internal gear 12 and the internal gear plate 13 are sequentially meshed and connected to the side of the sampling box 11. The inner side wall of the placement groove 10 is provided with a slot 24. The internal gear plate 13 is inserted and matched with the slot 24. The spring 110 is fixed to the back of the sampling box 11 and connected to the placement groove 10. The internal gear 12 has a forward / reverse rotation to drive the internal gear plate 13 to pop out / retract into the slot 24.

[0038] This design, with the internal gear plate 13 engaging with the slot 24, provides a stable mounting and positioning structure for the sampling box 11. When the internal gear 12 rotates forward, driving the internal gear plate 13 to insert into the slot 24, it ensures that the sampling box 11 remains stable and fixed within the sampling rod 8, preventing it from falling off or shifting due to shaking or collision during sampling. Conversely, when the internal gear 12 rotates backward, driving the internal gear plate 13 to pull out of the slot 24, the spring 110 is released elastically, and the sampling box 11 pops out of the placement slot 10. Thus, the sampling box 11 can be quickly installed and removed from the sampling rod 8, facilitating not only the installation for water sampling but also the separate removal of discharged water samples, as well as subsequent replacement or cleaning. This provides convenience for equipment maintenance and sample replacement, improving overall operational efficiency.

[0039] It should be noted that the gear 12 inside the box in each snap-fit ​​assembly is independently controlled and has an independent output end. Its control principle is the same as that of the output end in the transmission assembly, and will not be elaborated on here.

[0040] See Figures 7-9 In this embodiment, a transmission mechanism is also included, which is disposed inside the housing 1 and includes a worm 5, a worm wheel 6, a belt 7 and an internal gear 9. The worm 5 and the internal gear 9 are respectively installed at the top and bottom of the outer shell 1. The worm wheel 6 is meshed with the worm 5. The belt 7 is matched with the worm wheel 6 and the internal gear 9 for transmission. The sampling rod 8 has multiple toothed grooves evenly spaced along its own length direction. The internal gear 9 is meshed with the toothed grooves.

[0041] With this design, when the worm 5 is rotated under control during operation, the gear 9 inside the housing rotates synchronously with the worm 5 under the meshing and transmission action of the worm wheel 6 and the belt 7. Under the meshing and matching action of the gear in the tooth groove, the forward and reverse rotation of the gear can drive the extension and retraction of the sampling rod 8, realizing its extension or retraction in the outer shell 1.

[0042] See Figure 1 and Figure 8 In this embodiment, a rocker arm 2 is installed on the outer shell 1. The output shaft of the rocker arm 2 passes through the outer shell 1 and is fixedly connected to the worm gear 5. It is used to drive the worm gear 5, the worm wheel 6, the belt 7 and the gear 9 inside the shell to rotate in sequence, and drive the sampling rod 8 to extend or retract from the outer shell 1. A handle 3 is mounted on the top of the outer casing 1; A central control display screen 4 is installed on the outer casing 1; An adjustable shoulder strap is attached to the outer casing 1.

[0043] With this design, the side of the outer shell 1 is evenly spaced with multiple positioning holes, which, together with the grip 3, allow for sliding positioning. This enables the grip 3 to be adjusted according to the operator's habits, improving hand comfort and operational flexibility. Additionally, the soft, adjustable shoulder strap allows for easy carrying by technicians. Furthermore, the central control display screen 4 is integrated into the side of the outer shell 1, allowing operators to view the equipment's operating status and sampling parameters, such as sampling depth and number of sampling attempts, enabling precise control of the sampling process. The integrated design of the central control display screen 4 effectively prevents damage from impacts caused by external placement, enhancing the overall reliability of the equipment.

[0044] It should be noted that the central control display screen 4 and related communication protocols, data analysis and processing principles all follow existing technologies, and are not specifically limited here, nor are their specific principles protected in detail.

[0045] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A portable multi-point sampling device for water environment monitoring, characterized in that, Includes the outer casing (1) and the sampling mechanism; The sampling mechanism is installed inside the housing (1) and has a movement stroke that extends out of or retracts from the housing (1). The sampling mechanism includes a sampling rod (8), a sampling box (11), and a transmission assembly. The sampling rod (8) has multiple placement slots (10) evenly spaced along its length direction, and the sampling box (11) has multiple slots, each corresponding to and matching one of the placement slots (10). The sampling box (11) is provided with a sampling tube (23) and a gear set inside. The sampling tube (23) is pressed against the front panel of the sampling box (11) - the perforated plate (15), and the opening of the sampling tube (23) matches the water flow hole opened on the perforated plate (15). The gear set includes a piston tooth column (14), which is embedded in the tube of the sampling tube (23) and slides with the sampling tube (23). The transmission assembly is installed inside the sampling rod (8) and includes a plate-side gear (21), a transmission gear (210), and a chain (22). The chain (22) is matched with the plate-side gear (21) and multiple transmission gears (210). The plate-side gear (21) is a driving gear that meshes with the gear set in any of the sampling boxes (11) and has a stroke that drives the piston pin (14) to move along the sampling cylinder (23) for pumping / draining. The transmission gear (210) is a driven gear that meshes with the remaining gear sets in the sampling boxes (11) one by one. Under the transmission action of the chain (22), it has a stroke that drives the remaining piston pins (14) to move synchronously along the sampling cylinders (23) for pumping / draining.

2. The portable multi-point sampling device for water environment monitoring as described in claim 1, characterized in that, The gear set also includes a side tooth post (16), a first bevel gear (17), a second bevel gear (18), and an extension tooth post (19). The piston pin (14), the side pin (16), the first bevel gear (17) and the second bevel gear (18) are sequentially meshed and connected. The extension pin (19) is connected to the second bevel gear (18) and extends outward from the back panel of the sampling box (11) to mesh with the plate side gear (21) or the transmission gear (210). The plate side gear (21) or the transmission gear (210) has a stroke that sequentially drives the extension tooth column (19), the second bevel gear (18), the first bevel gear (17), the side tooth column (16) and the piston tooth column (14) to rotate. Under the meshing transmission action, the piston tooth column (14) slides against the inner wall of the sampling cylinder (23) to perform negative pressure water absorption or squeeze drainage.

3. The portable multi-point sampling device for water environment monitoring as described in claim 1, characterized in that, The transmission assembly also includes a mounting plate (20), which is installed inside the sampling rod (8) and distributed along the length of the sampling rod (8). The side gear (21) and a plurality of transmission gears (210) are respectively evenly spaced on the mounting plate (20).

4. The portable multi-point sampling device for water environment monitoring as described in claim 1, characterized in that, The sampling mechanism also includes a buckle assembly, which includes a spring (110), an internal gear (12), and an internal toothed plate (13). The gear (12) inside the box and the gear plate (13) inside the box are sequentially meshed and connected to the side of the sampling box (11). The inner side wall of the placement groove (10) is provided with a slot (24). The gear plate (13) inside the box is inserted and matched with the slot (24). The spring (110) is fixed to the back of the sampling box (11) and connected to the placement groove (10). The gear (12) inside the box has a forward / reverse rotation to drive the gear plate (13) inside the box to pop out / retract into the slot (24).

5. The portable multi-point sampling device for water environment monitoring as described in claim 1, characterized in that, It also includes a transmission mechanism, which is disposed inside the housing (1) and includes a worm (5), a worm wheel (6), a belt (7) and an internal gear (9). The worm (5) and the internal gear (9) are respectively installed at the top and bottom of the outer shell (1). The worm wheel (6) is meshed with the worm (5). The belt (7) is matched with the worm wheel (6) and the internal gear (9) for transmission. The sampling rod (8) has multiple toothed grooves evenly spaced along its own length direction. The internal gear (9) is meshed with the toothed grooves.

6. The portable multi-point sampling device for water environment monitoring as described in claim 5, characterized in that, A rocker arm (2) is installed on the outer shell (1). The output shaft of the rocker arm (2) passes through the outer shell (1) and is fixedly connected to the worm gear (5). It is used to drive the worm gear (5), the worm wheel (6), the belt (7) and the gear (9) inside the shell to rotate in sequence, and drive the sampling rod (8) to extend or retract from the outer shell (1).

7. The portable multi-point sampling device for water environment monitoring as described in claim 1, characterized in that, A handle (3) is mounted on the top of the outer casing (1).

8. The portable multi-point sampling device for water environment monitoring as described in claim 1, characterized in that, A central control display screen (4) is installed on the outer casing (1).

9. The portable multi-point sampling device for water environment monitoring as described in claim 1, characterized in that, An adjustable strap is attached to the outer shell (1).

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