Sewage sampling device for environmental monitoring

Abstract

The utility model discloses a sewage sampling device for environmental protection monitoring, which comprises a frame, a linear water pumping mechanism, a pumping pipe clamping mechanism and a clamping auxiliary mechanism, the linear water pumping mechanism comprises a linear pusher, a push-pull block, a piston rod, a liquid pumping pipe and a pressing block, the pumping pipe clamping mechanism comprises a clamping pipe, a clamping rod, an embedding groove, an embedding plate, an embedding rotating ring and a push-pull rod, the linear pumping mechanism realizes an efficient and accurate sewage sampling function, and the detachable connection design of a piston rod and a push-pull block greatly improves the convenience of maintenance and cleaning; the embedded rotating ring rotates to drive the push-pull rod to control the embedded plate to extend into or be far away from the embedded groove in the side wall of the clamping rod, mechanical locking is formed, strong fixing force is provided, and meanwhile the convenience of quick disassembly and assembly is kept.

Description

Technical Field

[0001] This utility model relates to the field of sampling technology, and more specifically, to a wastewater sampling device for environmental monitoring. Background Technology

[0002] In existing technologies, the installation and disassembly of the liquid extraction pipe in a wastewater sampling device for environmental monitoring is inconvenient, and the stable installation effect of the easily disassembled liquid extraction pipe is poor. These defects seriously restrict the efficiency and quality of environmental monitoring work.

[0003] Firstly, traditional wastewater sampling devices typically use threaded connections or clamps to secure the sampling pipe. These methods require operators to use specialized tools for assembly and disassembly, which is difficult in complex field environments. Especially in inclement weather or low-light conditions, this assembly and disassembly method is both time-consuming and labor-intensive, significantly reducing sampling efficiency. Repeated tightening and loosening of the threads can also easily lead to wear and fatigue of parts, shortening the equipment's lifespan.

[0004] Secondly, to improve the ease of disassembly of the suction tube, some designs employ quick-connect structures. However, these structures often suffer from insecure fixation. During the suction process, the reciprocating motion of the piston rod generates significant vibration and tension, causing the simple quick-disassembly suction tube to easily loosen, shift, or even detach. This not only affects the accuracy and continuity of sampling but may also lead to wastewater leakage, posing a risk of secondary pollution and safety hazards. Utility Model Content

[0005] In view of the problems existing in the prior art, this utility model provides a wastewater sampling device for environmental monitoring, so as to solve the technical problems mentioned in the background art, such as the inconvenience of installing and disassembling the liquid extraction pipe, and the poor stable installation effect of the liquid extraction pipe that is easy to disassemble.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wastewater sampling device for environmental monitoring, comprising a frame, a linear pumping mechanism, a pipe clamping mechanism, and a clamping auxiliary mechanism. The linear pumping mechanism includes a linear pusher, a push-pull block, a piston rod, a liquid extraction pipe, and a pressure block. The linear pusher is installed on the side of the frame, the push-pull block is installed at one end of the linear pusher, one end of the piston rod is detachably connected to the push-pull block, the liquid extraction pipe is set inside the frame, the piston rod is movably installed inside the liquid extraction pipe, and the pressure block presses against one end of the liquid extraction pipe. The pipe clamping mechanism includes a clamping pipe, a clamping rod, an embedding groove, an embedding plate, a rotating ring, and a push-pull rod. The clamping rod can extend into the clamping pipe, the embedding groove is set on the side wall of the clamping rod, the embedding plate and the rotating ring are respectively limited and rotatably installed inside the side wall of the clamping pipe, and both ends of the push-pull rod are rotatably connected to the rotating ring and the embedding plate. The rotation of the rotating ring causes the push-pull rod to pull or push the embedding plate, and the embedding plate can extend into or away from the embedding groove.

[0007] The present invention is further configured such that the snap-fit ​​auxiliary mechanism includes a driving plate, a limiting ring, a positioning ring, a mating ring, and spring-loaded pins. The driving plate is installed on the outer end of the snap-fit ​​ring and is connected to the limiting ring. The limiting ring is installed on the outer wall of the snap-fit ​​tube to limit rotation. The positioning ring is installed on the bottom end of the limiting ring. The mating ring is fixedly installed on the bottom end of the side wall of the snap-fit ​​tube. Multiple sets of spring-loaded pins are arranged in a ring around the mating ring. One end of each spring-loaded pin pushes towards the bottom end of the positioning ring, so that the positioning ring and the limiting ring rotate stably, and the driving plate stably drives the snap-fit ​​ring to rotate.

[0008] The present invention is further configured such that a support plate is installed on the side of the frame, and the clamping tube is fixedly installed on the support plate. The support plate is installed on the side of the frame to provide a stable installation position for the clamping tube and enhance the overall structural stability.

[0009] The present invention is further configured such that a connecting plate is installed at the bottom end of the side wall of the card tube, and the connecting plate is fixedly installed at the bottom end of the support plate. The connecting plate is installed at the bottom of the side wall of the card tube and fixed at the bottom of the support plate, thereby enhancing the stability of the card tube.

[0010] The present invention is further configured such that the locking rod is fixedly connected to the pressure block, and the locking rod can pass through the support plate and engage with the locking tube. The locking rod is fixedly connected to the pressure block, can extend into the locking tube and pass through the support plate to achieve initial locking.

[0011] The present invention is further configured such that a pressure plate is installed on one side of the liquid extraction tube, and a pressure block can press against the pressure plate to fix the liquid extraction tube in the frame. The pressure plate is installed on one side of the liquid extraction tube and cooperates with the pressure block to increase the firmness of the liquid extraction tube.

[0012] The present invention is further configured such that a limiting arc groove is provided on the embedded rotating ring, and a guide block is fixedly installed inside the side wall of the clamping pipe, and the guide block is limited to rotate within the limiting arc groove. The limiting arc groove and the guide block cooperate to limit the rotation range and ensure operational safety.

[0013] The present invention is further provided that a handle is installed on the side of the frame, which facilitates the operator to carry and position the device, thereby improving the convenience of on-site operation.

[0014] Compared with the prior art, this utility model provides a wastewater sampling device for environmental monitoring, which has the following beneficial effects:

[0015] This utility model is equipped with a linear pumping mechanism, which adopts a combination design of a linear pusher, a push-pull block, a piston rod, and a pumping pipe. This design enables efficient and accurate sewage sampling. The detachable connection design of the piston rod and the push-pull block greatly improves the convenience of maintenance and cleaning. The cooperation and fixing method between the pressure block and the pressure plate ensures that the pumping pipe is installed firmly and reliably, effectively solving the technical problem of inconvenient installation and disassembly of the pumping pipe in traditional devices.

[0016] This utility model features a tube-pulling locking mechanism, which forms an innovative locking system through components such as a locking tube, locking rod, embedding groove, and embedding plate. The rotation of the locking ring drives the push-pull rod to control the embedding plate to extend into or move away from the embedding groove on the side wall of the locking rod, forming a mechanical lock that provides strong fixing force while maintaining the convenience of quick assembly and disassembly. This solves the core problem of poor stable installation of easily disassembled liquid-pulling tubes in traditional devices.

[0017] This utility model is equipped with a locking auxiliary mechanism. The locking auxiliary mechanism adopts a precise combination of a driving plate, a limiting ring, a positioning ring and a spring-loaded pin to construct a multi-level stabilization system. The design of the spring-loaded pin gradually pushing towards the bottom of the positioning ring ensures the stability and controllability of the rotation process of the locking ring, forming a solid third-level lock, which further improves the stability of the position of the liquid extraction tube during the sampling process. It is particularly suitable for accurate sampling work in complex environments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0019] Figure 2 This is a schematic diagram of the linear pumping mechanism in this utility model;

[0020] Figure 3 These are schematic diagrams of the linear pumping mechanism from different perspectives in this utility model.

[0021] Figure 4 This is a schematic diagram of the tube-pulling and clamping mechanism and the clamping auxiliary mechanism in this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the tube-pulling and clamping mechanism and the clamping auxiliary mechanism in this utility model.

[0023] In the diagram: 1. Frame; 2. Linear actuator; 3. Push-pull block; 4. Piston rod; 5. Liquid extraction tube; 6. Pressure block; 7. Snap-fit ​​tube; 8. Snap-fit ​​rod; 9. Embedded groove; 10. Embedded plate; 11. Embedded rotation ring; 12. Push-pull rod; 13. Drive plate; 14. Rotation limiting ring; 15. Positioning ring; 16. Fitting ring; 17. Spring pin; 18. Support plate; 19. Connecting plate; 20. Pressure plate; 21. Restricting arc groove; 22. Guide block; 23. Handle. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] Please see Figures 1-5 A wastewater sampling device for environmental monitoring includes a frame 1, a linear pumping mechanism, a pipe clamping mechanism, and a clamping auxiliary mechanism. The linear pumping mechanism includes a linear actuator 2, a push-pull block 3, a piston rod 4, a suction pipe 5, and a pressure block 6. The linear actuator 2 is mounted on the side of the frame 1, the push-pull block 3 is mounted on one end of the linear actuator 2, and one end of the piston rod 4 is detachably connected to the push-pull block 3. The suction pipe 5 is disposed within the frame 1, and the piston rod 4 is movably mounted within the suction pipe 5. The pressure block 6 presses against one end of the suction pipe 5. The end of the tube clamping mechanism includes a clamping tube 7, a clamping rod 8, an embedding groove 9, an embedding plate 10, an embedding rotating ring 11, and a push-pull rod 12. The clamping rod 8 can extend into the clamping tube 7. The embedding groove 9 is set on the side wall of the clamping rod 8. The embedding plate 10 and the embedding rotating ring 11 are respectively limited and rotatably installed in the side wall of the clamping tube 7. The two ends of the push-pull rod 12 are rotatably connected to the embedding rotating ring 11 and the embedding plate 10. The rotation of the embedding rotating ring 11 causes the push-pull rod 12 to pull or push the embedding plate 10, and the embedding plate 10 can extend into or away from the embedding groove 9.

[0028] In this embodiment, the linear pumping mechanism operates on the principle of piston suction. First, the linear pusher 2 drives the push-pull block 3 to reciprocate. The push-pull block 3 drives the piston rod 4 connected to it to slide inside the suction tube 5. When the piston rod 4 is pulled outward, a negative pressure is formed inside the suction tube 5, causing sewage to be sucked into the tube. When the piston rod 4 is pushed inward, the sewage is forced out of the tube opening to complete the sampling. The whole process is similar to the suction principle of a syringe, realizing accurate and controllable sewage sampling. The suction tube clamping mechanism is used to fix the position of the suction tube 5. During operation, the clamping rod 8 is inserted into the clamping tube 7 to initially fix the position of the suction tube 5. Then, by rotating the locking ring 11, the locking ring 11 drives the push-pull rod 12. The push-pull rod 12 pushes the embedding plate 10 into the embedding groove 9 on the side wall of the clamping rod 8 to form a mechanical lock, ensuring that the position of the suction tube 5 is stable during the sampling process and will not be displaced due to vibration or external force, thus ensuring the accuracy of sampling.

[0029] The locking auxiliary mechanism includes a drive plate 13, a rotation limiting ring 14, a positioning ring 15, a mating ring 16, and spring-loaded pins 17. The drive plate 13 is installed on the outer end of the locking ring 11 and is connected to the rotation limiting ring 14. The rotation limiting ring 14 is installed on the outer wall of the locking tube 7 to limit rotation. The positioning ring 15 is installed on the bottom end of the rotation limiting ring 14. The mating ring 16 is fixedly installed on the bottom end of the side wall of the locking tube 7. Multiple sets of spring-loaded pins 17 are arranged in a ring around the mating ring 16. One end of the spring-loaded pin 17 pushes towards the bottom end of the positioning ring 15 step by step, so that the positioning ring 15 and the rotation limiting ring 14 rotate stably, and the drive plate 13 stably drives the locking ring 11 to rotate.

[0030] In this embodiment, the locking auxiliary mechanism further enhances the reliability of the locking. The operator drives the plate 13 to rotate the interlocking ring 11, which in turn connects the plate 13 to the limiting ring 14, causing the limiting ring 14 to rotate together. The positioning ring 15 at the bottom of the limiting ring 14 rotates accordingly. The bottom of the positioning ring 15 contacts the multiple sets of spring-loaded pins 17 on the mating ring 16 in stages. The spring-loaded pins 17 provide elastic support to the positioning ring 15, making the rotation process of the limiting ring 14 and the interlocking ring 11 more stable and controllable, forming a multi-level positioning lock, which further enhances the locking effect.

[0031] Please see Figures 1-5As a supplementary embodiment of a wastewater sampling device for environmental monitoring, which includes a linear pumping mechanism, a pipe clamping mechanism, and a clamping auxiliary mechanism: A support plate 18 is installed on the side of the frame 1, and a clamping pipe 7 is fixedly installed on the support plate 18. A connecting plate 19 is installed at the bottom end of the side wall of the clamping pipe 7, and the connecting plate 19 is fixedly installed at the bottom end of the support plate 18. A clamping rod 8 is fixedly connected to a pressure block 6, and the clamping rod 8 can pass through the support plate 18 and engage with the clamping pipe 7. A pressure plate 20 is installed on the side of one end of the pumping pipe 5, and the pressure block 6 can press against the pressure plate 20 to fix the pumping pipe 5 inside the frame 1. A limiting arc groove 21 is opened on the rotatable ring 11. A guide block 22 is fixedly installed inside the side wall of the clamping pipe 7, and the guide block 22 is limited to rotate within the limiting arc groove 21. A handle 23 is installed on the side of the frame 1.

[0032] More specifically, the suction tube 5 is placed inside the frame 1, positioning the pressure plate 20 at one end. The locking rod 8 passes through the support plate 18 and engages with the locking tube 7. The other end of the locking rod 8 is connected to the pressure block 6. The pressure block 6 presses against the pressure plate 20 of the suction tube 5, initially fixing the position of the suction tube 5. Rotating the plate 13 causes the locking ring 11 to rotate. The locking ring 11 pushes the embedding plate 10 into the embedding groove 9 on the side wall of the locking rod 8 via the push-pull rod 12, forming the first-level locking. At the same time, the limiting ring 14 and the positioning ring 15 rotate accordingly. The positioning ring 15 and the locking ring 15... The spring pin 17 contacts in stages to form a multi-stage stable lock. The guide block 22 is limited to rotate within the limiting arc groove 21 of the embedded rotating ring 11 to prevent excessive rotation. The linear pusher 2 is activated to drive the push-pull block 3 to move. The push-pull block 3 drives the piston rod 4 to reciprocate in the liquid extraction tube 5. When pulled outward, a negative pressure is generated in the liquid extraction tube 5, and sewage is sucked into the tube. When pushed inward, the sewage sample can be squeezed out into the collection container. The reverse operation of the locking auxiliary mechanism and the extraction tube locking mechanism releases the lock, and the liquid extraction tube 5 and the sample are taken out, completing one sampling process.

[0033] In summary, when the overall equipment is in use or running: When the linear pumping mechanism is required, it works on the principle of piston suction. First, the linear pusher 2 drives the push-pull block 3 to reciprocate. The push-pull block 3 drives the piston rod 4 connected to it to slide inside the suction pipe 5. When the piston rod 4 is pulled outward, a negative pressure is formed inside the suction pipe 5, causing sewage to be sucked into the pipe. When the piston rod 4 is pushed inward, the sewage is forced out of the pipe opening to complete the sampling. The whole process is similar to the suction principle of a syringe, realizing accurate and controllable sewage sampling.

[0034] When the tube clamping mechanism is in operation, it is used to fix the position of the suction tube 5. During operation, the clamping rod 8 is inserted into the clamping tube 7 to initially fix the position of the suction tube 5. Then, by rotating the locking ring 11, the locking ring 11 drives the push-pull rod 12. The push-pull rod 12 pushes the embedding plate 10 into the embedding groove 9 on the side wall of the clamping rod 8 to form a mechanical lock, ensuring that the position of the suction tube 5 is stable during the sampling process and will not be displaced due to vibration or external force, thus ensuring the accuracy of sampling.

[0035] When the locking auxiliary mechanism is in operation, it further enhances the reliability of locking. The operator drives the plate 13 to rotate the interlocking ring 11, which in turn connects the plate 13 to the limiting ring 14, causing the limiting ring 14 to rotate together. The positioning ring 15 at the bottom of the limiting ring 14 rotates accordingly. The bottom of the positioning ring 15 contacts the multiple sets of spring-loaded pins 17 on the mating ring 16 in stages. The spring-loaded pins 17 provide elastic support to the positioning ring 15, making the rotation process of the limiting ring 14 and the interlocking ring 11 more stable and controllable, forming a multi-level positioning lock, which further enhances the locking effect.

[0036] Place the suction tube 5 inside the frame 1, positioning the pressure plate 20 at one end. Insert the locking rod 8 through the support plate 18 and engage it with the locking tube 7. Connect the other end of the locking rod 8 to the pressure block 6. The pressure block 6 presses against the pressure plate 20 of the suction tube 5, initially fixing the position of the suction tube 5. Rotate the drive plate 13, causing the locking ring 11 to rotate. The locking ring 11, through the push-pull rod 12, pushes the embedding plate 10 into the embedding groove 9 on the side wall of the locking rod 8, forming the first level of locking. Simultaneously, the limiting ring 14 and the positioning ring 15 rotate accordingly. The positioning ring 15 engages with the spring top. Pin 17 contacts in stages to form a multi-stage stable lock. The guide block 22 is limited to rotate within the limiting arc groove 21 of the embedded rotating ring 11 to prevent excessive rotation. The linear actuator 2 is activated to drive the push-pull block 3 to move. The push-pull block 3 drives the piston rod 4 to reciprocate within the suction tube 5. When pulled outward, a negative pressure is generated within the suction tube 5, and sewage is sucked into the tube. When pushed inward, the sewage sample can be squeezed out into the collection container. The reverse operation of the locking auxiliary mechanism and the suction tube locking mechanism releases the lock, and the suction tube 5 and sample are taken out, completing one sampling process.

[0037] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wastewater sampling device for environmental monitoring, comprising a frame (1), a linear pumping mechanism, a pumping pipe clamping mechanism, and a clamping auxiliary mechanism, characterized in that: The linear pumping mechanism includes a linear actuator (2), a push-pull block (3), a piston rod (4), a pumping tube (5), and a pressure block (6). The linear actuator (2) is mounted on the side of the frame (1), the push-pull block (3) is mounted on one end of the linear actuator (2), one end of the piston rod (4) is detachably connected to the push-pull block (3), the pumping tube (5) is located inside the frame (1), the piston rod (4) is movably mounted inside the pumping tube (5), and the pressure block (6) presses against one end of the pumping tube (5). The pumping tube clamping mechanism includes a clamping tube (7) and a clamping rod (8). The device includes an embedded groove (9), an embedded plate (10), a rotating ring (11), and a push-pull rod (12). The snap-fit ​​rod (8) can extend into the snap-fit ​​tube (7). The embedded groove (9) is set on the side wall of the snap-fit ​​rod (8). The embedded plate (10) and the rotating ring (11) are respectively limited and rotated in the side wall of the snap-fit ​​tube (7). The two ends of the push-pull rod (12) are rotatably connected to the rotating ring (11) and the embedded plate (10). The rotation of the rotating ring (11) causes the push-pull rod (12) to pull or push the embedded plate (10). The embedded plate (10) can extend into or away from the embedded groove (9).

2. The wastewater sampling device for environmental monitoring according to claim 1, characterized in that: The locking auxiliary mechanism includes a driving plate (13), a rotation limiting ring (14), a positioning ring (15), a mating ring (16), and a spring-loaded pin (17). The driving plate (13) is installed on the outer end of the locking ring (11) and is connected to the rotation limiting ring (14). The rotation limiting ring (14) is installed on the outer wall of the locking tube (7) to limit rotation. The positioning ring (15) is installed at the bottom end of the rotation limiting ring (14). The mating ring (16) is fixedly installed at the bottom end of the side wall of the locking tube (7). Multiple sets of spring-loaded pins (17) are arranged in a ring on the mating ring (16). One end of the spring-loaded pin (17) pushes towards the bottom end of the positioning ring (15) step by step.

3. The wastewater sampling device for environmental monitoring according to claim 1, characterized in that: The frame (1) is provided with a support plate (18) on its side, and the clamping pipe (7) is fixedly installed on the support plate (18).

4. The wastewater sampling device for environmental monitoring according to claim 3, characterized in that: A connecting plate (19) is installed at the bottom end of the side wall of the card tube (7), and the connecting plate (19) is fixedly installed at the bottom end of the support plate (18).

5. The wastewater sampling device for environmental monitoring according to claim 3, characterized in that: The locking rod (8) is fixedly connected to the pressure block (6), and the locking rod (8) can pass through the support plate (18) and engage with the locking tube (7).

6. The wastewater sampling device for environmental monitoring according to claim 1, characterized in that: A pressure plate (20) is installed on one side of the liquid extraction tube (5), and the pressure block (6) can press against the pressure plate (20) to fix the liquid extraction tube (5) in the frame (1).

7. The wastewater sampling device for environmental monitoring according to claim 1, characterized in that: The embedded ring (11) is provided with a limiting arc groove (21), and a guide block (22) is fixedly installed in the side wall of the clamping pipe (7), and the guide block (22) is limited to rotate within the limiting arc groove (21).

8. The wastewater sampling device for environmental monitoring according to claim 1, characterized in that: The frame (1) is provided with a handle (23) on its side.

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