Self-adaptive underground water drainage control device
By using the floating structure and scale rod system of the adaptive groundwater drainage control device, the problem of not being able to warn of water level exceeding the standard when the water pump fails is solved, realizing automatic control and timely reminder of water level changes, and ensuring the safety of the structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-08
AI Technical Summary
Existing automatic start-stop water pump devices cannot effectively warn of excessive water levels when they malfunction, leading to a continuous rise in groundwater levels and increasing safety hazards such as landslides.
Design an adaptive groundwater drainage control device that uses a floating structure to automatically start and stop the water pump according to the water level. When the water level exceeds the standard, the device alerts the staff through a scale rod and rope system. The floating body separates from the structure when it encounters water, thus significantly changing the position of the scale rod.
It enables timely warnings of excessive water levels when water pumps malfunction, ensuring that staff can take timely measures to avoid safety hazards and protect the safety of structures.
Smart Images
Figure CN224213349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of groundwater drainage technology, specifically to an adaptive groundwater drainage control device. Background Technology
[0002] Groundwater drainage is crucial in the construction and operation of landslides and landfills, spoil heaps, roads, buildings, and other structures. To ensure the safety of these structures, groundwater levels must be strictly controlled to prevent them from exceeding predetermined control lines. For this purpose, water pumps that automatically start and stop based on water levels are typically installed. When the water level rises to a certain level, the pumps begin drainage; when the water level drops, the pumps stop, thus maintaining a stable groundwater level and ensuring that the structures operate in a safe environment.
[0003] However, existing automatic start-stop water pumps have significant drawbacks in actual operation. Once the pump malfunctions, such as motor failure or pipe blockage, it cannot drain water normally. At this time, the groundwater level will continue to rise. If it is not detected and dealt with in time, the water level can easily exceed the control line, thereby soaking and softening the soil at the toe of the slope, increasing the risk of landslides and other safety hazards, and seriously threatening the safety of structures.
[0004] Currently, drainage control devices lack structures that can effectively warn of pump malfunctions and excessive water levels. When drainage fails, they cannot intuitively remind relevant personnel that the water level has exceeded the safe range. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model proposes an adaptive groundwater drainage control device to solve the problem that drainage control devices lack a structure that can effectively warn of pump failures and water level exceeding the standard, and cannot intuitively remind relevant personnel that the water level has exceeded the safe range when drainage fails.
[0006] The technical solution adopted by this utility model is an adaptive groundwater drainage control device, comprising:
[0007] A catchment area, in which groundwater seeps in from the periphery and / or bottom of the catchment area;
[0008] A float is located in the water collection area and rises and falls with the water level in the water collection area. The float includes an upper float and a lower float connected as one unit by a water-repellent structure. A scale rod is provided on the upper float and a pull rope is connected to the lower float.
[0009] The system includes a water pump located within the water collection area. The water pump is equipped with a drain pipe and a switch box. The drain pipe extends outside the water collection area. The pull rope is connected to the switch box and switches between the start and stop states of the water pump based on the pulling force.
[0010] Optionally, the upper and lower floating bodies are bonded together by a water-soluble substance, and the connection dissolves when exposed to water, causing the upper and lower floating bodies to separate.
[0011] Optionally, the upper and lower floating bodies are connected as one unit by friction. When the upper floating body encounters water, it generates buoyancy, which overcomes the friction and causes the upper floating body to separate from the lower floating body.
[0012] Optionally, a cavity and a protrusion that cooperate with each other are provided between the upper and lower buoyant bodies. The sides of the cavity and the protrusion are connected by friction, and the bottom surfaces of the cavity and the protrusion are bonded together with a water-soluble substance.
[0013] Optionally, the switch box includes:
[0014] A housing with a working chamber;
[0015] The fixed contact and the movable contact are located inside the housing. One end of the movable contact is movably connected to the housing, and the other end has two working positions: contacting and disengaging from the fixed contact, corresponding to the two working states of the water pump being started and stopped.
[0016] A sliding body that is sealed and slides through the housing, located on the outside of the housing, connected to the pull rope, and inside the working cavity of the housing, connected to the movable contact.
[0017] When the float pulls the sliding body, the sliding body pulls the movable contact point to a position where it contacts the fixed contact point.
[0018] Optionally, the active contact is hinged or flexibly connected to the housing.
[0019] Optionally, the slider and the movable contact are connected by a flexible rope.
[0020] Optionally, it also includes an elastic element connected between the movable contact and the switch housing, having an initial pulling force to disengage the movable contact from the fixed contact.
[0021] Optionally, the water collection area is a water well with a cover plate at the wellhead.
[0022] Optionally, the cover plate is provided with a hole through which the ruler rod passes.
[0023] As can be seen from the above technical solution, the beneficial technical effects of this utility model are as follows:
[0024] During the automatic start-stop operation of the water pump, if a malfunction in any part causes drainage failure, the unique design of the buoy body plays a crucial role. Upon contact with water, it automatically separates into an upper and lower buoy body, with the gauge rod on the upper buoy rising with the water level. Workers can visually observe the change in the gauge rod from the outside, and this obvious change promptly alerts relevant personnel that the water level has exceeded the safe range, allowing for swift action and effectively preventing safety hazards caused by drainage failure, thus ensuring the safety of the structure. Attached Figure Description
[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0026] Figure 1 This is a schematic diagram of the overall design of this utility model;
[0027] Figure 2 This is a schematic diagram of the upper and lower floating bodies of this utility model in the detached state;
[0028] Figure 3 This utility model Figure 1 Enlarged view of a portion of point A in the middle;
[0029] Figure 4 This utility model Figure 2 Enlarged view of a portion of point B in the middle;
[0030] Reference numerals: 1. Water collection area; 20. Upper float; 21. Scale rod; 22. Lower float; 23. Water-soluble substance; 24. Friction force; 3. Pull rope; 4. Water pump; 40. Drain pipe; 41. Switch box; 411. Fixed contact; 412. Moving contact; 413. Sliding body; 414. Hinge; 415. Flexible rope; 416. Elastic element. Detailed Implementation
[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0032] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
[0033] This embodiment provides an adaptive groundwater drainage control device, one possible implementation of which includes:
[0034] In catchment area 1, groundwater seeps in from the surrounding area and / or bottom. Catchment areas are typically created by excavating from the ground to form wells, sump pits, or other similar structures. During excavation, it is crucial to ensure that the pit walls and / or bottom are permeable. Specifically, materials with a certain degree of permeability can be used to construct the pit walls and / or bottom, such as permeable sand, gravel, or other similar materials for paving or filling. Porous precast concrete blocks (precast pipes) can also be used. This design allows groundwater to smoothly seep into the catchment area from the surrounding area and / or bottom, where it is effectively collected and gathered, providing conditions for subsequent drainage operations, while simultaneously ensuring the strength of the walls to prevent collapse.
[0035] The float is located in the water collection area 1 and rises and falls with the water level in the water collection area 1. The float includes an upper float 20 and a lower float 22 connected as one unit by a water-repellent structure. A scale rod 21 is installed on the upper float 20, and a pull rope 3 is connected to the lower float 22. The float can be made of a variety of materials, such as foam plastics, such as polystyrene foam, which has low density, high buoyancy and low cost; wood materials, such as waterproofed pine and fir, which have a certain buoyancy and strength; rubber materials are also a good choice, such as floats made of natural or synthetic rubber, which have good wear resistance and corrosion resistance; in addition, some composite materials, such as fiberglass, have the advantages of being lightweight, high-strength and corrosion-resistant, and are also suitable as materials for making floats.
[0036] A water pump 4 is installed within the water collection area 1. The water pump is equipped with a drain pipe 40 and a switch box 41. The drain pipe 40 extends outside the water collection area 1, and a pull rope 3 is connected to the switch box 41. The pull rope switches between the start and stop states of the water pump 4 based on the pulling force. The switch box 41 can be either mechanical or electronic. A water pump is a device that uses a mechanical or electrical power source to draw liquid (water in this scenario) from a low place or a specific container and transport it to a high place or a designated location. It generates centrifugal force or a positive / negative pressure difference through internal rotating impellers and other components, causing the liquid to be drawn in and discharged through pipes. It is widely used in drainage, irrigation, and water supply.
[0037] In normal operating conditions: The float rises and falls with the groundwater level in the catchment area 1. When the rise or fall is within the length of the pull rope 3, the tension of the pull rope 3 is insufficient to activate the switch box 41, so the water pump 4 will be in a stopped state. As the water level continues to rise, the length of the pull rope 3 reaches its limit. If the water level continues to rise, the float continues to rise and pulls the pull rope 3 taut. Since the pull rope 3 can no longer extend, the buoyancy of the groundwater on the float will be converted into a tension on the switch box 41, thereby triggering the switch box 41 to switch to the start-up state and drain water, causing the water level to drop.
[0038] The above describes a normal working scenario. Due to the harsh working conditions, water pumps have a high failure rate. If a water pump malfunctions, the existing adaptive groundwater drainage control device will fail, specifically, the drainage function will fail when the water level rises. In this embodiment, to address this issue, the float of the drainage control device is designed as a separate structure. When the device is working normally, the float rises and falls with the water level. When drainage fails, the water level will submerge the float. The upper float 20 and lower float 22 are connected as a single unit using a water-repellent structure. When the water level is higher than the float (but not past the dividing line), the upper float detaches from the lower float 22. The upper float continues to rise with the water level, raising the scale rod 21. Figure 2 As shown, this allows relevant personnel to clearly notice changes in the measuring rod 21 on the ground, thereby determining abnormal water levels and taking effective obstacle removal measures. To enhance the warning effect of the measuring rod 21, a brightly colored cloth strip, such as red or yellow, can be hung at the end of the measuring rod 21.
[0039] The beneficial effects of the above embodiments include: on the one hand, the adaptive groundwater drainage control device can automatically start and stop drainage according to changes in groundwater level, accurately control the drainage volume, effectively maintain the stability of groundwater level, and ensure the safety of structures; on the other hand, when a failure occurs in a certain part of the device, causing drainage failure, the float can automatically separate and raise the scale rod, so that staff can see it intuitively from the outside, thereby automatically warning of excessive water level, timely reminding relevant personnel to check the fault, avoiding safety hazards caused by excessive water level, and greatly improving the safety and reliability of groundwater drainage.
[0040] The following examples provide several possible implementations of the water-repellent structure.
[0041] In one method, the upper float 20 and the lower float 22 are bonded together by a water-soluble substance 23. Upon contact with water, the connecting part dissolves, causing the upper float 20 to detach from the lower float 22. During normal operation, the water level is always below the connecting part between the upper float 20 and the lower float 22. Only when drainage fails can the water level submerge the boundary area between the upper float 20 and the lower float 22, thereby dissolving the connecting part and causing the upper and lower floats to detach. After solidification, the water-soluble substance 23 can redissolve upon contact with water again and quickly lose its adhesive function. Many types of adhesives are used, such as hydrolyzed adhesives, commonly including white glue and super glue. Taking white glue as an example, it softens upon contact with water, thus losing its adhesiveness. This softening process takes time and does not immediately cause adhesive failure upon contact with water, reducing the risk of malfunction.
[0042] In another configuration, the upper float 20 and the lower float 22 are connected as one unit by friction 24. When the upper float 20 encounters water, it generates buoyancy, which overcomes the friction 24, causing the upper float 20 to detach from the lower float 22. In this configuration, an interlocking interface is required between the upper float 20 and the lower float 22, and the interface is connected by friction through an interference fit. Once the water level submerges the floats, the difference in buoyancy between the water and the upper and lower floats creates a pulling force, pulling the upper float off the lower float and allowing it to float independently.
[0043] The two methods mentioned above can also be combined, such as... Figure 3 As shown, a cavity and a protrusion are provided between the upper float 20 and the lower float, and the sides of the cavity and the protrusion are connected by friction force 24. The bottom surfaces of the cavity and the protrusion are bonded together with a water-soluble substance 23. Only when the float is soaked for a long time and water gradually seeps to the bottom surfaces of the cavity and the protrusion will it detach, thus avoiding malfunctions caused by rainwater, etc.
[0044] The following provides an embodiment of a mechanical switch box 41, which includes:
[0045] The housing has a working chamber, and the inside can be evacuated to reduce arcing during the switching process;
[0046] A fixed contact 411 and a movable contact 412 are located within the housing. One end of the movable contact 412 is movably connected to the housing, while the other end has two working positions: contacting and disengaging from the fixed contact 411, corresponding to the start and stop states of the water pump 4. The movable contact 412 is hinged to the housing 414 or flexibly connected. A flexible connection refers to a soft connection, such as a connection via a rubber sheet, allowing the movable contact 412 to move relative to the housing (fixed contact 411). The fixed contact 411 and the movable contact 412 are configured in one circuit of the water pump circuit, controlling the start and stop states of the water pump through their on / off states.
[0047] A sliding body 413, which is sealed and slides through the housing, is located on the outside of the housing and connected to a pull rope 3. Inside the working cavity of the housing, the sliding body 413 is connected to a movable contact 412. The sliding body 413 and the movable contact 412 are connected by a flexible rope 415 or by a hinged rod. Limiting structures are required on the inner and outer sides of the sliding body 413 to prevent it from detaching from the housing.
[0048] When the float pulls the sliding body 413, the sliding body 413 pulls the movable contact 412 to the position of contacting the fixed contact 411, thereby connecting the circuit and starting the water pump. When the water level drops, the float drops accordingly, the sliding body 413 loses its pulling force, and then resets under its own weight or external force, disconnecting the circuit and stopping the water pump.
[0049] To ensure that when the water level drops and the float loses its tension on the sliding body 413 and the movable contact 412, the movable contact 412 can accurately reset, thereby disconnecting the water pump power circuit, an elastic element 416 is also included. The elastic element 416 is connected between the movable contact 412 and the switch box 41 housing, and has an initial tension that disengages the movable contact 412 from the fixed contact 411. If the water level rises, the buoyancy pulls the movable contact 412 to overcome the elastic force of the elastic element 416 (spring or elastic rope) and make contact with the fixed contact 411 to connect the power circuit and start the water pump. After the water level drops, the buoyancy is less than the elastic force of the elastic element 416, and the elastic element 416 resets the movable contact 412 and disengages it from the fixed contact 411, thereby shutting down the water pump.
[0050] In another embodiment of the switch box 41, the switch box 41 uses an electronic switch with a time-delay reset function. This type of switch is existing technology, and its operation is as follows: after the switch is triggered, it delays for a period of time and then automatically resets. Applied to this embodiment, once the water level rises and the rope is pulled to trigger the switch, thereby activating the water pump, even if the water level drops and the pulling force disappears, the switch will not immediately reset and disconnect. Instead, it will automatically delay for a period of time before switching. Its function in this embodiment is to utilize the delay time to pump more water, lower the water level, and avoid frequent start-stop of the water pump.
[0051] In addition, for safety reasons, the water collection area 1 is a sump well with a cover to prevent it from falling in. The cover has a hole through which the measuring rod 21 passes. In the event of a drainage device malfunction, as the water level rises, the buoy will carry the measuring rod 21 upwards through the hole, allowing personnel to visually observe the rod and monitor water level changes, thus enabling timely troubleshooting.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. An adaptive groundwater drainage control device, characterized in that, include: A catchment area (1) in which groundwater seeps in from the periphery and / or bottom of the catchment area (1); The float is located in the water collection area (1) and rises and falls with the water level of the water collection area (1). The float includes an upper float (20) and a lower float (22) connected together by a water-removing structure. A scale rod (21) is provided on the upper float (20), and a pull rope (3) is connected to the lower float (22). And a water pump (4), the water pump (4) is located in the water collection area (1), the water pump is equipped with a drain pipe (40) and a switch box (41), the drain pipe (40) is led out to the outside of the water collection area (1), the pull rope (3) is connected to the switch box (41), and the water pump (4) is switched between start and stop working states according to the pulling force.
2. The adaptive groundwater drainage control device as described in claim 1, characterized in that: The upper floating body (20) and the lower floating body (22) are bonded together by a water-soluble substance (23). When they come into contact with water, the connection part dissolves and the upper floating body (20) and the lower floating body (22) separate.
3. The adaptive groundwater drainage control device as described in claim 1, characterized in that: The upper floating body (20) and the lower floating body (22) are connected as one unit by friction force (24). When the upper floating body (20) encounters water, it generates buoyancy. The buoyancy overcomes the friction force (24) and causes the upper floating body (20) to separate from the lower floating body (22).
4. The adaptive groundwater drainage control device as described in claim 1, characterized in that: The upper buoy (20) and the lower buoy are provided with a cavity and a protrusion that cooperate with each other. The sides of the cavity and the protrusion are connected by friction (24), and the bottom surfaces of the cavity and the protrusion are bonded together with a water-soluble substance (23).
5. The adaptive groundwater drainage control device as described in claim 1, characterized in that, The switch box (41) includes: A housing with a working chamber; The fixed contact (411) and the movable contact (412) are located inside the housing. One end of the movable contact (412) is movably connected to the housing, and the other end has two working positions: contacting and disengaging from the fixed contact (411), corresponding to the two working states of the water pump (4) starting and stopping. A sliding body (413) that is sealed and slides through the housing, is located outside the housing, is connected to the pull rope (3), and is located inside the working cavity of the housing, is connected to the movable contact (412). When the float pulls the sliding body (413), the sliding body (413) pulls the movable contact (412) to a position where it contacts the fixed contact (411).
6. The adaptive groundwater drainage control device as described in claim 5, characterized in that: The active contact (412) is hinged (414) or flexibly connected to the housing.
7. The adaptive groundwater drainage control device as described in claim 5, characterized in that: The slider (413) is connected to the movable contact (412) by a flexible rope (415).
8. The adaptive groundwater drainage control device as described in claim 5, characterized in that: It also includes an elastic element (416) connected between the active contact (412) and the switch box (41) housing, having an initial pulling force that disengages the active contact (412) from the fixed contact (411).
9. The adaptive groundwater drainage control device as described in claim 1, characterized in that: The water collection area (1) is a water well with a cover plate at the wellhead.
10. The adaptive groundwater drainage control device as described in claim 9, characterized in that: The cover plate has a hole through which the ruler rod (21) passes.