Ultra-light high-precision portable water level measuring instrument for ultra-low water level

Abstract

The ultra-light high-precision portable water level measuring instrument for the ultra-low water level comprises an outer shell, a wire return motor is fixedly installed in the outer shell, a wire shaft is fixedly installed at the output end of the wire return motor, and a testing wire is fixedly connected to the outer side of the wire shaft; by adopting advanced light-weight materials and compact design, the weight and the size of the instrument are greatly reduced, so that geological and water environment workers can easily carry the instrument in field operation, the working efficiency is improved, and the physical output is reduced. Meanwhile, the instrument has an automatic take-up function, the operation process is simplified, and the labor intensity is reduced. Besides, the instrument has excellent anti-interference performance, can stably work in a seriously polluted groundwater environment, and provides an accurate measurement result. By optimizing the probe design and the measurement algorithm, the instrument can realize higher measurement precision, and the accuracy of data can be ensured even under the condition of deeper water level.

Description

Technical Field

[0001] The present invention relates to the technical field of water level measurement, and specifically to an ultra-light, high-precision and portable water level measuring instrument for ultra-low water levels. Background Technique

[0002] In professional fields such as water conservancy projects, hydrogeography, and hydrological surveys, water level measuring instruments, as key tools, can not only accurately infer the underground water flow field, but also play a huge role in aspects such as groundwater level monitoring and detection of the seepage line of dam bodies in hydropower projects.

[0003] However, the traditional water level measuring instruments on the market currently have the following problems: excessive weight and volume, which not only reduce work efficiency but also easily cause operating errors by staff in a fatigued state; insufficient automation. Currently, the water level measuring instruments on the market need to manually wind the wire during the wire retraction process, and this storage method is extremely time-consuming and laborious. When measuring water levels at particularly deep depths, operators need to spend a lot of time winding the cable one by one. When there are many groundwater observation wells and low water levels, it will consume a large amount of time and energy. Moreover, during the entire storage process, the operator must guide the cable throughout to ensure that the coil is collected neatly. If there is a slight mistake, it may cause the cable to become entangled or the coil to be uneven. Summary of the Invention

[0004] The purpose of the present invention is to provide an ultra-light, high-precision and portable water level measuring instrument for ultra-low water levels to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An ultra-light, high-precision and portable water level measuring instrument for ultra-low water levels, including an outer housing. Inside the outer housing, a wire retraction motor is fixedly installed. The output end of the wire retraction motor is fixedly installed with a spool. The outside of the spool is fixedly connected with a test wire. At the end of the test wire far from the spool, two detection needles are fixedly installed. Outside the end of the test wire far from the spool, an outer filter housing is fixedly installed. At the bottom of the outer filter housing, a hanging hook is fixedly installed. Inside the outer housing, a wire recovery assembly is installed. On one side of the bottom of the inner cavity of the outer housing, a placement groove plate two is fixedly installed. On the other side of the bottom of the inner cavity of the outer housing, a placement groove plate one is fixedly installed. Inside the placement groove plate one and the placement groove plate two, pendants are installed. At the top of each pendant, a hanging ring is fixedly installed. An outlet hole is opened at the bottom of the outer housing. At the bottom of the inner cavity of the outer housing, a wire-laying metering module is installed.

[0006] Preferably, a top cover is sleeved on the top of the outer housing. On the top of the top cover, a circuit board is fixedly installed. On the top of the top cover, a storage battery is fixedly installed. On the top of the top cover, a display screen is fixedly installed. On the top of the top cover, a control panel is installed.

[0007] Preferably, handle receiving grooves are provided on both sides of the outer casing, telescopic handles are hingedly installed inside the handle receiving grooves, and external threaded holes are provided on all four sides of the outer casing.

[0008] Preferably, the wire recycling assembly includes a U-shaped tube and a driving track. A wire hole sliding bead is movably installed inside the U-shaped tube. A plugging groove is provided inside the wire hole sliding bead. A moving plug is snap-fitted and installed inside the plugging groove. A wire ring is fixedly installed on the top of the moving plug. A plurality of rolling balls are movably installed inside the U-shaped tube. Track sliding grooves are provided at the bottoms of both ends of the U-shaped tube. A moving sliding groove is provided at the top of one end of the U-shaped tube. A driving roller is sleeved and installed on one side of the inner cavity of the driving track. A driven roller is sleeved and installed on the other side of the inner cavity of the driving track. Two support rollers are installed inside the driving track. Support rods are fixedly installed on both sides of the U-shaped tube. Two outer sleeves are fixedly installed on the outer side of the driving track. A return spring is installed inside each of the two outer sleeves. Inner moving blocks are movably installed inside the two outer sleeves. Track sliders are fixedly installed on one side of each of the inner moving blocks.

[0009] Preferably, both ends of the two support rollers are respectively connected to the inner sides of the support rods. Support plates are fixedly installed on the opposite sides of the support rods. Both ends of the driving roller and the driven roller are rotatably connected to one side of the support plates. A power motor is fixedly installed on one side of the support plates. The output end of the power motor is fixedly connected to one end of the driving roller. The bottom of the support rod is fixedly connected to the bottom of the inner cavity of the outer casing.

[0010] Preferably, the moving plug is slidably installed inside the moving sliding groove. The test wire is located inside the wire ring. The central axes of the two track sliders and the central axes of the two track sliding grooves are in the same vertical plane respectively.

[0011] Preferably, the offline metering module includes a metering motor and a mounting vertical plate. A rotating block is fixedly installed at the output end of the metering motor. A telescopic spring is fixedly installed on one side of the mounting vertical plate. A magnetic telescopic plate is fixedly installed at the end of the telescopic spring away from the mounting vertical plate. The magnetic telescopic plate and the rotating block are respectively located on both sides of the wire outlet hole. The metering motor and the mounting vertical plate are both fixedly installed at the bottom of the inner cavity of the outer casing.

[0012] Preferably, a wire magnetic ring is fixedly installed on the outer side of the test wire. The outer filter housing is located outside the two detection needles. Circular sleeve plates are sleeved on the outer sides of the two detection needles. Four anti-interference columns are fixedly installed at the bottoms of the circular sleeve plates.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: By adopting advanced lightweight materials and a compact design, the instrument will significantly reduce its weight and volume, enabling geological and water environment workers to easily carry it out in field operations, improving work efficiency and reducing physical exertion. At the same time, the instrument will be equipped with an automatic wire winding function, simplifying the operation process and reducing labor intensity. In addition, the instrument will have excellent anti-interference performance and can work stably in a severely polluted groundwater environment, providing accurate measurement results. By optimizing the probe design and measurement algorithm, the instrument will achieve higher measurement accuracy and ensure data accuracy even under deeper water level conditions;

[0014] Through the creative innovation of the overall structure, the present invention has greatly reduced the volume and weight of the water level detector. In the process of calculating the water level depth by the motor rotation speed, a lightweight design has been achieved. At the same time, it has universality for various situations. Through the new design of the wire winding and unwinding process, the automation process of groundwater level measurement has been realized, greatly reducing the manpower and time in actual exploration work, reducing the work intensity of workers, and greatly improving the exploration work efficiency.

[0015] Through the new anti-interference design of the probe probe of the present invention, by adding an anti-interference front fork, it is possible to ensure accurate water level measurement in the face of a harsh groundwater environment. And through the three-layer protection design, the fault tolerance and accuracy have been greatly increased. At the same time, it avoids the waste of time and energy of the staff and reduces the work burden of the staff. By adding a display, etc., while facilitating the staff to read the data, it can automatically record the point position data and relevant groundwater level data, greatly simplifying the work burden of outdoor work and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional external structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the bottom three-dimensional structure of the present invention.

[0018] Figure 3 It is a schematic diagram of the internal structure of the outer shell of the present invention.

[0019] Figure 4 It is a schematic diagram of the sectional structure of the outer shell of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the wire recovery component of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the U-shaped tube of the present invention.

[0022] Figure 7 It is a schematic diagram of the partial disassembled three-dimensional structure of the present invention.

[0023] Figure 8 This is a schematic diagram of the partial external structure of the present invention.

[0024] In the figure: 1. Outer shell; 2. Top cover; 3. Control panel; 4. Circuit board; 5. Display screen; 6. Battery; 7. Handle storage groove; 8. Telescopic handle; 9. Outer filter shell; 10. Hanging hook; 11. Hanging ring; 12. Pendant; 13. Wire outlet hole; 14. Wire magnetic ring; 15. U-shaped tube; 16. Support rod; 17. Moving chute; 18. Rolling ball; 19. Test wire; 20. Wire loop; 21. Spool; 22. Wire retracting motor; 23. Driving track; 24. Metering motor; 25. Rotating block; 26. Magnetostrictive plate; 27. Telescopic spring; 28. Installation vertical plate; 29. First placement groove plate; 30. Second placement groove plate; 31. Support frame plate; 32. Power motor; 33. Driving roller; 34. Support roller; 35. Driven roller; 36. Moving insertion block; 37. Track chute; 38. Outer sleeve; 39. Track slider; 40. Wire hole sliding bead; 41. Insertion slot; 42. Return spring; 43. Inner moving block; 44. Circular sleeve plate; 45. Anti-interference column; 46. Detection probe; 47. External threaded hole. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1 - 8, the present invention provides a technical solution: an ultra-light and high-precision portable water level measuring instrument for ultra-low water levels, including an outer housing 1. Inside the outer housing 1, a return wire motor 22 is fixedly installed. At the output end of the return wire motor 22, a wire spool 21 is fixedly installed. On the outer side of the wire spool 21, a test wire 19 is fixedly connected. At one end of the test wire 19 away from the wire spool 21, two detection needles 46 are fixedly installed. On the outer side of the end of the test wire 19 away from the wire spool 21, an outer filter housing 9 is fixedly installed. At the bottom of the outer filter housing 9, a hanging hook 10 is fixedly installed. Inside the outer housing 1, a wire recycling component is installed. On one side of the bottom cavity of the outer housing 1, a placement groove plate two 30 is fixedly installed. On the other side of the bottom cavity of the outer housing 1, a placement groove plate one 29 is fixedly installed. Inside both the placement groove plate one 29 and the placement groove plate two 30, pendants 12 are installed. At the top of each pendant 12, a hanging ring 11 is fixedly installed. At the bottom of the outer housing 1, a wire outlet hole 13 is opened. Inside the wire outlet hole 13, a magnetic switch is fixedly installed. At the bottom of the inner cavity of the outer housing 1, a wire-lowering metering module is installed. At the top of the outer housing 1, a top cover 2 is sleeved and installed. On the top of the top cover 2, a circuit board 4 is fixedly installed. On the top of the top cover 2, a storage battery 6 is fixedly installed. On the top of the top cover 2, a display screen 5 is fixedly installed. On the top of the top cover 2, a control panel 3 is installed. The wire-lowering metering module includes a metering motor 24 and an installation vertical plate 28. At the output end of the metering motor 24, a rotating block 25 is fixedly installed. On one side of the installation vertical plate 28, a telescopic spring 27 is fixedly installed. At the end of the telescopic spring 27 away from the installation vertical plate 28, a magnetic telescopic plate 26 is fixedly installed. The magnetic telescopic plate 26 and the rotating block 25 are respectively located on both sides of the wire outlet hole 13. Both the metering motor 24 and the installation vertical plate 28 are fixedly installed at the bottom of the inner cavity of the outer housing 1. On both sides of the outer housing 1, handle storage grooves 7 are opened. Inside each handle storage groove 7, a telescopic handle 8 is hingedly installed. On the four sides of the outer housing 1, external threaded holes 47 are opened. On the outer side of the test wire 19, a wire magnetic ring 14 is fixedly installed. The outer filter housing 9 is located outside the two detection needles 46. On the outer sides of both detection needles 46, circular sleeve plates 44 are sleeved and installed. At the bottom of each circular sleeve plate 44, four anti-interference columns 45 are fixedly installed.

[0027] Working principle of the above technical solution: The operator selects a pendant 12 of appropriate size according to the actual on-site situation, then hangs and installs the hanging ring 11 at the top of the pendant 12 on the outside of the hanging hook 10, then installs the top cover 2 on the top of the outer housing 1, and completes the power connection. The operator turns on the machine through the control panel 3 on the top of the top cover 2. After the machine is turned on, in the circuit system, only the metering motor 24 and the magnetic telescopic plate 26 are in a conductive state. At this time, the magnetic telescopic plate 26 has extended towards the metering rotating block 25 under the action of magnetic force, reducing the distance between the two. The rest are in an open circuit state. The operator inputs relevant point information into the system through the control panel 3, and the system stores it. The wire magnetic ring 14 is located at the wire outlet hole 13. Due to the magnetic force, the magnetic switch is in a closed state, and the circuit system cannot supply power to the return wire motor 22 and the power motor 32. The operator can fix the device at the wellhead of the groundwater monitoring well by stretching the telescopic handles 8 on both sides according to the actual on-site situation. If the wellhead is large, the support can be realized by externally connecting a threaded rod through the external threaded hole 47. The operator performs a wire-laying operation through the control panel 3, and the device starts to lay wire. The metering motor 24 starts to rotate. Since both sides of the metering rotating block 25 are magnetic, when the magnetic telescopic plate 26 is powered on, the magnetic telescopic plate 26 moves towards the rotating block 25 by stretching, reducing the distance between the two and increasing the friction with the test wire 19. At the same time, since the return wire motor 22 is in an open circuit state, the test wire 19 wound around the spool 21 exits through the wire outlet hole 13 under the rotation of the metering motor 24 and the gravity of the pendant 12. During the wire-laying process, since this device is for groundwater levels at ultra-low water levels, that is, depths above 100 m, in the early stage of wire-laying, the rotation speed of the metering motor 24 is relatively fast. Taking 10 m / s as an example, after the circuit board 4 detects that 100 m of wire has been laid, the rotation speed of the metering motor 24 gradually slows down to 5 m / s. After 150 m of wire has been laid, the rotation speed of the metering motor 24 further slows down and finally drops to 3 m / s. When the detection needle 46 is immersed in water, the wire release stops, the detection is completed, and the depth of the groundwater is determined by the length of the wire released. After the operator clicks to confirm the wire retraction, the return wire motor 22 is powered on. After the return wire motor 22 is powered on, the spool 21 starts to rotate to retract the wire, and the wire returns through the wire outlet hole 13. As the wire retraction is gradually completed, when the wire is about to finish retracting, when the wire magnetic ring 14 approaches the wire outlet hole 13, due to the magnetic force, the magnetic switch is in a closed state again, and the circuit system cannot supply power to the return wire motor 22 and the power motor 32. At this time, the device cannot perform the wire retraction operation anymore. At the same time, the metering motor 24 and the magnetic telescopic plate 26 are in an open circuit state. At this time, the process of automatically ending the wire retraction is completed, and all measurement processes at this point are completed. Only the display screen 5 is in a conductive state and displays all information.

[0028] In another embodiment, as Figures 1 - 8As shown, the wire recovery assembly includes a U-shaped tube 15 and a transmission track 23. A wire hole sliding bead 40 is movably installed inside the U-shaped tube 15. An insertion slot 41 is opened inside the wire hole sliding bead 40. A movable insertion block 36 is snap-fitted and installed inside the insertion slot 41. A wire ring 20 is fixedly installed at the top of the movable insertion block 36. A plurality of rolling beads 18 are movably installed inside the U-shaped tube 15. Track sliding grooves 37 are opened at the bottoms of both ends of the U-shaped tube 15. A movable sliding groove 17 is opened at the top of one end of the U-shaped tube 15. A driving roller 33 is sleeved and installed on one side of the inner cavity of the transmission track 23. A driven roller 35 is sleeved and installed on the other side of the inner cavity of the transmission track 23. Two support rollers 34 are installed inside the transmission track 23. Support rods 16 are fixedly installed on both sides of the U-shaped tube 15. Two outer sleeves 38 are fixedly installed on the outer side of the transmission track 23. A return spring 42 is installed inside each of the two outer sleeves 38. An inner moving block 43 is movably installed inside each of the two outer sleeves 38. A track slider 39 is fixedly installed on one side of each of the inner moving blocks 43. The two ends of each of the two support rollers 34 are respectively connected to the inner sides of the support rods 16. Support frame plates 31 are fixedly installed on the opposite sides of the support rods 16. The two ends of the driving roller 33 and the driven roller 35 are respectively rotatably connected to one side of the support frame plate 31. A power motor 32 is fixedly installed on one side of the support frame plate 31. The output end of the power motor 32 is fixedly connected to one end of the driving roller 33. The bottom of the support rod 16 is fixedly connected to the bottom of the inner cavity of the outer shell 1. The movable insertion block 36 is slidably installed inside the inner side of the movable sliding groove 17. The test wire 19 is located inside the wire ring 20. The central axes of the two track sliders 39 and the central axes of the two track sliding grooves 37 are in the same vertical plane respectively.

[0029] After the power motor 32 is energized, it drives the driving roller 33 to rotate. The rotation of the driving roller 33 drives the transmission track 23 to transmit, thereby driving the outer sleeve 38 to move. The inner moving block 43 drives the track slider 39 to move. The two outer sleeves 38 and the track sliders 39 are arranged at the upper and lower ends of the transmission track 23 respectively. At the same time, the left rear distance is set according to the position spacing of the two track chutes 37 at the bottom of the U-shaped tube 15. When the transmission track 23 rotates, it drives the two track sliders 39 to move. When the track slider 39 moves into the inner part of one track chute 37 at the bottom of the U-shaped tube 15, the hemispherical contact surface at the top of the track slider 39 can just be tangent to the surface of the wire hole bead 40 inside the U-shaped tube 15, which is equivalent to two circles just being tangent. The horizontal force generated by the contact between the hemispherical contact surface of the track slider 39 and the wire hole bead 40 pushes the wire hole bead 40 and the rolling bead 18 inside the U-shaped tube 15 to move horizontally. The vertical force generated will compress the return spring 42 through the inner moving block 43, so that this process can keep the wire hole bead 40 and the rolling bead 18 inside the U-shaped tube 15 moving horizontally, and will not cause the track slider 39 to slide into the outer sleeve 38 due to too large a vertical force. As the transmission track 23 rotates, the hemispherical contact surface at the top of the track slider 39 pushes the wire hole bead 40 to the other end of the moving chute 17. At this time, due to the limitation of the moving chute 17, the wire hole bead 40 cannot move further, which will cause the force received by the top of the track slider 39 to increase instantaneously. In this process, the return spring 42 and the inner moving block 43 will also be gradually compressed, so that the moving distance of the hemispherical contact surface at the top of the track slider 39 in the vertical direction just disengages from the track chute 37 at the bottom of the U-shaped tube 15, and will continue to slide with the transmission track 23. At this time, the other outer sleeve 38 will carry the track slider 39 at the top and just contact the rolling bead 18 on the other side of the U-shaped tube 15. The track slider 39 will push the rolling bead 18 to move inside the U-shaped tube 15, thereby pushing the wire hole bead 40 to carry the moving plug 36 and the wire ring 20 to move to the other side of the moving chute 17 for resetting, so that the wire ring 20 makes a reciprocating motion, making the wire spool rewind more evenly.

[0030] Working principle: The operator selects a pendant 12 of appropriate size according to the actual on-site situation, then hangs and installs the hanging ring 11 at the top of the pendant 12 on the outside of the hanging hook 10, then installs the top cover 2 on the top of the outer housing 1, and completes the power connection. The operator turns on the machine through the control panel 3 at the top of the top cover 2. After starting up, in the circuit system, only the metering motor 24 and the magnetic telescopic plate 26 are in a conductive state. At this time, the magnetic telescopic plate 26 has extended towards the metering rotating block 25 under the action of magnetic force, reducing the distance between the two. The rest are in an open circuit state. The operator inputs relevant point information into the system through the control panel 3, and the system stores it. The wire magnetic ring 14 is located at the wire outlet hole 13. Due to the magnetic force, the magnetic switch is in a closed state, and the circuit system cannot supply power to the return wire motor 22 and the power motor 32. The operator can fix the device at the wellhead of the groundwater monitoring well by stretching the telescopic handles 8 on both sides according to the actual on-site situation. The operator performs a wire-laying operation through the control panel 3, and the device starts to lay wire. The metering motor 24 starts to rotate. Since both sides of the metering rotating block 25 are magnetic, when the magnetic telescopic plate 26 is energized, the magnetic telescopic plate 26 moves towards the rotating block 25 by extending, reducing the distance between the two and increasing the friction with the test wire 19. At the same time, since the return wire motor 22 is in an open circuit state, the test wire 19 wound around the spool 21 is led out through the wire outlet hole 13 under the rotation of the metering motor 24 and the gravity of the pendant 12. During the wire-laying process, since this device is for measuring the groundwater level at an ultra-low water level, that is, at a depth of more than 100m, so in the early stage of wire-laying, the rotation speed of the metering motor 24 is relatively fast. Taking 10m / s as an example, after the circuit board 4 detects that 100m of wire has been laid, the rotation speed of the metering motor 24 gradually slows down to 5m / s. After laying 150m of wire, the rotation speed of the metering motor 24 further slows down and finally drops to 3m / s. When the detection needle 46 is immersed in water, the wire release stops, the detection is completed, and the depth of the groundwater is determined by the length of the wire released. After the operator clicks to confirm the wire retraction, the return wire motor 22 is energized. After the return wire motor 22 is energized, the spool 21 starts to rotate to retract the wire, and the wire returns through the wire outlet hole 13. As the wire retraction is gradually completed, when the wire is about to complete the retraction, when the wire magnetic ring 14 approaches the wire outlet hole 13, due to the magnetic force, the magnetic switch is in a closed state again, and the circuit system cannot supply power to the return wire motor 22 and the power motor 32. At this time, the device cannot perform the wire retraction operation anymore. At the same time, the metering motor 24 and the magnetic telescopic plate 26 are in an open circuit state. At this time, the process of automatically ending the wire retraction is completed, and all the measurement processes at this point are completed. Only the display screen 5 is in a conductive state, showing all the information. After the power motor 32 is energized, it drives the driving roller 33 to rotate. The rotation of the driving roller 33 drives the transmission track 23 to drive, thereby driving the outer sleeve 38 to move, and driving the track slider 39 to move through the inner moving block 43. The two outer sleeves 38 and the track sliders 39 are respectively arranged at the upper and lower ends of the transmission track 23.Meanwhile, set the left rear spacing according to the position spacing of the two crawler chutes 37 at the bottom of the U-shaped tube 15. When the driving crawler 23 rotates, it drives the two crawler sliders 39 to move. When the crawler slider 39 moves into the inner side of one of the crawler chutes 37 at the bottom of the U-shaped tube 15, the hemispherical contact surface at the top of the crawler slider 39 can just be tangent to the surface of the wire hole bead 40 inside the U-shaped tube 15, which is equivalent to two circles just being tangent. The horizontal force generated by the contact between the hemispherical contact surface of the crawler slider 39 and the wire hole bead 40 pushes the wire hole bead 40 and the rolling ball 18 inside the U-shaped tube 15 to move horizontally. The vertical force generated will compress the return spring 42 through the inner moving block 43, so that in this process, the wire hole bead 40 and the rolling ball 18 inside the U-shaped tube 15 can move horizontally, and the crawler slider 39 will not slide into the outer sleeve 38 due to too large a vertical force. As the driving crawler 23 rotates, the hemispherical contact surface at the top of the crawler slider 39 pushes the wire hole bead 40 to the other end of the moving chute 17. At this time, due to the limitation of the moving chute 17, the wire hole bead 40 cannot move further, which will cause the force received by the top of the crawler slider 39 to increase instantaneously. In this process, the return spring 42 and the inner moving block 43 will also be gradually compressed, so that the moving distance of the hemispherical contact surface at the top of the crawler slider 39 in the vertical direction just disengages from the crawler chute 37 at the bottom of the U-shaped tube 15, and it will continue to slide with the driving crawler 23. At this time, the other outer sleeve 38 will carry the crawler slider 39 at the top and just contact the rolling ball 18 on the other side of the U-shaped tube 15. The crawler slider 39 will push the rolling ball 18 to move inside the U-shaped tube 15, thereby pushing the wire hole bead 40 to carry the moving insert block 36 and the wire ring 20 to move to the other side of the moving chute 17 for resetting, so that the wire ring 20 makes a reciprocating motion, making the rewinding of the spool more uniform.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultra-light and high-precision portable water level measuring instrument for ultra-low water level, comprising an outer shell (1), characterized in that: A loop motor (22) is fixedly installed inside the outer shell (1), a bobbin (21) is fixedly installed at the output end of the loop motor (22), a test wire (19) is fixedly connected to the outside of the bobbin (21), two detection needles (46) are fixedly installed at one end of the test wire (19) away from the bobbin (21), an outer filter shell (9) is fixedly installed at the outside of one end of the test wire (19) away from the bobbin (21), a hanging hook (10) is fixedly installed at the bottom of the outer filter shell (9), and the outer shell (1) is fixedly installed with a loop motor (22) inside the outer shell (1), and a bobbin (21) is fixedly installed at the output end of the bobbin (21). ) is installed on the inner side of the outer shell (1), a second placement slot plate (30) is fixedly installed on one side of the bottom of the inner cavity of the outer shell (1), and a first placement slot plate (29) is fixedly installed on the other side of the bottom of the inner cavity of the outer shell (1), pendants (12) are installed inside the first placement slot plate (29) and the second placement slot plate (30), and a hanging ring (11) is fixedly installed on the top of the pendant (12), a wire outlet hole (13) is opened at the bottom of the outer shell (1), and a down-line metering module is installed at the bottom of the inner cavity of the outer shell (1).

2. The ultra-light and high-precision portable water level measuring instrument for ultra-low water level according to claim 1, characterized in that: A top cover (2) is sleeved and mounted on the top of the outer shell (1), a circuit board (4) is fixedly mounted on the top of the top cover (2), a storage battery (6) is fixedly mounted on the top of the top cover (2), a display screen (5) is fixedly mounted on the top of the top cover (2), and a control panel (3) is mounted on the top of the top cover (2).

3. The ultra-light and high-precision portable water level measuring instrument for ultra-low water level according to claim 2, characterized in that: Both sides of the outer shell (1) are provided with handle storage grooves (7), the interior of the handle storage grooves (7) is hingedly installed with telescopic handles (8), and the four sides of the outer shell (1) are provided with external threaded holes (47).

4. The ultra-light and high-precision portable water level measuring instrument for ultra-low water level according to claim 3, characterized in that: The wire recovery assembly comprises a U-shaped tube (15) and a transmission crawler (23); a wire hole sliding bead (40) is movably installed inside the U-shaped tube (15); a plug-in slot (41) is provided inside the wire hole sliding bead (40); a movable plug-in block (36) is clamped and installed inside the plug-in slot (41); a wire ring (20) is fixedly installed on the top of the movable plug-in block (36); a plurality of rolling balls (18) are movably installed inside the U-shaped tube (15); crawler sliding grooves (37) are provided at the bottom of both ends of the U-shaped tube (15); a movable sliding groove (17) is provided on the top of one end of the U-shaped tube (15); and the transmission crawler (23) is movably installed inside the U-shaped tube (15); A driving roller (33) is sleeved and installed on one side of the inner cavity of the belt (23), a driven roller (35) is sleeved and installed on the other side of the inner cavity of the transmission crawler (23), two supporting rollers (34) are installed inside the transmission crawler (23), support rods (16) are fixedly installed on both sides of the U-shaped tube (15), two outer sleeves (38) are fixedly installed on the outer side of the transmission crawler (23), return springs (42) are installed inside the two outer sleeves (38), inner moving blocks (43) are movably installed inside the two outer sleeves (38), and a crawler slider (39) is fixedly installed on one side of the inner moving block (43).

5. The ultra-light and high-precision portable water level measuring instrument for ultra-low water level according to claim 4, characterized in that: The two ends of the two support rollers (34) are respectively connected to the inner side of the support rod (16); a support frame plate (31) is fixedly installed on the opposite side of the support rod (16); the two ends of the active roller (33) and the driven roller (35) are rotatably connected to one side of the support frame plate (31); a power motor (32) is fixedly installed on one side of the support frame plate (31); the output end of the power motor (32) is fixedly connected to one end of the active roller (33); and the bottom of the support rod (16) is fixedly connected to the bottom of the inner cavity of the outer shell (1).

6. The ultra-light and high-precision portable water level measuring instrument for ultra-low water level according to claim 5, characterized in that: The movable plug block (36) is slidably mounted on the inner side of the movable slide groove (17), the test wire (19) is located on the inner side of the wire ring (20), and the central axes of the two crawler sliders (39) are respectively in the same vertical plane as the central axes of the two crawler slide grooves (37).

7. The ultra-light and high-precision portable water level measuring instrument for ultra-low water level according to claim 6, characterized in that: The offline metering module comprises a metering motor (24) and a mounting plate (28); a rotating block (25) is fixedly mounted on the output end of the metering motor (24); a telescopic spring (27) is fixedly mounted on one side of the mounting plate (28); a magnetic telescopic plate (26) is fixedly mounted on one end of the telescopic spring (27) away from the mounting plate (28); the magnetic telescopic plate (26) and the rotating block (25) are respectively located on two sides of the outlet hole (13); and the metering motor (24) and the mounting plate (28) are both fixedly mounted on the bottom of the inner cavity of the outer shell (1).

8. The ultra-light and high-precision portable water level measuring instrument for ultra-low water level according to claim 7, characterized in that: A wire magnetic ring (14) is fixedly installed on the outer side of the test wire (19), the outer filter housing (9) is located on the outer side of two detection needles (46), and a circular sleeve plate (44) is sleeved and installed on the outer side of the two detection needles (46), and four anti-interference columns (45) are fixedly installed on the bottom of the circular sleeve plate (44).

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