Deep foundation pit pressure-bearing drainage device

Abstract

The utility model provides a deep foundation pit pressure-bearing drainage device. The drainage device comprises a drainage pipe with a closed end opening, a plurality of draining holes are formed in the side wall of the drainage pipe, the outer portion of the drainage pipe is fixedly connected with symmetrically-distributed fixing rings, filter cloth is fixedly connected between the fixing rings, the inner wall of the filter cloth is fixedly connected with a plurality of circumferentially-distributed supporting rods, and the supporting rods are connected with the drainage pipe through a buffering mechanism. A supporting plate is fixedly connected into the drainage pipe, a supporting pipe is fixedly connected to the bottom of the supporting plate, and a rotating disc is rotationally connected to the outside of the supporting pipe and connected with the multiple supporting rods through a transmission mechanism. When the drainage pipe is used for pressure-bearing drainage of a deep foundation pit, the supporting rods are used for buffering the filter cloth, the pressure of sludge on the drainage pipe can be effectively reduced, the filter cloth can be evenly stressed, the phenomenon that the filter cloth is broken due to the fact that the filter cloth is stressed in a single direction can be effectively avoided, and the pressure resistance of the device is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit drainage, in particular to a deep foundation pit pressure-bearing drainage device. Background Art

[0002] A deep foundation pit is a construction pit with a depth of more than 5 meters (including 5 meters). The deep foundation pit dug at the construction site is often outdoors. The outdoor weather environment is relatively unstable, and rainwater will accumulate inside the deep foundation pit, so it is necessary to operate a pressure drainage device to drain the liquid inside the deep foundation pit.

[0003] In the prior art, when draining deep foundation pits, a drainage pipe is generally placed inside the silt, and a layer of filter cloth is provided outside the drainage pipe. The pressurized water in the silt enters the drainage pipe through the filter cloth. When the pressurized water inside the drainage pipe reaches a certain level, it is pumped out by a water pump.

[0004] However, this drainage device has certain defects. The drainage pipe and the filter cloth are both located inside the silt. When the silt exerts too much pressure on the filter cloth, it is easy to cause the filter cloth to break, and the pressure-bearing capacity is low. Utility Model Content

[0005] The utility model aims to provide a deep foundation pit pressure-bearing drainage device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a deep foundation pit pressure drainage device, the drainage device comprises a drainage pipe with a closed port, a filter cloth sleeve arranged on the outside of the drainage pipe and a water pump arranged in the drainage pipe, a plurality of drainage holes are arranged on the side wall of the drainage pipe, the filter cloth sleeve comprises a fixing ring symmetrically arranged on the outer walls of the upper and lower ends of the drainage pipe and a filter cloth connected between the two fixing rings, the filter cloth is arranged on the outer wall of the drainage pipe in a cylindrical shape, and a buffer space is provided between the filter cloth and the outer wall of the drainage pipe, a plurality of support rods are distributed in a circular shape on the inner wall of the cylindrical filter cloth, and each support rod is connected to the outer wall of the drainage pipe through a buffer mechanism; a support plate is provided in the inner cavity of the drainage pipe, a support pipe is fixedly connected to the bottom of the support plate, a turntable is rotatably connected to the outside of the support pipe, the turntable is connected to the plurality of support rods through a transmission mechanism, and the force exerted on the support rods is transmitted to the turntable through the transmission mechanism; the water pump is located on the support plate, and its water pump passes through the support plate and extends into the inner cavity of the drainage pipe.

[0007] A better technical solution of the utility model: the buffer mechanism includes a connecting rod hinged to the support rod and a slider hinged to the other end of the connecting rod, a sliding groove is correspondingly provided on the outer wall of the drain pipe, the slider is slidably connected to the corresponding sliding groove, and a first spring connecting the slider to the sliding groove is provided in the sliding groove.

[0008] The better technical solution of the utility model is as follows: each support rod is connected to the turntable through a group of transmission mechanisms, and the transmission mechanism includes a support rod fixedly connected to the support rod and a movable rod rotatably connected to the turntable, the support rod penetrates the side wall of the drain pipe, extends into the drain pipe, and is rotatably connected to the movable rod.

[0009] A better technical solution of the utility model is that the lower end of the support pipe is suspended, and the water suction pipe extends into the lower part of the drainage pipe along the support pipe.

[0010] The better technical solution of the utility model is as follows: an extrusion ring is provided under the turntable, and a plurality of guide rods distributed in a circle are fixedly connected to the bottom of the extrusion ring, a plurality of guide cylinders distributed in a circle are correspondingly provided at the bottom of the drain pipe, and each guide rod is inserted into the corresponding guide cylinder and slidably connected to the guide cylinder, and a second spring is provided on the outer shell of each guide rod, one end of the second spring is connected to the extrusion ring, and the other end is connected to the guide cylinder; a plurality of extrusion blocks distributed in a circle are integrally formed on the top of the extrusion ring, and each extrusion block has an inclined surface, and a plurality of extrusion rods distributed in a circle are correspondingly provided at the bottom of the turntable, and the lower end of each extrusion rod is in contact with the inclined surface of the corresponding extrusion block.

[0011] The better technical solution of the utility model is as follows: a limit block is arranged on the inner wall of the turntable, an arc-shaped limit groove is arranged on the outer wall of the support tube, the limit block is located in the limit groove and is slidably connected with the limit groove.

[0012] The better technical solution of the utility model is: multiple support rods are evenly distributed on the inner wall of the filter cloth, each support rod is vertically arranged on the inner wall of the filter cloth, each support rod is connected to the outer wall of the drain pipe through two groups of buffer mechanisms, and the two groups of buffer mechanisms are symmetrically arranged at the upper and lower ends of the support rods.

[0013] Compared with the prior art, the beneficial effect of the utility model is that when the drain pipe is used for deep foundation pit pressure drainage, the filter cloth is buffered by the support rod, which can effectively reduce the pressure of the silt on the drain pipe, thereby improving the pressure resistance of the drain pipe, and when the pressure on one side of the filter cloth is relatively large, the support rod will synchronously move toward the direction of the drain pipe, causing the filter cloth to contract, and the silt at the place with higher pressure will automatically move toward other directions of the filter cloth, thereby making the filter cloth evenly stressed, which can effectively avoid the filter cloth breakage caused by the filter cloth being stressed in a single direction, and further improve the pressure resistance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the overall structure in the embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the extrusion ring in the embodiment of the utility model;

[0016] Figure 3 This is a top view of the turntable structure in the embodiment of the utility model;

[0017] Figure 4 It is an enlarged schematic diagram of the buffer mechanism in the utility model.

[0018] In the figure: 1. drain pipe; 2. support rod; 3. buffer mechanism; 31. connecting rod; 32. slider; 33. first spring; 34. slide groove; 4. transmission mechanism; 41. support rod; 42. movable rod; 5. filter cloth; 6. fixing ring; 7. support plate; 8. support pipe; 9. suction pipe; 10. water pump; 11. turntable; 12. extrusion rod; 13. extrusion block; 14. guide cylinder; 15. extrusion ring; 16. second spring; 17. guide rod; 18. limit block; 19. limit groove; 20. drain hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0021] A deep foundation pit pressure drainage device provided in an embodiment, such as Figure 1 As shown, it includes a drain pipe 1, a plurality of drainage holes 20 are provided on the side wall of the drain pipe 1, a symmetrically distributed fixing ring 6 is fixedly connected to the outside of the drain pipe 1, a filter cloth 5 is fixedly connected between the fixing rings 6, the filter cloth 5 is arranged in an annular shape, a plurality of circumferentially distributed support rods 2 are fixedly connected to the inner wall of the filter cloth 5, each support rod 2 is arranged vertically, and a plurality of support rods 2 are equidistantly distributed; each support rod 2 is connected to the drain pipe 1 through two groups of buffer mechanisms 3, the two groups of buffer mechanisms 3 are symmetrically distributed at the upper and lower ends of the support rod 2, the buffer mechanism 3 is used for elastic support of the support rod 2, a support plate 7 is fixedly connected to the inside of the drain pipe 1, a support pipe 8 is fixedly connected to the bottom of the support plate 7, a turntable 11 is rotatably connected to the outside of the support pipe 8, the turntable 11 is connected to the plurality of support rods 2 through a transmission mechanism 4, the transmission mechanism 4 is used to transmit the force exerted on the support rod 2 to the turntable 11, so that the turntable 11 drives the remaining support rods 2 to move synchronously, a water pump 10 is fixedly connected to the top of the support plate 7, and the water pump 10 is connected to a water pumping pipe 9. The lower end of the support pipe 8 is suspended, and the water suction pipe 9 extends into the lower part of the drainage pipe 1 along the support pipe 8 .

[0022] In the present embodiment, when the drain pipe 1 is used for deep foundation pit pressure drainage, the pressurized water inside the foundation pit enters the drain pipe 1 through the filter cloth 5 and the drainage hole 20. When the pressurized water inside the drain pipe 1 reaches a certain amount, the water pump 10 is started. The water pump 10 discharges the pressurized water to the outside of the drain pipe 1 through the pumping pipe 9, thereby achieving the purpose of drainage. When the pressure on one side of the filter cloth 5 is too large, the sludge on this side squeezes the buffer mechanism 3 through the support rod 2. The buffer mechanism 3 buffers the filter cloth 5 through the support rod 2, which can effectively reduce the pressure on the drain pipe 1, thereby improving the pressure bearing capacity of the drain pipe 1. While the support rod 2 moves, the rotating disk 11 is driven to rotate through the transmission mechanism 4. The rotating disk 11 drives the support rods 2 in other directions to move synchronously toward the direction of the drain pipe 1. The filter cloth 5 is in a contracted state. Since the filter cloth 5 contracts inwardly, the sludge at the place with higher pressure will move toward other directions, so that the filter cloth 5 is evenly stressed, which can effectively avoid the breakage of the filter cloth 5 caused by the single-direction stress on the filter cloth 5, further improving the pressure resistance of the device.

[0023] In the embodiment, Figure 1 and Figure 4 As shown, the buffer mechanism 3 includes a connecting rod 31 rotatably connected to the support rod 2, and the other end of the connecting rod 31 is rotatably connected to a slider 32. A slide groove 34 is correspondingly provided on the side wall of the drain pipe 1, and the slider 32 is located inside the slide groove 34 and is slidably connected to the slide groove 34 through a first spring 33. When the filter cloth 5 is squeezed by the silt, the silt squeezes the support rod 2, and the support rod 2 drives the slider 32 to slide inside the slide groove 34 through the connecting rod 31. When the slider 32 slides, it squeezes the first spring 33. The first spring 33 elastically supports the slider 32, and then plays an elastic supporting role on the support rod 2, which can effectively reduce the pressure on the drain pipe 1 and improve the pressure resistance of the drain pipe 1.

[0024] Implementation example Figure 1 and Figure 2 The transmission mechanism 4 includes a support rod 41 fixedly connected to the support rod 2, the support rod 41 penetrates the side wall of the drain pipe 1, and one end of the support rod 41 located inside the drain pipe 1 is rotatably connected to a movable rod 42, and the other end of the movable rod 42 is rotatably connected to the turntable 11. When the pressure on one side of the filter cloth 5 is too large, the sludge on this side drives the support rod 41 to move through the support rod 2, and the support rod 41 drives the turntable 11 to rotate through the connecting rod 31. The turntable 11 drives the support rods 2 in other directions to move toward the drain pipe 1 through the remaining connecting rods 31 and the support rod 41, thereby causing the filter cloth 5 to shrink, and the sludge at the place with greater pressure moves toward other directions of the filter cloth 5, thereby making the filter cloth 5 evenly stressed, thereby improving the pressure resistance of the filter cloth 5.

[0025] See also Figure 2A limit block 18 is provided on the inner wall of the turntable 11, and an arc-shaped limit groove 19 is provided on the outer wall of the support tube 8. The limit block 18 is located inside the limit groove 19 and is slidably connected to the limit groove 19; the limit groove 19 plays a limiting role on the turntable 11 through the limit block 18, which effectively improves the stability of the turntable 11 during rotation.

[0026] See also Figure 1 and Figure 3 A squeezing ring 15 is provided under the rotating disk 11, and a plurality of guide rods 17 distributed in a circle are fixedly connected to the bottom of the squeezing ring 15. A plurality of guide cylinders 14 distributed in a circle are fixedly connected to the bottom of the drain pipe 1. The squeezing ring 15 is connected to the guide cylinder 14 through a second spring 16. The guide rod 17 is inserted into the guide cylinder 14 and is slidably connected to the guide cylinder 14. A plurality of squeezing blocks 13 distributed in a circle are integrally formed on the top of the squeezing ring 15. The squeezing block 13 has an inclined surface. A plurality of squeezing rods 12 distributed in a circle are fixedly connected to the bottom of the rotating disk 11, and the lower end of the squeezing rod 12 is in contact with the inclined surface of the squeezing block 13. The rotation of the turntable 11 drives the extrusion rod 12 at the bottom thereof to move in a circular motion. The extrusion rod 12 moves in a circular motion and squeezes the inclined surface of the extrusion block 13, so that the extrusion block 13 drives the extrusion ring 15 to move downward. The extrusion ring 15 squeezes the second spring 16. The second spring 16 buffers the extrusion ring 15, thereby buffering the turntable 11, further improving the buffering effect on the support rod 2. In addition, the guide cylinder 14 limits the extrusion ring 15 through the guide rod 17, thereby improving the stability of the extrusion ring 15.

[0027] The working principle of the utility model is as follows: when the drainage pipe 1 is used for deep foundation pit pressure drainage, the pressurized water inside the foundation pit enters the drainage pipe 1 through the filter cloth 5 and the drainage hole 20. When the pressurized water inside the drainage pipe 1 reaches a certain amount, the water pump 10 is started, and the water pump 10 discharges the pressurized water to the outside of the drainage pipe 1 through the pumping pipe 9. When the pressure on one side of the filter cloth 5 is too large, the silt on this side squeezes the support rod 2, and the support rod 2 drives the slider 32 to slide in the slide groove 34 through the connecting rod 31. While the slider 32 slides, it squeezes the first spring 33. The first spring 33 elastically supports the slider 32, and then plays an elastic supporting role for the support rod 2, which can effectively reduce the pressure on the drainage pipe 1 and improve the pressure resistance of the drainage pipe 1. While the support rod 2 moves, it also drives the support rod 41 to move. The support rod 41 moves through the connecting rod 31 The turntable 11 is driven to rotate, and the turntable 11 drives the support rods 2 in other directions to move toward the drain pipe 1 through the remaining connecting rods 31 and the support rods 41, so that the filter cloth 5 contracts, and the sludge at the place with greater pressure automatically moves toward other directions of the filter cloth 5, so that the filter cloth 5 is evenly stressed, which can effectively avoid the filter cloth 5 from being broken due to the single-direction force on the filter cloth 5, and further improve the pressure resistance of the device. In addition, the rotation of the turntable 11 drives the extrusion rod 12 at its bottom to move in a circle, and the extrusion rod 12 squeezes the inclined surface of the extrusion block 13, so that the extrusion block 13 drives the extrusion ring 15 to move downward, and the extrusion ring 15 squeezes the second spring 16, and the second spring 16 buffers the extrusion ring 15, thereby playing a buffering role on the turntable 11, and further improving the buffering effect on the support rod 2.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep foundation pit pressure drainage device, characterized in that: The drainage device comprises a drainage pipe (1) with a closed end, a filter cloth sleeve sleeved outside the drainage pipe (1), and a water pump (10) arranged in the drainage pipe (1); a plurality of drainage holes (20) are arranged on the side wall of the drainage pipe (1); the filter cloth sleeve comprises a fixing ring (6) symmetrically arranged on the outer walls of the upper and lower ends of the drainage pipe (1) and a filter cloth (5) connected between the two fixing rings (6); the filter cloth (5) is arranged in a cylindrical shape on the outer wall of the drainage pipe (1), and a buffer space is provided between the filter cloth (5) and the outer wall of the drainage pipe (1); a plurality of support roots are distributed circumferentially on the inner wall of the cylindrical filter cloth (5). Rods (2), each support rod (2) being connected to the outer wall of the drainage pipe (1) via a buffer mechanism (3); a support plate (7) is provided in the inner cavity of the drainage pipe (1); a support pipe (8) is fixedly connected to the bottom of the support plate (7); a turntable (11) is rotatably connected to the outside of the support pipe (8); the turntable (11) is connected to the plurality of support rods (2) via a transmission mechanism, and the force applied to the support rods (2) is transmitted to the turntable (11) via the transmission mechanism; the water pump (10) is located on the support plate (7), and its water suction pipe (9) passes through the support plate (7) and extends into the inner cavity of the drainage pipe (1).

2. A deep foundation pit pressure drainage device according to claim 1, characterized in that: The buffer mechanism (3) comprises a connecting rod (31) hingedly connected to the support rod (2) and a sliding block (32) hingedly connected to the other end of the connecting rod (31); a sliding groove (34) is correspondingly provided on the outer wall of the drainage pipe (1); the sliding block (32) is slidably connected to the corresponding sliding groove (34); and a first spring (33) is provided in the sliding groove (34) for connecting the sliding block (32) to the sliding groove (34).

3. A deep foundation pit pressure drainage device according to claim 1 or 2, characterized in that: Each support rod (2) is connected to the turntable (11) via a set of transmission mechanisms (4), wherein the transmission mechanism (4) comprises a support rod (41) fixedly connected to the support rod (2) and a movable rod (42) rotatably connected to the turntable (11), wherein the support rod (41) penetrates the side wall of the drainage pipe (1) and extends into the drainage pipe (1), and is rotatably connected to the movable rod (42).

4. A deep foundation pit pressure drainage device according to claim 1 or 2, characterized in that: The lower end of the support pipe (8) is suspended in the air, and the water suction pipe (9) extends along the support pipe (8) into the lower part of the drainage pipe (1).

5. A deep foundation pit pressure drainage device according to claim 1 or 2, characterized in that: An extrusion ring (15) is provided below the rotating disk (11), and a plurality of guide rods (17) distributed in a circumferential manner are fixedly connected to the bottom of the extrusion ring (15); a plurality of guide cylinders (14) distributed in a circumferential manner are correspondingly provided at the bottom of the drain pipe (1), and each guide rod (17) is inserted into a corresponding guide cylinder (14) and slidably connected to the guide cylinder (14); a second spring (16) is provided outside each guide rod (17), and one end of the second spring (16) is connected to the extrusion ring (15) and the other end is connected to the guide cylinder (14); a plurality of extrusion blocks (13) distributed in a circumferential manner are integrally formed at the top of the extrusion ring (15), and each extrusion block (13) has an inclined surface; a plurality of extrusion rods (12) distributed in a circumferential manner are correspondingly provided at the bottom of the rotating disk (11), and the lower end of each extrusion rod (12) is in contact with the inclined surface of the corresponding extrusion block (13).

6. A deep foundation pit pressure drainage device according to claim 1 or 2, characterized in that: A limit block (18) is provided on the inner wall of the rotating disk (11), an arc-shaped limit groove (19) is provided on the outer wall of the supporting tube (8), and the limit block (18) is located in the limit groove (19) and is slidably connected to the limit groove.

7. A deep foundation pit pressure drainage device according to claim 2, characterized in that: A plurality of support rods (2) are evenly distributed on the inner wall of the filter cloth (5), each support rod (2) is vertically arranged on the inner wall of the filter cloth (5), each support rod (2) is connected to the outer wall of the drainage pipe (1) via two sets of buffer mechanisms (3), and the two sets of buffer mechanisms are symmetrically arranged at the upper and lower ends of the support rod (2).

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