Water level height control device of dewatering well

Abstract

The utility model discloses a dewatering well water level height control device which comprises a foundation pit, a dewatering well is arranged in the foundation pit, a drainage pipe is arranged in the dewatering well, and the bottom end of the drainage pipe is connected with a water pump. A water level sensing device is arranged at the bottom of the drainage pipe, an electric box is arranged above the foundation pit, and the water level sensing device is connected with the electric box. By the adoption of the water level height control device for the dewatering well, dewatering automation is achieved, the dewatering effect is good, and safety of the water level height is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of foundation pit drainage construction, and specifically relates to a water level height control device for a precipitation well. Background Art

[0002] With the rapid advancement of urbanization, ground construction has gradually turned to underground projects. The scale and depth of foundation pit excavation have continued to expand, and foundation pit dewatering is also facing huge challenges. At present, the foundation pit dewatering wells are basically started manually, and it is necessary to record the water level from time to time to start or close the dewatering wells, which will greatly increase labor costs and increase the probability of damage to dewatering components, which will lead to water gushing in the foundation pit, causing resource cost losses and safety issues.

[0003] The utility model patent with announcement number CN207649717U was published on July 24, 2018. It is named as a precipitation well water level warning device. The precipitation well water level warning device includes a monitoring host, a power supply device and multiple sensors. The monitoring host is arranged outside the precipitation well, and multiple sensors are respectively installed on the inner wall of the precipitation well. The power supply device is electrically connected to the monitoring host. The monitoring host is equipped with an audible and visual alarm. The monitoring host is equipped with a control circuit board inside. The control circuit board is equipped with a control chip, a sensor signal collector, a memory and a pump controller. The precipitation well water level warning device cannot realize precipitation automation, nor can it ensure that the water level is at a safe height. Utility Model Content

[0004] The utility model aims to provide a water level control device for a precipitation well, which can realize automatic precipitation, have good precipitation effect and ensure the safety of water level height, in view of the shortcomings of the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The device for controlling the water level height of a precipitation well comprises a foundation pit, wherein a precipitation well is arranged in the foundation pit, wherein a drainage pipe is arranged in the precipitation well, and a water pump is connected to the bottom end of the drainage pipe; a water level sensing device is arranged at the bottom of the drainage pipe, and an electric box is arranged above the foundation pit, and the water level sensing device is connected to the electric box.

[0007] The water level sensing device includes a sleeve, an opening is provided at the bottom end of the sleeve, a floating plate is also provided in the sleeve, a force transmission rod is connected to the middle part of the upper end of the floating plate, a first conductive block is provided in the sleeve, a gap is provided between the first conductive blocks, the first conductive blocks are connected to the electrical box, a second conductive block is provided at the top end of the force transmission rod, the second conductive block is located below the gap, and the width of the second conductive block is greater than the width of the gap.

[0008] A limit block is also provided in the sleeve, the force transmission rod passes through the limit block, and the limit block is located between the first conductive block and the floating plate.

[0009] A throat hoop is provided on the side of the sleeve, and the sleeve is fixed on the drain pipe through the throat hoop, and the throat hoop is arranged in pairs.

[0010] The foundation pit comprises a base, and the sleeve is located below the base.

[0011] The floating plate is matched with the sleeve.

[0012] The sleeve and the force transmission rod are both insulating structures, and the throat clamp is a stainless steel structure.

[0013] The top end of the drainage pipe is an L-shaped structure.

[0014] The technical effect of the utility model is as follows: by adopting the water level height control device of the precipitation well of the utility model, a water level sensing device is added at the bottom of the drainage pipe. The water level sensing device has a simple structure and a reasonable design, and can monitor the water level height in the well at all times. When the water level in the precipitation well rises to reach the minimum water level requirement of the established foundation pit excavation height, the water level sensing device can connect the circuit, and the precipitation component can continue to operate until the water level reaches the safe design height. The drop in the water level in the well causes the switch sensor line to form a short circuit, thereby achieving the effect of timely closing the precipitation component, avoiding damage to the equipment due to long-term idling of the component, streamlining the frequency of manual precipitation, realizing automatic precipitation, reducing human resource costs and mechanical losses and increasing precipitation effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This specification includes the following drawings, which show the following contents:

[0016] Figure 1 It is a structural schematic diagram of the water level height control device of the precipitation well of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the water level sensing device of the utility model;

[0018] Figure 3 It is the work flow chart of the utility model.

[0019] The markings in the figure are: 1. sleeve; 2. throat clamp; 3. floating plate; 4. force transmission rod; 5. first conductive block; 6. second conductive block; 7. gap; 8. limit block; 9. opening. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation methods of the utility model by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating its implementation.

[0021] like Figures 1 to 3 As shown, the water level control device for the precipitation well comprises a foundation pit, a precipitation well is arranged in the foundation pit, a drainage pipe is arranged in the precipitation well, a water pump is connected to the bottom end of the drainage pipe; a water level sensing device is arranged at the bottom of the drainage pipe, an electric box is arranged above the foundation pit, and the water level sensing device is connected to the electric box.

[0022] The device mainly includes a precipitation component, a water level sensing device and an electrical box. The precipitation component and the water level sensing device are both placed in the precipitation well. The water level sensing device and the precipitation component are connected through an external electrical box, and the well is locked by a throat clamp 2. The water pump and the drain pipe constitute the precipitation component of the device. The precipitation component, the electrical box, and the water level sensing device are connected through the switch sensor line. The working principle of the device is as follows: the floating plate 3 is moved upward by the buoyancy generated by the rising water level, and the conductive block is connected to the switch sensor line through the force transmission rod 4 to form a closed path. When the water level rises to cause the circuit to close, the water pump enters the working state and lowers the water level to a safe height through the drain pipe until the circuit is disconnected. After the precipitation component lowers the water level to a safe height, it drops due to the gravity of the second conductive block 6, the force transmission rod 4 and the floating plate 3, and then the conductive block is disconnected from the switch sensor line, and the precipitation component stops running.

[0023] like Figure 2 As shown, the water level sensing device includes a sleeve 1, an opening 9 is provided at the bottom end of the sleeve 1, a floating plate 3 is also provided in the sleeve 1, a force transmission rod 4 is connected to the middle part of the upper end of the floating plate 3, a first conductive block 5 is provided in the sleeve 1, a gap 7 is provided between the first conductive blocks 5, the first conductive blocks 5 are connected to the electrical box, a second conductive block 6 is provided at the top end of the force transmission rod 4, the second conductive block 6 is located below the gap 7, and the width of the second conductive block 6 is greater than the width of the gap 7. The float 3 is located at the bottom open end of the sleeve 1. The float 3 is an insulating lightweight material. When the water level is higher than the bottom of the sleeve 1, the float 3 floats on the water surface, so it can float up or down according to the change of the water level. The gap 7 is used to form a circuit breaker at the first conductive block 5. Since the second conductive block 6 is wider than the gap 7 between the first conductive blocks 5, the movement of the float 3 drives the force transmission rod 4 until the second conductive block 6 contacts the first conductive block 5. The conductive block is connected to the switch sensing line to form a closed path, and the electrical box controls the precipitation component to run and drain water; if the second conductive block 6 does not contact the first conductive block 5, the conductive block is disconnected from the switch sensing line, and the precipitation component stops running.

[0024] like Figure 2 As shown, a limit block 8 is also provided in the sleeve 1, and the force transmission rod 4 passes through the limit block 8, and the limit block 8 is located between the first conductive block 5 and the floating plate 3. The limit block 8 prevents the water level in the precipitation well from rising sharply and causing the water level sensing device to be damaged by the huge buoyancy, ensuring that the water level sensor is in a normal sensing state. The limit block 8 allows the force transmission rod 4 to pass through and prevents the floating plate 3 from moving further upward. When the floating plate 3 abuts the limit block 8, the floating plate 3 reaches its highest height.

[0025] like Figure 1 and Figure 2 As shown, a throat clamp 2 is provided on the side of the sleeve 1, and the sleeve 1 is fixed to the drain pipe through the throat clamp 2, and the throat clamp 2 is arranged in pairs. Since the precipitation component and the water level sensing device are arranged in the well, in order to prevent the water level sensing device from floating up due to rising water level or falling into the bottom of the well due to damage, a double stainless steel throat clamp 2 is used to firmly connect it with the hard drain pipe. The throat clamp 2 arranged in pairs ensures that the sleeve 1 is installed in an accurate position, the floating plate 3 rises and falls accurately with the water level, and the horizontal sensing function is reliable.

[0026] like Figure 1 As shown, the foundation pit includes a base, and the sleeve 1 is located below the base. The throat clamp 2 locks the sleeve 1 to one side of the bottom of the drain pipe. The locking position of the sleeve 1 is based on the lowest sensing point of the water level sensing device reaching the safe water level of the foundation pit. The water level in the precipitation well is fed back to the water level sensing device to determine the working state of the precipitation well, and the water is timely reduced by the water pump, thereby ensuring that the water level in the foundation pit is always at a safe water level. The water level will not be higher than the highest position of the floating plate 3, and will not affect the base structure, which can reduce resource cost loss and improve the safety of the foundation pit structure.

[0027] like Figure 2 As shown, the floating plate 3 is matched with the sleeve 1. The floating plate 3 is closely matched with the inner wall of the sleeve 1 to form a reliable sealing effect, preventing water from entering the interior of the sleeve 1 and avoiding damage to the internal components of the sleeve 1.

[0028] The sleeve 1 and the force transmission rod 4 are both insulating structures, and the throat clamp 2 is a stainless steel structure. The insulating structure is used to prevent the sleeve 1 and the force transmission rod 4 from affecting the current conduction of the conductive block. Since the throat clamp 2 will contact water, the throat clamp 2 made of stainless steel can avoid rust damage, ensuring the long-term reliable operation of the water level sensing device.

[0029] like Figure 1 As shown, the top of the drain pipe is an L-shaped structure. The above structure is convenient for draining water in the foundation pit and diverting the water to other locations.

[0030] The device operation method specifically includes the following steps:

[0031] Step 1: According to the depth of the dewatering well and the predetermined height of the safe water level of each layer of the foundation pit, the water level sensing device is firmly connected to the hard drainage pipe at the corresponding height, and the sliding state inside the water level sensing device is checked;

[0032] Step 2: Slowly place the precipitation component and the water level sensing device into the well, and turn on the power supply after reaching the specified height;

[0033] Step 3: When the water level exceeds the safe water level, the precipitation component starts to operate;

[0034] Step 4: The precipitation component continues to work until the safe water level is reached, the water level sensor starts to slide down, and the precipitation component stops working.

[0035] The water level height control device of the precipitation well adds a water level sensing device at the bottom of the drainage pipe. The water level sensing device has a simple structure and a reasonable design, and can monitor the water level in the well at all times. When the water level in the precipitation well rises to reach the minimum water level requirement for the established foundation pit excavation height, the water level sensing device can connect the circuit, and the precipitation component can continue to operate until the water level reaches the safe design height. The drop in the water level in the well causes the switch sensor line to be open-circuited, thereby achieving the effect of timely closing the precipitation component, avoiding damage to the equipment due to long-term idling of the component, streamlining the frequency of manual precipitation, realizing automatic precipitation, reducing human resource costs and mechanical losses, and increasing precipitation effectiveness.

[0036] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A water level control device for a precipitation well, characterized in that: It comprises a foundation pit, wherein a precipitation well is arranged in the foundation pit, wherein a drainage pipe is arranged in the precipitation well, wherein the bottom end of the drainage pipe is connected with a water pump; a water level sensing device is arranged at the bottom of the drainage pipe, an electric box is arranged above the foundation pit, and the water level sensing device is connected with the electric box.

2. The water level control device for a precipitation well according to claim 1, characterized in that: The water level sensing device comprises a sleeve (1), the bottom end of the sleeve (1) is provided with an opening (9), a floating plate (3) is further provided in the sleeve (1), the middle part of the upper end of the floating plate (3) is connected with a force transmission rod (4), a first conductive block (5) is provided in the sleeve (1), a gap (7) is provided between the first conductive blocks (5), the first conductive blocks (5) are connected to an electrical box, a second conductive block (6) is provided at the top end of the force transmission rod (4), the second conductive block (6) is located below the gap (7), and the width of the second conductive block (6) is greater than the width of the gap (7).

3. The water level control device for a precipitation well according to claim 2, characterized in that: A limit block (8) is also provided in the sleeve (1), the force transmission rod (4) passes through the limit block (8), and the limit block (8) is located between the first conductive block (5) and the floating plate (3).

4. The water level control device for a precipitation well according to claim 2 or 3, characterized in that: A throat clamp (2) is provided on the side of the sleeve (1), and the sleeve (1) is fixed on the drainage pipe through the throat clamp (2). The throat clamp (2) is arranged in pairs.

5. The water level control device for a precipitation well according to claim 4, characterized in that: The foundation pit comprises a base, and the sleeve (1) is located below the base.

6. The water level control device for a precipitation well according to claim 2, characterized in that: The floating plate (3) is matched with the sleeve (1).

7. The water level control device for a precipitation well according to claim 5, characterized in that: The sleeve (1) and the force transmission rod (4) are both insulating structures, and the throat clamp (2) is a stainless steel structure.

8. The water level control device for a precipitation well according to claim 1, characterized in that: The top end of the drainage pipe is an L-shaped structure.

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