Subway foundation pit drainage device

Abstract

The utility model discloses a subway foundation pit drainage device which comprises a water collecting tank, the upper end of the inner wall of one side of the water collecting tank is a water collecting face, the lower end face of the interior of the water collecting tank is an inclined face, and a filtering assembly is movably installed in the water collecting tank and comprises an installation base movably installed in the middle of the water collecting tank. Through holes which are evenly distributed are formed in the mounting base, and a blind pipe layer is movably mounted on the mounting base. The subway foundation pit drainage device is simple in structure and convenient to install, water is collected through an open drainage method, water can be filtered in the water collection process, the drainage ditch is prevented from being blocked and cut off, accumulated water remaining in the water collection tank can be reduced after drainage is completed, and therefore the drainage effect is improved, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of road engineering, in particular to a subway foundation pit drainage device. Background Art

[0002] The subway foundation pit is the foundation of subway construction; in order to avoid water accumulation in the subway foundation pit and affect the normal construction, it is usually necessary to set up a drainage system in the foundation pit. At present, the commonly used drainage method in the subway foundation pit is the open drainage method, also known as the water collection well drainage method, which uses the method of interception, dredging and pumping to drain the foundation pit and other construction. That is, a drainage ditch is excavated around the bottom of the pit or in the center, and then a water collection well is set at the bottom of the ditch, so that the water in the foundation pit flows into the water collection well through the drainage ditch, and then pumped out of the pit with a water pump. If the pit is deep, the layered open ditch drainage method can be used to deepen the drainage ditch and the water collection well layer by layer, and gradually reach the foundation pit section and pit bottom elevation required by the design.

[0003] The cross-section of existing drainage ditches generally adopts an isosceles trapezoidal structure with a narrow upper end. Although this type of drainage ditch can play a certain role in collecting and draining water, the uneven bottom of the drainage ditch can easily lead to accumulation of water, reducing the drainage effect; and impurities inside the foundation pit will flow into the drainage ditch with the water, causing the drainage ditch to be blocked and cut off, thereby affecting the drainage effect. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a subway foundation pit drainage device with a simple structure and easy installation. It adopts an open drainage method to collect water, can filter water during the water collection process to avoid the drainage ditch from being blocked or cut off, and can also reduce the residual accumulated water in the sump after the drainage is completed, thereby improving the drainage effect. It is easy to use and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a subway foundation pit drainage device, including a water collection trough, the upper end of the inner wall of one side of the water collection trough is a water collection surface, and the inner lower end surface of the water collection trough is an inclined surface. A filter assembly is movably installed inside the water collection trough, and the filter assembly includes a mounting seat movably installed in the middle of the water collection trough, and the mounting seat is provided with evenly distributed through holes, and a blind pipe layer is movably installed on the mounting seat.

[0006] As a preferred technical solution of the utility model, extension plates are provided on both sides of the water collecting trough.

[0007] As a preferred technical solution of the utility model, a slot corresponding to the mounting seat is provided on the lower side of the water collecting surface, and the inclined surface of the mounting seat is flush with the water collecting surface after being snapped into the slot.

[0008] As a preferred technical solution of the utility model, a guide pressure plate for limiting and pressing the blind pipe layer is provided on the inclined surface of the mounting seat.

[0009] As a preferred technical solution of the utility model, a hook is provided on the upper end of the mounting seat away from the water collecting surface, and a positioning groove is provided on the extension plate corresponding to the hook.

[0010] As a preferred technical solution of the utility model, a handle is provided on the side of the hook.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the subway foundation pit drainage device exemplified by the utility model, accumulated water enters the sump, flows downward along the water collecting surface and enters the lower end of the sump, an external water pump suction pipe is inserted into the lower end of the sump, and the external water pump draws water from the sump for discharge, and when the accumulated water passes through the blind pipe layer on the mounting seat, the blind pipe layer filters impurities such as particles and soil in the accumulated water, thereby facilitating the filtering and discharge of the accumulated water.

[0013] The subway foundation pit drainage device exemplified by the utility model has a simple structure and is easy to install. It adopts an open drainage method to collect water. It can filter water during the water collection process to avoid the drainage ditch from being blocked or cut off. It can also reduce the residual water in the sump after the drainage is completed, thereby improving the drainage effect and being easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 A right view structural diagram of ;

[0016] Figure 3 This is a front view structural schematic diagram of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the utility model after being installed inside the drainage ditch of the foundation pit.

[0018] In the figure: 1 water collecting tank, 2 extension plate, 3 water collecting surface, 31 card slot, 4 inclined surface, 5 positioning slot, 6 mounting seat, 61 hook, 62 handle, 7 through hole, 8 blind pipe layer, 9 guide pressure plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides a technical solution: a subway foundation pit drainage device, including a water collection tank 1, the upper end of the inner wall of one side of the water collection tank 1 is a water collection surface 3, and the inner lower end surface of the water collection tank 1 is an inclined surface 4. A filtering component is movably installed inside the water collection tank 1, and the filtering component includes a mounting seat 6 movably installed in the middle of the water collection tank 1, and evenly distributed through holes 7 are opened on the mounting seat 6, and a blind pipe layer 8 is movably installed on the mounting seat 6. The accumulated water enters the water collection tank 1 and flows downward along the water collection surface 3 and enters the lower end of the water collection tank 1. The external water pump suction pipe is inserted into the lower end of the water collection tank 1, and the external water pump extracts the water in the water collection tank 1 for external discharge. When the accumulated water passes through the blind pipe layer 8 on the mounting seat 6, the blind pipe layer 8 filters impurities such as particles and soil in the accumulated water, which is convenient for filtering and discharging the accumulated water.

[0021] Furthermore, extension plates 2 are provided on both sides of the water collection tank 1 to reduce the gap between the water collection tank 1 and the drainage ditch.

[0022] Furthermore, a card slot 31 corresponding to the mounting seat 6 is provided on the lower side of the water collecting surface 3, and the inclined surface of the mounting seat 6 is flush with the water collecting surface 3 after being carded into the inside of the card slot 31, so that the accumulated water flows along the inclined surfaces of the water collecting surface 3 and the mounting seat 6 to the blind pipe layer 8.

[0023] Furthermore, a guide pressure plate 9 for limiting and pressing the blind pipe layer 8 is provided on the inclined surface of the mounting seat 6. The guide pressure plate 9 can guide the accumulated water so that the accumulated water is filtered by the blind pipe layer 8; at the same time, the blind pipe layer 8 can be limited and pressed to prevent the accumulated water from flushing the blind pipe layer 8.

[0024] Furthermore, a hook 61 is provided at the upper end of the mounting seat 6 away from the water collecting surface 3 , and a positioning groove 5 is provided on the extension plate 2 corresponding to the hook 61 , so as to facilitate the fixing of the mounting seat 6 .

[0025] Furthermore, a handle 62 is provided on the side of the hook 61. When it is observed that the blind tube layer 8 is blocked or there are many impurities on the blind tube layer 8, the mounting base 6 is lifted by the handle 62, and then the impurities on the mounting base 6 are dumped, and the blind tube layer 8 is taken out and aligned for cleaning.

[0026] When using:

[0027] A drainage ditch is dug in the subway foundation pit, and the water collecting tank 1 is installed in the drainage ditch along the direction of the drainage ditch, so that the water collecting tank 1 is flush with the foundation pit surface or slightly lower than the foundation pit surface;

[0028] The accumulated water enters the water collecting tank 1, flows downward along the water collecting surface 3 and enters the lower end of the water collecting tank 1. The external water pump water pipe is inserted into the lower end of the water collecting tank 1, and the external water pump extracts the water in the water collecting tank 1 for external discharge;

[0029] When the accumulated water passes through the blind pipe layer 8 on the mounting seat 6, the blind pipe layer 8 filters impurities such as particles and soil in the accumulated water;

[0030] When the water level at the lower end of the water collection tank 1 gradually decreases, the water inside the water collection tank 1 flows to the lower side under the action of the inclined surface 4, which helps to discharge the water in the water collection tank 1 and reduce the residual water in the water collection tank 1;

[0031] When it is observed that the blind pipe layer 8 is blocked or there are many impurities on the blind pipe layer 8, the mounting base 6 is lifted up by the handle 62, and then the impurities on the mounting base 6 are dumped, and the blind pipe layer 8 is taken out and aligned for cleaning;

[0032] When the blind pipe layer 8 is severely corroded, the blind pipe layer 8 can be replaced.

[0033] The utility model has a simple structure and is easy to install. It adopts an open drainage method to collect water. Water can be filtered during the water collection process to avoid blockage and interruption of the drainage ditch. It can also reduce the residual accumulated water in the water collection tank 1 after drainage is completed, thereby improving the drainage effect and being easy to use.

[0034] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A subway foundation pit drainage device, comprising a sump (1), characterized in that: The upper end of the inner wall of one side of the water collecting tank (1) is a water collecting surface (3), and the lower end surface inside the water collecting tank (1) is an inclined surface (4). A filter assembly is movably installed inside the water collecting tank (1), and the filter assembly includes a mounting seat (6) movably installed in the middle of the water collecting tank (1), and the mounting seat (6) is provided with evenly distributed through holes (7), and a blind pipe layer (8) is movably installed on the mounting seat (6).

2. The subway foundation pit drainage device according to claim 1, characterized in that: Extension plates (2) are provided on both sides of the water collecting tank (1).

3. The subway foundation pit drainage device according to claim 1, characterized in that: A slot (31) corresponding to the mounting seat (6) is provided on the lower side of the water collecting surface (3), and the inclined surface of the mounting seat (6) is flush with the water collecting surface (3) after being snapped into the inside of the slot (31).

4. The subway foundation pit drainage device according to claim 3, characterized in that: A flow guide pressure plate (9) for limiting and pressing the blind pipe layer (8) is provided on the inclined surface of the mounting seat (6).

5. The subway foundation pit drainage device according to claim 2, characterized in that: A hook (61) is provided at the upper end of the mounting seat (6) on a side away from the water collecting surface (3), and a positioning groove (5) is provided on the extension plate (2) corresponding to the hook (61).

6. The subway foundation pit drainage device according to claim 5, characterized in that: A handle (62) is provided on the side of the hook (61).

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