Geotechnical investigation water level measuring instrument
Through the combination of the external and internal filter cartridges and cone weight body structures, the problems of debris blockage and counterweight blocks in the underground environment are solved, and the stability and accuracy are improved, and the service life of the device is extended.
Patent Information
- Application Number
- CN202420053073.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-09
AI Technical Summary
The existing geotechnical surveying water level measurement devices are easily blocked or destroyed by soil, sand and gravel and other debris under complex underground environments, which affects the stability and accuracy of the measurement data, and the counterweight blocks are easily shedded and affects the straightening of the signal line.
Adopt a combined structure of the outer filter cartridge and the inner filter cartridge. Filter media and an injection sensor are installed in the outer filter cartridge to prevent debris from entering the inner filter cartridge. Use the weight body of the cone structure to fix the bottom of the inner filter cartridge to ensure that the signal line is straightened. , and prevent gravel from falling through a bobbin structure.
It effectively avoids blockage or damage to the water pipe, ensures the stability and accuracy of the measurement data, and improves the service life and safety of the water level measuring device.
Smart Images
Figure CN222166259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of survey equipment, in particular to a rock and soil survey water level measuring instrument. Background Art
[0002] Soil moisture, pH, structural composition, density, water level depth, etc. will have a certain impact on the safety of civil engineering buildings and people's lives. Therefore, geological survey is an important part of civil engineering.
[0003] At present, when surveying the water level of groundwater system, most of them first use a drilling device to drill to the location of the groundwater system, then set up a water level measuring device on the drilled hole, and then slowly lower the detection head with a water level sensor wound on the water level measuring device through a signal line into the hole until the water level sensor contacts the groundwater. The water level sensor sends an induction signal to the control end of the water level measuring device, which controls the alarm of the water level measuring device to alarm, indicating that the detection head has reached the location of the groundwater. The user can know the groundwater level by reading the scale value on the surface of the signal line, thereby completing the measurement of the groundwater level. Since there are often gravels falling on the wall of the drilled hole, the detection head of the water level sensor of the above-mentioned water level measuring device is exposed outside and is easily damaged by the falling gravels; and the underground situation is complicated, and sometimes there is a lot of soil, mud and sand, which is also easy to damage the exposed detection head, resulting in increased maintenance and replacement costs.
[0004] Patent application number 202220167099.4 provides a geotechnical survey water level measuring device, the structure of which is as follows: Figure 1 As shown, it includes: a filter cartridge with an opening at the top, a plurality of water-permeable holes are provided on the side walls and the bottom cover of the filter cartridge, the opening of the filter cartridge is coaxially threaded and sealed with a top cover, and a counterweight is connected to the bottom end face of the filter cartridge; the bottom end face of the top cover is provided with coaxial threaded holes and avoidance holes from bottom to top, a water diversion pipe is threadedly connected to the threaded hole, and a light emitter and a light receiver of a counter-radiation sensor are embedded on the inner wall of the avoidance hole; a buoy that can slide up and down is provided in the water diversion pipe, and a light-shielding column that can be inserted between the light emitter and the light receiver is provided on the top of the buoy, and the counter-radiation sensor is connected to the control end of the geotechnical exploration water level measuring device through a signal line. The geotechnical exploration water level measuring device with the above-mentioned application number 202220167099.4 also has the following problems in actual use:
[0005] 1. The underground environment is complex, and sometimes there will be mixed dirt, sand, strips and other debris. The existing patents have several water holes on the side wall and bottom cover of the filter cartridge, especially the water holes on the bottom cover. Sludge, sand, and strips will still enter the filter cartridge through the water holes (especially the water holes on the bottom cover). In serious cases, the water pipe will be blocked or damaged, and the stability of the measurement data cannot be guaranteed.
[0006] 2. The counterweight is connected to the bottom of the filter cartridge and is easy to fall off during use, which will affect the straightening of the signal line and further affect the measurement accuracy. Utility Model Content
[0007] The purpose of the utility model is to provide a geotechnical survey water level measuring instrument to solve the existing problems, which can prevent the water pipe from being blocked or damaged, thereby ensuring the stability of the measurement data and prolonging the service life of the water level measuring device.
[0008] The utility model provides a rock and soil survey water level measuring instrument, which comprises:
[0009] The top cover, filter cartridge, counterweight, water pipe, buoy, beam sensor and signal line are characterized by:
[0010] The filter cartridge comprises: an outer filter cartridge formed by connecting an upper cartridge and a lower cartridge, and an inner filter cartridge fixed inside the outer filter cartridge; a first water-permeable hole is opened on the side wall of the lower cartridge; the interior is filled with filter medium; the inner filter cartridge is a hollow cone structure, and a second water-permeable hole is opened on the cone surface;
[0011] The top of the outer filter cartridge is open, and a top cover is connected to the opening; a water diversion pipe is connected to the bottom end surface of the top cover, and a light emitter and a light receiver of a corresponding sensor are provided;
[0012] A buoy which can slide up and down is arranged in the water diversion pipe, a light shielding column which can be inserted between the light transmitter and the light receiver is arranged on the top of the buoy, and the corresponding radiation sensor is connected with the control end through a signal line.
[0013] Furthermore, the inner filter cartridge is a hollow cone structure with an opening at the bottom;
[0014] The rock and soil survey water level measuring instrument also includes a counterweight body, which is in an inverted cone structure. Its cone surface is matched and connected with the bottom opening of the inner filter cylinder by its own weight.
[0015] Furthermore, the outer filter cartridge and the top cover together form a shuttle-shaped structure.
[0016] Furthermore, the first water-permeable hole and the second water-permeable hole are both bell-shaped, and the hole opening on the outer side of the cylinder wall is smaller than the hole opening on the inner side of the cylinder wall.
[0017] Furthermore, the surfaces of the outer filter cartridge, the inner filter cartridge and the counterweight body are all provided with an electroplated anti-rust layer.
[0018] Furthermore, the water pipe is made of glass tube, which is not easily contaminated by sludge.
[0019] Furthermore, a clearance fit is adopted between the buoy and the water diversion pipe.
[0020] Compared with the prior art, the beneficial effects of the utility model are:
[0021] The utility model of the geotechnical investigation water level measuring instrument, by setting an outer filter cartridge and an inner filter cartridge, adopts a through-beam sensor which does not need to contact with water as a sensing component for detecting the groundwater level, and the through-beam sensor is embedded in the top cover of the outer filter cartridge. Through the action of the filter medium in the outer filter cartridge, dirt, sand and gravel and other debris are blocked, so that relatively clear water enters the inner filter cartridge, thereby avoiding the water pipe from being blocked or damaged, thereby ensuring the stability of the measurement data and improving the service life of the water level measuring device.
[0022] The utility model of the geotechnical investigation water level measuring instrument sets the inner filter cylinder into a cone shape, and the counterweight body is also set into a cone structure, and the self-weight of the counterweight body is used to make the cone surface coincide with the bottom opening of the inner filter cylinder, which not only prevents mud and sand from entering the inner filter cylinder from the bottom, but also makes the counterweight body not easy to fall off, so that the signal line is always in a completely straightened state, effectively ensuring the accuracy of the measurement data.
[0023] The utility model of the geotechnical survey water level measuring instrument arranges the outer filter cartridge into a shuttle-shaped structure, so that even if broken stones fall on the hole wall of the drill hole, they will slide down along the inclined surface of the outer filter cartridge; by placing the through-beam sensor in the filter cartridge, the safety of the sensor is effectively protected. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural schematic diagram of a water level measuring device for geotechnical investigation in the prior art;
[0025] Figure 2 It is a structural schematic diagram of the rock and soil survey water level measuring instrument of the utility model;
[0026] In the attached figure:
[0027] Top cover 1, upper tube 2, lower tube 3, first water permeable hole 31, inner filter tube 4, second water permeable hole 42, counterweight 5, water diversion pipe 6, buoy 7, light shielding column 71, through-beam sensor 8, filter medium 9, signal line 10. DETAILED DESCRIPTION
[0028] In order to enable those skilled in the art to better understand the technical solution of the present application, the present invention will be further described in detail below with reference to the accompanying drawings.
[0029] The terms such as up, down, left, right, front and back in this application document are based on the positional relationships shown in the drawings. If the drawings are different, the corresponding positional relationships may also change accordingly, so they cannot be understood as limiting the scope of protection.
[0030] The utility model provides a rock and soil survey water level measuring instrument, the structure of which is as follows Figure 2 As shown, the geotechnical investigation water level measuring instrument includes: a top cover 1, an upper tube 2, a lower tube 3, an inner filter tube 4, a counterweight 5, a water diversion pipe 6, a buoy 7, a beam sensor 8, a filter medium 9, and a signal line 10.
[0031] The upper cylinder 2 and the lower cylinder 3 are connected up and down to form an outer filter cylinder. The two can be connected by fasteners or threadedly connected by internal and external threads. The two can be detachable.
[0032] The outer filter cartridge has an opening at the top, and the opening is coaxially threadedly sealed with a top cover 1; the outer filter cartridge and the top cover 1 together form a shuttle-shaped structure. The shuttle-shaped structure not only facilitates the falling of the measuring instrument from the borehole, but also makes it easy for gravel that rolls onto the surface of the measuring instrument to slide off through the inclined surface of the shuttle-shaped structure.
[0033] A first water permeable hole 31 is opened on the side wall of the lower cylinder 3; the interior is filled with a filter medium 9, such as coconut palm.
[0034] The inner filter cartridge 4 is fixed inside the outer filter cartridge and is a hollow cone structure. A plurality of second water-permeable holes 41 are formed on the inner filter cartridge 4 .
[0035] The inner filter cartridge 4 has an opening at the bottom, and the counterweight 5 has an inverted cone structure, which relies on its own weight to make its cone surface coincide with the bottom opening of the inner filter cartridge.
[0036] The first water-permeable hole 31 and the second water-permeable hole 41 are both bell-shaped, and the hole on the outer side of the cylinder wall is smaller than the hole on the inner side of the cylinder wall, so that the sludge on the outer side of the filter cylinder is not easy to enter the filter cylinder, while the sludge in the filter cylinder is easy to flow to the outside of the filter cylinder with the water.
[0037] The surfaces of the outer filter cartridge, the inner filter cartridge 4 and the counterweight body 5 are all provided with an electroplated anti-rust layer to extend the service life, prevent rust and make disassembly and assembly difficult.
[0038] On the bottom end surface of the top cover 1, a coaxial threaded hole and a sensor mounting hole are opened from bottom to top; a water diversion pipe 6 is threadedly connected in the threaded hole, and a light transmitter and a light receiver of a corresponding sensor 8 are arranged in the sensor mounting hole.
[0039] A buoy 7 which can slide up and down is arranged in the water diversion pipe 6 , and a light shielding column 71 which can be inserted between the light emitter and the light receiver is arranged at the top of the buoy 7 , and the beam sensor 8 is connected to the control end through a signal line 10 .
[0040] The water diversion pipe 6 adopts a glass tube, which is not easy to be contaminated with sludge.
[0041] A clearance fit is adopted between the buoy 7 and the water diversion pipe 6, so that the buoy 7 can slide more smoothly.
[0042] The working principle of this utility model:
[0043] Through the action of the filter medium in the outer filter cartridge, dirt, sand, gravel and other debris are blocked, allowing relatively clear water to enter the inner filter cartridge 4.
[0044] As the water level that has penetrated into the inner filter cartridge 4 rises, the float 7 moves upward under the buoyancy of the water until the light-shielding column 71 at the top is inserted between the light emitter and the light receiver of the through-beam sensor 8. The through-beam sensor 8 sends an induction signal to the control end through the signal line 10, which controls the alarm device of the single-control water level measuring device to sound an alarm, indicating that the groundwater level has been reached, thereby completing the measurement of the groundwater level.
[0045] Compared with the prior art, the beneficial effects of the utility model are:
[0046] The utility model relates to a geotechnical survey and water level measuring instrument, which, by providing an outer filter cartridge and an inner filter cartridge, adopts a through-beam sensor which does not need to come into contact with water as a sensing component for detecting the groundwater level, and embeds the through-beam sensor on the top cover of the outer filter cartridge. Through the action of the filter medium in the outer filter cartridge, dirt, sand, gravel and other debris are blocked, allowing relatively clear water to enter the inner filter cartridge, thereby preventing the water pipe from being blocked or damaged, thereby ensuring the stability of the measurement data and increasing the service life of the water level measuring device.
[0047] The utility model of the geotechnical investigation water level measuring instrument sets the inner filter cylinder into a cone shape, and the counterweight body is also set into a cone structure, and the self-weight of the counterweight body is used to make the cone surface coincide with the bottom opening of the inner filter cylinder, which not only prevents mud and sand from entering the inner filter cylinder from the bottom, but also makes the counterweight body not easy to fall off, so that the signal line is always in a completely straightened state, effectively ensuring the accuracy of the measurement data.
[0048] The utility model of the geotechnical survey water level measuring instrument arranges the outer filter cartridge into a shuttle-shaped structure, so that even if broken stones fall on the hole wall of the drill hole, they will slide down along the inclined surface of the outer filter cartridge; by placing the through-beam sensor in the filter cartridge, the safety of the sensor is effectively protected.
[0049] The utility model of the geotechnical investigation water level measuring instrument has an outer filter upper cylinder, an outer filter lower cylinder, an inner filter cylinder, a top cover and a water diversion pipe connected by threads, which is convenient for disassembly and assembly and for regular cleaning and maintenance.
[0050] Although the utility model has been disclosed as a preferred embodiment, the embodiment does not limit the utility model. Any equivalent changes or modifications made without departing from the spirit and scope of the utility model also belong to the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the content defined by the claims of this application.
Claims
1. A rock and soil survey water level measuring instrument, the rock and soil survey water level measuring instrument include: The top cover (1), the filter cartridge, the counterweight (5), the water diversion pipe (6), the buoy (7), the beam sensor (8) and the signal line (10) are characterized by: The filter cartridge comprises: an outer filter cartridge formed by connecting an upper cartridge (2) and a lower cartridge (3), and an inner filter cartridge (4) fixed inside the outer filter cartridge; a first water permeable hole (31) is opened on the side wall of the lower cartridge (3); the interior is filled with a filter medium (9); the inner filter cartridge (4) is a hollow cone structure, and a second water permeable hole (41) is opened on the cone surface; The outer filter cartridge has an opening at the top, and a top cover (1) is connected to the opening; a water diversion pipe (6) is connected to the bottom end surface of the top cover (1), and a light emitter and a light receiver of a corresponding sensor (8) are provided; A buoy (7) capable of sliding up and down is arranged in the water diversion pipe (6), a light shielding column (71) capable of being inserted between the light emitter and the light receiver is arranged at the top of the buoy (7), and the corresponding radiation sensor (8) is connected to the control end via a signal line (10).
2. The geotechnical survey water level measuring instrument according to claim 1, Features: The inner filter cartridge (4) is a hollow cone structure with an opening at the bottom; The geotechnical investigation water level measuring instrument further comprises a counterweight (5), which is in the form of an inverted cone structure, and relies on its own weight to allow its cone surface to fit in with the bottom opening of the inner filter cartridge (4).
3. The geotechnical survey water level measuring instrument according to claim 1, Features: The outer filter cartridge and the top cover (1) together form a shuttle-shaped structure.
4. The geotechnical survey water level measuring instrument according to claim 1, Features: The first water-permeable hole (31) and the second water-permeable hole (41) are both bell-shaped, and the hole opening on the outer side of the cylinder wall is smaller than the hole opening on the inner side of the cylinder wall.
5. The geotechnical survey water level measuring instrument according to claim 2, Features: The surfaces of the outer filter cylinder, the inner filter cylinder (4) and the counterweight (5) are all provided with an electroplated rust-proof layer.
6. The geotechnical survey water level measuring instrument according to claim 1, Features: The water diversion pipe (6) is a glass tube.
7. The geotechnical survey water level measuring instrument according to claim 1, Features: The buoy (7) and the water diversion pipe (6) are clearance-fitted.