CN211571759U - Building foundation pit dewatering device - Google Patents

Abstract

The utility model relates to a dewatering device for a building foundation pit, comprising a drainage well, a first communication pipe connecting the drainage well and the building foundation pit, the first communication pipe being horizontally arranged and connecting the building foundation pit and the drainage well; the drainage well There is an equipment well between the building foundation pit, the equipment well is provided with a first drainage pump, the inlet and outlet of the drainage pump are respectively provided with a second communication pipe and a third communication pipe, and the second communication pipe communicates with each other. The foundation pit is built, and the third communication pipe is connected to the drainage well; a drainage pipe is arranged on the outer side of the drainage well, and a second drainage pump is arranged on the drainage pipe. In the utility model, when there is water in the building foundation pit, the first drainage pump is turned on in time to drain the water to avoid excessive water volume; in the rainy season, the groundwater level is relatively high, and the first communication pipeline is connected between the drainage well and the building foundation pit, and the water level is high in the rainy season. To discharge a large amount of water, the first communication pipe cooperates with the second communication pipe to discharge a large amount of water.

Description

A construction foundation pit dewatering device

technical field

The utility model belongs to the technical field of construction, in particular to a dewatering device for a building foundation pit.

Background technique

Building foundation pit dewatering means that when the building foundation pit is excavated, the groundwater level is higher than the excavation bottom surface, and the groundwater will continue to seep into the pit. Precipitation work for bottom uplift, pit bottom piping and the decrease of foundation bearing capacity. At present, with the continuous development of urban underground space, there are more and more deep building foundation pit projects, the excavation area is getting larger and the excavation depth is getting deeper and deeper, in this context, the vacuum pump dewatering equipment due to its own The defect cannot meet the requirements of deep building foundation pit precipitation. Although the submersible pump meets the technical requirements of precipitation, the resource utilization rate is low.

At present, the precipitation of the project is generally long due to the long precipitation period of the project, and it requires uninterrupted precipitation day and night. During the rainy season, the groundwater level is extremely easy to exceed the control water level, resulting in water gushing in the slope, foundation post-cast belt or floating accident of the main structure.

Utility model content

In order to solve the above-mentioned problems, the purpose of this utility model is to provide a kind of dewatering device for building foundation pit, when there is water in the building foundation pit, the first drainage pump is opened in time for drainage, so as to avoid excessive water volume, and during the rainy season, the groundwater level is relatively high. , the first communication pipe is connected between the drainage well and the building foundation pit to discharge a large amount of water in time, and the first communication pipe cooperates with the second communication pipe to discharge a large amount of water.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is: a dewatering device for a building foundation pit, which is characterized in that it comprises a drainage well, a first communication pipe connecting the drainage well and the building foundation pit, and the first communication pipe is horizontal A construction foundation pit and a drainage well are arranged and connected; an equipment well is arranged between the drainage well and the construction foundation pit, a first drainage pump is arranged in the equipment well, and a second connection is respectively arranged at the inlet and outlet of the drainage pump A pipeline and a third communication pipeline, the second communication pipeline is connected to the building foundation pit, and the third communication pipeline is connected to a drainage well; a drainage pipe is arranged on the outside of the drainage well, and a second drainage pump is arranged on the drainage pipe .

Wherein, a filter screen is provided at the inlet of the second communication pipe, a filter screen is provided at one end of the construction foundation pit of the first communication pipe, and the second communication pipe is provided at the lowest end position of the construction foundation pit.

Wherein, the construction foundation pit is provided with a first water level sensor, the first water level sensor detects whether the water level is low to the bottom of the construction foundation pit to stop and start the operation of the first drainage pump, when the first water level sensor detects that the construction foundation pit has When the water is in, turn on the first drain pump.

Preferably, the height of the second communication pipe and the third communication pipe is lower than that of the first communication pipe.

Preferably, the depth of the drainage well is lower than the depth of the construction foundation pit.

Wherein, the second communication pipe is arranged in a zigzag structure.

Wherein, a one-way water valve is arranged on the second communication pipe.

Wherein, the upper end of the equipment well can be opened and closed with a well cover.

Wherein, the drainage well is provided with a second water level sensor and a third water level sensor, the second water level sensor detects whether the water level is higher than the set value of the water level in the drainage well, so as to start the operation of the second drainage pump; the third water level sensor detects the water level Whether or not the drain pipe is in the lower port position to stop the second drain pump from running.

Compared with the prior art, the utility model has the following beneficial effects: the utility model is provided with a first communication pipe, a second communication pipe, a first drainage pump, a third communication pipe, a drainage well, a drainage pipe and a second drainage Pump, when there is water in the building foundation pit, turn on the first drainage pump in time to drain the water to avoid excessive water. For water discharge, the first communication pipe cooperates with the second communication pipe, which can discharge a large amount of water. At the same time, the second drainage pump discharges the water in the drainage well in time, and the multi-stage drainage pump conducts drainage, which solves the defects of the current vacuum pump dewatering equipment due to its own defects. It cannot meet the problem of precipitation in deep building foundation pits.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

Description of reference numerals: 1. Construction foundation pit; 2. Drainage well; 3. First communication pipeline; 4. Equipment well; 5. First drainage pump; 6. Second communication pipeline; 7. Third communication pipeline; 8 10, the first water level sensor; 11, the one-way water valve; 12, the well cover; 13, the second water level sensor; 14, the third water level sensor.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

Please refer to the accompanying drawing 1 of the description, the utility model is a construction foundation pit dewatering device, comprising a drainage well 2, a first communication pipe 3 connecting the drainage well 2 and the construction foundation pit 1, and the first communication pipe 3 is horizontal The construction foundation pit 1 and the drainage well 2 are arranged and connected, an equipment well 4 is arranged between the drainage well 2 and the construction foundation pit 1, and a first drainage pump 5 is arranged in the equipment well 4. The entrance and exit are respectively provided with a second communication pipe 6 and a third communication pipe 7, the second communication pipe 6 is connected with the construction foundation pit 1, and the third communication pipe 7 is connected with the drainage well 2, the outer side of the drainage well 2 A drain pipe 8 is provided, and a second drain pump 9 is provided on the drain pipe 8 .

The inlet of the second communication pipe 6 is provided with a filter screen, the first communication pipe 3 is provided with a filter screen at one end of the construction foundation pit 1, and the second communication pipe 6 is arranged at the lowest end position of the construction foundation pit 1. ; The inlet end of the first communication pipe 3 and the second communication pipe 6 is provided with a filter screen, which can effectively prevent the pipe from being blocked.

The construction foundation pit 1 is provided with a first water level sensor 10. The first water level sensor 10 detects whether the water level is low to the bottom of the construction foundation pit 1 to stop and start the first drainage pump 5. When the first water level sensor 10 detects When the building foundation pit 1 has internal water, the first drainage pump 5 is turned on. The utility model monitors the water level in the building foundation pit 1 through the first water level sensor 10, and can control the opening and closing of the first drainage pump 5 in combination with external control equipment. On the one hand, it can prevent the pump not being pumped in time and cause the accident of burning the pump.

The height of the second communication pipe 6 and the third communication pipe 7 is lower than that of the first communication pipe, so that one layer of drainage of the first communication pipe 3 is realized, and the second communication pipe 6 and the third communication pipe 7 form a second layer of drainage.

The depth of the drainage well 2 is lower than the depth of the building foundation pit, so as to realize multi-stage drainage pump drainage and avoid the problem of deep pit drainage.

The second communication pipe 6 is arranged in a zigzag structure, which is convenient for the placement of the equipment well.

The second communication pipe 6 is provided with a one-way water valve 11 to prevent the water in the second communication pipe 6 from flowing back into the construction foundation pit 1.

The upper end of the equipment well 4 can be opened and closed with a well cover 12, which is convenient for equipment maintenance.

The drainage well 2 is provided with a second water level sensor 13 and a third water level sensor 14, the second water level sensor 13 detects whether the water level is higher than the set value of the water level in the drainage well 2, so as to start the second drainage pump 9 for operation; The third water level sensor 14 detects whether the water level is at the lower port position of the drain pipe to stop the operation of the second drain pump 9 . The second water level sensor 13 and the third water level sensor 14 of the present invention can be used together to turn on the second drainage pump 9 in time, and at the same time, it can prevent the second drainage pump 9 from not stopping pumping water in time, resulting in a pump burning accident.

The working principle of the utility model is as follows: when there is water in the building foundation pit 1 (the first water level sensor 13 detects that there is water in the building foundation pit 1), the first drainage pump 5 is turned on in time for drainage to avoid excessive water volume. During the rainy season, the groundwater level is high, and when the first drainage pump 5 alone cannot drain water in time, the first communication pipe 3 is connected between the drainage well 2 and the building foundation pit 1, and a large amount of water is discharged in time. The second communication pipe 6 and the first drainage pump 5 are used together to discharge a large amount of water in the construction foundation pit 1; if there is no water in the construction foundation pit 1 (the first water level sensor 13 detects that there is no water in the construction foundation pit 1), The first drainage pump 5 stops working; at the same time, when the water level in the drainage well 2 exceeds the set water level (the second water level sensor 13 detects that the water level reaches the set value), the second drainage pump 9 is turned on to drain the water in the drainage well 2 in time. Water is discharged. When the water level in the drainage well 2 is lower than the set value (the third water level sensor 14 detects that the water level is lower than the set value), the second drainage pump 9 stops drainage, and uses a multi-stage drainage pump for drainage.

The construction foundation pit dewatering device of the utility model is provided with a first communication pipe, a second communication pipe, a first drainage pump, a third communication pipe, a drainage well, a drainage pipe and a second drainage pump. When there is water in the building foundation pit , Turn on the first drainage pump in time for drainage to avoid excessive water volume. In the rainy season, the groundwater level is high. The first communication pipeline is connected between the drainage well and the building foundation pit, and a large amount of water is discharged in time. The first communication pipeline and The second communication pipe cooperates to discharge a large amount of water. At the same time, the second drainage pump discharges the water in the drainage well in time, and the multi-stage drainage pump conducts drainage, which solves the problem that the current vacuum pump dewatering equipment cannot meet the needs of deep building foundation pit dewatering due to its own defects. question.

It should be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. without more restrictions. An element defined by the statement "comprising an... does not preclude the presence of additional identical elements in the process, method, article or apparatus comprising the element".

The above specific embodiments are only preferred embodiments of this creation, and are not intended to limit this creation. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this creation shall be included in this creation. within the scope of protection.

Claims (9)

1. a construction foundation pit dewatering device, is characterized in that, comprises drainage well, the first communication pipeline connecting drainage well and construction foundation pit, described first communication pipeline is horizontally arranged and communicates construction foundation pit and drainage well; Described An equipment well is arranged between the drainage well and the building foundation pit, the equipment well is provided with a first drainage pump, and the inlet and outlet of the drainage pump are respectively provided with a second communication pipe and a third communication pipe, the second communication pipe The pipeline communicates with the building foundation pit, and the third communication pipeline communicates with the drainage well; a drainage pipe is arranged on the outside of the drainage well, and a second drainage pump is arranged on the drainage pipe. 2. The construction foundation pit dewatering device according to claim 1, wherein a filter screen is provided at the entrance of the second communication pipe, and a filter screen is provided at one end of the construction foundation pit of the first communication pipe, so The second communication pipeline is arranged at the lowest position of the construction foundation pit. 3 . The dewatering device for a building foundation pit according to claim 1 , wherein a first water level sensor is arranged in the building foundation pit. 4 . 4 . The dewatering device for building foundation pits according to claim 1 , wherein the height of the second communication pipe and the third communication pipe is lower than that of the first communication pipe. 5 . 5 . The dewatering device for a building foundation pit according to claim 1 , wherein the depth of the drainage well is lower than that of the building foundation pit. 6 . 6 . The dewatering device for building foundation pits according to claim 1 , wherein the second communication pipe is arranged in a zigzag structure. 7 . 7 . The dewatering device for building foundation pits according to claim 1 , wherein a one-way water valve is provided on the second communication pipe. 8 . 8 . The dewatering device for building foundation pits according to claim 1 , wherein a manhole cover can be opened and closed at the upper end of the equipment well. 9 . 9 . The dewatering device for building foundation pits according to claim 1 , wherein the drainage well is provided with a second water level sensor and a third water level sensor. 10 .

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