A waterproof and drainage integrated composite structure for a subway station ventilation shaft

Abstract

The utility model discloses a waterproof and drainage integrated composite structure for subway station ventilation shaft relates to ventilation shaft waterproof and drainage technical field, and its technical scheme is: including ventilation shaft, the ventilation shaft top is equipped with ventilation grille fixedly, the ventilation shaft inside is equipped with water drip along the edge, well wall water collecting tank fixedly, the well wall water collecting tank bottom is equipped with drainage component, and the drainage component includes drainage unit and impurity removal unit. The utility model discloses through water drip along the edge first block rainwater along the wall slide path, and the water flow is guided to the well wall water collecting tank below, avoids rainwater direct scouring well wall concrete and waterproof layer, simultaneously, the well wall water collecting tank is directly docked with the upper section of drain pipe, and the collected rainwater can enter the drainage unit quickly, need not be detained in the tank, and the long -term soaking and chemical corrosion of rainwater to well wall are reduced from the source, and the concrete carbonization, reinforcing steel corrosion process is effectively delayed, and the service life of shaft structure is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of ventilation shaft waterproofing and drainage technology, specifically to an integrated waterproofing and drainage composite structure for ventilation shafts in subway stations. Background Technology

[0002] In subway construction, ventilation shafts are a key component of the subway station ventilation system, playing an important role in introducing fresh air and expelling polluted air. Their structural safety and functional stability are directly related to the reliability of subway operation. Currently, subway ventilation shafts generally adopt a top grid structure to meet ventilation requirements.

[0003] While existing ventilation shafts may have ring-shaped or strip-shaped rainwater collection troughs at the bottom to collect rainwater falling vertically from the center of the grille and then draining it to the municipal pipe network through the drainage pipes at the bottom of the trough, thus reducing water accumulation at the bottom, this design only targets rainwater in the central area of ​​the grille and fails to cover the shaft wall area. During rainfall, a large amount of rainwater still seeps into the shaft wall along the edges of the grille and flows downwards along the surface of the shaft wall. This rainwater flowing along the wall will not only accelerate surface carbonization and aggregate spalling, but also damage the waterproof layer of the shaft wall, causing water to seep into the interior of the structure, leading to steel corrosion and exacerbating shaft wall erosion. Utility Model Content

[0004] Therefore, this utility model provides an integrated waterproof and drainage composite structure for ventilation shafts in subway stations. Through the drainage component, it solves the problem that rainwater seeps into the shaft wall along the edge of the grille and flows downward along the surface of the shaft wall.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated waterproof and drainage composite structure for ventilation shafts in subway stations, comprising a ventilation shaft, a ventilation grille fixedly installed at the top of the ventilation shaft, a drip edge and a water collection trough fixedly installed inside the ventilation shaft, a drainage component installed at the bottom of the water collection trough, the drainage component comprising a drainage unit and a debris removal unit, the drainage unit comprising an upper section of a drainage pipe, an upper section water-binding ring fixedly installed inside the upper section of the drainage pipe, a middle section of the drainage pipe at the bottom of the upper section of the drainage pipe, a middle section water-binding ring fixedly installed inside the middle section of the drainage pipe, a lower section of the drainage pipe at the bottom of the middle section of the drainage pipe, a filter screen fixedly installed at the top of the lower section of the drainage pipe, and an electric push rod with a push rod at one end and a connecting slider fixedly connected to one end of the push rod. The connecting slider has a limiting groove on its outside and is fixedly sleeved on the outside of the middle section of the drainage pipe.

[0006] Preferably, the well wall water collection trough is located at the bottom of the drip edge, and the bottom of the well wall water collection trough is fixedly connected to the top of the upper section of the drain pipe.

[0007] Preferably, the top of the middle section of the drain pipe is slidably connected to the bottom of the upper section of the drain pipe, and the bottom of the middle section of the drain pipe is slidably connected to the top of the lower section of the drain pipe.

[0008] Preferably, the lower section of the drain pipe is externally fixed with two fixing blocks, both of which are fixedly connected to the ventilation shaft.

[0009] Preferably, the top of the filter screen is flush with the top of the lower section of the drain pipe.

[0010] Preferably, the electric push rod is fixedly connected to one side wall of the ventilation shaft, and the output end of the electric push rod is fixedly connected to one end of the push rod.

[0011] Preferably, the connecting slider is disposed inside the limiting slide groove and is slidably connected to the limiting slide groove.

[0012] Preferably, one side of the limiting groove is fixedly embedded inside the ventilation shaft.

[0013] The present invention has the following advantages: By dripping water along the edge to block the path of rainwater sliding down the wall, the water flow is directed to the water collection trough below the well wall, preventing rainwater from directly washing the well wall concrete and waterproof layer. At the same time, the well wall water collection trough is directly connected to the upper section of the drainage pipe, so the collected rainwater can quickly enter the drainage unit without lingering in the trough. This reduces the long-term soaking and chemical erosion of the well wall by rainwater from the source, effectively delaying the process of concrete carbonization and steel corrosion, and extending the service life of the vertical shaft structure. The system first filters out large impurities from rainwater through a filter screen to prevent clogging of the lower section of the drain pipe. When impurities accumulate, an electric push rod drives the middle section of the drain pipe to move laterally along a limiting groove via a connecting slider. The bottom edge of the middle section can fit against the surface of the filter screen to push out the impurities. Because the middle section is misaligned with the fixed lower section, the impurities can automatically fall into the collection area without the need for manual entry into the shaft. After cleaning, the middle section can be precisely reset and realigned with the upper and lower sections to restore drainage. The entire process does not require interruption of rainwater discharge, which ensures drainage efficiency and reduces maintenance costs and safety risks. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0016] Figure 1 The main view partial sectional stereoscopic view provided by this utility model Figure 1 ; Figure 2 The main view partial sectional stereoscopic view provided by this utility model Figure 2 ; Figure 3 Provided by this utility model Figure 2 Enlarged 3D view at point A in the middle; Figure 4 Partial sectional perspective view of the drainage component provided by this utility model; Figure 5 Partial cross-sectional perspective view of the drainage component provided by this utility model in the state of impurity removal; Figure 6 Exploded perspective view of the drainage component provided by this utility model; Figure 7 A front perspective view of this utility model.

[0017] In the diagram: 1. Ventilation shaft, 2. Ventilation grille, 3. Drip edge, 4. Well wall water collection trough, 5. Upper section of drain pipe, 6. Upper section water-binding ring, 7. Middle section of drain pipe, 8. Middle section water-binding ring, 9. Lower section of drain pipe, 10. Filter screen, 11. Fixing block, 12. Electric push rod, 13. Push rod, 14. Connecting slider, 15. Limiting slide groove. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] See attached document Figure 1 - Appendix Figure 7This utility model provides an integrated waterproof and drainage composite structure for ventilation shafts in subway stations, including a ventilation shaft 1, a ventilation grille 2 fixedly installed on the top of the ventilation shaft 1, a drip edge 3 and a water collection trough 4 fixedly installed inside the ventilation shaft 1, and a drainage component at the bottom of the water collection trough 4. The drainage component includes a drainage unit and a debris removal unit. The drainage unit includes an upper section 5 of a drainage pipe, an upper section water-binding ring 6 fixedly installed inside the upper section 5, a middle section 7 of a drainage pipe at the bottom of the upper section 5, a middle section water-binding ring 8 fixedly installed inside the middle section 7, a lower section 9 of a drainage pipe at the bottom of the middle section 7, and a filter screen 10 fixedly installed on the top of the lower section 9. The debris removal unit includes an electric push rod 12, a push rod 13 at one end of the electric push rod 12, a connecting slider 14 fixedly connected to one end of the push rod 13, a limiting groove 15 on the outside of the connecting slider 14, and the connecting slider 14 fixedly sleeved on the outside of the middle section 7 of the drainage pipe. In this implementation scheme, to prevent rainwater from flowing along the well wall, the fixed drip edge 3 inside the ventilation shaft 1 can intercept the rainwater flowing along the well wall and guide it to the well wall collection trough 4 below, preventing rainwater from directly washing the well wall concrete and waterproof layer, reducing structural damage from the source. The rainwater collected in the well wall collection trough 4 enters the upper section 5 of the drainage pipe, where the upper section water-binding ring 6 regulates the water flow to prevent splashing. After the rainwater flows into the middle section 7 of the drainage pipe, the middle section water-binding ring 8 further optimizes the water flow state, and finally it is stably discharged into the municipal pipe network through the lower section 9 of the drainage pipe, ensuring drainage efficiency. The filter screen 10 at the top of the lower section 9 of the drainage pipe filters large impurities. When impurities accumulate, the electric push rod 12 drives the push rod 13, which drives the connecting slider 14 to slide along the limiting slide groove 15, thereby pulling the middle section 7 of the drainage pipe to move laterally. Its bottom edge pushes the impurities off the filter screen. Because the middle section and the lower section are misaligned, the impurities fall off automatically, preventing blockage without manual operation. In order to ensure that rainwater along the well wall can only flow into the well wall collection trough 4, the device adopts the following technical solution: the well wall collection trough 4 is located at the bottom of the drip edge 3, and the bottom of the well wall collection trough 4 is fixedly connected to the top of the upper section 5 of the drainage pipe. The drip edge 3 can intercept the rainwater flowing along the well wall and guide it to the well wall collection trough 4 below, preventing rainwater from directly washing the well wall concrete and waterproof layer, and reducing structural damage from the source. To achieve automatic impurity removal without affecting the normal drainage process, the device employs the following technical solution: the top of the middle section 7 of the drainage pipe is slidably connected to the bottom of the upper section 5 of the drainage pipe; the bottom of the middle section 7 of the drainage pipe is slidably connected to the top of the lower section 9 of the drainage pipe; two fixing blocks 11 are fixedly fitted on the outside of the lower section 9 of the drainage pipe, and both fixing blocks 11 are fixedly connected to the ventilation shaft 1; the top of the filter screen 10 is flush with the top of the lower section 9 of the drainage pipe; the electric push rod 12 is fixedly connected to one side wall of the ventilation shaft 1; the output end of the electric push rod 12 is fixedly connected to one end of the push rod 13; and the connecting slider 14 is located inside the limiting groove 15. It is slidably connected to the limiting slide groove 15. One side of the limiting slide groove 15 is fixedly embedded in the ventilation shaft 1. The fixing block 11 firmly fixes the lower section 9 of the drain pipe to the well wall, providing a stable base for the drainage unit. During normal drainage, the middle section is aligned with the upper and lower sections, and the rainwater flows smoothly. When cleaning is required, the electric push rod 12 drives the connecting slider 14 to slide along the limiting slide groove 15 through the push rod 13. The connecting slider 14 drives the middle section 7 of the drain pipe to move smoothly laterally. Its bottom edge can fit against the surface of the filter screen 10 to push out impurities. The sliding connection design ensures that the overall structure of the drainage unit is not damaged during the lateral movement. After cleaning, the middle section can be accurately reset to restore the drainage function.

[0020] The usage process of this utility model is as follows: When using this utility model, the electric push rod 12 is connected to an external power source and controlled to start and stop via a timer start device to achieve the function of periodically and automatically cleaning impurities. When rainy weather arrives, rainwater falls on the ventilation grille 2 at the top of the ventilation shaft 1. Some of the rainwater falls vertically along the gaps in the grille, while the other part seeps into the shaft wall along the edge of the grille and flows downwards along the shaft wall. At this time, the drip edge 3 fixed inside the ventilation shaft 1 plays a guiding role, intercepting the rainwater flowing along the wall and directing it to the water collection trough 4 below the shaft wall, preventing rainwater from directly eroding the concrete structure of the shaft wall and reducing the risk of shaft wall erosion from the source; the water enters the water collection trough 4. Rainwater in trough 4 collects at the bottom of the trough under gravity and enters the drainage unit through the upper section 5 of the drainage pipe, which is fixedly connected to the bottom of the trough. The upper water-binding ring 6 inside the upper section 5 regulates the water flow, preventing rainwater from splashing inside the pipe and ensuring a stable downward flow into the middle section 7 of the drainage pipe. Similarly, the middle water-binding ring 8 inside the middle section 7 further optimizes the water flow, guiding the rainwater to flow smoothly towards the lower section 9 of the drainage pipe. Before the rainwater enters the lower section 9, the filter screen 10 fixed at its top filters the rainwater, intercepting large impurities such as leaves and plastic fragments to prevent them from entering the pipe and causing blockage. The filtered rainwater is then discharged through the lower section 9 into the drainage unit. The municipal pipe network completes the rainwater drainage process. After the device has been running for a period of time, a certain amount of impurities will accumulate on the filter screen. At this time, the timed start device triggers the electric push rod 12 to work. The output end of the electric push rod 12 pushes the push rod 13, causing the connecting slider 14, which is fixedly connected to the push rod 13, to slide within the limiting groove 15. Since the connecting slider 14 is fixedly sleeved on the outside of the middle section 7 of the drainage pipe, and the upper and lower ends of the middle section 7 of the drainage pipe are slidably connected to the upper section 5 and the lower section 9 of the drainage pipe, the middle section 7 of the drainage pipe will move horizontally synchronously with the connecting slider 14. During the horizontal movement, the bottom edge of the middle section 7 of the drainage pipe will exert a pushing force on the impurities on the surface of the filter screen 10, pushing the impurities from the filter screen 10. The filter screen is pushed out; at the same time, due to the misalignment between the middle section 7 of the drain pipe and the fixed lower section 9 of the drain pipe, the pushed-out impurities lose their support and automatically fall into the preset impurity collection area at the bottom of the ventilation shaft 1, to be cleaned regularly later; after the impurities are cleaned, the electric push rod 12 drives the push rod 13 to retract, and the connecting slider 14 slides in the opposite direction along the limiting slide groove 15, pulling the middle section 7 of the drain pipe back to its original position, so that it is aligned again with the upper section 5 and the lower section 9 of the drain pipe, restoring normal drainage function. The whole process does not require manual entry into the shaft, which not only ensures maintenance safety, but also avoids interruption of ventilation due to cleaning operations, realizing automated and integrated operation of drainage and impurity cleaning.

[0021] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A waterproof and drainage integrated composite structure for ventilation shafts in subway stations, comprising a ventilation shaft (1), characterized in that: The ventilation shaft (1) is fixedly provided with a ventilation grille (2) at the top. The ventilation shaft (1) is fixedly provided with a drip edge (3) and a well wall water collection trough (4). The well wall water collection trough (4) is provided with a drainage assembly at the bottom. The drainage assembly includes a drainage unit and a debris removal unit. The drainage unit includes an upper section of a drainage pipe (5). An upper section water-binding ring (6) is fixedly provided inside the upper section of the drainage pipe (5). A middle section of the drainage pipe (7) is provided at the bottom of the upper section of the drainage pipe (5). The middle section of the drainage pipe (7) is located inside... A water-binding ring (8) is fixedly provided in the middle section. A lower section (9) of the drain pipe is provided at the bottom of the middle section (7). A filter screen (10) is fixedly provided at the top of the lower section (9). The impurity removal unit includes an electric push rod (12). A push rod (13) is provided at one end of the electric push rod (12). A connecting slider (14) is fixedly connected at one end of the push rod (13). A limiting groove (15) is provided on the outside of the connecting slider (14). The connecting slider (14) is fixedly sleeved on the outside of the middle section (7) of the drain pipe.

2. The integrated waterproofing and drainage composite structure for ventilation shafts in subway stations according to claim 1, characterized in that: The well wall water collection trough (4) is located at the bottom of the drip edge (3), and the bottom of the well wall water collection trough (4) is fixedly connected to the top of the upper section (5) of the drain pipe.

3. The integrated waterproofing and drainage composite structure for ventilation shafts in subway stations according to claim 1, characterized in that: The top of the middle section (7) of the drain pipe is slidably connected to the bottom of the upper section (5) of the drain pipe, and the bottom of the middle section (7) of the drain pipe is slidably connected to the top of the lower section (9) of the drain pipe.

4. The integrated waterproofing and drainage composite structure for ventilation shafts in subway stations according to claim 1, characterized in that: The lower section (9) of the drainage pipe is fitted with two fixing blocks (11) on the outside, and both fixing blocks (11) are fixedly connected to the ventilation shaft (1).

5. The integrated waterproofing and drainage composite structure for ventilation shafts in subway stations according to claim 1, characterized in that: The top of the filter screen (10) is flush with the top of the lower section (9) of the drain pipe.

6. The integrated waterproofing and drainage composite structure for ventilation shafts in subway stations according to claim 1, characterized in that: The electric push rod (12) is fixedly connected to one side wall of the ventilation shaft (1), and the output end of the electric push rod (12) is fixedly connected to one end of the push rod (13).

7. The integrated waterproofing and drainage composite structure for ventilation shafts in subway stations according to claim 1, characterized in that: The connecting slider (14) is located inside the limiting slide groove (15) and is slidably connected to the limiting slide groove (15).

8. The integrated waterproofing and drainage composite structure for ventilation shafts in subway stations according to claim 1, characterized in that: The limiting slide (15) is fixedly embedded in the ventilation shaft (1) on one side.

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