A precipitation well water collecting and draining device and a control method thereof

Abstract

The application provides a water collecting and discharging device for a dewatering well and a control method thereof. The water collecting and discharging device comprises a water tank, a water inlet pipe connected with the top of the water tank, an air pipe, a water outlet pipe connected with the bottom of the water tank, the air pipe is connected with a blowing device and a suction device through a three-way valve, the blowing device and the suction device are connected with a control device, the control device is used for controlling the working state of the blowing device and the suction device, a first one-way valve is arranged in the water inlet pipe and is controlled by the air pressure in the water tank and can only be opened in the direction that water in the water inlet pipe flows to the water tank, and a second one-way valve is arranged in the water outlet pipe and is controlled by the air pressure in the water tank and can only be opened in the direction that water in the water tank flows out from the water outlet pipe. The water in the dewatering well can be quickly discharged by adopting the technical scheme.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of construction engineering, and in particular to a dewatering well water collecting and draining device and a control method thereof. BACKGROUND

[0002] At present, the underground projects such as expressway tunnels, subways and underground pipe networks are increasing in China, and these projects inevitably pass through the sections with complex hydrogeological conditions. Before the underground projects are constructed, the seepage field of underground water is in a dynamic balance state. With the excavation of the underground projects and the formation of the free surface, the underground water converges and seeps to the free surface to form the seepage of the excavation surface of the underground project. If effective water collecting and draining measures are not taken, the seepage of the rock surface cracks is drained to the drainage ditch of the underground project, the seepage is gathered behind the supporting lining wall, the water pressure is increased, the supporting structure is damaged, the service life of the project structure is greatly reduced, and the underground project is constructed under the condition of large-area seepage of the supporting and waterproof construction, so that the construction quality cannot be guaranteed and the underground project is prone to seepage in the operation process.

[0003] At present, the dewatering wells arranged at certain intervals are usually used for dewatering in the industry, the underground water is introduced into the dewatering well, and then the water in the dewatering well is pumped out by a water pump. However, due to the limited lift of the water pump, deep well pumping cannot be performed. SUMMARY

[0004] The present application aims to provide an underground project water collecting and draining device, so as to improve the water collecting and draining speed of the underground water of the underground project.

[0005] In the present application, a dewatering well water collecting and draining device is provided, which comprises a water tank, a water inlet pipe connected with the top of the water tank, an air pipe, a water outlet pipe connected with the bottom of the water tank, the air pipe is connected with a blowing device and a suction device through a three-way valve respectively, the blowing device and the suction device are connected with a control device respectively, the control device is used for controlling the working state of the blowing device and the suction device, a first one-way valve is arranged in the water inlet pipe and controlled by the air pressure in the water tank and can only be opened in the direction that the water in the water inlet pipe flows to the water tank, and a second one-way valve is arranged in the water outlet pipe and controlled by the air pressure in the water tank and can only be opened in the direction that the water in the water tank flows out of the water outlet pipe.

[0006] In the present application, the dewatering well water collecting and draining device further comprises an air pressure monitoring device arranged in the air pipe, the air pressure monitoring device is used for detecting the air pressure in the water tank and sending the detected air pressure to the control device, and the control device is used for controlling the working state of the blowing device and the suction device according to the change of the air pressure.

[0007] In the embodiment of the present application, the control device controls the air suction device to start working, sucks air from the water tank in a set working time, then controls the air suction device to stop working, and controls the air blowing device to start working, when the air blowing device pressurizes the water tank, the air pressure in the water tank gradually increases, when the air pressure in the water tank suddenly decreases, it is judged that the air blowing device completes the drainage, the control device controls the air blowing device to stop working, and controls the air suction device to start working.

[0008] In the embodiment of the present application, the set working time of the air suction device is calculated by the following method:

[0009] The air suction device sucks air, the water inlet pipe supplies water to the water tank, the air blowing device blows air to discharge water in the water tank, as an air suction and air blowing cycle, set an air suction time in the initial cycle, then increase the air suction time of the air suction device in each cycle, and record the working time of the air blowing device to complete the drainage, when the working time of the air blowing device to complete the drainage is no longer increased in the next air suction and air blowing cycle, the air suction time in the last air suction and air blowing cycle is taken as the set working time of the air suction device.

[0010] In the embodiment of the present application, the air suction device adopts an air pump.

[0011] In the embodiment of the present application, the air blowing device adopts a booster pump.

[0012] In the embodiment of the present application, a control method of the above-mentioned water collecting and draining device of a precipitation well is also provided, characterized in that, comprising:

[0013] The air suction device sucks air, the water inlet pipe supplies water to the water tank, the air blowing device blows air to discharge water in the water tank, as an air suction and air blowing cycle, set an air suction time in the initial cycle, then increase the air suction time of the air suction device in each cycle, and record the working time of the air blowing device to complete the drainage, when the working time of the air blowing device to complete the drainage is no longer increased in the next air suction and air blowing cycle, the air suction time in the last air suction and air blowing cycle is taken as the set working time of the air suction device.

[0014] In the embodiment of the present application, when the air blowing device pressurizes the water tank, the air pressure in the water tank gradually increases, until the air pressure in the water tank suddenly decreases, then it is judged that the air blowing device completes the drainage.

[0015] Compared with the prior art, the water collecting and draining device for a dewatering well and the control method thereof have the advantages that the water in the dewatering well is sucked into the water tank and the water in the water tank is drained out by using air suction and air blowing in the water tank, only the air suction device and the air blowing device need to be controlled, a water pump is not needed, the water in the deep well can be drained out, the control process is simple, and the working efficiency of the water collecting and draining device for a dewatering well is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the water collecting and draining device for a dewatering well in the embodiment of the present application. DETAILED DESCRIPTION

[0017] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0018] The implementation of the present application is described in detail below with reference to specific embodiments.

[0019] As shown in Figure 1 the embodiment of the present application, a water collecting and draining device for a dewatering well is provided, which comprises a water tank 1, a water inlet pipe 2 connected to the top of the water tank 1, an air pipe 3, and a water outlet pipe 4 connected to the bottom of the water tank 1. The air pipe 3 is connected to an air blowing device 6 and an air suction device 7 through a three-way valve 5. The air blowing device 6 and the air suction device 7 are connected to a control device 8, and the control device 8 is used to control the working states of the air blowing device 6 and the air suction device 7. The water inlet pipe 2 is connected between the water tank 1 and a dewatering well 20. A first one-way valve 9 is arranged in the water inlet pipe 2, the first one-way valve 9 is controlled by the air pressure in the water tank 1, and can only be opened in the direction in which the water in the water inlet pipe 2 flows into the water tank 1. A second one-way valve 10 is arranged in the water outlet pipe 4, the second one-way valve 10 is controlled by the air pressure in the water tank 1, and can only be opened in the direction in which the water in the water tank 1 flows out of the water outlet pipe 4. In the embodiment, the air suction device 6 is an air pump. The air blowing device 7 is a booster pump.

[0020] The air pipe 3 is also provided with an air pressure monitoring device 11, the air pressure monitoring device 11 is used to detect the air pressure in the water tank 1 and send the detected air pressure to the control device 8. The control device 8 is used to control the working states of the air blowing device 6 and the air suction device 7 according to the change of the air pressure, and the control process is as follows:

[0021] Firstly, the control device 8 controls the air suction device 7 to start working, the air suction device 7 sucks air from the water tank 1 in a set working time, the air pressure in the water tank 1 is reduced, the first one-way valve 9 is opened, the second one-way valve 10 is closed, water flows into the water tank 1 from the water inlet pipe 2, and the water level rises to a certain height.

[0022] Then, the control device 8 controls the air suction device 7 to stop working, and controls the air blowing device 6 to start working, when the air blowing device 6 blows air into the water tank 1, the air pressure in the water tank 1 gradually increases, the first one-way valve 9 is closed, the second one-way valve 10 is opened, and the water in the water tank 1 is discharged through the drain pipe 4 under the action of air pressure, when the water level in the water tank 1 is lower than the communication port of the drain pipe 4 and the water tank 1, the air pressure in the water tank 1 suddenly decreases, at this time, it can be judged that the air blowing device 6 completes the drainage, the control device 8 controls the air blowing device 6 to stop working, and controls the air suction device 7 to start working.

[0023] The control device 8 controls the air blowing device 6 and the air suction device 7 to work alternately to drain water.

[0024] Specifically, the set working time of the air suction device is calculated by the following method:

[0025] The air suction device 7 sucks air, the water inlet pipe 2 supplies water to the water tank 1, the air blowing device 6 blows air to discharge water in the water tank 1, as an air suction and air blowing cycle, set an air suction time in the initial cycle, then increase the air suction time of the air suction device 7 in each cycle, and record the working time of the air blowing device 6 to complete the drainage, when the working time of the air blowing device 6 to complete the drainage is no longer increased in the next air suction and air blowing cycle, the air suction time in the last air suction and air blowing cycle is taken as the set working time of the air suction device 7. Through the above calculation method, the set working time of the air suction device 7 obtained is the time required for the water tank to store water when the air suction device 7 works.

[0026] In summary, the water collecting and draining device of the dewatering well and the control method thereof can suck water from the dewatering well into the water tank and discharge water in the water tank by circulating air suction and pressure reduction and air blowing and pressure increase in the water tank, only the air suction device and the air blowing device need to be controlled, a water pump is not needed, water in the deep well can be discharged, the control process is simple, the control method can automatically calculate the time for the water tank to store water, so as to obtain the working time of the air suction device, and the working efficiency of the water collecting and draining device of the dewatering well is improved.

[0027] The above merely describes preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A precipitation well catchment drainage device, characterized by, The invention comprises a water tank, a water inlet pipe connected to the top of the water tank, an air pipe, and a drain pipe connected to the bottom of the water tank. The air pipe is connected to a blowing device and an air suction device respectively through a three-way valve. The blowing device and the air suction device are respectively connected to a control device. The control device is used to control the working state of the blowing device and the air suction device. The water inlet pipe is provided with a first one-way valve controlled by the air pressure in the water tank and can only be opened in the direction of water in the water inlet pipe flowing toward the water tank. The drain pipe is provided with a one-way valve controlled by the air pressure in the water tank. The second one-way valve can only be opened when the water in the water tank flows out of the drain pipe. The control device controls the suction device to start working, sucks air from the water tank within a set working time, and then controls the suction device to stop working and controls the blowing device to start working. When the blowing device pressurizes the water tank, the air pressure in the water tank gradually increases. When the air pressure in the water tank suddenly decreases, it is determined that the blowing device has completed drainage. The control device controls the blowing device to stop working and controls the suction device to start working. The set working time of the suction device is calculated as follows: The suction device is operated to suck air, the water inlet pipe is operated to feed water into the water tank, and the blowing device is operated to blow air to discharge the water in the water tank. This is regarded as a suction and blowing cycle. An suction time is set in the initial cycle, and then the suction time of the suction device is increased in each cycle, and the working time of the blowing device to complete drainage is recorded. When the working time of the blowing device to complete drainage no longer increases in the next suction and blowing cycle, the suction time in the previous suction and blowing cycle is used as the set working time of the suction device.

2. The precipitation well catch basin drain of claim 1, wherein, It also includes an air pressure monitoring device arranged in the air pipe, which is used to detect the air pressure in the water tank and send the detected air pressure to the control device. The control device is used to control the working status of the blowing device and the suction device according to the change of the air pressure.

3. The precipitation well catch basin drain of claim 1, wherein, The air suction device adopts an air pump.

4. The precipitation well catch basin drain of claim 1, wherein, The air blowing device adopts a booster pump.

5. A method of controlling a water-collecting and discharging device of a precipitation well according to claim 1, characterized by, include: The air suction device sucks air, the water inlet pipe feeds water into the water tank, and the air is blown to the air blowing device to discharge the water in the water tank, which is a suction and blowing cycle; Setting an air suction time in the initial cycle, then increasing the air suction time of the air suction device in each cycle, and recording the working time of the air blowing device to complete drainage; When the working time of the air blowing device to complete drainage no longer increases in the next air suction and blowing cycle, the air suction time in the previous air suction and blowing cycle is used as the set working time of the air suction device.

6. A method of controlling a water-collecting and discharging device of a precipitation well according to claim 5, characterized by, When the air blowing device adds pressure to the water tank, the air pressure in the water tank gradually increases until the air pressure in the water tank suddenly decreases, and then it is determined that the air blowing device has completed drainage.

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