Foundation pit drainage structure

Abstract

The utility model relates to the technical field of foundation pit drainage, and discloses a foundation pit drainage structure which comprises an installation frame, a drainage pump is installed at the top end of the installation frame, a water suction opening in one side of the drainage pump is connected with two water suction pipes, and the ends, away from the drainage pump, of the water suction pipes are connected with corrugated pipes. Impurity collecting frames are installed at the lower positions of the front end and the rear end of the mounting frame through mounting bolts and mounting nuts correspondingly, filter cartridges are detachably installed at the ends, close to the mounting frame, of the interiors of the two impurity collecting frames through threaded mounting bases, and a water suction head is connected to the end, away from the water suction pipe, of a corrugated pipe. The bottom end of the water suction head is connected with a water suction filter head; through the water suction pipe, the first waterproof electromagnetic valve and the second waterproof electromagnetic valve, the water pumping height can be adjusted according to the water flow height in the foundation pit, the drainage efficiency is improved, the influence of the impurity removal process on the water pumping efficiency is reduced, centralized treatment is facilitated, and the forward working time of the filter cartridge is prolonged conveniently.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit drainage technology, specifically a foundation pit drainage structure. Background Technology

[0002] A foundation pit is a deep pit dug on the ground, usually used for infrastructure construction in building projects. Currently, deep foundation pit drainage usually adopts the pumping drainage method of brick-built sump wells and submersible pumps to pump water. Its main purpose is to lower the groundwater level and ensure the dryness and safety of the foundation pit.

[0003] A search revealed a Chinese patent for a foundation pit drainage structure, publication number CN222332743U, which includes a drainage pump and a drain pipe located at the upper end of the drainage pump. A suction pipe is connected to the side wall of the drainage pump, and a fixing frame is fixedly arranged around the side wall of the drainage pump. Connecting rods are fixedly arranged on the lower walls of both sides of the fixing frame.

[0004] The above-mentioned device effectively prevents soil and stones in the foundation pit from entering the opening of the suction pipe through the filtration of the mesh plate, and effectively prevents the suction pipe from becoming blocked due to long-term operation. Through the stabilizing rod and movable block, the mesh plate can always be in contact with the bottom of the foundation pit, which can efficiently pump out the water from the bottom of the foundation pit.

[0005] However, while it filters impurities through a perforated plate, it can only block them at the water inlet. As the water flows out, the impurities gradually accumulate below the perforated plate, requiring replacement or cleaning of the accumulated impurities. This process is quite cumbersome, and the filter structure is relatively simple. The sewage in the pit contains a lot of impurities, which can easily clog the perforated plate. Utility Model Content

[0006] The purpose of this utility model is to provide a foundation pit drainage structure that can effectively solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A foundation pit drainage structure includes a mounting frame, a drainage pump is mounted on the top of the mounting frame, two suction pipes are connected to a suction port on one side of the drainage pump, and a corrugated pipe is connected to the end of the suction pipe away from the drainage pump.

[0009] Impurity collection frames are installed at the lower ends of both the front and rear ends of the mounting frame using mounting bolts and nuts. Filter cartridges are detachably installed inside the two impurity collection frames, near the end of the mounting frame, via threaded mounting seats. A water suction head is connected to the end of the corrugated pipe away from the suction pipe. A water suction filter head is connected to the bottom end of the water suction head and is located inside the filter cartridge. Waterproof electric telescopic rods that are compatible with the corrugated pipe are installed at both the front and rear ends of the mounting frame. The end of the drive shaft of the waterproof electric telescopic rod is connected to the water suction head.

[0010] Preferably, the outer ring of the filter cylinder is provided with a plurality of sieve holes, and an O-ring is provided at the upper position of the outer ring of the water-absorbing filter head. The outer ring of the O-ring is in contact with the inner wall of the filter cylinder, and the O-ring is slidably connected to the filter cylinder.

[0011] Preferably, the center points of the water-absorbing filter head, the water-absorbing head, and the filter cylinder are on the same vertical line, and there is an adjustment gap between the push rod of the waterproof electric telescopic rod and the filter cylinder, and when the push rod of the waterproof electric telescopic rod is retracted to its limit, the bottom surface of the water-absorbing filter head is higher than the top surface of the filter cylinder.

[0012] Preferably, a waterproof solenoid valve one is installed at the connection between the water suction pipe and the drainage pump near the front end of the mounting frame, and a waterproof solenoid valve two is installed at the connection between the water suction pipe and the drainage pump near the rear end of the mounting frame.

[0013] Preferably, the impurity collection frame has mounting grooves on both sides at one end near the mounting frame to match the mounting bolts, and the front, rear, and bottom ends of the impurity collection frame are provided with drainage nets.

[0014] Preferably, the impurity collection frame has a handle at the top of the frame near the second position, a groove at the front of the frame near the center, and the bottom surface of the impurity collection frame is flush with the bottom surface of the mounting frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model, by setting up a water suction pipe, a waterproof solenoid valve one, a waterproof solenoid valve two, a filter cylinder, a corrugated pipe, and a waterproof electric telescopic rod in coordination, can adjust the pumping height according to the water flow height in the foundation pit. At the same time, after a large amount of impurities have accumulated at one filter cylinder, the water flow in the foundation pit can be pumped out through the other filter cylinder. By alternating pumping, the drainage efficiency can be improved and the impact of the cleaning process on the pumping efficiency can be reduced.

[0017] By setting up an impurity collection frame, a water leakage screen, and a filter cylinder to work together, the impurity collection frame can collect the impurities blocked at the filter cylinder during the drainage process, making it easy to handle them centrally. The filter cylinder is cylindrical, so the impurities will accumulate at the bottom due to gravity. At this time, it does not affect the water flow from the screen holes at the top, which can increase the positive working time of the filter cylinder and reduce the frequency of cleaning and maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a foundation pit drainage structure according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the impurity collection frame in an embodiment of the present invention;

[0020] Figure 3 This is a top view of the structure of the impurity collection frame, filter cylinder, and drainage pump in the embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the corrugated pipe, water absorption filter head, and impurity collection frame in the embodiment of this utility model.

[0022] In the diagram: 1. Mounting bracket; 2. Drain pump; 3. Suction pipe; 4. Corrugated pipe; 5. Suction head; 6. Waterproof electric telescopic rod; 7. Filter cartridge; 8. Suction filter head; 9. O-ring; 10. Impurity collection frame; 11. Threaded mounting base; 12. Mounting groove; 13. Leakage mesh; 14. Waterproof solenoid valve one; 15. Waterproof solenoid valve two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Combination Figures 1-4 A foundation pit drainage structure includes a mounting frame 1, a drainage pump 2 is mounted on the top of the mounting frame 1, two suction pipes 3 are connected to the suction port on one side of the drainage pump 2, and a corrugated pipe 4 is connected to the end of the suction pipe 3 away from the drainage pump 2.

[0026] See Figure 3 and Figure 4Furthermore, it is found that impurity collection frames 10 are installed at the lower positions of both the front and rear ends of the mounting frame 1 using mounting bolts and nuts. Filter cylinders 7 are detachably installed inside the two impurity collection frames 10, near one end of the mounting frame 1, via threaded mounting seats 11. A suction head 5 is connected to the end of the corrugated pipe 4 away from the suction pipe 3. A suction filter head 8 is connected to the bottom end of the suction head 5 and is located inside the filter cylinder 7. Waterproof electric telescopic rods 6, compatible with the corrugated pipe 4, are installed at both the front and rear ends of the mounting frame 1. The end of the drive shaft is connected to the water suction head 5. The outer ring of the filter cylinder 7 is provided with several sieve holes. An O-ring rubber ring 9 is provided at the upper position of the outer ring of the water suction head 8. The outer ring of the O-ring rubber ring 9 fits against the inner wall of the filter cylinder 7, and the O-ring rubber ring 9 and the filter cylinder 7 are slidably connected. The center points of the water suction head 8, the water suction head 5, and the filter cylinder 7 are on the same vertical line. There is an adjustment gap between the push rod of the waterproof electric telescopic rod 6 and the filter cylinder 7. When the push rod of the waterproof electric telescopic rod 6 is retracted to the limit, the bottom surface of the water suction head 8 is higher than the top surface of the filter cylinder 7.

[0027] Specifically, the drainage pump 2 can be fixed in a suitable position in the foundation pit drainage ditch using the mounting bracket 1, and the water supply pipe on the drainage pump 2 can be connected to the ground water collection device. Then, the waterproof solenoid valve 14 and the drainage pump 2 can be opened to extract the water flow in front of the mounting bracket 1. During suction, the filter cylinder 7 can block impurities that drift towards the water suction head 8 with the water flow, preventing them from directly entering the suction pipe 3 and the corrugated pipe 4, thereby reducing the probability of blockage. The filter cylinder 7 is a vertical cylinder, and the blocked impurities will accumulate at the bottom of the filter cylinder 7 due to gravity. At this time, the water flow can normally enter the filter cylinder 7 from the top of the outer ring, thereby reducing the impact of impurities remaining at the suction port on water suction. Furthermore, by activating the waterproof electric telescopic rod 6 to extend and retract its push rod, the suction height of the water suction head 8 can be adjusted according to the height of the blocked impurities, making it highly flexible in use.

[0028] Example 2

[0029] See Figure 2 and Figure 3 Furthermore, based on Embodiment 1, a waterproof solenoid valve 14 is provided at the connection between the suction pipe 3 near the front end of the mounting frame 1 and the drainage pump 2, and a waterproof solenoid valve 25 is provided at the connection between the suction pipe 3 near the rear end of the mounting frame 1 and the drainage pump 2. An installation groove 12 matching the mounting bolts is provided on both sides of one end of the impurity collection frame 10 near the mounting frame 1. A water leakage net 13 is provided at the front, rear, and bottom ends of the impurity collection frame 10. A handle is provided on the top of the impurity collection frame 10 near the second position. A pull groove is provided at the center and upper position of the front end of the impurity collection frame 10, and the bottom surface of the impurity collection frame 10 is flush with the bottom surface of the mounting frame 1.

[0030] Specifically, when the filter cartridge 7 in front of the mounting frame 1 is clogged with a large amount of impurities, since the filter cartridge 7 is installed at the impurity collection frame 10, the impurities near the filter cartridge 7 can be collected through the impurity collection frame 10. When cleaning is required, the waterproof solenoid valve 14 can be closed and the waterproof solenoid valve 25 can be opened to switch the water pumping direction. Afterwards, the personnel can unscrew the mounting nuts set at the mounting frame 1 and control the push rod of the waterproof electric telescopic rod 6 to retract to its limit distance. After the water suction filter head 8 is separated from the filter cartridge 7, the impurities can be removed. The collection box 10 is removed from the mounting frame 1. Then, the personnel can hold the handle on the collection box 10 to lift it up. The garbage collected in the collection box 10 can be poured out to a suitable location for cleaning. After cleaning, the mounting slot 12 can be locked back into the mounting bolts on the mounting frame 1 and the mounting nuts can be tightened again to complete the cleaning process. When there is a lot of impurities in the filter cartridge 7 behind the mounting frame 1, this step can be repeated. By alternating water pumping to clean impurities, the impact of the cleaning process on drainage efficiency can be reduced.

[0031] In actual operation, the drainage pump 2 can be fixed in a suitable position in the foundation pit drainage ditch by mounting frame 1, and the water delivery pipe on the drainage pump 2 can be connected to the ground water collection device. Then, the waterproof solenoid valve 14 and the drainage pump 2 can be opened to draw water in front of the mounting frame 1. When drawing water, the filter cylinder 7 can block the impurities that drift towards the water suction head 8 with the water flow, preventing them from directly entering the suction pipe 3 and the corrugated pipe 4, thereby reducing the probability of blockage.

[0032] Furthermore, the filter cylinder 7 is a vertical cylindrical design, and the impurities blocked will accumulate at the bottom of the filter cylinder 7 due to gravity. At this time, the water flow can enter the filter cylinder 7 normally from the top of the outer ring, so as to reduce the impact of impurities remaining at the water inlet on water absorption. In addition, by activating the waterproof electric telescopic rod 6 to extend and retract its push rod, the water absorption height of the water suction head 8 can be adjusted according to the height of the blocked impurities, which provides high flexibility in use.

[0033] When the filter cylinder 7 in front of the mounting bracket 1 is clogged with a lot of impurities, since the filter cylinder 7 is installed at the impurity collection frame 10, the impurities near the filter cylinder 7 can be collected through the impurity collection frame 10. When cleaning is required, the waterproof solenoid valve 14 can be closed and the waterproof solenoid valve 25 can be opened to switch the water pumping direction and facilitate alternating water suction.

[0034] Afterwards, personnel can unscrew the mounting nuts on the impurity collection frame 10 and the mounting bracket 1, and control the push rod of the waterproof electric telescopic rod 6 to retract to its limit distance. After the water suction filter head 8 is separated from the filter cylinder 7, the impurity collection frame 10 can be removed from the mounting bracket 1. Then, personnel can hold the handle on the impurity collection frame 10 to lift it up. Subsequently, the garbage collected in the impurity collection frame 10 can be poured out to a suitable location for cleaning. After cleaning, the mounting slot 12 can be locked back onto the mounting bolts on the mounting bracket 1, and the mounting nuts can be tightened again to complete the cleaning process. When there are many impurities in the filter cylinder 7 behind the mounting bracket 1, this step can be repeated. By alternating water pumping and cleaning, the impact of the cleaning process on drainage efficiency can be reduced.

[0035] Furthermore, the control components and modules used in the aforementioned drainage pump 2, waterproof solenoid valve 14, waterproof solenoid valve 2, and waterproof electric telescopic rod 6 are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foundation pit drainage structure, comprising a mounting frame (1), wherein a drainage pump (2) is mounted on the top of the mounting frame (1), characterized in that: Two suction pipes (3) are connected to the suction port on one side of the drainage pump (2), and a corrugated pipe (4) is connected to the end of the suction pipe (3) away from the drainage pump (2). Impurity collection frames (10) are installed at the lower front and rear ends of the mounting frame (1) by mounting bolts and mounting nuts. Filter cylinders (7) are detachably installed inside the two impurity collection frames (10) and at the end closest to the mounting frame (1) via threaded mounting seats (11). A water suction head (5) is connected to the end of the corrugated pipe (4) away from the water suction pipe (3). A water suction filter head (8) is connected to the bottom end of the water suction head (5). The water suction filter head (8) is located inside the filter cylinder (7). Waterproof electric telescopic rods (6) that are compatible with the corrugated pipe (4) are installed at both the front and rear ends of the mounting frame (1). The end of the drive shaft of the waterproof electric telescopic rod (6) is connected to the water suction head (5).

2. The foundation pit drainage structure according to claim 1, characterized in that: The outer ring of the filter cylinder (7) is provided with a number of sieve holes, and the outer ring of the water-absorbing filter head (8) is provided with an O-ring rubber ring (9) at the upper position. The outer ring of the O-ring rubber ring (9) is in contact with the inner wall of the filter cylinder (7), and the O-ring rubber ring (9) and the filter cylinder (7) are slidably connected.

3. The foundation pit drainage structure according to claim 2, characterized in that: The center points of the water-absorbing filter head (8), the water-absorbing head (5), and the filter cylinder (7) are on the same vertical line. There is an adjustment gap between the push rod of the waterproof electric telescopic rod (6) and the filter cylinder (7). When the push rod of the waterproof electric telescopic rod (6) is retracted to the limit, the bottom surface of the water-absorbing filter head (8) is higher than the top surface of the filter cylinder (7).

4. The foundation pit drainage structure according to claim 1, characterized in that: A waterproof solenoid valve 1 (14) is installed at the connection between the suction pipe (3) near the front end of the mounting frame (1) and the drainage pump (2), and a waterproof solenoid valve 2 (15) is installed at the connection between the suction pipe (3) near the rear end of the mounting frame (1) and the drainage pump (2).

5. A foundation pit drainage structure according to claim 1, characterized in that: The impurity collection frame (10) has a mounting groove (12) on both sides near the end of the mounting frame (1) that is compatible with the mounting bolts. The front, rear and bottom ends of the impurity collection frame (10) are provided with a water leakage net (13).

6. The foundation pit drainage structure according to claim 5, characterized in that: The impurity collection frame (10) has a handle at the top of the frame, a groove at the top center of the front end of the frame (10), and the bottom surface of the impurity collection frame (10) is flush with the bottom surface of the mounting frame (1).

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