Prefabricated stilling drainage outlet and sectional stilling pool

Abstract

The prefabricated stilling drainage outlet is provided with a water inlet section, a transition section and a drainage section, the water inlet section, the transition section and the drainage section are sequentially spliced to form a drainage cavity with a large upper part and a small lower part, and the drainage cavity is communicated with a drainage pipeline; the side, away from the drainage pipeline, of the drainage cavity is a drainage inclined wall, at least one drainage opening penetrating through the drainage cavity and the outside is formed in the drainage inclined wall, and the drainage opening is tightly attached to the bottom wall of the drainage cavity. The multi-stage rainwater energy dissipation device has the advantages that rainwater can be drained into the drainage outlet through the drainage pipeline, the overflowing section is enlarged in the drainage outlet, the rainwater impact force is reduced, the rainwater overflows through the drainage inclined wall, the impact force is reduced, then the rainwater flows into receiving water bodies such as rivers and lakes, and multi-stage rainwater energy dissipation is achieved. Meanwhile, rainwater can be smoothly drained into receiving water bodies such as river channels and lakes through the drainage outlet, and the rainwater is prevented from being accumulated in the drainage outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage, in particular to a prefabricated stilling drainage outlet and a segmented stilling pool. Background Art

[0002] As people's quality of life improves, the number of various leisure venues and landscapes used for people's leisure, entertainment and sports is gradually increasing, and the scale is gradually expanding. Therefore, the drainage demand of these venues and landscapes is also gradually increasing, especially in the thunderstorm season.

[0003] Currently, sites and landscapes collect rainwater through outfalls or gutters, funneling it into a drainage network. The water is then discharged to receiving bodies of water, such as rivers and lakes, by gravity or by pumps. However, at the outlet of the drainage network, rainwater often carries a large amount of kinetic energy due to the conversion of gravitational potential energy or the increased pressure of the pumps. Direct discharge of rainwater will inevitably lead to severe erosion of riverbeds and embankments, causing severe disturbance of the receiving water body and soil erosion, creating safety hazards and damaging the surrounding ecology.

[0004] Existing drainage energy dissipation measures primarily utilize outlets and stilling basins. Outlets reduce flow velocity and riverbed erosion by expanding the flow cross-section; stilling basins dissipate energy through hydraulic jumps. However, existing outlets and stilling basins have low energy dissipation efficiency, often requiring large land areas and high construction costs to meet energy dissipation requirements. Furthermore, due to the fluctuating nature of rainfall, especially in gravity-flow drainage, prolonged, low-volume rainfall can lead to water accumulation in stilling basins. Utility Model Content

[0005] The purpose of the utility model is to provide a prefabricated energy dissipation drainage outlet and a segmented energy dissipation pool, which can improve energy dissipation efficiency, prevent rainwater from accumulating, reduce construction difficulty and reduce construction costs.

[0006] A prefabricated stilling drainage outlet, the key of which is that it is provided with a water inlet section, a transition section and a drainage section, wherein the water inlet section, the transition section and the drainage section are sequentially spliced to form a drainage chamber that is larger at the top and smaller at the bottom, and the drainage chamber is connected to a drainage pipe;

[0007] The side of the drainage chamber away from the drainage pipe is a drainage slant wall, and the drainage slant wall is provided with at least one drainage port that passes through the drainage chamber and the outside, and the drainage port is closely attached to the bottom wall of the drainage chamber.

[0008] Rainwater flows into the drainage chamber through the drainage pipe and flows toward the drainage inclined wall. The moment the rainwater contacts the drainage inclined wall, the drainage inclined wall reduces the impact force of the rainwater, thereby achieving rainwater force dissipation.

[0009] When the amount of rain is heavy, the rainwater after energy dissipation overflows through the drainage sloping wall and flows into rivers, lakes and other receiving water bodies along the drainage sloping wall; when the amount of rain is small, the rainwater after energy dissipation is smoothly discharged into rivers, lakes and other receiving water bodies through the drainage outlet, effectively preventing rainwater from accumulating in the energy dissipation pool.

[0010] Furthermore, the drainage inclined wall is inclined outwardly to form an angle α with the bottom wall of the drainage chamber, wherein 90°≤α≤180°.

[0011] Furthermore, the side of the drainage chamber away from the drainage inclined wall is a water inlet side wall, and a water inlet is formed on the water inlet side wall. The drainage pipe passes through the water inlet and is connected to the drainage chamber.

[0012] Furthermore, at least one sedimentation bucket installation groove is opened on the bottom wall of the drainage chamber, and the sedimentation bucket installation groove is close to the drainage inclined wall;

[0013] The installation groove of the sedimentation bucket corresponds to the drainage outlet one by one, and the center line of the installation groove of the sedimentation bucket coincides with the center axis of the drainage outlet.

[0014] Furthermore, a sedimentation bucket is installed in each of the sedimentation bucket installation grooves, and a water hole is opened on the side wall of the sedimentation bucket, and the water hole is located above the bottom wall of the drainage chamber.

[0015] The sedimentation barrel can remove impurities with large accumulation and high density in the rainwater, effectively prevent the drain outlet from being blocked, and ensure smooth drainage of the drain outlet.

[0016] Regularly cleaning impurities in the sedimentation barrel can prevent the water holes from being blocked and ensure smooth drainage.

[0017] Furthermore, sand and gravel are arranged around the sedimentation barrel.

[0018] Sand and gravel can remove large and low-density impurities in rainwater, effectively preventing impurities from clogging water holes and drain outlets, and ensuring smooth drainage.

[0019] Furthermore, the diameter of the sand and gravel gradually decreases from far to near, the diameter of the sand and gravel far away from the sedimentation barrel is the largest, the diameter of the sand and gravel close to the sedimentation barrel is the smallest, and the diameter of the sand and gravel is larger than the water hole.

[0020] Furthermore, at least one transition section is spliced between the water inlet section and the drainage section.

[0021] By increasing the number of transition sections, the outlet volume of the prefabricated stilling drainage can be increased, and the stilling space can be increased, thereby meeting the drainage needs of sites and landscapes of various regions, sizes and types.

[0022] Furthermore, the joints of the water inlet section, transition section and drainage section are all filled with sealing cement.

[0023] A segmented stilling pool, the key of which is that it is formed by sequentially splicing at least two prefabricated stilling drainage outlets, and the joints between the prefabricated stilling drainage outlets are filled with sealing cement;

[0024] All the prefabricated stilling drainage outlets are spliced in sequence from left to right;

[0025] Alternatively, all the prefabricated stilling drainage outlets are spliced in sequence from right to left.

[0026] By increasing the number of drainage chambers, the stilling volume can be expanded, thereby achieving large-scale stilling drainage.

[0027] Beneficial effects: 1. Rainwater is discharged into the drainage outlet through the drainage pipe, and the flow cross-section is expanded in the drainage outlet to reduce the impact force of rainwater. It overflows through the drainage inclined wall, reduces the impact force, and flows into rivers, lakes and other receiving water bodies, realizing multi-level energy dissipation of rainwater.

[0028] 2. The drainage outlet can discharge rainwater gently into rivers, lakes and other receiving water bodies to prevent rainwater from accumulating in the drainage outlet.

[0029] 3. Increasing the number of transition sections can increase the drainage outlet volume and the energy dissipation space, thus meeting the drainage needs of sites and landscapes of various regions, sizes and types.

[0030] 4. By prefabricating the water inlet section, transition section and drainage section, the construction difficulty can be reduced and the construction cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a top view of the prefabricated stilling drainage outlet;

[0032] Figure 2 for Figure 1 Plane view at AA in the middle;

[0033] Figure 3 for Figure 2 A partial enlarged view of point a in the middle;

[0034] Figure 4 This is an overhead view of the segmented stilling pool. DETAILED DESCRIPTION

[0035] The specific implementation manner and working principle of the present invention are further described in detail below with reference to the accompanying drawings.

[0036] like Figure 1 、 2As shown, a prefabricated stilling drainage outlet is provided with an inlet section 1, two transition sections 2, and a drainage section 3. The inlet section 1, the two transition sections 2, and the drainage section 3 are sequentially spliced to form a drainage chamber 5. The joints between the inlet section 1 and the transition section 2, the transition section 2 and the transition section 2, and the transition section 2 and the drainage section 3 are all sealed with cement.

[0037] One side of the drainage chamber 5 is a water inlet side wall 11, and the side opposite to the water inlet side wall 11 is a drainage inclined wall 31;

[0038] The water inlet side wall 11 is provided with a water inlet 111 , and the drainage pipe passes through the water inlet 111 and communicates with the drainage chamber 5 ;

[0039] The drainage slant wall 31 is inclined outward to form an angle α with the bottom wall of the drainage chamber 5, wherein 90°≤α≤180°. The bottom of the drainage slant wall 31 is provided with five drainage openings 311 arranged in parallel and penetrating the drainage chamber 5 with the outside world.

[0040] The bottom wall of the drainage chamber 5 is provided with five parallel settling bucket mounting grooves 32 close to the drainage inclined wall 31. The settling bucket mounting grooves 32 correspond to the drainage outlet 311 one by one, and the center lines of the settling bucket mounting grooves 32 coincide with the central axis of the drainage outlet 311.

[0041] like Figure 3 As shown, a sedimentation bucket 4 is installed in each of the sedimentation bucket installation slots 32, and a plurality of water holes 41 are opened on the side wall of the sedimentation bucket 4. The water holes 41 are all located above the bottom wall of the middle drainage chamber 5;

[0042] Sand and gravel are arranged around the sedimentation barrel 4, and the diameter of the sand and gravel gradually decreases from far to near. The diameter of the sand and gravel far away from the sedimentation barrel 4 is the largest, and the diameter of the sand and gravel close to the sedimentation barrel 4 is the smallest. The diameter of the sand and gravel is larger than the water hole 41, and the sand and gravel stacking height is higher than the water hole 41.

[0043] like Figure 4 As shown, the segmented stilling pool is composed of three prefabricated stilling drainage outlets spliced together from left to right, and the joints between the prefabricated stilling drainage outlets are sealed with cement.

Claims

1. A prefabricated stilling drainage outlet, characterized in that: A water inlet section (1), a transition section (2) and a drainage section (3) are provided, wherein the water inlet section (1), the transition section (2) and the drainage section (3) are sequentially spliced to form a drainage chamber (5) that is larger at the top and smaller at the bottom, and the drainage chamber (5) is communicated with a drainage pipe; The side of the drainage chamber (5) away from the drainage pipe is a drainage inclined wall (31), and the drainage inclined wall (31) is provided with at least one drainage opening (311) that passes through the drainage chamber (5) and the outside world, and the drainage opening (311) is closely attached to the bottom wall of the drainage chamber (5).

2. The prefabricated stilling drainage outlet according to claim 1, characterized in that: The drainage inclined wall (31) is inclined outwards to form an angle α with the bottom wall of the drainage chamber (5), wherein 90°≤α≤180°.

3. The prefabricated stilling drainage outlet according to claim 1, characterized in that: The side of the drainage chamber (5) away from the drainage inclined wall (31) is a water inlet side wall (11), and a water inlet (111) is formed on the water inlet side wall (11). The drainage pipe passes through the water inlet (111) and is in communication with the drainage chamber (5).

4. The prefabricated stilling drainage outlet according to claim 1, characterized in that: At least one sedimentation bucket installation groove (32) is formed on the bottom wall of the drainage chamber (5), and the sedimentation bucket installation groove (32) is close to the drainage inclined wall (31); The sedimentation bucket installation groove (32) corresponds to the drainage outlet (311) one by one, and the center line of the sedimentation bucket installation groove (32) coincides with the center axis of the drainage outlet (311).

5. The prefabricated stilling drainage outlet according to claim 4, characterized in that: A sedimentation barrel (4) is installed in each of the sedimentation barrel installation slots (32). A water hole (41) is opened on the side wall of the sedimentation barrel (4). The water hole (41) is located above the bottom wall of the drainage chamber (5).

6. The prefabricated stilling drainage outlet according to claim 5, characterized in that: Sand and gravel are arranged around the sedimentation barrel (4).

7. The prefabricated stilling drainage outlet according to claim 6, characterized in that: The diameter of the sand and gravel gradually decreases from far to near, the diameter of the sand and gravel far away from the sedimentation barrel (4) is the largest, and the diameter of the sand and gravel close to the sedimentation barrel (4) is the smallest, and the diameter of the sand and gravel is larger than the water hole (41).

8. The prefabricated stilling drainage outlet according to claim 1, characterized in that: At least one transition section (2) is spliced between the water inlet section (1) and the drainage section (3).

9. The prefabricated stilling drainage outlet according to claim 8, characterized in that: The joints of the water inlet section (1), the transition section (2) and the drainage section (3) are all filled with sealing cement.

10. A segmented stilling basin with a prefabricated stilling drainage outlet according to any one of claims 1 to 8, characterized in that: It is formed by sequentially splicing at least two prefabricated stilling drainage outlets, and the splicing places of the prefabricated stilling drainage outlets are filled with sealing cement; All the prefabricated stilling drainage outlets are spliced in sequence from left to right; Alternatively, all the prefabricated stilling drainage outlets are spliced in sequence from right to left.

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