Drainage device for foundation pit construction

Abstract

The utility model discloses a foundation pit construction drainage device which comprises a water suction pump, a water pipe fixedly penetrates through the input end of the water suction pump, a connecting pipe fixedly penetrates through the other end of the water pipe, a water inlet barrel fixedly penetrates through the bottom of the connecting pipe, and three supporting type buoy assemblies are evenly and fixedly connected to the outer surface of the water inlet barrel. Three through holes penetrating into the water inlet cylinder are formed in the bottom of the water inlet cylinder, a plurality of filtering assemblies penetrating into the through holes are arranged on the outer surface of the water inlet cylinder, and the outer surface of the water inlet cylinder is sleeved with a limiting ring in a sealed and threaded mode. According to the utility model, the three supporting type buoy assemblies are linked with the water inlet barrel, so that the height of the water inlet barrel can be automatically adjusted along with the change of the water level, and the optimal water absorption position is always kept. A stabilizing support in the buoy assembly not only can effectively prevent the water inlet barrel from rollover, but also can support the water inlet barrel when the device is static, and blockage or damage caused by direct contact with the bottom of the foundation pit is avoided.

Description

Technical Field

[0001] This utility model relates to the field of drainage device technology, and in particular to a drainage device for foundation pit construction. Background Technology

[0002] An excavation pit is a pit dug at the designed location of a building's foundation, according to the base elevation and plan dimensions, for the construction of underground structures. Its core purpose is to provide construction space for the foundation or underground engineering, and stability must be ensured through methods such as support and dewatering.

[0003] In the construction process, foundation pit drainage is a crucial step in ensuring construction safety and quality. Traditional foundation pit drainage methods primarily employ stationary submersible pumps with filters for pumping water. However, this method has several shortcomings in practical application:

[0004] Poor water level adaptability: As the water level in the foundation pit changes constantly with the construction progress and weather conditions, fixed pumping devices often experience problems such as the suction port being exposed when the water level drops, leading to empty pumping, or the inlet being submerged when the water level rises, causing excessive silt to be sucked in, which seriously affects drainage efficiency and equipment lifespan.

[0005] Filter screens are prone to clogging: The water in the foundation pit usually contains a lot of mud, sand and impurities. Traditional filter screens have a simple structure and lack effective self-cleaning function, so they are prone to clogging. Frequent shutdowns for cleaning are required, which not only increases maintenance costs but also delays the construction period.

[0006] Insufficient stability: Some improvement solutions adopt a float design to make the water intake float with the water level, but the existing float structure often has problems with poor stability and easy tilting, resulting in uneven water intake. In addition, it lacks effective bottom support, and the water intake is easy to sink into the silt when the machine is stopped, which affects normal operation when restarting.

[0007] Inconvenient maintenance: The filters of traditional drainage devices are mostly fixed, and the entire device needs to be disassembled for cleaning or replacement, which is cumbersome and particularly inconvenient in special construction environments such as deep foundation pits.

[0008] Therefore, a drainage device for foundation pit construction is proposed. Utility Model Content

[0009] This utility model is a drainage device for foundation pit construction proposed to overcome the shortcomings of the existing technology.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: a drainage device for foundation pit construction, including a water pump, a water pipe fixedly connected to the input end of the water pump, a connecting pipe fixedly connected to the other end of the water pipe, a water inlet cylinder fixedly connected to the bottom of the connecting pipe, and three support-type float assemblies evenly fixedly connected to the outer surface of the water inlet cylinder.

[0011] The bottom of the water inlet cylinder has three through holes extending into the interior. The outer surface of the water inlet cylinder has multiple filter components extending into the through holes. The outer surface of the water inlet cylinder is sealed with a limit ring, and the filter components are located inside the limit ring.

[0012] A heat dissipation shell is fixedly connected inside the water inlet cylinder. A scraping component is installed between the heat dissipation shell and the water inlet cylinder, and the scraping component is matched with the filter component.

[0013] Furthermore, all three of the aforementioned support-type pontoon assemblies include a fixing ring, and the fixing ring is fixedly connected to the water inlet cylinder. The inner surface of the fixing ring is fixedly connected to the pontoon body, and the bottom of the pontoon body is fixedly connected to a stabilizing bracket. This structural design enables the pontoon assembly and the water inlet cylinder to form a rigid connection, ensuring uniform buoyancy distribution. The stabilizing bracket not only prevents the pontoon from tilting, but also provides stable support when the device is stationary, preventing the water inlet cylinder from directly contacting the silt at the bottom of the pit.

[0014] Furthermore, all three filter components include a frame that extends through the outer wall of the inlet cylinder to the interior of the through hole and is sealed and inserted into the inner wall of the inlet cylinder and the through hole. A filter plate is fixedly connected to the inner surface of the frame. This modular design facilitates quick disassembly and maintenance. When the filter plate is clogged, it can be replaced individually without disassembling the entire inlet cylinder, which greatly improves maintenance efficiency and reduces downtime.

[0015] Furthermore, the inner surface of the limiting ring is provided with a threaded section, and the threaded section is threadedly sleeved on the outer surface of the water inlet cylinder. Sealing rings are provided above and below the threaded section, and the sealing rings are fixedly connected to the limiting ring and sealed and fitted to the outer wall of the water inlet cylinder. The threaded connection, combined with the double sealing design of the upper and lower sealing rings, can ensure the sealing performance of the threaded connection and prevent sand and gravel from affecting the threaded connection.

[0016] Furthermore, the heat dissipation housing includes a stainless steel housing, which is fixedly installed inside the water inlet cylinder. Multiple heat dissipation fins are fixedly connected to the outer surface of the stainless steel housing. The stainless steel material combined with the multi-fin structure significantly improves heat dissipation efficiency, effectively reduces the operating temperature of the motor, avoids equipment failure due to overheating, and extends the service life of the motor.

[0017] Furthermore, the scraping assembly includes a motor, which is fixedly installed inside the stainless steel housing. The drive end of the motor is fixedly connected to a rotating shaft, which extends through the inner wall of the stainless steel housing to the bottom of the water inlet cylinder and is sealed to the stainless steel housing. The motor drive ensures that the scraper operates continuously and stably, avoiding the inconvenience of manual cleaning.

[0018] Furthermore, a scraper is fixedly connected to one side of the outer surface of the rotating shaft, and the scraper is attached to the bottom of the filter plate. The close fit between the scraper and the filter plate ensures the cleaning effect, effectively scrapes away the mud and impurities accumulated on the surface of the filter plate, maintains the permeability of the filter plate, and significantly extends the service life of the filter plate.

[0019] The beneficial effects of this utility model are:

[0020] In use, this utility model discloses a drainage device for foundation pit construction. By linking three support-type float assemblies with the inlet cylinder, the inlet cylinder automatically adjusts its height according to water level changes, always maintaining the optimal water intake position. The stabilizing brackets within the float assemblies not only effectively prevent the inlet cylinder from tipping over, but also support it when the device is stationary, preventing it from directly contacting the bottom of the foundation pit and causing blockage or damage. Combined with the evenly distributed three through-hole design, drainage efficiency is significantly improved, making it particularly suitable for deep foundation pit environments with large water level fluctuations. This solves the problem of low pumping efficiency caused by the easy exposure or submersion of traditional fixed water intakes.

[0021] In use, this utility model, a drainage device for foundation pit construction, innovatively employs a collaborative design of a detachable filter assembly and a rotating scraper assembly. A motor-driven scraper periodically cleans the silt and impurities from the filter plate surface, while the heat dissipation shell effectively dissipates the heat generated by the generator. The threaded sealing structure of the limiting ring facilitates quick disassembly and maintenance of the filter screen and avoids the problem of frequent clogging requiring machine shutdown for cleaning, making it particularly suitable for foundation pit drainage operations with high silt content. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 : A perspective view of this utility model;

[0024] Figure 2 : A schematic diagram of the connection between the water inlet cylinder and the support-type float assembly of this utility model;

[0025] Figure 3 : A three-dimensional view of the water inlet cylinder of this utility model;

[0026] Figure 4 : A cross-sectional view of the water inlet cylinder of this utility model;

[0027] Figure 5 : A sectional view of the limiting ring of this utility model.

[0028] The attached figures are labeled as follows:

[0029] 1. Water pump; 2. Water pipe; 3. Float body; 4. Connecting pipe; 5. Inlet cylinder; 6. Fixing ring; 7. Stabilizing bracket; 8. Filter plate; 9. Rotating shaft; 10. Limiting ring; 11. Scraper; 12. Through hole; 13. Stainless steel shell; 14. Motor; 15. Heat dissipation fins; 16. Frame; 17. Threaded section; 18. Sealing ring. Detailed Implementation

[0030] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1 to 5 As shown, a drainage device for foundation pit construction is disclosed, including a water pump 1. A water pipe 2 is fixedly connected to the input end of the water pump 1, and a connecting pipe 4 is fixedly connected to the other end of the water pipe 2. A water inlet cylinder 5 is fixedly connected to the bottom of the connecting pipe 4. Three support-type float assemblies are uniformly fixedly connected to the outer surface of the water inlet cylinder 5. Each of the three support-type float assemblies includes a fixing ring 6, and the fixing ring 6 is fixedly connected to the water inlet cylinder 5. A float body 3 is fixedly connected to the inner surface of the fixing ring 6, and a stabilizing bracket 7 is fixedly connected to the bottom of the float body 3.

[0032] The bottom of the water inlet cylinder 5 has three through holes 12 extending into the interior. The outer surface of the water inlet cylinder 5 has multiple filter components extending into the through holes 12. Each of the three filter components includes a frame 16, which extends through the outer wall of the water inlet cylinder 5 into the interior of the through holes 12 and is sealed and inserted into the inner wall of the water inlet cylinder 5 and the through holes 12. A filter plate 8 is fixedly connected to the inner surface of the frame 16, and a matching sealing gasket is fixedly connected to the bottom of the frame 16. The sealing gasket is sealed and fitted to the water inlet cylinder 5 and the through holes 12, which facilitates the sealed installation of the frame 16.

[0033] The outer surface of the water inlet cylinder 5 is sealed with a limiting ring 10, and the filter assembly is located inside the limiting ring 10. The inner surface of the limiting ring 10 is provided with a threaded section 17, and the threaded section 17 is threadedly fitted onto the outer surface of the water inlet cylinder 5. Sealing rings 18 are provided above and below the threaded section 17, and the sealing rings 18 are fixedly connected to the limiting ring 10 and sealed against the outer wall of the water inlet cylinder 5. An external thread is provided on the outer surface of the water inlet cylinder 5, and the external thread matches the threaded section 17. The thread helix angle of the external thread is less than the friction angle, so that the external thread has a self-locking ability and can prevent it from shifting due to vibration or load.

[0034] A heat dissipation shell is fixedly connected inside the water inlet cylinder 5. A scraping assembly is installed between the heat dissipation shell and the water inlet cylinder 5, and the scraping assembly matches the filter assembly. The heat dissipation shell includes a stainless steel shell 13, which is fixedly installed inside the water inlet cylinder 5. Multiple heat dissipation fins 15 are fixedly connected to the outer surface of the stainless steel shell 13. The scraping assembly includes a motor 14, which is fixedly installed inside the stainless steel shell 13. A rotating shaft 9 is fixedly connected to the drive end of the motor 14. The rotating shaft 9 extends through the inner wall of the stainless steel shell 13 to the bottom of the water inlet cylinder 5 and is sealed to the stainless steel shell 13. A scraper 11 is fixedly connected to one side of the outer surface of the rotating shaft 9 and fits against the bottom of the filter plate 8. A sealing ring is sealed to the outer surface of the rotating shaft 9 and is fixedly connected to the stainless steel shell 13 to ensure the sealing of the connection between the rotating shaft 9 and the stainless steel shell 13.

[0035] Working principle: When put into use, a drain pipe is installed at the outlet of the water pump 1. The outlet of the drain pipe is far away from the foundation pit and placed in a suitable position to prevent water from flowing back into the foundation pit.

[0036] When the device is put into operation, the three supported pontoon assemblies use the buoyancy of the pontoon body 3 to automatically raise and lower the water inlet cylinder 5 according to the water level in the pit. The fixing ring 6 ensures a rigid connection between the pontoon and the water inlet cylinder 5, and the stabilizing bracket 7 prevents tilting during operation and supports the water inlet cylinder 5 to prevent it from contacting the bottom of the pit when the device is stopped. This design ensures that the water inlet cylinder 5 is always kept at the optimal water intake depth, preventing it from being exposed and causing dry pumping due to a drop in water level, and preventing it from sucking in too much silt due to an excessively high water level.

[0037] Water from the foundation pit enters the device through three through holes 12 at the bottom of the inlet cylinder 5. The water first passes through the filter plate 8 for filtration, and the sealed connection between the frame 16 and the through holes 12 ensures that all incoming water is filtered. The filtered clean water is discharged by the water pump 1 through the connecting pipe 4 and the water pipe 2. The limiting ring 10 is reliably fixed by the engagement of the threaded section 17 with the external thread of the inlet cylinder 5, and the upper and lower sealing rings 18 form a double seal. The specially designed thread helix angle ensures a self-locking function and prevents loosening caused by vibration.

[0038] When impurities accumulate on the surface of the filter plate 8, the motor 14 drives the rotating shaft 9 to rotate, which in turn drives the scraper 11 to scrape and clean the bottom of the filter plate 8. The heat dissipation system, consisting of the stainless steel housing 13 and the heat dissipation fins 15, continuously dissipates heat from the motor 14.

[0039] It should be noted that, in actual use, an existing controller can be added. The controller is electrically connected to the water pump 1 and the motor 14 to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that can be achieved by this hardware structure improvement in combination with common knowledge. Secondly, all components in this application have undergone anti-corrosion treatment or selected anti-corrosion materials to ensure long-term use in humid environments.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A drainage device for foundation pit construction, comprising a water pump (1), characterized in that: The water pump (1) has a water pipe (2) fixedly connected to its input end, and a connecting pipe (4) fixedly connected to the other end of the water pipe (2). A water inlet cylinder (5) is fixedly connected to the bottom of the connecting pipe (4), and three support float assemblies are evenly fixedly connected to the outer surface of the water inlet cylinder (5). The bottom of the water inlet cylinder (5) is provided with three through holes (12) that penetrate into the interior. The outer surface of the water inlet cylinder (5) is provided with multiple filter components that penetrate into the through holes (12). The outer surface of the water inlet cylinder (5) is sealed with a limit ring (10) and the filter components are located inside the limit ring (10). The water inlet cylinder (5) is fixedly connected to a heat dissipation shell. A scraping component is installed between the heat dissipation shell and the water inlet cylinder (5), and the scraping component is matched with the filter component.

2. The foundation pit construction drainage device according to claim 1, characterized in that: All three of the supported float assemblies include a fixing ring (6), and the fixing ring (6) is fixedly connected to the water inlet cylinder (5). The inner surface of the fixing ring (6) is fixedly connected to the float body (3), and the bottom of the float body (3) is fixedly connected to a stabilizing bracket (7).

3. The foundation pit construction drainage device according to claim 2, characterized in that: All three filter components include a frame (16), and the frame (16) extends through the outer wall of the inlet cylinder (5) into the interior of the through hole (12), and is sealed and inserted into the inner wall of the inlet cylinder (5) and the through hole (12). A filter plate (8) is fixedly connected to the inner surface of the frame (16).

4. A foundation pit construction drainage device according to claim 3, characterized in that: The inner surface of the limiting ring (10) is provided with a threaded section (17), and the threaded section (17) is threadedly sleeved on the outer surface of the water inlet cylinder (5). A sealing ring (18) is provided above and below the threaded section (17), and the sealing ring (18) is fixedly connected to the limiting ring (10) and sealed and fitted to the outer wall of the water inlet cylinder (5).

5. A foundation pit construction drainage device according to claim 4, characterized in that: The heat dissipation shell includes a stainless steel shell (13), and the stainless steel shell (13) is fixedly installed inside the water inlet cylinder (5). Multiple heat dissipation fins (15) are fixedly connected to the outer surface of the stainless steel shell (13).

6. A foundation pit construction drainage device according to claim 5, characterized in that: The scraping assembly includes a motor (14), which is fixedly installed inside the stainless steel housing (13). The drive end of the motor (14) is fixedly connected to a rotating shaft (9), which extends through the inner wall of the stainless steel housing (13) to the bottom of the water inlet cylinder (5) and is sealed to the stainless steel housing (13).

7. A foundation pit construction drainage device according to claim 6, characterized in that: A scraper (11) is fixedly connected to one side of the outer surface of the rotating shaft (9), and the scraper (11) is attached to the bottom of the filter plate (8).

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