underground drainage system with anti-clogging properties

Abstract

This utility model discloses an underground drainage device with anti-clogging performance, which can solve the problem of blockage in underground drainage pipes without using complex mechanisms. It includes a prefabricated well, a prefabricated pipe, and a prefabricated filter cylinder. The prefabricated well has a circular opening with a square cavity below it. At least two mounting holes are provided on the wall of the square cavity, and a bottom boss is provided on the bottom of the well. The lower end of the prefabricated filter cylinder, equipped with filter holes, sits and is inserted into the bottom boss, and the upper end of the prefabricated filter cylinder is engaged in the circular well opening. There is a gap between the prefabricated filter cylinder and the square cavity after installation. The prefabricated pipe is fixedly connected to the mounting holes. This utility model uses all prefabricated concrete components, meeting the special environmental requirements of water resistance, moisture resistance, and alkali resistance in underground engineering. Furthermore, all prefabricated components in the device are static parts after installation, without complex mechanical structures, allowing for lifelong maintenance-free use.

Description

Technical Field

[0001] This utility model relates to the field of underground pipeline anti-blockage design and construction technology. Background Technology

[0002] Municipal pipeline anti-clogging technology is a key measure to ensure the smooth flow of urban drainage systems and prevent urban flooding and environmental pollution. Depending on the anti-clogging method, existing technologies generally use rainwater grates, which are installed at rainwater collection inlets to intercept debris such as leaves, plastic bags, stones, and plastic bottles in the rainwater. Some organizations have also developed new anti-clogging devices with debris removal functions. For example, CN120174962A discloses an automatic cleaning mechanism for road sewage outlets, belonging to the field of sewage outlet siltation cleaning technology. It includes a silt removal box, a support frame mounted on the top of the silt removal box, alloy grates hinged to the ends of the support frame, a cover plate mounted on the front end of the silt removal box, and a three-dimensional grid frame mounted on the bottom of the silt removal box. This invention effectively prevents leaves, branches, and other debris from accumulating and obstructing sewage flow by incorporating a silt-removing screen assembly and a drainage sludge removal assembly. It forces impurities to pass through the screen in a three-dimensional manner, reducing obstruction at water flow gaps, improving instantaneous drainage capacity, preventing siltation, and actively removing silt and dirt from the sewage outlet. However, in actual operation, the maintenance and repair costs of the electromechanical device are relatively high, and there is no mains power supply near the rainwater wellhead, preventing its widespread application. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an underground drainage device with anti-clogging properties, aiming to solve the problem of blockage in underground drainage pipes without using complex mechanisms.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0005] An underground drainage device with anti-clogging performance includes a precast well, a precast pipe, and a precast filter cylinder made of precast concrete. The precast well has a square cavity below its circular opening. At least two mounting holes are provided on the wall of the square cavity, and a bottom boss is provided on the bottom of the precast well. The lower end of the precast filter cylinder, equipped with filter holes, sits and is inserted into the bottom boss, and the upper end of the precast filter cylinder is engaged within the circular opening. A gap exists between the installed precast filter cylinder and the square cavity. The precast pipe is fixedly connected to the mounting holes.

[0006] Furthermore, the bottom boss has a height of at least 3 centimeters and has a chamfer.

[0007] Furthermore, the precast pipe is connected to the mounting hole by high-strength bolts, and the mating surface between the precast pipe and the mounting hole is filled with waterproof adhesive mortar.

[0008] Furthermore, a lifting ring is provided on the prefabricated filter cartridge.

[0009] Furthermore, it also includes a prefabricated well ring, which is snapped and fixed at the wellhead of the prefabricated well, and a rain grate is installed on the upper surface of the prefabricated well ring.

[0010] Furthermore, the prefabricated well ring has an annular groove, through which it is snapped onto the top of the prefabricated well.

[0011] Furthermore, the precast pipe is a reinforced concrete precast pipe.

[0012] Furthermore, the prefabricated filter cartridge is a prefabricated steel fiber reinforced concrete component.

[0013] Furthermore, the gap is one-quarter to one-third of the inner diameter of the prefabricated pipe.

[0014] Furthermore, the filter holes on the prefabricated filter cartridge are one of round holes, square holes, elliptical holes, or elongated holes.

[0015] The beneficial effects of this utility model are:

[0016] This utility model consists entirely of precast concrete components, which meet the special environmental requirements of water resistance, moisture resistance, and alkali resistance in underground engineering. Moreover, all the precast components installed in this device are static parts without complex mechanical structures, and can be used without maintenance for life. Only periodic cleaning of debris inside the precast filter cartridge is required. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention, showing the assembled state.

[0018] Figure 2 This is a vertical sectional view of the present invention.

[0019] Figure 3 This is a horizontal sectional view of the present invention.

[0020] Figure 4 This is a partial cross-sectional view of the present invention, in which the prefabricated well 10 is partially cut open for display.

[0021] Figure 5 This is a schematic diagram of the assembly and disassembly of this utility model.

[0022] Figure 6 This is a three-dimensional view of the full cross-section of prefabricated well 10.

[0023] In the picture:

[0024] 10. Precast well; 11. Square cavity; 12. Circular wellhead; 13. Bottom boss; 14. Mounting hole.

[0025] 20. Precast well rings,

[0026] 30. Precast pipe; 31. Installation section; 32. High-strength bolts.

[0027] 40. Prefabricated filter cartridge; 41. Filter holes. Detailed Implementation

[0028] An underground drainage device with anti-clogging properties is assembled entirely from precast concrete components. It is an improvement on existing precast components and features water resistance, alkali resistance, and ease of construction.

[0029] This embodiment is described in conjunction with the appendix to the instruction manual. Figure 1 To be continued Figure 6 A detailed explanation will be provided.

[0030] The device includes a prefabricated well 10, a prefabricated well ring 20, a prefabricated pipe 30, and a prefabricated filter cartridge 40, and is constructed using a prefabricated assembly method for geotechnical work. The prefabricated well 10 is an open-top, sealed-bottom prefabricated structure. Specifically, the lower space of the prefabricated well 10 is a square cavity 11, which also serves as the drainage chamber for the drainage pipe. This square cavity has a significantly larger size to ensure sufficient drainage space, and its square structure also facilitates the connection and installation of the prefabricated pipe 30. Above is a circular well opening 12, with a transition area between the two, forming an integrated structure with a round upper section and a lower lower section. The well opening above the prefabricated well 10 serves as a drain outlet, through which the prefabricated filter cartridge 40 is hoisted and installed. The bottom of the prefabricated well is a flat plane. A bottom boss 13 is provided on the bottom of the prefabricated well 10. The bottom boss 13 has a height of 5 cm and a chamfer. The diameter of the bottom boss 13 is approximately the same as the inner diameter of the prefabricated filter cartridge 40, and it is used for positioning and constraining the lower end of the prefabricated filter cartridge 40. The prefabricated well 10 has two mounting holes 14 for prefabricated pipes 30. These mounting holes 14 are circular prefabricated holes, and bolt holes are formed in these holes by drilling for the installation and fixing of the prefabricated pipes 30.

[0031] The prefabricated well ring 20 is located at the top of the prefabricated well 10, and an annular groove is provided in the prefabricated well ring 20. It is snapped into the top of the prefabricated well 10 through the annular groove. After installation, the prefabricated well ring 20 is used for the installation of well covers or rain grates, providing an installation base.

[0032] The precast pipe 30, which is a reinforced concrete precast pipe 30, has an installation section 31 at the end. The installation section 31 is installed and snapped into the installation hole 14 of the precast well 10. Waterproof mortar is filled between the two and high-strength bolts 32 are used for auxiliary fastening.

[0033] The aforementioned prefabricated filter cartridge 40 is a prefabricated steel fiber reinforced concrete component with a uniform diameter design that allows for vertical penetration. The lower end of the prefabricated filter cartridge 40 rests on the bottom protrusion 13 of the prefabricated well 10, and the protrusion 13 facilitates rapid guidance and circumferential positioning of the prefabricated filter cartridge 40 during installation. After installation, the upper end of the prefabricated filter cartridge 40 is engaged with the circular well opening 12. In this embodiment, the prefabricated filter cartridge 40 has a wall thickness of 3 cm, a height of approximately 1.2 meters, and a weight slightly exceeding 300 kg. Under its own weight, the prefabricated filter cartridge 40 is stably positioned within the prefabricated well 10. This installation method offers advantages such as quick installation and high stability; general water flow cannot impact the prefabricated filter cartridge 40, allowing it to operate for 10 to 20 years without maintenance.

[0034] After installation, there is a sufficiently large gap between the outer wall of the prefabricated filter cartridge 40 and the square cavity 11. In this embodiment, the gap is one-quarter to one-third of the inner diameter of the prefabricated pipe 30, forming the main channel for water flow.

[0035] The filter holes 41 on the prefabricated filter cartridge 40 mentioned above are round holes, square holes or oval holes with a diameter greater than 5 mm and less than 2 cm, or they can be special structures such as elongated holes.

[0036] Furthermore, a lifting ring is provided at the upper end of the prefabricated filter cartridge 40 for auxiliary lifting of the prefabricated filter cartridge 40.

[0037] The construction process for this technology is as follows:

[0038] First, the precast well 10 is hoisted and installed using a crane truck, with leveling performed during installation. Next, the precast pipe 30 is hoisted and installed. During installation, a small amount of waterproof mortar is applied to the installation section 31 of the precast pipe 30 and / or the installation hole 14 of the precast well 10, and the installation section 31 is inserted into the installation hole 14. High-strength bolts 32 are used to connect the precast well 10 and the precast pipe 30 inside the precast well 10, and the installation is completed after at least 24 hours of curing to ensure the waterproof mortar is fully cured. After all precast wells 10 and precast pipes 30 are installed, the soil layer is backfilled and compacted. Then, the precast well ring 20 is hoisted and installed. After the precast well ring 20 is installed, the precast filter cylinder 40 is hoisted and installed. During the hoisting process, it is lowered slowly, and the lower end of the precast filter cylinder 40 is slowly inserted into the bottom boss 13 of the well. The hoisting belt is removed and the lower end of the precast filter cylinder 40 is clamped at the bottom boss 13 of the well, and the upper part is clamped at the circular well opening 12. Finally, a rain grate is installed on the upper surface of the precast well ring, and the upper surface of the rain grate is flush with the road surface.

[0039] The anti-clogging principle of this device is as follows:

[0040] During heavy rain or other periods of heavy drainage, large amounts of sewage collect at the wellhead and fall into the prefabricated filter cartridge 40, where it is filtered. Large, blocky, or rod-shaped debris and sludge are retained within the filter cartridge 40. The water then flows out through the filter holes 41 on the filter cartridge 40 and is eventually discharged through the prefabricated pipe 30. Regular cleaning of the filter cartridge 40 is sufficient. During non-heavy rain conditions, the water volume in the drainage pipe is relatively small, and most of the water from the upstream prefabricated pipe 30 bypasses the filter cartridge 40 and flows through from the outside. During periods of heavy rainfall, some water will flow through the filter cartridge 40.

[0041] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, all modifications and improvements to the present utility model by those skilled in the art should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An underground drainage device having a clogging prevention performance, comprising a precast well (10) of a concrete precast molding, a precast pipe (30), and a precast filter cartridge (40), characterized in that: The prefabricated well (10) has a square cavity (11) below the circular wellhead (12). At least two mounting holes (14) are provided on the well wall of the square cavity (11), and a bottom boss (13) is provided on the bottom of the prefabricated well. The lower end of the prefabricated filter cylinder (40) with filter holes (41) is placed and inserted into the bottom boss (13), and the upper end of the prefabricated filter cylinder (40) is inserted into the circular wellhead (12). There is a gap between the prefabricated filter cylinder (40) and the square cavity (11) after installation. The prefabricated pipe (30) is fixedly connected to the mounting holes (14).

2. The underground drain device with a clogging prevention function according to claim 1, characterized by, The bottom boss (13) has a height of at least 3 cm and has a chamfer.

3. The underground drain device with a clogging prevention function according to claim 1, characterized by, The precast pipe (30) is connected to the mounting hole (14) by high-strength bolts, and the mating surface of the precast pipe (30) and the mounting hole (14) is filled with waterproof adhesive mortar.

4. The underground drain device with a clogging prevention function according to claim 1, characterized by, A lifting ring is provided on the prefabricated filter cartridge (40).

5. The underground drainage device with anti-clogging performance according to claim 1, characterized in that, It also includes a prefabricated well ring (20), which is snapped and fixed at the wellhead of the prefabricated well, and a rain grate is installed on the upper surface of the prefabricated well ring.

6. The underground drain device with a clogging prevention function according to claim 5, wherein The prefabricated well ring (20) has an annular groove, which is used to engage with the top of the prefabricated well (10).

7. The underground drain device with a clogging prevention function according to claim 1, wherein The precast pipe (30) is a reinforced concrete precast pipe (30).

8. The underground drain device with a clogging prevention function according to claim 1, wherein The precast filter cartridge (40) is a precast steel fiber reinforced concrete component.

9. The underground drain device with a clogging prevention function according to claim 1, wherein The gap is one-quarter to one-third of the inner diameter of the precast pipe (30).

10. The underground drain device with a clogging prevention function according to claim 1, characterized by, The filter holes (41) on the prefabricated filter cartridge (40) are one of round holes, square holes, elliptical holes or elongated holes.

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