Dust falling equipment and dust falling method for foundation pit construction

Abstract

The invention discloses dust falling equipment for foundation pit construction and a dust falling method.The dust falling equipment comprises a foundation pit air film and a plurality of dust falling assemblies, the foundation pit air film is used for covering a foundation pit, and the dust falling assemblies are arranged on the inner side of the foundation pit air film and are sequentially arranged in the length direction of the foundation pit; the multiple groups of dust falling assemblies are used for jointly performing spraying dust falling on the foundation pit; each dust falling assembly comprises two guide rails which are symmetrically arranged on the two sides of the foundation pit. The number of the guide frames is two, and the guide frames are connected with the corresponding guide rails in a sliding mode. The spraying assembly is arranged on the two guide frames and used for spraying water mist; and the driving part is used for controlling the two guide frames to synchronously and horizontally move along the corresponding guide rails. Effective dust falling of the foundation pit construction area can be achieved, the health of constructors can be guaranteed, and the risk of environmental pollution can be reduced.

Description

Technical Field

[0001] This invention relates to the field of dust suppression in foundation pit construction, and particularly to a dust suppression device and method for foundation pit construction. Background Technology

[0002] Foundation pit construction is a crucial part of building engineering. It is mainly used for the construction of underground structures (such as basements, underground garages, subway stations, equipment foundations, etc.). Its main task is to excavate a space with a certain depth and shape below the ground, and during construction, ensure the stability of the surrounding soil, prevent collapse, control groundwater, and ensure the safety of surrounding buildings, roads and pipelines.

[0003] During the excavation of the foundation pit, a large amount of dust pollution, especially PM (particulate matter), is easily generated due to earthwork excavation, transportation, and backfilling operations. This has a serious impact on the health of construction workers and the surrounding environment, and may also lead to exceeding environmental protection standards, which needs to be improved. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a dust suppression device and method for foundation pit construction, which can effectively suppress dust in the foundation pit construction area, ensuring the health of construction personnel and reducing the risk of environmental pollution.

[0005] In a first aspect, the present invention provides a dust suppression device for foundation pit construction, including a foundation pit air membrane and multiple sets of dust suppression components. The foundation pit air membrane is used to cover the foundation pit, and the multiple sets of dust suppression components are respectively arranged inside the foundation pit air membrane. The multiple sets of dust suppression components are arranged sequentially along the length of the foundation pit, and the multiple sets of dust suppression components are used to spray dust suppression on the foundation pit together. Each set of dust suppression components includes: Two guide rails are symmetrically arranged on both sides of the foundation pit; There are two guide frames, each slidably connected to a corresponding guide rail; A spray assembly, mounted on the two guide frames, is used to spray water mist; A drive unit is used to control the synchronous horizontal movement of the two guide frames along the corresponding guide rails.

[0006] Optionally: the driving element includes: There are two walking motors, each fixed to a corresponding guide frame; There are two traveling gears, each coaxially fixed to the output shaft of the corresponding traveling motor; There are two traveling racks, each fixed to a corresponding guide rail; The two traveling gears mesh with the corresponding traveling racks.

[0007] Optionally: the spray assembly includes: There are two support frames, each connected to a corresponding guide frame; The point spray pipe is horizontally positioned between the two guide frames, and both ends are fixedly connected to the corresponding support frame. Multiple atomizing nozzles are connected to the point spray pipes, and the multiple atomizing nozzles are arranged at equal intervals along the length of the point spray pipes. Two wide-angle spray pipes are vertically connected to their respective support frames, and the tops of the two wide-angle spray pipes are sealed. There are two sets of spray nozzles, which are respectively set on the corresponding wide-angle spray pipes. Each set of spray nozzles is arranged at equal intervals along the vertical direction. Two tee connectors are provided, each fixed to a corresponding support frame. One port of each tee connector is used to connect to an external water supply hose, and the other two ports are used to connect to the corresponding point spray pipe and the wide-angle spray pipe, respectively.

[0008] Optionally, each of the support frames is vertically slidably connected to the corresponding guide frame so that the point spray pipe can enter the foundation pit, and each of the guide frames is provided with a control component for controlling the vertical movement of the corresponding support frame.

[0009] Optionally: the control element includes: The control motor is fixed on the guide frame; The control gear is coaxially fixed to the output shaft of the control motor. The control rack is vertically fixed on the support frame and meshes with the control gear.

[0010] Optionally, the bottom of each wide-angle spray pipe is rotatably and sealed to the corresponding tee joint, and the top is rotatably and rotatably connected to the corresponding support frame. Each support frame is provided with a pipe control device for controlling the reciprocating rotation of the corresponding wide-angle spray pipe.

[0011] Optionally: the control unit includes: An electric push rod is fixed to the support frame; A control rack is fixed to the telescopic end of the electric push rod; The control gear is fixed on the wide-angle spray pipe and meshes with the control rack.

[0012] Optionally, each of the three-way connectors is provided with a three-way control valve, which is used to control the external water supply hose to connect with the corresponding point-to-point spray pipe and the wide-angle spray pipe respectively, or to control the external water supply hose to connect with the corresponding point-to-point spray pipe, or to control the external water supply hose to connect with the corresponding wide-angle spray pipe.

[0013] Secondly, the present invention provides a dust suppression method for foundation pit construction, using dust suppression equipment, comprising the following steps: S1. Before the foundation pit construction, install the foundation pit air membrane and multiple sets of dust suppression components as required. S2, dust suppression is achieved by spraying water onto the construction area of ​​the foundation pit using dust suppression components; S3. After the foundation pit construction is completed, the foundation pit air membrane and multiple dust suppression components will be disassembled separately.

[0014] Optionally: In S2, when spraying dust suppression in the foundation pit construction area, each dust suppression component can be controlled to perform wide-angle spraying, point spraying, or all-round spraying.

[0015] In summary, the present invention has the following beneficial effects: 1. Covering the foundation pit with an air-supported membrane can reduce the risk of dust escaping, protect the surrounding construction environment, and also have a good noise reduction effect, reducing the risk of disturbing residents; 2. By spraying dust suppression components onto the construction area of ​​the foundation pit, the dust suppression effect can be effectively improved, ensuring the health of construction workers and reducing the risk of environmental pollution. 3. Since the dust suppression components can perform wide-angle spraying, point spraying, or all-round spraying, construction personnel can choose the dust removal mode according to the actual situation, thus improving practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of Example 1; Figure 2 This is a schematic diagram of the dust suppression component in Example 1; Figure 3 This is a schematic diagram of the spray assembly in Example 1; Figure 4 This is a schematic diagram of the spray assembly in Example 1; Figure 5 This is a flowchart of Example 2.

[0017] Reference numerals: 1. Pit air film; 2. Dust suppression component; 21. Guide rail; 22. Guide frame; 23. Spray assembly; 231. Support frame; 232. Point-to-point spray pipe; 233. Atomizing nozzle; 234. Wide-angle spray pipe; 235. Spray nozzle; 236. T-connector; 24. Drive component; 241. Travel motor; 242. Travel gear; 243. Travel rack; 25. Control component; 251. Control motor; 252. Control gear; 253. Control rack; 26. Pipe control; 261. Electric push rod; 262. Control rack; 263. Control gear; 27. Three-way control valve. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings. Example 1

[0019] like Figures 1-4 The following is an embodiment 1 of the present invention, which discloses a dust suppression device for foundation pit construction, including a foundation pit air membrane 1 and multiple sets of dust suppression components 2. The foundation pit air membrane 1 is used to cover the foundation pit, that is, the edge of the foundation pit air membrane 1 is fixedly connected to the ground. After the foundation pit air membrane 1 is inflated, it can form a relatively closed construction environment to reduce the risk of dust escaping.

[0020] Multiple dust suppression components 2 are respectively installed inside the air membrane 1 of the foundation pit, and the multiple dust suppression components 2 are arranged sequentially along the length of the foundation pit. At the same time, the multiple dust suppression components 2 are used together to spray dust in the foundation pit to ensure the construction environment and reduce the risk of construction personnel inhaling dust.

[0021] like Figure 2 , Figure 3 , Figure 4 As shown, each dust suppression component 2 includes a guide rail 21, a guide frame 22, a spray component 23, and a drive component 24. There are two guide rails 21, which are symmetrically fixed on both sides of the pit and are arranged along the length of the pit.

[0022] There are two guide frames 22, and the bottoms of the two guide frames 22 are slidably connected to the corresponding guide rails 21. At the same time, the driving component 24 is used to control the two guide frames 22 to move horizontally synchronously along the corresponding guide rails 21. The spray assembly 23 is set on the two guide frames 22 and is used to spray water mist onto the construction area of ​​the foundation pit to achieve dust suppression.

[0023] Because the spray assembly 23 can move horizontally, it can spray dust over a larger construction area, improving dust suppression efficiency. Furthermore, since multiple spray assemblies 23 can move horizontally, this design reduces the number of dust suppression assemblies 2 required compared to fixed ones, thus lowering costs.

[0024] like Figure 2 , Figure 3 , Figure 4 As shown, the drive unit 24 includes a travel motor 241, a travel gear 242, and a travel rack 243. There are two travel motors 241, each fixed to the bottom of its corresponding guide frame 22. There are two travel gears 242, each coaxially fixed to the output shaft of its corresponding travel motor 241. There are two travel racks 243, each horizontally fixed to its corresponding guide rail 21, and each travel gear 242 meshes with its corresponding travel rack 243.

[0025] like Figure 2 , Figure 3 , Figure 4 As shown, the spray assembly 23 includes a support frame 231, a point-spray pipe 232, an atomizing nozzle 233, a wide-angle spray pipe 234, a spray nozzle 235, and a T-connector 236. There are two support frames 231, each connected to a corresponding guide frame 22. The point-spray pipe 232 is horizontally positioned between the two guide frames 22, and both ends of the point-spray pipe 232 are fixedly connected to the corresponding support frame 231.

[0026] There are multiple atomizing nozzles 233, which are connected to the point spray pipe 232 respectively. The multiple atomizing nozzles 233 are arranged at equal intervals along the length of the point spray pipe 232, and the atomizing nozzles 233 are used to spray water mist downwards to achieve good dust suppression capability.

[0027] There are two wide-angle spray pipes 234, each vertically connected to a corresponding support frame 231, and the tops of both pipes are sealed. There are two sets of spray nozzles 235, each set mounted on a corresponding wide-angle spray pipe 234. Each set has multiple nozzles arranged at equal intervals along the vertical direction. In this embodiment, the spray direction of the nozzles 235 is horizontal to increase the spray distance and thus improve the dust suppression effect.

[0028] There are two tee connectors 236. The two tee connectors 236 are fixed on the corresponding support frame 231 respectively. One interface of each tee connector 236 is used to connect to the external water supply hose, and the other two interfaces are used to connect to the corresponding point spray pipe 232 and wide-angle spray pipe 234 respectively.

[0029] like Figure 2 , Figure 3 , Figure 4As shown, each support frame 231 is vertically slidably connected to a corresponding guide frame 22, and each guide frame 22 is equipped with a control element 25 for controlling the vertical movement of the corresponding support frame 231. Because the support frame 231 can move vertically, the point-to-point spray pipe 232 and the wide-angle spray pipe 234 can also move vertically, increasing their spraying range and improving dust suppression efficiency. Simultaneously, the point-to-point spray pipe 232 can enter the pit, allowing it to spray the dust-generating areas directly, further enhancing dust suppression.

[0030] like Figure 2 , Figure 3 , Figure 4 As shown, the control component 25 includes a control motor 251, a control gear 252, and a control rack 253. The control motor 251 is fixed on the guide frame 22, the control gear 252 is coaxially fixed on the output shaft of the control motor 251, and the control rack 253 is vertically fixed on the support frame 231, and the control rack 253 meshes with the control gear 252.

[0031] like Figure 2 , Figure 3 , Figure 4 As shown, the bottom of each wide-angle spray pipe 234 is rotatably and sealingly connected to a corresponding tee connector 236, and the top of each wide-angle spray pipe 234 is rotatably connected to a corresponding support frame 231. Simultaneously, each support frame 231 is equipped with a pipe control device 26 for controlling the reciprocating rotation of the corresponding wide-angle spray pipe 234. Because the wide-angle spray pipe 234 can reciprocate along its own axis, the spray range is effectively increased, thereby improving the dust suppression effect and efficiency.

[0032] like Figure 2 , Figure 3 , Figure 4 As shown, the control unit 26 includes an electric push rod 261, a control rack 262, and a control gear 263. The electric push rod 261 is fixed on the support frame 231, the control rack 262 is fixed on the telescopic end of the electric push rod 261, and the control gear 263 is fixed on the wide-angle spray pipe 234, and the control gear 263 meshes with the control rack 262.

[0033] like Figure 2 , Figure 3 , Figure 4 As shown, each tee connector 236 is equipped with a tee control valve 27. The tee control valve 27 is used to control the external water supply hose to connect with the corresponding point spray pipe 232 and wide-angle spray pipe 234 respectively, or to control the external water supply hose to connect with the corresponding point spray pipe 232, or to control the external water supply hose to connect with the corresponding wide-angle spray pipe 234.

[0034] The water inlet direction is controlled by the three-way control valve 27, which enables the dust suppression component 2 to perform point spraying, wide-angle spraying or all-round spraying. Construction personnel can select the spraying mode according to the actual situation. The specific spraying mode is described in detail in Example 2.

[0035] The dust suppression equipment in this embodiment uses an air-supported membrane 1 to cover and protect the foundation pit, which reduces the risk of dust escaping, protects the surrounding construction environment, and also has a good noise reduction effect, reducing the risk of disturbing residents. At the same time, the dust suppression component 2 sprays water to suppress dust in the foundation pit construction area, effectively improving the dust suppression effect, protecting the health of construction workers, and reducing the risk of environmental pollution. Example 2

[0036] like Figure 5 The illustration shows Embodiment 2 of the present invention, which discloses a dust suppression method for foundation pit construction. This method uses the dust suppression equipment described in Embodiment 1 and includes the following steps: S1. Before the foundation pit construction, install the foundation pit air membrane 1 and multiple sets of dust suppression components 2 as required. S2, dust suppression is achieved by spraying water onto the construction area of ​​the foundation pit through dust suppression component 2; S3. After the foundation pit construction is completed, the foundation pit air membrane 1 and multiple dust suppression components 2 are disassembled respectively.

[0037] In S2, when spraying water to suppress dust in the construction area of ​​the foundation pit, each dust suppression component 2 can be controlled to perform wide-angle spraying, point spraying, or all-round spraying. The specific operation is as follows: (a) Wide-angle spray dust suppression mode After the excavation pit is completed for the day, the external water supply hose is connected to the corresponding wide-angle sprinkler pipe 234 via the three-way control valve 27. Water is then supplied to the three-way connector 236 through the external water supply hose, and clean water enters the wide-angle sprinkler pipe 234 and is sprayed out through the sprinkler nozzle 235. At this time, the guide frame 22 is controlled to move horizontally and reciprocally via the drive component 24, and the support frame 231 is controlled to move vertically and reciprocally via the control component 25. Simultaneously, the wide-angle sprinkler pipe 234 is controlled to rotate reciprocally via the pipe control component 26, thereby achieving dust suppression by spraying in the area above the excavation pit.

[0038] (ii) Targeted spray dust suppression mode When significant dust is generated at a certain location within the foundation pit, the external water supply hose is connected to the corresponding point-to-point spray pipe 232 via the three-way control valve 27. Water is then supplied to the three-way connector 236 through the external water supply hose, allowing clean water to enter the point-to-point spray pipe 232 and be sprayed out through the atomizing nozzle 233. At this time, the support frame 231 is vertically moved by the control component 25, positioning the point-to-point spray pipe 232 above the dust-generating location. Simultaneously, the guide frame 22 is horizontally reciprocated by the drive component 24, thereby achieving dust suppression through spraying in the construction area within the foundation pit.

[0039] (III) All-round spray dust suppression mode When the foundation pit is fully excavated or a large area of ​​dust is generated, the external water supply hose is connected to the corresponding point-to-point spray pipe 232 and wide-angle spray pipe 234 via the three-way control valve 27. Water is then supplied to the three-way connector 236 via the external water supply hose, allowing clean water to enter the point-to-point spray pipe 232 and wide-angle spray pipe 234, and sprayed out through the atomizing nozzle 233 and spray tip 235. At this time, the guide frame 22 is controlled to reciprocate horizontally via the drive component 24, and the support frame 231 is controlled to reciprocate vertically via the control component 25. Simultaneously, the wide-angle spray pipe 234 is controlled to rotate reciprocally via the pipe control component 26, thereby achieving comprehensive dust suppression spraying in the foundation pit construction area.

[0040] As can be seen from the above, since the dust suppression component 2 can perform wide-angle spraying, point spraying or all-round spraying, construction personnel can choose the dust removal mode according to the actual situation, which can save water resources and reduce the cost of use.

[0041] The specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A dust suppression device for foundation pit construction, characterized in that, It includes a pit air membrane (1) and multiple sets of dust suppression components (2). The pit air membrane (1) is used to cover the pit. The multiple sets of dust suppression components (2) are respectively arranged inside the pit air membrane (1). The multiple sets of dust suppression components (2) are arranged sequentially along the length of the pit, and the multiple sets of dust suppression components (2) are used to spray the pit together to suppress dust. Each of the dust suppression components (2) includes: Two guide rails (21) are symmetrically arranged on both sides of the pit. There are two guide frames (22), each of which is slidably connected to the corresponding guide rail (21); A spray assembly (23) is mounted on the two guide frames (22) and is used to spray water mist; A drive unit (24) is used to control the two guide frames (22) to move horizontally synchronously along the corresponding guide rails (21).

2. The dust suppression equipment according to claim 1, characterized in that, The drive unit (24) includes: Two walking motors (241) are fixed to the corresponding guide frame (22); There are two walking gears (242), each coaxially fixed to the output shaft of the corresponding walking motor (241); Two traveling racks (243) are fixed to the corresponding guide rails (21); The two traveling gears (242) mesh with the corresponding traveling racks (243).

3. The dust suppression equipment according to claim 1, characterized in that, The spray assembly (23) includes: Support frame (231), there are two of them, and they are respectively connected to the corresponding guide frame (22); The point spray pipe (232) is horizontally arranged between the two guide frames (22) and its two ends are respectively fixedly connected to the corresponding support frame (231); Atomizing nozzles (233) are provided in multiple quantities and are respectively connected to the point spray pipe (232). The multiple atomizing nozzles (233) are arranged at equal intervals along the length direction of the point spray pipe (232). Two wide-angle spray pipes (234) are vertically connected to the corresponding support frame (231), and the tops of the two wide-angle spray pipes (234) are sealed. There are two sets of spray nozzles (235), which are respectively set on the corresponding wide-angle spray pipes (234). Each set of spray nozzles (235) is arranged at equal intervals in the vertical direction. Two three-way connectors (236) are fixed on the corresponding support frame (231). One of the interfaces of each three-way connector (236) is used to connect to the external water supply hose, and the other two interfaces are used to connect to the corresponding point spray pipe (232) and the wide-angle spray pipe (234).

4. The dust suppression equipment according to claim 3, characterized in that, Each of the support frames (231) is vertically slidably connected to the corresponding guide frame (22) so that the point spray pipe (232) can enter the pit, and each of the guide frames (22) is provided with a control element (25) for controlling the vertical movement of the corresponding support frame (231).

5. The dust suppression equipment according to claim 4, characterized in that, The control element (25) includes: The control motor (251) is fixed on the guide frame (22); The control gear (252) is coaxially fixed on the output shaft of the control motor (251); The control rack (253) is vertically fixed on the support frame (231) and meshes with the control gear (252).

6. The dust suppression equipment according to claim 3, characterized in that, The bottom of each wide-angle spray pipe (234) is rotatably connected to the corresponding three-way connector (236), and the top is rotatably connected to the corresponding support frame (231). Each support frame (231) is provided with a pipe control device (26) for controlling the reciprocating rotation of the corresponding wide-angle spray pipe (234).

7. The dust suppression equipment according to claim 6, characterized in that, The control unit (26) includes: An electric push rod (261) is fixed to the support frame (231); The control rack (262) is fixed to the telescopic end of the electric push rod (261); The control gear (263) is fixed on the wide-angle spray pipe (234) and meshes with the control rack (262).

8. The dust suppression equipment according to claim 3, characterized in that, Each of the three-way connectors (236) is provided with a three-way control valve (27), which is used to control the external water supply hose to be connected to the corresponding point spray pipe (232) and the wide-angle spray pipe (234) respectively, or to control the external water supply hose to be connected to the corresponding point spray pipe (232), or to control the external water supply hose to be connected to the corresponding wide-angle spray pipe (234).

9. A dust suppression method for foundation pit construction, using the dust suppression equipment described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Before the construction of the foundation pit, install the foundation pit air membrane (1) and multiple dust suppression components (2) as required. S2, dust suppression is carried out by spraying water on the construction area of ​​the foundation pit through the dust suppression component (2); S3. After the foundation pit construction is completed, the foundation pit air membrane (1) and multiple dust suppression components (2) are disassembled respectively.

10. The dust suppression method according to claim 1, characterized in that, In S2, when spraying dust suppression in the foundation pit construction area, each dust suppression component (2) can be controlled to perform wide-angle spraying, point spraying or all-round spraying.

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