Mud and sand filtering device of constructional engineering foundation pit dewatering pipeline

Abstract

The utility model relates to the field of foundation pit dewatering, in particular to a mud and sand filtering device of a building engineering foundation pit dewatering pipeline. Comprising a box body with upper and lower openings and a water storage pipe, the water storage pipe is located on the outer side of the box body, a space is reserved between the water storage pipe and the side wall of the box body, a water outlet is formed in the side face of the water storage pipe, and a sand discharging mechanism capable of being opened and closed is arranged at the bottom of the water storage pipe and located below the box body; a screen is jointly placed on the tops of the supporting mechanisms, and a vibration excitation mechanism is arranged in the supporting mechanisms and located below the screen. Water slows down when passing through the screen at the bottom of the box body, sedimentation of mud and sand is facilitated, the water rises in the water storage pipe to the water outlet to be discharged, the mud and sand are deposited at the bottom of the water storage pipe and then discharged through the sand discharging mechanism, and the excitation mechanism effectively prevents the mud and sand from being accumulated in holes of the screen.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of foundation pit dewatering, and specifically relates to a mud and sand filtering device for foundation pit dewatering pipeline of construction engineering. BACKGROUND

[0002] In the foundation construction involving groundwater, the foundation pit dewatering is one of the important links of the foundation pit construction, and its success or failure directly affects the progress of the project, the cost of the construction, the quality of the supporting project, and the safety of the project, so it must be paid enough attention to. In the past construction process, the open drainage is mostly used for the foundation pit dewatering, which causes the ditches to be staggered in the construction site, the construction road to be muddy and unbearable, and the production and life in the construction site to be seriously affected. Nowadays, the dewatering is more common in the deep foundation construction, and in order to improve the construction efficiency and the working environment of the construction site, the pipeline hidden drainage is mostly used by various construction units. The difficulty of the pipeline hidden drainage lies in that the sewage discharged by the submersible pump contains a large amount of mud and sand, which blocks the drainage pipeline, causes great inconvenience to the construction, seriously affects the construction speed, and also frequently blocks the municipal drainage well. If the pipeline filtering device is used, the static screen structure is mostly used, the anti-blocking design is lacked, the mud and sand need to be manually disassembled and cleaned after the accumulation in the screen aperture, and the maintenance cost is high; the construction site also adopts the pollution removal measures of building the sand trap, but the cost is too high and the occupied site is too large. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the above problems, and provides a mud and sand filtering device for foundation pit dewatering pipeline of construction engineering, which guarantees the construction efficiency.

[0004] The utility model solves the problem by adopting the technical scheme of:

[0005] A mud and sand filtering device for foundation pit dewatering pipeline of construction engineering, which comprises an upper and lower open box body and a water storage pipe, the water storage pipe is located outside the box body and has a space left between the water storage pipe and the side wall of the box body, a drainage port is arranged on the side surface of the water storage pipe, a sand discharging mechanism that can be opened and closed is arranged at the bottom of the water storage pipe and below the box body, a supporting mechanism is arranged at the inner corner of the bottom of the box body, a screen is placed on the top of the supporting mechanism, and an excitation mechanism is arranged in the supporting mechanism and below the screen.

[0006] The utility model adopts the above technical scheme, and compared with the prior art, the utility model has the following prominent features:

[0007] Wastewater is discharged from the pump outlet and flushed from top to bottom. As it passes through the screen at the bottom of the tank, it slows down, facilitating the settling of silt and sand. Water rises in the storage pipe to the drain outlet, while silt and sand settle at the bottom of the pipe and are subsequently discharged through a sand removal mechanism. A vibration mechanism effectively prevents silt and sand from accumulating in the screen mesh. This dynamic anti-clogging design reduces the risk of screen blockage, extends the device's lifespan, and lowers maintenance costs. Compared to traditional static screen structures, the screen is easier to disassemble and clean. By effectively filtering silt and sand and preventing blockage, this device significantly improves the construction site environment.

[0008] As a preferred embodiment, a further technical solution of this utility model is:

[0009] Furthermore, the sludge and sand discharge mechanism includes a cone pipe connected to the lower end of the water storage pipe, and a valve is installed at the bottom end of the cone pipe.

[0010] Furthermore, the support mechanism includes a fixed sleeve fixed at the inner corner of the bottom of the box, and the four corners of the screen are placed on the fixed sleeve.

[0011] Furthermore, the vibration mechanism includes two parallel rotating shafts, which pass through the water storage pipe, the box body, and two adjacent fixed sleeves and are rotatably connected to them. The ends of the rotating shafts are connected to a drive motor, and an eccentric wheel that drives the screen to vibrate is fitted on the rotating shafts and inside the fixed sleeves. Attached Figure Description

[0012] Figure 1 This is a top view of an embodiment of the present invention.

[0013] Figure 2 This is a side view of the three-dimensional structure of an embodiment of the present utility model;

[0014] Figure 3 This is a side view of an embodiment of the present utility model.

[0015] Figure 4 This is a front-view three-dimensional structural diagram of an embodiment of the present utility model;

[0016] The components in the diagram are labeled as follows: 1. Box body; 2. Water storage pipe; 21. Drain outlet; 3. Screen; 4. Conical pipe; 5. Fixed sleeve; 6. Rotating shaft; 7. Drive motor; 8. Eccentric wheel. Detailed Implementation

[0017] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0018] A mud and sand filtration device for a dewatering pipe in a building foundation pit includes an open-top and bottom box 1 and a water storage pipe 2. The water storage pipe 2 is located outside the box 1 and has a space between it and the side wall of the box 1. A drain outlet 21 is provided on the side of the water storage pipe 2. In this embodiment, two drain outlets 21 are symmetrically arranged. A sand discharge mechanism that can be opened and closed is provided at the bottom of the water storage pipe 2 and below the box 1. A support mechanism is provided at the inner corner of the bottom of the box 1. A screen 3 is placed on the top of the support mechanism. The screen 3 slows down the sewage flushed by the water pump so that mud and sand can be deposited at the bottom. The sewage rises between the water storage pipe 2 and the box 1 and is discharged through the drain outlet 21. A vibration mechanism is provided inside the support mechanism and below the screen 3. The vibration mechanism drives the screen 3 to vibrate to prevent mud and sand from accumulating in the pores of the screen 3.

[0019] Furthermore, the sludge and sand discharge mechanism includes a cone pipe 4 connected to the lower end of the water storage pipe 2. A valve is provided at the bottom end of the cone pipe 4. The cone-shaped bottom design helps the sludge and sand to gather towards the center under the action of gravity, making it easier to discharge through the valve at the bottom. The valve is opened periodically to discharge the deposited sludge and sand.

[0020] Furthermore, the support mechanism includes a fixed sleeve 5 fixed at the inner corner of the bottom of the box 1. The four corners of the screen 3 are placed on the fixed sleeve 5. The sleeve has an open structure at the top and bottom to avoid obstructing the mud and sand. The screen 3 is supported by the fixed sleeve 5.

[0021] Furthermore, the vibration mechanism includes two parallel rotating shafts 6, which pass through the water storage pipe 2, the box 1, and two adjacent fixed sleeves 5 and are rotatably connected to them. The end of the rotating shaft 6 is connected to a drive motor 7, which is fixed to the outside of the water storage pipe 2. An eccentric wheel 8 is installed on the rotating shaft 6 and inside the fixed sleeve 5 to drive the screen 3 to vibrate. During the rotation of the eccentric wheel 8 inside the fixed sleeve 5, the top of the eccentric wheel 8 will drive the screen 3 to vibrate, thereby effectively preventing mud and sand from accumulating in the pores of the screen 3.

[0022] Wastewater is discharged from the pump outlet and flushed from top to bottom. When it passes through the screen 3 at the bottom of the tank 1, it slows down, which facilitates the settling of mud and sand. The water rises in the water storage pipe 2 to the drain outlet 21 and is discharged. The mud and sand are deposited at the bottom of the water storage pipe 2 and then discharged through the cone pipe 4 and valve. The eccentric wheel 8 moves the screen 3 to vibrate, which effectively prevents mud and sand from accumulating in the pores of the screen 3. This dynamic anti-clogging design reduces the risk of clogging of the screen 3, extends the service life of the device, and reduces maintenance costs. Compared with the traditional static screen 3 structure, the screen 3 of this device is easier to disassemble and clean. By effectively filtering mud and sand and preventing clogging, this device can significantly improve the environment of the construction site.

[0023] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A mud and sand filtration device for a dewatering pipeline in a building foundation pit, characterized in that: It includes an open-top and open-bottom box and a water storage pipe. The water storage pipe is located on the outside of the box and has a space between it and the side wall of the box. A drain outlet is provided on the side of the water storage pipe. A sand discharge mechanism that can be opened and closed is provided at the bottom of the water storage pipe and below the box. A support mechanism is provided at the inner corner of the bottom of the box. A screen is placed on the top of the support mechanism. A vibration mechanism is provided inside the support mechanism and below the screen.

2. The silt and sand filtration device for the dewatering pipeline of a building foundation pit according to claim 1, characterized in that: The sludge and sand removal mechanism includes a cone pipe connected to the lower end of the water storage pipe, and a valve is installed at the bottom end of the cone pipe.

3. The silt and sand filtration device for the dewatering pipeline of a building foundation pit according to claim 1, characterized in that: The support mechanism includes a fixed sleeve fixed at the inner corner of the bottom of the box, and the four corners of the screen are placed on the fixed sleeve.

4. The silt and sand filtration device for the dewatering pipeline of a building foundation pit according to claim 3, characterized in that: The vibration mechanism includes two parallel rotating shafts, which pass through the water storage pipe, the tank and two adjacent fixed sleeves and are rotatably connected to them. The ends of the rotating shafts are connected to a drive motor, and an eccentric wheel that drives the screen to vibrate is fitted on the rotating shaft and inside the fixed sleeve.

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