Deep foundation pit water pumping device for quicksand geology

Abstract

The quicksand geology deep foundation pit water pumping device comprises a water pumping mechanism and a pipe inserting piece, the water pumping mechanism comprises a vacuum water pump, the input end of the vacuum water pump is fixedly connected with a water pumping pipe, the other end of the water pumping pipe extends into the pipe inserting piece, and the pipe inserting piece comprises a buckling and pressing pipe; the lower end of the buckling and pressing pipe is in threaded connection with a connecting pipe, the lower end of the connecting pipe is in threaded connection with a water seepage pipe, the lower end of the water seepage pipe is in threaded connection with an insertion end, the lower end of the insertion end is conical, a plurality of seepage holes are formed in the side wall of the water seepage pipe, a cylinder frame is arranged in the water seepage pipe, and a filter screen is arranged on the cylinder frame. The underground water pump is directly driven into the ground through the pipe inserting piece to form a groundwater confluence space, so that water pumping is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of pumping devices, and in particular to a pumping device for a deep foundation pit in quicksand geology. Background Art

[0002] During the construction process, groundwater appeared when the foundation pit was less than 1.5 meters deep. The slope of the foundation pit could not be stabilized and collapsed while excavating. If the slope excavation was forced, quicksand would appear inside the foundation pit, causing the foundation pit to collapse.

[0003] The problem of groundwater level is very common during the construction process and often causes troubles to the construction. Common drainage measures such as pipe well drainage and open drainage have large site constraints, long construction preparation time and complex procedures, which have a significant impact on the construction period. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a quicksand geological deep foundation pit pumping device, comprising a pumping mechanism and a pipe insert, wherein the pumping mechanism comprises a vacuum water pump, the input end of the vacuum water pump is fixedly connected with a pumping pipe, and the other end of the pumping pipe extends to the inside of the pipe insert. The pipe insert is inserted on the ground, that is, the pumping pipe is placed in the pipe insert, and the vacuum water pump works to perform pumping operations, the purpose of which is to reduce the water layer height of the foundation and facilitate the excavation of the foundation pit.

[0005] The inserting pipe part comprises a crimping pipe, the lower end of which is threadedly connected to a connecting pipe, the lower end of which is threadedly connected to a water seepage pipe, the lower end of which is threadedly connected to an insertion end, and the lower end of the insertion end is tapered. After the crimping pipe, the connecting pipe, the water seepage pipe and the driving end are connected, they can be driven into the ground using a pile driver, and at the same time, several connecting pipes can be connected according to the depth of water pumping.

[0006] The side wall of the seepage pipe is provided with a plurality of seepage holes, a tube rack is provided inside the seepage pipe, and a filter screen is provided on the tube rack. The seepage pipe collects water in the soil layer into the pipe, and the filter screen is provided inside to prevent the seepage pipe from being damaged and intercept part of the silt. The inside of the insertion end is a cavity, which can also play a role in sedimentation and collection if silt enters the pipe.

[0007] Preferably, the pumping mechanism further includes a base, and the vacuum water pump is fixedly connected to the upper end of the base, and the base is a square plate.

[0008] Preferably, the four corners of the lower end of the base are fixedly connected with support feet, and the cross-section of the support feet is "L" shaped and tilted, and the upper ends of the base are fixedly connected with handles on both sides. That is, the support frame is made of triangular steel, and when the pumping mechanism is placed on the ground, if the ground is soft soil, the support feet can be inserted into the ground to improve the stability of the support. If the ground is hard, it can also provide stable support for the pumping mechanism.

[0009] Preferably, a weight ring is fixedly connected to the side wall of one end of the water pumping pipe, and a sealing ring is arranged on the side wall of the weight ring, so that the lower end of the water pumping pipe can fall to the area of ​​the seepage pipe to realize rapid water pumping operation.

[0010] Preferably, the inserting member further comprises a guide tube, the upper part of which is provided with two convex rings, and the crimping tube passes through the guide tube. That is, the guide tube is fixed to the ground in advance, and then the whole connected with the crimping tube, the connecting tube, the seepage tube and the driving end passes through the guide tube, ensuring that the whole can be driven vertically into the ground. At the same time, the two convex rings can be provided to fix the relevant instruments, and then the guide tube can be pulled out from the ground.

[0011] Preferably, the upper end of the crimping tube is a flange, and the flange abuts against the upper end of the guide tube. By modifying the structure, when the guide tube is pulled out, the crimping tube, the connecting tube, the seepage tube and the driving end can also be pulled out as a whole after being connected.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. The insert pipe fittings can be driven into the ground using a pile driver, and the groundwater will seep into the inside of the insert pipe fittings. The installed vacuum water pump can extract the groundwater. Compared with pipe well dewatering and open drainage dewatering, it has the advantages of simple and fast drainage arrangement.

[0014] 2. A weight ring is provided at one end of the pumping pipe, and a sealing ring is provided on the side wall of the weight ring to seal the space below the pipe. When the vacuum water pump is working, the closed space generates negative pressure, which makes the extraction of groundwater faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 It is a three-dimensional schematic diagram of the pumping mechanism of the present invention;

[0017] Figure 3 It is a three-dimensional schematic diagram of the insertion tube member of the present invention;

[0018] Figure 4 It is an exploded schematic diagram of the insertion tube member of the present invention.

[0019] List of reference numerals:

[0020] 1. Pumping mechanism; 2. Pipe insert;

[0021] 11. Counterweight ring; 12. Suction pipe; 13. Support foot; 14. Base; 15. Handle; 16. Vacuum water pump; 21. Insertion end; 22. Seepage pipe; 23. Connecting pipe; 24. Guide pipe; 25. Pressing pipe; 26. Cylinder stand; 27. Filter screen; 28. Seepage hole. DETAILED DESCRIPTION

[0022] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] Combination Figure 1 and Figure 2 As shown, a quicksand geological deep foundation pit pumping device includes a pumping mechanism 1 and a pipe insert 2. The pipe insert 2 is used to insert into the ground to facilitate pumping operations. The pumping mechanism 1 includes a vacuum water pump 16 for pumping water, including a drive motor and a pump body. The output end of the drive motor is fixedly connected to the rotating part inside the pump body. The input end of the vacuum water pump 16 is fixedly connected to a pumping pipe 12, and the other end of the pumping pipe 12 extends to the inside of the pipe insert 2. When the device is used, the pipe insert 2 is driven into the ground, and then the end of the pumping pipe 12 is placed in the pipe insert 2, and the vacuum water pump 16 works to pump water.

[0024] like Figure 3 As shown, the inserting pipe fitting 2 includes a crimping tube 25, the lower end of the crimping tube 25 is threadedly connected to a connecting tube 23, the lower end of the connecting tube 23 is threadedly connected to a seepage pipe 22, and the lower end of the seepage pipe 22 is threadedly connected to an insertion end 21. In the upper pipe fitting, a threaded end is adopted, and its overall distribution is that the upper inner wall of the pipe fitting is provided with threads, and the side wall of the lower part of the pipe fitting is provided with threads. The lower end of the insertion end 21 is conical, and its conical structure facilitates the connection of the crimping tube 25, the connecting tube 23, the seepage pipe 22 and the driving end 21. After the whole is connected, it is convenient for the crimping tube 25, the connecting tube 23, the seepage pipe 22 and the driving end 21 to be smoothly driven into the ground. According to the depth of pumping, the driving depth of the seepage pipe 22 is controlled. If the length of the whole cannot meet the depth of pumping, the corresponding number of connecting tubes 23 can be added.

[0025] like Figure 4As shown, the side wall of the seepage pipe 22 is provided with a plurality of seepage holes 28, and the water in the soil layer enters the pipe through the seepage holes 28. A cylinder rack 26 is provided inside the seepage pipe 22, and the cylinder rack 26 includes an upper and a lower ring, and a plurality of connecting rods are provided at equal angles between the upper and the lower rings. At the same time, the outer diameter of the lower ring is slightly larger than the outer diameter of the upper ring. During installation, the lower ring moves at the threaded section, and as the insertion end 21 and the seepage pipe 22 are threadedly connected tightly, the cylinder rack 26 is clamped and fixed. A filter screen 27 is provided on the cylinder rack 26, and the filter screen 27 is provided on the side wall of the cylinder rack 26 to reduce the entry of mud and sand into the pipe. The interior of the insertion end 21 is a cavity, which can temporarily store the mud and sand entering the pipe, thereby reducing the impact on the pumping operation.

[0026] like Figure 2 As shown, the pumping mechanism 1 also includes a base 14, which is a plate, and a vacuum water pump 16 is fixedly connected to the upper end of the base 14, and a connecting piece is provided between the base 14 and the vacuum water pump 16, and the vacuum water pump 16 is fixedly connected to the connecting piece, and holes are provided on both sides of the connecting piece, that is, bolts, screws, etc. are used to achieve fixed connection with the base 14.

[0027] The four corners of the lower end of the base 14 are fixedly connected with supporting feet 13, and the cross-sectional shape of the supporting feet 13 is "L" shaped, that is, the supporting feet 13 are angle steels and are tilted at the same time. The purpose of using angle steels and tilted settings is that if the base 14 is placed on a soft ground, the weight of the pumping mechanism 1 and the vibration generated during operation can cause the supporting feet 13 to be inserted into the ground, thereby improving the stability of the placement of the pumping mechanism 1. If it is a hard ground, there is no need to worry about the stability of the placement of the pumping mechanism 1. Handles 15 are fixedly connected to both sides of the upper end of the base 14, which is convenient for lifting and hoisting the pumping mechanism 1 and is conducive to the transfer and use of the device.

[0028] The side wall of one end of the water extraction pipe 12 is fixedly connected with a weight ring 11, and the weight ring 11 is used to facilitate the end of the water extraction pipe 12 to be lowered to the seepage pipe 22 for water extraction. Furthermore, a sealing ring is provided on the side wall of the weight ring 11, and the sealing ring is in close contact with the pipe wall to seal the inside of the pipe. During the operation of the vacuum water pump 16, negative pressure is generated under the weight ring 11, and the soil seeps and the water is extracted faster.

[0029] like Figure 4As shown, the inserting member 2 also includes a guide tube 24. Before the whole body after the crimping tube 25, the connecting tube 23, the seepage tube 22 and the driven end 21 are connected and driven into the ground, the guide tube 24 is fixed to the ground in advance, and then the whole body is driven into the ground from the middle of the guide tube 24, and the lower part of the guide tube 24 is provided with a chamfer to facilitate the fixed connection of the guide tube 24 in the ground. Two convex rings are provided on the upper part of the guide tube 24, and the crimping tube 25 passes through the guide tube 24. The purpose of providing the convex rings at both ends is that the relevant structural components can be used to clamp the convex rings, and then the guide tube 24 can be pulled out from the ground.

[0030] The upper end of the buckling tube 25 is a flange, and the flange is against the upper end of the guide tube 24. When the guide tube 24 is pulled out, due to the structure of the flange, the buckling tube 25, the connecting tube 23, the seepage pipe 22 and the whole connected with the driving end 21 can be pulled out together, which is convenient for reuse.

[0031] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A quicksand geological deep foundation pit pumping device, characterized in that: It comprises a water pumping mechanism (1) and a pipe insert (2), wherein the water pumping mechanism (1) comprises a vacuum water pump (16), an input end of the vacuum water pump (16) is fixedly connected to a water pumping pipe (12), and the other end of the water pumping pipe (12) extends to the interior of the pipe insert (2); The inserting tube member (2) comprises a crimping tube (25), the lower end of the crimping tube (25) being threadedly connected to a connecting tube (23), the lower end of the connecting tube (23) being threadedly connected to a water seepage tube (22), the lower end of the water seepage tube (22) being threadedly connected to an insertion end (21), and the lower end of the insertion end (21) being tapered; A plurality of seepage holes (28) are provided on the side wall of the seepage pipe (22), a cartridge rack (26) is provided inside the seepage pipe (22), and a filter screen (27) is provided on the cartridge rack (26).

2. The quicksand geological deep foundation pit pumping device according to claim 1 is characterized by: The water pumping mechanism (1) further comprises a base (14), and a vacuum water pump (16) is fixedly connected to the upper end of the base (14).

3. The quicksand geological deep foundation pit pumping device according to claim 2 is characterized by: The four corners of the lower end of the base (14) are fixedly connected to support feet (13), and the cross-sectional shape of the support feet (13) is "L"-shaped and is arranged at an angle. The upper ends of the base (14) are fixedly connected to handles (15) on both sides.

4. The quicksand geological deep foundation pit pumping device according to claim 1 is characterized by: A counterweight ring (11) is fixedly connected to a side wall at one end of the water extraction pipe (12), and a sealing ring is provided on the side wall of the counterweight ring (11).

5. The quicksand geological deep foundation pit pumping device according to claim 1 is characterized by: The inserting tube member (2) further comprises a guide tube (24), the upper portion of which is provided with two convex rings, and the pressing tube (25) passes through the guide tube (24).

6. The quicksand geological deep foundation pit pumping device according to claim 5 is characterized by: The upper end of the crimping tube (25) is a flange, and the flange abuts against the upper end of the guide tube (24).

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