Automatic monitoring and drainage device for water level of dewatering well

Abstract

The utility model provides a dewatering well water level automatic monitoring drainage device which comprises a fixing plate fixedly installed at a dewatering well mouth, a control switch assembly arranged outside a dewatering well and a water suction pump arranged at the bottom of the dewatering well. The control switch assembly is electrically connected with a power source of the water suction pump, a first hole for an early warning rod to penetrate through is formed in the fixing plate, a floating ball is installed at the lower end of the early warning rod, and the floating ball and the early warning rod rise and fall along with the water level in the dewatering well. The upper end of the early warning rod is connected with a water level early warning assembly used for controlling the control switch assembly to be switched on and switched off at the water level upper limit and the water level lower limit in the dewatering well. The water level early warning assembly and the control switch assembly are matched through the early warning rod and the floating ball along with ascending and descending of the water level in the dewatering well, so that working and stopping of the water suction pump are automatically controlled, waste of manpower, material resources and resources in the foundation pit dewatering process is reduced, operation and installation are convenient and fast, and construction cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, and in particular relates to a device for automatically monitoring and draining the water level of a precipitation well. Background Art

[0002] During construction, foundation pit dewatering is performed when the groundwater level is higher than the excavation bottom. This process is done to ensure dry conditions for construction and prevent slope instability, foundation sand flow, pit bottom heave, piping, and a decrease in foundation bearing capacity. Dewatering is a crucial step in deep foundation pit construction, and a significant number of foundation pit accidents are related to groundwater.

[0003] During foundation pit dewatering, pipe well dewatering is widely used in underground dewatering construction. Due to the complex underground environmental conditions and inconvenient observation, construction management personnel often fail to conduct adequate inspections. This can lead to pump damage and waste of electricity when the water level drops to the designed height and the well is empty. Furthermore, the groundwater level is easily affected by the surrounding environment and may rise if drainage is not carried out in a timely manner, impacting construction quality, construction schedule, and causing economic losses. Utility Model Content

[0004] The purpose of the utility model is to provide a device for automatically monitoring the water level of a precipitation well, which can at least solve some of the defects in the prior art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for automatically monitoring and draining the water level in a precipitation well comprises a fixed plate fixedly mounted on the wellhead of the precipitation well, a control switch assembly arranged outside the precipitation well, and a water pump arranged at the bottom of the precipitation well; the control switch assembly is electrically connected to a power supply of the water pump, a hole is provided on the fixed plate for an early warning rod to pass through, a float is installed at the lower end of the early warning rod, the float and the early warning rod rise and fall with the water level in the precipitation well, and a water level early warning assembly is connected to the upper end of the early warning rod for controlling the opening and closing of the control switch assembly at the upper and lower limits of the water level in the precipitation well, respectively.

[0007] Furthermore, the control switch assembly includes a control switch, one end of which has a disconnection point A and a closing point C, and the water level warning assembly is electrically connected to the closing point C and the disconnection point A of the control switch at the upper and lower limits of the water level in the precipitation well, respectively, and the other end of the control switch is electrically connected to the power supply of the water pump.

[0008] Furthermore, the water level warning assembly includes an upper limit water level warning component, a lower limit water level warning component, a first metal plate and a second metal plate, the first metal plate and the second metal plate are respectively installed on the upper and lower sides of the fixed plate, the first metal plate and the second metal plate are respectively electrically connected to the disconnection point A and the closing point C of the control switch, the upper limit water level warning component contacts the second metal plate at the upper limit of the water level in the precipitation well, and the lower limit water level warning component contacts the first metal plate at the lower limit of the water level in the precipitation well.

[0009] Furthermore, the water level warning assembly also includes a conductive rod, the lower end of the conductive rod is connected to the warning rod, the upper end of the conductive rod is connected to the point B between the disconnection point A and the closing point C on the control switch through a wire, and the upper limit water level warning component and the lower limit water level warning component are connected to the conductive rod at intervals.

[0010] Furthermore, both the upper limit water level warning component and the lower limit water level warning component can be made of elastic metal sheets.

[0011] Furthermore, the warning rod is formed by connecting several sections of lightweight plastic rods through sleeves.

[0012] Furthermore, the float is fixed to the lightweight plastic rod at one end of the warning rod by hot melting.

[0013] Furthermore, a guide plate is provided inside the precipitation well for guiding the lifting and lowering of the early warning rod.

[0014] Furthermore, the guide plate is arranged parallel to the fixed plate, and the two sides of the guide plate are connected to the fixed plate through long strips. A second hole for the warning rod to pass through is provided on the guide plate, and the second hole is arranged coaxially with the hole.

[0015] Furthermore, the above-mentioned precipitation well water level automatic monitoring and drainage device also includes a water collection well arranged outside the precipitation well, and the water pump is connected to the water collection well through a drainage pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The automatic water level monitoring and drainage device for the dewatering well provided by the utility model utilizes an early warning rod and a float to rise and fall with the water level in the dewatering well, so that the water level early warning component and the control switch component cooperate to automatically control the operation and stop of the water pump, thereby reducing the waste of manpower, material and resources during the foundation pit dewatering process, and the operation and installation are convenient and quick, thereby reducing construction costs.

[0018] The present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a working elevation view of the automatic monitoring and drainage device for the water level of a precipitation well of the utility model when the water level rises to the designed precipitation surface;

[0020] Figure 2 This is a schematic diagram of the connection between the water level warning component and the control switch component when the water level rises to the designed drop level in the utility model;

[0021] Figure 3 This is a working elevation view of the automatic monitoring and drainage device for the water level of a precipitation well of the utility model when the water level drops to the surface layer of the water pump;

[0022] Figure 4 It is a schematic diagram of the connection between the water level warning component and the control switch component when the water level in the utility model drops to the surface layer of the water pump.

[0023] Explanation of the accompanying symbols: 1. Dewatering well; 2. Float; 3. Warning rod; 4. Guide plate; 5. Long strip; 6. Fixed plate; 7. First metal plate; 8. Conductive rod; 9. Lower water level warning component; 10. Control switch; 11. Water collection well; 12. Water pump; 13. Sleeve; 14. Second metal plate; 15. Upper water level warning component; 16. Metal ring. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0028] like Figures 1 to 4 As shown, this embodiment provides an automatic monitoring and drainage device for the water level in a precipitation well, including a fixed plate 6 fixedly installed at the wellhead of the precipitation well 1, a control switch assembly arranged outside the precipitation well 1, and a water pump 12 arranged at the bottom of the precipitation well 1; the control switch assembly is electrically connected to the power supply of the water pump 12, and a hole is provided on the fixed plate 6 for the early warning rod 3 to pass through. A float 2 is installed at the lower end of the early warning rod 3, and the float 2 and the early warning rod 3 rise and fall with the water level in the precipitation well 1. The upper end of the early warning rod 3 is connected to a water level early warning assembly for controlling the opening and disconnection of the control switch assembly at the upper and lower limits of the water level in the precipitation well 1, respectively. During operation, when the water level in the dewatering well rises to the designed dewatering surface (i.e., the upper limit of the water level), the water level drives the float 2 and the warning rod 3 to rise, and the water level warning component connected to the warning rod 3 controls the control switch component to be in the open state, so that the power supply of the water pump 12 is energized, and the water pump 12 works normally; when the water level in the dewatering well 1 drops to the surface layer of the water pump (i.e., the lower limit of the water level), the water level drives the float 2 and the warning rod 3 to drop, and at this time the water level warning component connected to the warning rod 3 controls the control switch component to be in the disconnected state, so that the power supply of the water pump 12 is cut off, and the water pump 12 stops working. The automatic monitoring and drainage device for the water level of the dewatering well of this embodiment utilizes the warning rod and the float to rise and fall with the water level in the dewatering well, so that the water level warning component and the control switch component cooperate, thereby automatically controlling the operation and stopping of the water pump, reducing the waste of manpower, material and resources during the foundation pit dewatering process, and is convenient and quick to operate and install, reducing construction costs.

[0029] Among them, the fixing plate 6 is an ordinary wooden board with customized snap-ons on both sides and a circular hole in the middle. The snaps are used to engage and fix with the wellhead of the precipitation well 1 to ensure that the fixing plate 6 will not move at the wellhead of the precipitation well 1. The circular hole in the middle is hole 1, which is used for the warning rod 3 to pass through. The size of the circular hole is determined according to the diameter of the warning rod 3. It is necessary to ensure that the warning rod 3 can be freely raised and lowered in the circular hole, and the warning rod 3 cannot fall during the raising and lowering process.

[0030] Optimized, a guide plate 4 is provided inside the dewatering well 1 to guide the raising and lowering of the warning rod 3. This prevents the warning rod 3 from tipping over as the water level in the dewatering well 1 rises and falls, thereby improving the accuracy of intelligent control. Specifically, the guide plate 4 is arranged parallel to the fixed plate 6, and is connected to the fixed plate 6 on both sides by long strips 5. The guide plate 4 is provided with a second hole for the warning rod 3 to pass through, and the second hole is arranged coaxially with the first hole.

[0031] In order to ensure that the float 2 and the warning rod 3 can rise and fall with the water level in the dewatering well 1, the warning rod 3 and the float 2 are preferably made of plastic material to reduce the weight of the warning rod 3 and the float 2. Preferably, the float 2 is designed to be a hollow plastic ball, and its diameter can be designed according to actual needs to ensure that the float 2 can float on the water surface.

[0032] Optimally, the warning pole 3 is designed to be constructed from several sections of lightweight plastic rod connected by sleeves. This allows for on-site assembly of different lengths based on the actual depth of the dewatering well, increasing its applicability and allowing for reuse. Furthermore, the lightweight plastic rod is short and easy to transport. Specifically, in this embodiment, the lightweight plastic rod is 5 mm in diameter and 1 m long. The float 2 is fixed to the lightweight plastic rod at one end of the warning pole 3 by hot-melt, ensuring that the float 2 is not damaged.

[0033] As a specific implementation method, Figure 2 and Figure 4As shown, the control switch assembly includes a control switch 10, and one end of the control switch 10 has a disconnection point A and a closing point C. The water level warning assembly is electrically connected to the closing point C and the disconnection point A of the control switch 10 at the upper limit and the lower limit of the water level in the precipitation well, respectively. The other end of the control switch 10 is electrically connected to the power supply of the water pump 12. In some embodiments, the water level warning assembly includes an upper limit water level warning component 15, a lower limit water level warning component 9, a first metal plate 7 and a second metal plate 14. The first metal plate 7 and the second metal plate 14 are respectively mounted on the upper and lower surfaces of the fixed plate 6. The first metal plate 7 and the second metal plate 14 are electrically connected to the disconnection point A and the closing point C of the control switch 10, respectively. The upper limit water level warning component 15 contacts the second metal plate 14 at the upper limit of the water level in the precipitation well, and the lower limit water level warning component 9 contacts the first metal plate 7 at the lower limit of the water level in the precipitation well. Specifically, the upper limit water level warning component 15 contacts the second metal plate 14 at the upper limit of the water level in the precipitation well, and the lower limit water level warning component 9 contacts the first metal plate 7 at the lower limit of the water level in the precipitation well. The warning component 15 is located below the fixed plate 6, and the lower limit water level warning component 9 is located above the fixed plate 6. The distance between the upper limit water level warning component 15 and the lower limit water level warning component 9 is the distance between the surface of the water pump 12 placed in the precipitation well 1 and the designed precipitation surface; the water level warning assembly also includes a conductive rod 8, the lower end of the conductive rod 8 is connected to the warning rod 3 through a sleeve 13, and the upper end of the conductive rod 8 is connected to the point B between the disconnection point A and the closing point C on the control switch through a wire. The upper limit water level warning component 15 and the lower limit water level warning component 9 are connected to the conductive rod 8 at intervals. When the water level in the precipitation well 1 rises to the designed precipitation surface, as shown in FIG. Figure 2 As shown, the water level drives the float 2 and the warning rod 3 to rise, and the upper water level warning member 15 located below the fixed plate 6 will contact the second metal plate 14, and the B and C points of the control switch 10 will form a closed loop through the wire. At this time, the control switch 10 is in the open state, the power supply of the water pump 12 is energized, and the water pump 12 works normally; when the water level in the precipitation well 1 drops to the surface layer of the water pump 12, as shown in FIG. Figure 4 As shown, the water level drives the float 3 and the warning rod 4 to descend, and the lower limit water level warning component 9 located above the fixed plate 6 will contact the first metal plate 7, and the A and B points of the control switch 10 will form a closed loop through the wire. At this time, the control switch 10 is in the disconnected state, the power supply of the water pump 12 is cut off, and the water pump 12 stops working.

[0034] Optionally, the upper limit water level warning component 15 and the lower limit water level warning component 9 can both be made of elastic metal sheets; the first metal plate 7 and the second metal plate 14 can be made of ordinary conductive metal sheets, and the first metal plate 7 and the second metal plate 14 are fixed on the surface of the fixed plate 6 with the hole position of the fixed plate 6 as the center.

[0035] Optionally, the conductive rod 8 is an adjustable plastic rod with a metal wire, i.e., a metal wire is contained within the plastic rod, the length of which is adjusted via a retractable sleeve in the middle. Both the upper and lower water level warning components 15 and 9 are connected to the metal wire within the plastic rod. Furthermore, a metal ring 16 is attached to the top of the conductive rod 8 and is connected to point B of the control switch via an insulated conductor. Specifically, the metal ring 16 is welded to the metal wire of the conductive rod 8, and the insulated conductor is a wire that is insulated on the outside and conductive on the inside.

[0036] In an optional implementation manner, the automatic monitoring and drainage device for the water level of the precipitation well of this embodiment also includes a water collection well 11 arranged outside the precipitation well 1, and the water pump 12 is connected to the water collection well 11 through a drainage pipe; when the water pump 12 works normally, the water in the precipitation well 1 is pumped into the water collection well 11 and discharged through the drainage outlet on the water collection well 11.

[0037] To sum up, the automatic water level monitoring and drainage device for the dewatering well provided by the utility model utilizes an early warning rod and a float to rise and fall with the water level in the dewatering well, so that the water level early warning component and the control switch component cooperate to automatically control the operation and stop of the water pump, thereby reducing the waste of manpower, material and resources during the foundation pit dewatering process, and the operation and installation are convenient and quick, thereby reducing construction costs.

[0038] The above examples are merely illustrative of the present invention and do not limit the scope of protection of the present invention. Any design that is identical or similar to the present invention falls within the scope of protection of the present invention.

Claims

1. A device for automatically monitoring and draining water levels in a precipitation well, characterized by: It includes a fixed plate fixedly installed on the wellhead of the precipitation well, a control switch assembly arranged outside the precipitation well, and a water pump arranged at the bottom of the precipitation well; the control switch assembly is electrically connected to the power supply of the water pump, and a hole is provided on the fixed plate for the early warning rod to pass through. A float is installed at the lower end of the early warning rod, and the float and the early warning rod rise and fall with the water level in the precipitation well. The upper end of the early warning rod is connected to a water level early warning assembly for controlling the opening and disconnection of the control switch assembly at the upper and lower limits of the water level in the precipitation well respectively.

2. The automatic water level monitoring and drainage device for a precipitation well according to claim 1, characterized in that: The control switch assembly includes a control switch, one end of which has a disconnection point A and a closing point C. The water level warning assembly is electrically connected to the closing point C and the disconnection point A of the control switch at the upper and lower limits of the water level in the precipitation well, respectively. The other end of the control switch is electrically connected to the power supply of the water pump.

3. The automatic monitoring and drainage device for the water level of a precipitation well according to claim 2, characterized in that: The water level warning assembly includes an upper limit water level warning component, a lower limit water level warning component, a first metal plate and a second metal plate. The first metal plate and the second metal plate are respectively installed on the upper and lower sides of the fixed plate. The first metal plate and the second metal plate are respectively electrically connected to the disconnection point A and the closing point C of the control switch. The upper limit water level warning component contacts the second metal plate at the upper limit of the water level in the precipitation well, and the lower limit water level warning component contacts the first metal plate at the lower limit of the water level in the precipitation well.

4. The automatic water level monitoring and drainage device for a precipitation well according to claim 3, characterized in that: The water level warning assembly also includes a conductive rod, the lower end of the conductive rod is connected to the warning rod, the upper end of the conductive rod is connected to the point B between the disconnection point A and the closing point C on the control switch through a wire, and the upper limit water level warning component and the lower limit water level warning component are connected to the conductive rod at intervals.

5. The automatic water level monitoring and drainage device for a precipitation well according to claim 3, characterized in that: The upper limit water level warning component and the lower limit water level warning component can both be made of elastic metal sheets.

6. The automatic water level monitoring and drainage device for a precipitation well according to claim 1, characterized in that: The warning rod is formed by connecting a plurality of sections of lightweight plastic rods through sleeves.

7. The automatic water level monitoring and drainage device for a precipitation well according to claim 6, characterized in that: The float is fixed to the lightweight plastic rod at one end of the warning rod by hot melting.

8. The automatic water level monitoring and drainage device for a precipitation well according to claim 1, characterized in that: A guide plate is provided inside the dewatering well for guiding the lifting and lowering of the early warning rod.

9. The automatic water level monitoring and drainage device for a precipitation well according to claim 8, characterized in that: The guide plate is arranged parallel to the fixed plate, and both sides of the guide plate are connected to the fixed plate through long strips. A second hole for the warning rod to pass through is provided on the guide plate, and the second hole is arranged coaxially with the hole.

10. The automatic water level monitoring and drainage device for a precipitation well according to claim 1, characterized in that: It also includes a water collection well arranged outside the precipitation well, and the water pump is connected to the water collection well through a drainage pipe.

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