Hidden drainage ditch system of building curtain wall

Abstract

A hidden drainage ditch system of a building curtain wall comprises a drainage ditch, a cover plate is installed on the drainage ditch, a water inlet is further formed in the upper portion of the drainage ditch, and the hidden drainage ditch system further comprises a filtering assembly arranged at the water inlet. The filtering assembly further comprises a primary filtering piece and a secondary filtering piece; the primary filter part comprises a barrier plate mounted at the water inlet, and a drainage gap for water flow to pass through is formed between the barrier plate and the water inlet; the secondary filtering piece comprises a filtering plate and a plurality of leakage holes formed in the filtering plate. According to the utility model, the blockage problem of the drainage ditch can be further relieved, and the maintenance intensity of the drainage system can be effectively reduced, so that the reliability and stability of the drainage system are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of building curtain wall technology, specifically to the optimized design of a drainage system device for building curtain walls. Background Technology

[0002] Building drainage systems are a crucial component of buildings, and their performance directly impacts user experience and indoor air quality. Drainage ditches, as a key structure within the system, primarily collect and discharge rainwater and wastewater. With the widespread application of curtain wall architecture, the coordinated design of the curtain wall and drainage system has become particularly critical. Currently, most curtain wall projects utilize concealed drainage ditches, with their outlets and flow channels located behind or between the curtain wall panels, framing, or other components. This achieves both integration with the overall curtain wall appearance and efficient drainage performance. However, rainwater and other debris can easily clog these drainage ditches, thereby reducing drainage efficiency.

[0003] To alleviate the aforementioned clogging problem, existing technical solutions often incorporate complex anti-clogging structures within their drainage ditches. For example, Chinese patent document CN221031039U discloses a drainage ditch system for building curtain wall skylights, which includes a drainage ditch around the building curtain wall skylight, a filter screen installed within the drainage ditch, and a water collection trough at the bottom of the drainage ditch. Impurities are initially filtered through the filter screen within the drainage ditch to prevent debris from clogging the drainage ditch downpipe.

[0004] While existing technologies can alleviate the clogging of curtain wall drainage ditches to some extent, long-term operation means that some impurities still enter the drainage ditch and cause blockages due to the single filtration device installed within the ditch. Furthermore, a large amount of debris accumulates in the filter screen, requiring regular cleaning. However, during cleaning, workers often need to remove the drainage ditch cover to perform further cleaning work. Since the drainage ditch cover has a certain weight, frequent removal significantly increases the maintenance workload for workers. Utility Model Content

[0005] In view of the above-mentioned problems in the prior art, this utility model proposes a concealed drainage ditch system for building curtain walls, which can not only further alleviate the problem of drainage ditch blockage, but also effectively reduce the maintenance intensity of the drainage system, thereby enhancing the reliability and stability of the drainage system.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A concealed drainage system for a building curtain wall includes a drainage ditch with a cover plate, an inlet at the top of the drainage ditch, and a filter assembly disposed at the inlet. The filter assembly further includes a primary filter and a secondary filter. The primary filter includes a baffle plate installed at the inlet, and a drainage gap exists between the baffle plate and the inlet to allow water to flow through. The secondary filter includes a filter plate and a plurality of leakage holes formed on the filter plate.

[0008] The inlet is the entrance for water to enter the drainage ditch, serving as the opening between the lower building structure and the upper curtain wall structure. The filter assembly, installed at the inlet at the top of the drainage ditch, comprises a primary filter and a secondary filter. The primary filter initially filters larger impurities from the water flow. Its baffle plate is installed at the inlet, with a drainage gap between it and the inlet to allow water flow. This baffle blocks larger impurities and guides the water flow into the secondary filter. The secondary filter includes a filter plate with seepage holes. Water flows through these holes for further filtration before entering the drainage ditch, effectively reducing the risk of blockage. Structurally, the primary filter can be made of lightweight materials such as aluminum panels, while the cover plate, to meet strength and stability requirements, is typically made of cement concrete, resulting in greater weight. In routine maintenance, this invention only requires disassembling or opening the lighter primary filter and then cleaning the secondary filter, eliminating the need to frequently move the heavy cement concrete cover plate and significantly reducing the workload of workers.

[0009] This invention, by installing a filter assembly at the inlet above the drainage ditch, ensures that impurities in the water flow undergo two filtrations before entering the drainage ditch, thereby further alleviating the problem of drainage ditch blockage. Furthermore, compared to conventional drainage systems, this invention requires only the removal or opening of the flow guide filter and cleaning of impurities from the secondary filter during routine maintenance; it eliminates the need to repeatedly remove the cover plate from the drainage ditch, significantly reducing maintenance intensity and improving maintenance efficiency.

[0010] Preferably, the baffle plate is inclined at the water inlet.

[0011] The baffle plate is angled at the inlet, which increases its contact area with the water flow and improves water flow efficiency. At the same time, the angled structure guides impurities in the water flow to slide off the slope, preventing impurities from accumulating on the surface. This effectively maintains the filtration effect of the primary filter element and improves the stability and service life of the filter assembly.

[0012] Preferably, it also includes a connector disposed on one side of the water inlet, and the primary filter element is detachably connected to the connector.

[0013] The primary filter element can be detachably connected to the connector via threaded connections, plug-in connections, or snap-fit ​​connections. When it is necessary to clean debris from the secondary filter element, the primary filter element can be removed for thorough cleaning, improving maintenance efficiency.

[0014] Preferably, the primary filter element is provided with a mounting groove, and the connector includes an inner insert plate extending into the mounting groove.

[0015] The connector and the primary filter adopt a plug-in detachable structure, replacing the traditional threaded connection method. This not only improves the efficiency of installation and disassembly, but also requires less operating space compared to the threaded connection. This can effectively reduce the gap between the primary filter and the connector, and reduce the impact of rainwater splashing on the service life of the internal components on the inlet side.

[0016] Preferably, the secondary filter element is further provided with detachable fasteners at both ends for connecting and fixing the filter plate to the structures on both sides of the inlet.

[0017] The filter plate can be securely connected to the structures on both sides of the inlet using bolts, self-locking clips, or other detachable fasteners. When deep cleaning of the drainage ditch or replacement of the filter plate is required, the filter plate can be quickly disassembled to facilitate the removal of internal deposits or replacement of damaged parts, thereby ensuring the smooth flow of the drainage system and the filtration effect, improving maintenance efficiency, and extending the system's service life.

[0018] Preferably, the fastener surface is provided with silicone weather-resistant sealant.

[0019] Silicone weather-resistant sealant possesses excellent weather resistance, temperature resistance, and anti-aging properties, maintaining stable performance over long periods under various complex environmental conditions. Applying it to the surface of removable fasteners prevents rainwater, dust, and other impurities from seeping into the fastener gaps, effectively enhancing the sealing of the connection. Simultaneously, this sealant also acts as a buffer, reducing loosening of connections caused by temperature changes or vibration, thus improving the overall structural stability and durability. Furthermore, during maintenance, the silicone sealant exhibits good elasticity and peelability, facilitating disassembly and reinstallation without affecting subsequent performance.

[0020] Preferably, both the baffle plate and the filter plate are made of aluminum alloy.

[0021] Aluminum alloys are lightweight, making them easy to install and disassemble, thus reducing the labor intensity of daily maintenance. Secondly, aluminum alloys have excellent corrosion resistance and weather resistance, effectively resisting the effects of acid rain, salt spray, air pollutants, and temperature changes. They are not prone to rust or corrosion, thereby extending the service life of the filter components. Furthermore, aluminum alloys have good UV resistance, able to withstand strong sunlight during long-term outdoor use, maintaining structural stability and preventing fading, powdering, or deformation, ensuring a clean appearance and stable function.

[0022] Preferably, the filter plate further includes a vertically extending main sieve plate, a horizontally extending secondary sieve plate connected to the main sieve plate, and a vertically extending mating surface connected to the secondary sieve plate; the leakage holes are disposed on the main sieve plate and the secondary sieve plate.

[0023] The design of the main and auxiliary screen plates effectively increases the effective filtration surface area of ​​the secondary filter elements, allowing water to have a larger contact area as it flows through, thereby significantly improving filtration efficiency, reducing the risk of clogging, and extending maintenance cycles. Simultaneously, the mating surface fits tightly against the structure on the inlet side, and no leakage holes are provided in this area, effectively preventing water from seeping into the structure and improving overall sealing and reliability.

[0024] In summary, this utility model has the following beneficial effects:

[0025] 1. Install a filter assembly at the water inlet. Through the cooperation of primary and secondary filter elements, the water flowing into the drainage ditch is filtered step by step, which significantly reduces the possibility of impurities entering the drainage ditch and effectively alleviates the problem of drainage ditch blockage.

[0026] 2. The primary filter elements are all made of lightweight materials and can be detachably installed at the water inlet outside the drainage ditch. During routine maintenance, only the primary filter elements need to be removed to clean the impurities inside the secondary filter elements. There is no need to frequently move the heavy cover plate, which greatly reduces the labor intensity of the operators and improves maintenance efficiency.

[0027] 3. The primary filter element and the connector are connected by a plug-in method, which can effectively improve the efficiency of installation and disassembly. At the same time, it can reduce the reserved gap between the primary filter element and the connector, and prevent rainwater splashing from affecting the service life of the internal components on the inlet side.

[0028] 4. The baffle plate is inclined at the water inlet, which increases its contact area with the water flow and improves water flow efficiency. At the same time, the inclined structure guides impurities in the water flow to slide down the slope, preventing impurities from accumulating on the surface, thereby effectively maintaining the filtration effect of the primary filter element and improving the stability and service life of the filter assembly.

[0029] 5. The secondary filter element is detachably connected to both sides of the inlet and is made of lightweight material. When deep cleaning of the drainage ditch or replacement of the filter plate is required, the filter plate can be quickly disassembled to facilitate the removal of internal deposits or replacement of damaged parts, thereby ensuring the smooth flow of the drainage system and the filtration effect, improving maintenance efficiency and extending the service life of the system. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the concealed drainage system for the building curtain wall in Example 1;

[0031] Figure 2 yes Figure 1 A detailed view of the filter component;

[0032] in:

[0033] 1-Drainage ditch; 11-Cover plate; 2-Filter assembly; 21-Primary filter element; 211-Baffle plate; 212-Mounting groove; 22-Secondary filter element; 221-Leakage hole; 222-Filter plate; 2221-Main screen plate; 2222-Secondary screen plate; 2223-Mating surface; 3-Water inlet; 4-Building body; 5-Curtain wall structure; 6-Connector; 61-Inner insert plate; 7-Fastener. Detailed Implementation

[0034] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the present utility model is further described below in conjunction with specific illustrations. However, this utility model is not limited to the following embodiments.

[0035] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0036] Example 1:

[0037] like Figure 1 The concealed drainage system of the building curtain wall shown comprises a drainage ditch 1, a water inlet 3 located above the drainage ditch 1, and a filter assembly 2 installed at the water inlet 3. A cover plate 11 is installed on the drainage ditch 1. The water inlet 3 is an opening between the two building structures; in this embodiment, the water inlet 3 is the opening between the lower building body 4 and the upper curtain wall structure 5. The filter assembly 2 is installed at the water inlet 3, and the water flowing from the water inlet 3 is filtered twice by the filter assembly 2 before entering the drainage ditch 1.

[0038] like Figure 2 As shown, the filter assembly 2 includes a primary filter element 21 and a secondary filter element 22. The primary filter element 21 performs preliminary filtration on the water flowing into the drainage ditch 1, effectively intercepting larger impurities. This primary filter element 21 includes a baffle plate 211 inclined at the inlet 3. This inclined arrangement significantly increases the contact area with the water flow, improving water flow efficiency. Simultaneously, the inclined structure guides impurities in the water flow to slide naturally down the slope, preventing impurities from accumulating on the surface, thus maintaining good filtration performance and improving the overall stability and service life of the filter assembly.

[0039] Furthermore, in this embodiment, the primary filter element 21 is installed on the curtain wall structure 5 above the water inlet 3 via the connector 6. For ease of daily maintenance and cleaning, the primary filter element 21 and the connector 6 are detachably connected. In some embodiments, hinged connections or other connection methods may also be used. Specifically, detachable connection methods include, but are not limited to, threaded connections, plug-in connections, and snap-fit ​​connections; in this preferred embodiment, a plug-in detachable structure is used.

[0040] More specifically, the primary filter element 21 is provided with a mounting groove 212, and the connector 6 is provided with an inner insert plate 61 extending into the mounting groove 212 at a corresponding position. This plug-in structure not only has high connection strength but also good positioning accuracy, ensuring the stability and sealing of the primary filter element 21 in the installed state. In addition, compared with the traditional threaded connection method, the plug-in structure does not require tools during installation and disassembly, making operation more convenient and requiring less operating space. This helps to reduce the gap between the primary filter element 21, the connector 6, and the upper curtain wall structure 5, reducing the risk of rainwater splashing into the interior of the curtain wall, thereby improving the waterproof performance and structural durability of the system.

[0041] Furthermore, a drainage gap exists between the baffle plate 211 and the inlet 3, through which water flows. Water flows through this gap into the secondary filter element 22 for secondary filtration. The secondary filter element 22 includes a filter plate 222, specifically a main screen plate 2221 extending vertically, a secondary screen plate 2222 extending horizontally connected to the main screen plate 2221, and a mating surface 2223 extending vertically connected to the secondary screen plate 2222. Both the main screen plate 2221 and the secondary screen plate 2222 are provided with leakage holes 221, through which water entering the secondary filter element 22 undergoes secondary filtration. In this embodiment, the mating surface 2223 is tightly fitted to the building body 4 below the inlet 3, and no leakage holes 221 are provided, effectively preventing water from seeping into the building structure and improving overall sealing and reliability.

[0042] Furthermore, to facilitate deep cleaning and maintenance of the drainage system, the secondary filter element 22 is connected to the building body 4 and the curtain wall structure 5 via detachable fasteners 7. The detachable fasteners 7 can be bolts, self-locking clips, or other connection methods with quick installation and disassembly functions, allowing for quick removal of the secondary filter element 22 when needed, thereby enabling thorough cleaning or replacement of components inside the drainage ditch 1.

[0043] Preferably, the surface of fastener 7 is provided with a silicone weather-resistant sealant layer. Silicone weather-resistant sealant possesses excellent weather resistance, temperature resistance, and anti-aging properties, maintaining stability over long periods under various complex environmental conditions, and is not prone to cracking or failure. Applying this sealant to the surface of fastener 7 effectively prevents rainwater, dust, and other impurities from seeping into the structure along the connection gaps, significantly enhancing the sealing and waterproofing performance of the connection. Simultaneously, the silicone sealant also provides a certain buffering effect, absorbing stress under temperature changes or external vibrations, reducing the risk of loosening, thereby improving the overall structural stability and durability. Furthermore, during routine maintenance, the silicone sealant exhibits good elasticity and peelability, ensuring that disassembly and reinstallation of fastener 7 will not cause operational difficulties due to the sealant hardening, ensuring efficient and convenient maintenance operations without affecting subsequent performance.

[0044] In this embodiment, both the baffle plate 211 in the primary filter element 21 and the filter plate 222 in the secondary filter element 22 are preferably made of aluminum alloy sheet. Aluminum alloy material has advantages such as light weight, high strength, and good processing performance, which facilitates on-site installation and disassembly, effectively reducing the labor intensity of daily maintenance. More importantly, aluminum alloy has excellent corrosion resistance and weather resistance, and can resist the erosion caused by acid rain, salt spray, air pollutants, and diurnal temperature variations for a long time. It is not easy to rust or corrode, thus significantly extending the overall service life of the filter assembly.

[0045] Furthermore, aluminum alloys possess excellent UV resistance, effectively resisting strong sunlight during long-term outdoor exposure, maintaining structural stability, and preventing problems such as fading, powdering, or deformation, thus ensuring a clean appearance and stable function of the drainage system. In contrast, traditional drainage ditch covers 11 are typically made of cement concrete to meet requirements for structural strength, load-bearing capacity, and long-term stability. However, these covers are heavy and inconvenient for frequent opening and maintenance.

[0046] During routine maintenance, only the lighter primary filter element 21 needs to be opened or removed to clean the secondary filter element 22 below. This eliminates the need to frequently move the heavy concrete cover 11, significantly reducing the labor intensity of workers and improving maintenance efficiency. When deep cleaning of the drainage ditch 1 or replacement of the filter plate 222 is required, the silicone weather-resistant sealant layer on the surface of its fasteners 7 can be scraped off. Then, the fasteners 7 can be loosened to remove the secondary filter element 22, allowing for the removal of sediment or replacement of damaged parts inside the drainage ditch 1. This ensures the smooth flow and filtration effect of the entire drainage system, further improving the system's reliability and service life.

Claims

1. A concealed drainage system for a building curtain wall, comprising a drainage ditch (1), the drainage ditch (1) being fitted with a cover plate (11), and an inlet (3) being provided at the upper part of the drainage ditch (1), characterized in that: It also includes a filter assembly (2) disposed at the water inlet (3); the filter assembly (2) further includes a primary filter element (21) and a secondary filter element (22); the primary filter element (21) includes a baffle plate (211) installed at the water inlet (3), and there is a drainage gap between the baffle plate (211) and the water inlet (3) for water to flow through; the secondary filter element (22) includes a filter plate (222) and a plurality of leakage holes (221) opened on the filter plate (222).

2. The concealed drainage system for building curtain walls according to claim 1, characterized in that: The baffle plate (211) is inclinedly disposed at the water inlet (3).

3. The concealed drainage system for building curtain walls according to claim 1, characterized in that: It also includes a connector (6) disposed on one side of the water inlet (3), and the primary filter (21) is detachably connected to the connector (6).

4. The concealed drainage system for building curtain walls according to claim 3, characterized in that: The primary filter element (21) is provided with a mounting groove (212), and the connector (6) includes an inner insert plate (61) extending into the mounting groove (212).

5. The concealed drainage system for building curtain walls according to claim 1, characterized in that: The secondary filter element (22) is also provided with detachable fasteners (7) at both ends for connecting and fixing the filter plate (222) to the structures on both sides of the water inlet (3).

6. The concealed drainage system for building curtain walls according to claim 5, characterized in that: The fastener (7) has a silicone weather-resistant sealant on its surface.

7. The concealed drainage system for building curtain walls according to claim 1, characterized in that: Both the baffle plate (211) and the filter plate (222) are aluminum alloy plates.

8. The concealed drainage system for building curtain walls according to claim 1, characterized in that: The filter plate (222) further includes a vertically extending main sieve plate (2221), a horizontally extending secondary sieve plate (2222) connected to the main sieve plate, and a vertically extending mating surface (2223) connected to the secondary sieve plate (2222); the leakage hole (221) is provided on the main sieve plate (2221) and the secondary sieve plate (2222).

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