Foundation pit dewatering sand content control device

Abstract

The utility model discloses a foundation pit dewatering sand content control device which comprises a pipe body, a flange plate and an adjusting piece, the flange plate is fixedly arranged on the surface of the pipe body and located at the upper end in a sleeved mode, the adjusting piece is movably arranged on the surface of the pipe body in a sleeved mode, and an external thread sleeve is fixedly arranged on the surface of the pipe body and close to the upper end in a sleeved mode. Filter holes are formed in the surface of the pipe body and located below the outer threaded sleeve. According to the foundation pit dewatering sand ratio control device, through the mode that the pipe body and the adjusting piece are matched with each other, when it is found that the sand ratio of water is large in the foundation pit dewatering process, the inner threaded sleeve of the adjusting piece is rotated, so that the inner threaded sleeve rotates and descends, and the sand ratio of the water is adjusted in the rotating and descending process of the inner threaded sleeve. When the pipe body is in use, the shielding ring continuously shields the filter holes of the pipe body, so that the diameter of the filter holes can be reduced, the content of sand entering the pipe body in the precipitation process is reduced, the purpose of controlling the sand content is achieved, and the purpose of controlling the sand content is achieved without replacing pipe bodies with different filter hole diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit dewatering, in particular to a device for controlling the sand content of foundation pit dewatering. Background Art

[0002] During the foundation pit excavation construction process, in order to avoid the generation of quicksand and pipe bursts, prevent the collapse of the pit wall soil, and ensure construction safety and project quality, it is generally necessary to avoid underwater operations as much as possible. When the groundwater level is higher than the foundation pit surface, the foundation pit should be dewatered. There are many ways to dewater, such as electro-osmosis well point dewatering or deep well point dewatering, etc. It is necessary to take corresponding treatment methods according to the specific conditions of the foundation pit. If the method of well point dewatering is adopted, it is necessary to dig a vacuum at the bottom of the well point to lower the water level. The depth is relatively large, and the normal range is 8 to 20 meters. If the method of well point dewatering is adopted, it is more suitable for strata with relatively large permeability, and it is necessary to adopt the method of shallow water layer dewatering. When the water level is lowered, it is necessary to extract groundwater. In order to avoid excessive sand and gravel being extracted during the pumping process, the sand content in the water needs to be controlled.

[0003] When extracting groundwater, a filter tube is needed. There are multiple filter holes on the surface of the filter tube. When the sand content of the water is found to be high during the precipitation process, the sand content needs to be reduced. At this time, the only way is to replace the filter tube with smaller filter holes. This is more troublesome and affects the efficiency of precipitation. Utility Model Content

[0004] The main purpose of the utility model is to provide a device for controlling the sand content in a foundation pit during dewatering, which can effectively solve the problems in the background technology.

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

[0006] A device for controlling the sand content in foundation pit dewatering comprises a pipe body, a flange and an adjusting piece. The surface of the pipe body is fixedly sleeved with a flange at the upper end, and the surface of the pipe body is movably sleeved with an adjusting piece.

[0007] Preferably, an external threaded sleeve is provided on the surface of the tube body near the upper end fixing sleeve, and filter holes are provided on the surface of the tube body below the external threaded sleeve, and the number of the filter holes is several.

[0008] Preferably, the adjusting member comprises an internal threaded sleeve, a blocking ring and a connecting plate, the number of the blocking rings is several, connecting plates are fixedly installed between the blocking rings, and the number of the connecting plates is four.

[0009] Preferably, the inner diameter of the internal threaded sleeve is larger than the outer diameters of the blocking ring and the external threaded sleeve, and the blocking ring and the connecting plate are in contact with the pipe body.

[0010] Preferably, the internal threaded sleeve is fixedly mounted on the surface of the shielding ring, and the internal threaded sleeve is threadedly connected to the external threaded sleeve.

[0011] Preferably, the width of the blocking ring is greater than the diameter of the filter hole.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, by arranging the pipe body and the adjusting member in a manner that cooperates with each other, when it is found that the sand content of water is relatively high during the dewatering process of the foundation pit, the internal threaded sleeve of the adjusting member is rotated to make the internal threaded sleeve rotate and descend. During the process of the internal threaded sleeve rotating and descending, the shielding ring will continuously shield the filter holes of the pipe body, thereby reducing the diameter of the filter holes, thereby reducing the content of sand entering the pipe body during the dewatering process, thereby achieving the purpose of controlling the sand content, and there is no need to achieve the purpose of controlling the sand content by replacing the pipe body with different filter hole diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structural diagram of a foundation pit dewatering sand content control device of the utility model;

[0015] Figure 2 This is a pipe structure diagram of a foundation pit dewatering sand content control device of the utility model;

[0016] Figure 3 The utility model is a structural diagram of an adjusting component of a foundation pit dewatering sand content control device.

[0017] In the figure: 1, pipe body; 101, external threaded sleeve; 102, filter hole; 2, flange; 3, adjustment piece; 301, internal threaded sleeve; 302, shielding ring; 303, connecting plate. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1-3 The device for controlling the sand content in foundation pit dewatering shown in the figure comprises a pipe body 1, a flange 2 and an adjusting member 3. The flange 2 is fixedly sleeved on the surface of the pipe body 1 and located at the upper end, and the adjusting member 3 is movably sleeved on the surface of the pipe body 1.

[0020] An external threaded sleeve 101 is fixedly provided on the surface of the pipe body 1 near the upper end, and filter holes 102 are provided on the surface of the pipe body 1 and below the external threaded sleeve 101. The number of filter holes 102 is several, and groundwater can enter the pipe body 1 through the filter holes 102; the adjusting member 3 includes an internal threaded sleeve 301, a shielding ring 302 and a connecting plate 303. The number of shielding rings 302 is several, and connecting plates 303 are fixedly installed between the shielding rings 302. The number of connecting plates 303 is four, and the connecting plate 303 can connect multiple shielding rings 302 together; the inner diameter of the internal threaded sleeve 301 is larger than the outer diameters of the shielding ring 302 and the external threaded sleeve 101, and the shielding ring 302 and the connecting plate 303 are in contact with the pipe body 1; the internal threaded sleeve 301 is fixedly sleeved on the surface of the shielding ring 302, and the internal threaded sleeve 301 is threadedly connected to the external threaded sleeve 101; the width of the shielding ring 302 is larger than the diameter of the filter hole 102.

[0021] It should be noted that the utility model is a device for controlling the sand content in foundation pit dewatering. When in use, when the sand content of water is found to be relatively high during the foundation pit dewatering process, the internal threaded sleeve 301 of the rotating adjusting member 3 is caused to rotate and descend. During the process of the internal threaded sleeve 301 rotating and descending, the shielding ring 302 will continuously shield the filter holes 102 of the pipe body 1, thereby reducing the diameter of the filter holes 102, thereby reducing the content of sand entering the pipe body 1 during the dewatering process, thereby achieving the purpose of controlling the sand content, and there is no need to achieve the purpose of controlling the sand content by replacing the pipe body with different filter hole 102 diameters.

[0022] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for controlling the sand content of a foundation pit, characterized in that: It comprises a tube body (1), a flange (2) and an adjusting piece (3); the surface of the tube body (1) is fixedly sleeved with a flange (2) at the upper end; the surface of the tube body (1) is movably sleeved with an adjusting piece (3).

2. A device for controlling the sand content of a foundation pit according to claim 1, characterized in that: An external threaded sleeve (101) is provided on the surface of the tube body (1) near the upper fixed sleeve, and filter holes (102) are provided on the surface of the tube body (1) below the external threaded sleeve (101), and the number of the filter holes (102) is several.

3. A device for controlling the sand content of a foundation pit according to claim 2, characterized in that: The adjusting member (3) comprises an internal threaded sleeve (301), a blocking ring (302) and a connecting plate (303), wherein the blocking rings (302) are provided in a plurality, and connecting plates (303) are fixedly mounted between the blocking rings (302), wherein the connecting plates (303) are provided in four plurality.

4. A device for controlling the sand content of foundation pit dewatering according to claim 3, characterized in that: The inner diameter of the internal thread sleeve (301) is greater than the outer diameters of the blocking ring (302) and the external thread sleeve (101), and the blocking ring (302) and the connecting plate (303) are in contact with the pipe body (1).

5. A device for controlling the sand content of foundation pit dewatering according to claim 4, characterized in that: The internal thread sleeve (301) is fixedly sleeved on the surface of the shielding ring (302), and the internal thread sleeve (301) is threadedly connected to the external thread sleeve (101).

6. A device for controlling the sand content in foundation pit dewatering according to claim 5, characterized in that: The width of the shielding ring (302) is greater than the diameter of the filter hole (102).

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