Road construction drainage structure

Abstract

The utility model relates to drainage structure technical field, and disclose a kind of road construction drainage structure, comprising: drainage pipeline, first filter screen tray and second filter screen tray, the second filter screen tray is embedded in the top of first filter screen tray, the drainage pipeline is assembled in the water inlet inner chamber of drainage pipeline, and clamping mechanism is assembled between first filter screen tray and second filter screen tray, clamping mechanism includes first connecting disc and second connecting disc, the first connecting disc is connected with second filter screen tray and first filter screen tray respectively, and the bottom of first connecting disc is evenly provided with clamping block.The road construction drainage structure, the quick disengagement and re-engagement of clamping block and clamping groove are utilized, the filtration area is adjusted in time without disassembling pipeline, can improve drainage efficiency by expanding effective filter hole area under extreme working conditions such as heavy rain, avoid the risk of ponding, can also maintain fine filtration state when normal water volume, effectively intercept construction debris.

Description

Technical Field

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

[0002] In the field of road construction, the design of temporary drainage systems must balance the efficiency of construction wastewater discharge with the need for impurity filtration. Especially when dealing with sudden heavy rainfall or continuous operation, existing drainage structures generally suffer from insufficient functional adaptability. Traditional drainage devices mostly adopt fixed filter structures, whose filtration area and pore size parameters cannot be dynamically adjusted according to the actual water volume during the construction period. This leads to the risk of water accumulation due to drainage delays during heavy rain, while excessive interception affects the flow efficiency during normal water volumes. This contradiction directly increases the operational difficulty of on-site drainage management.

[0003] Existing technical solutions mostly rely on single-layer filters to intercept impurities. This structure exposes multiple defects when dealing with complex construction environments: First, single-layer filters cannot form a gradient filtration mechanism. Large particles of impurities and fine dirt mix and accumulate, easily causing the filter to clog quickly, forcing operators to frequently stop work for cleaning. Filter replacement requires complete disassembly of the pipeline, which is not only time-consuming but also poses a risk of seal failure. Fixed filter pore sizes are difficult to match the filtration needs of different construction stages. When the filtration accuracy needs to be adjusted, the entire drainage assembly must be replaced, which complicates the on-site assembly process. The equipment adaptability and ease of maintenance are difficult to meet the requirements of efficient construction. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a road construction drainage structure to solve the technical problems of fixed filter screen apertures being difficult to match the filtration needs of different construction stages, requiring the replacement of the entire drainage assembly when filtration accuracy needs to be adjusted, leading to complicated on-site assembly processes, and making it difficult to meet the requirements of efficient construction in terms of equipment adaptability and maintenance convenience.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a road construction drainage structure, comprising: a drainage pipe, a first filter screen and a second filter screen, the second filter screen being embedded in the top of the first filter screen, the drainage pipe being assembled in the inlet cavity of the drainage pipe, a snap-fit ​​mechanism being assembled between the first filter screen and the second filter screen, the snap-fit ​​mechanism comprising a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate being respectively connected to the second filter screen and the first filter screen, the bottom of the first connecting plate being evenly distributed with locking blocks, the upper end of the second connecting plate being provided with locking grooves adapted to the locking blocks, a return spring being evenly distributed between the first connecting plate and the second connecting plate, and a telescopic rubber protective sleeve being assembled between the first connecting plate and the second connecting plate, the telescopic rubber protective sleeve being disposed outside the return spring.

[0008] Preferably, the top of the first connecting plate is provided with a square groove, and the bottom of the inner cavity of the square groove is equipped with a handle. The handle is hinged to the side wall of the square groove by a pin, and the opening angle is limited to 0°-90°. Its grip part is provided with anti-slip texture. When operating with one hand, the lifting force applied is amplified to 3 times the axial separation force through the lever principle.

[0009] Preferably, the first filter screen is equipped with a frame, which is connected to the drain pipe by bolts, and a sealing gasket is installed between the bolts and the drain pipe. The contact surface between the frame and the drain pipe adopts a 30° conical surface fit. The bolt preload causes the conical surface to generate a normal component force, which, together with the silicone sealing gasket, achieves an IP68 dustproof and waterproof seal.

[0010] Preferably, filter plates are embedded on the top of both the first and second filter discs. Filter holes are opened on the top of the filter plates. The filter holes of the upper filter plate are arranged in a regular hexagonal pattern with a porosity of 45%, while the lower filter plate adopts an interlaced diamond-shaped hole array with a porosity of 30%, forming a dual-stage filtration system. The total interception efficiency is increased by 60% compared to a single-layer filter.

[0011] Preferably, the top of the second connecting plate is provided with an annular groove, which is connected to the return spring and the telescopic rubber protective sleeve. The bottom of the annular groove is provided with four evenly distributed guide holes. When water accumulates inside the telescopic rubber protective sleeve, the water flows out radially along the second connecting plate through the guide holes, thus avoiding electrochemical corrosion of the spring assembly.

[0012] Preferably, the bottom of the first connecting plate is evenly distributed with guide pins, which are inserted into the top of the second connecting plate. The top of the second connecting plate has twelve sets of vertical slots for accommodating the guide pins, with at least four sets of guide pins. The ends of the guide pins are chamfered, and the entrances of the vertical slots are provided with flared guide structures to allow a radial installation deviation of ±1.5mm. The guide pins can be completely pulled out from the inside of the vertical slots. After rotating the first connecting plate, the guide pins are returned to their original positions.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a road construction drainage structure with the following features:

[0015] Beneficial effects:

[0016] The road construction drainage structure achieves dynamic adjustment of drainage volume through the coordinated design of double-layer filter screens and snap-fit ​​mechanism. When the flow rate of construction sewage changes, the operator can change the overlapping area of ​​filter holes by lifting and rotating the second filter screen. By utilizing the quick disengagement and re-engagement of the snap-fit ​​block and slot, the filtration area can be adjusted instantly without disassembling the pipe. Under extreme conditions such as heavy rain, the drainage efficiency can be improved by expanding the effective filter hole area to avoid the risk of water accumulation. At normal water volume, it can maintain a fine filtration state to effectively intercept construction debris.

[0017] The dual-layer filter structure forms a gradient filtration system. The outer coarse filter intercepts large particles, while the inner fine filter blocks fine contaminants. This layered filtration mechanism improves filtration efficiency while reducing the load on individual filter layers, thus lowering the frequency of cleaning and maintenance. The overall structure adopts a modular nested design, allowing the filter discs to be independently disassembled and replaced to adapt to different particle size filtration needs. During construction and installation, only the first filter disc needs to be fixed to complete the overall positioning, greatly simplifying the on-site assembly process. Attached Figure Description

[0018] Figure 1 This is a front view of the present utility model;

[0019] Figure 2 This is a schematic diagram of the external appearance of the first filter screen of this utility model;

[0020] Figure 3 This is a partial cross-sectional view of the first filter screen of this utility model;

[0021] Figure 4 This is a front sectional view of the snap-fit ​​mechanism of this utility model.

[0022] In the diagram: 1. Drainage pipe; 2. First filter screen; 21. Frame; 3. Second filter screen; 31. Filter plate; 4. Snap-fit ​​mechanism; 41. First connecting plate; 42. Second connecting plate; 43. Guide post; 44. Return spring; 45. Locking block; 46. Telescopic rubber protective sleeve; 47. Square groove; 48. Handle. 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] This utility model provides a technical solution, please refer to Figure 1 and Figure 2 A road construction drainage structure includes: a drainage pipe 1, a first filter screen 2, and a second filter screen 3. The second filter screen 3 is embedded in the top of the first filter screen 2. The drainage pipe 1 is assembled into the inlet cavity of the drainage pipe 1. A locking mechanism 4 is installed between the first filter screen 2 and the second filter screen 3. The locking mechanism 4 includes a first connecting plate 41 and a second connecting plate 42. The first connecting plate 41 and the second connecting plate 42 are respectively connected to the second filter screen 3 and the first filter screen 2. The bottom of the first connecting plate 41 is evenly distributed with locking blocks 45. The upper end of the second connecting plate 42 is provided with a locking groove adapted to the locking blocks 45. The locking blocks 45 achieve axial locking through the interference fit between the wedge-shaped inclined surface and the locking groove. When the water flow impacts, the return spring 44 is compressed to generate a reverse force, which is transmitted through the contact between the locking blocks 45 and the inclined surface of the locking groove. The locking mechanism 41 and the second connecting plate 42 are evenly distributed with locking blocks 45. A return spring 44 is provided, which adopts a conical spiral structure. The large end is fixed to the surface of the second connecting plate 42, and the small end contacts the first connecting plate 41 to ensure that the linear stiffness characteristics are maintained during compression. A telescopic rubber protective sleeve 46 is assembled between the first connecting plate 41 and the second connecting plate 42. The telescopic rubber protective sleeve 46 is set outside the return spring 44. The surface of the telescopic rubber protective sleeve 46 is provided with annular reinforcing ribs. Axial deformation is achieved through a bellows-type telescopic structure. At the same time, its inner wall is coated with Teflon coating to reduce frictional resistance with the spring. An annular groove is opened at the bottom of the inner cavity of the second connecting plate 42. A track block is slidably connected inside the annular groove. The track block is connected to the bottom of the return spring 44. The return spring 44 can rotate inside the annular groove through the track block, and then rotate with the first connecting plate 41. At the same time, the return spring 44 has the ability to deform.

[0025] Please see Figure 3 and Figure 4 The top of the first connecting plate 41 is provided with a square groove 47, and the bottom of the inner cavity of the square groove 47 is equipped with a handle 48. The handle 48 is hinged to the side wall of the square groove 47 by a pin, and the opening angle is limited to 0°-90°. Its grip part is provided with anti-slip texture. When operating with one hand, the lifting force applied is amplified to 3 times the axial separation force through the lever principle.

[0026] The first filter screen 2 is equipped with a frame 21 on its outside. The frame 21 is connected to the drain pipe 1 by bolts, and a sealing gasket is installed between the bolts and the drain pipe 1. The contact surface between the frame 21 and the drain pipe 1 adopts a 30° conical surface fit. The bolt pre-tightening force causes the conical surface to generate a normal component force, which, together with the silicone sealing gasket, achieves an IP68 dustproof and waterproof seal.

[0027] Both the first filter disc 2 and the second filter disc 3 have filter plates 31 embedded on their tops. The top of the filter plates 31 has filter holes. The filter holes of the upper filter plate 31 are arranged in a regular hexagonal pattern with a porosity of 45%. The lower filter plate 31 adopts an array of staggered rhomboid holes with a porosity of 30%, forming a dual-stage filtration system. The total interception efficiency is 60% higher than that of a single-layer filter.

[0028] The top of the second connecting plate 42 is provided with an annular groove, which is connected to the return spring 44 and the telescopic rubber protective sleeve 46. The bottom of the annular groove is provided with four evenly distributed guide holes. When water accumulates inside the telescopic rubber protective sleeve 46, the water flows out radially along the second connecting plate 42 through the guide holes, thus avoiding electrochemical corrosion of the spring assembly.

[0029] The bottom of the first connecting plate 41 is evenly distributed with guide pins 43. The guide pins 43 are inserted into the top of the second connecting plate 42. The top of the second connecting plate 42 has twelve sets of vertical slots to accommodate the guide pins 43. There are at least four sets of guide pins 43. The ends of the guide pins 43 are chamfered. The entrance of the vertical slot is provided with a flared guide structure, which allows a radial installation deviation of ±1.5mm. The guide pins 43 can be completely pulled out from the inside of the vertical slot. After rotating the first connecting plate 41, the guide pins 43 are returned to their original position.

[0030] This solution first fixes the first filter screen 2 to the drainage pipe 1. Through the design of the second filter screen 3 and the first filter screen 2, the sewage generated by road construction is discharged. When the sewage volume is too large, the second filter screen 3 is lifted up to make the locking block 45 disengage from the slot. Then the second filter screen 3 is rotated to adjust the position of the filter holes between the first filter screen 2 and the second filter screen 3, and then adjust the size of the filter holes to finally adjust the drainage volume. Finally, the locking mechanism 4 is returned to its original position to complete the fixation of the first filter screen 2 and the second filter screen 3.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] 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 these 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 road construction drainage structure, comprising: The system comprises a drainage pipe (1), a first filter disc (2), and a second filter disc (3), wherein the second filter disc (3) is embedded in the top of the first filter disc (2), and the drainage pipe (1) is assembled in the inlet cavity of the drainage pipe (1). The system is characterized in that a snap-fit ​​mechanism (4) is assembled between the first filter disc (2) and the second filter disc (3), the snap-fit ​​mechanism (4) comprising a first connecting disc (41) and a second connecting disc (42), the first connecting disc (41) and the second connecting disc (42) respectively connecting to the second filter disc. (3) is connected to the first filter screen (2). The bottom of the first connecting plate (41) is evenly provided with locking blocks (45). The upper end of the second connecting plate (42) is provided with a locking groove that matches the locking blocks (45). A return spring (44) is evenly provided between the first connecting plate (41) and the second connecting plate (42). A telescopic rubber protective sleeve (46) is assembled between the first connecting plate (41) and the second connecting plate (42). The telescopic rubber protective sleeve (46) is located outside the return spring (44).

2. The road construction drainage structure according to claim 1, characterized in that: The top of the first connecting plate (41) is provided with a square groove (47), and a handle (48) is fitted at the bottom of the inner cavity of the square groove (47).

3. The road construction drainage structure according to claim 1, characterized in that: The first filter screen (2) is fitted with a frame (21) on its outside. The frame (21) is connected to the drain pipe (1) by bolts, and a sealing gasket is fitted between the bolts and the drain pipe (1).

4. A road construction drainage structure according to claim 1, characterized in that: The top of the first filter screen (2) and the second filter screen (3) are both fitted with filter plates (31), and the top of the filter plates (31) are provided with filter holes.

5. A road construction drainage structure according to claim 1, characterized in that: The top of the second connecting plate (42) is provided with an annular groove, which is connected to the return spring (44) and the telescopic rubber protective sleeve (46).

6. A road construction drainage structure according to claim 1, characterized in that: The bottom of the first connecting plate (41) is evenly provided with guide short posts (43), the guide short posts (43) are inserted into the top of the second connecting plate (42), and the top of the second connecting plate (42) is provided with twelve sets of vertical slots to accommodate the guide short posts (43), and there are at least four sets of guide short posts (43).

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