A rainproof and sandproof ventilation valve device
By designing a rainproof and sandproof ventilation valve device, which uses adjustable louvers and rainwater collection troughs to collect rainwater, and combined with replaceable filter plates, the problem of silt accumulation and blockage in traditional ventilation valves in rainy and dusty areas is solved, achieving both cleanliness and sandproof effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN INST OF TECH
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional air valves are insufficient in terms of rain and sand protection in clean areas and areas with heavy rain and dust, leading to silt accumulation and blockage at the air inlet, which are difficult to clean.
A rainproof and sandproof ventilation valve device was designed, which includes adjustable louvers, an angle adjustment device, a rain collection trough and a filter plate. The angle adjustment is used to avoid rain and collect rainwater, and the mud and water mixture is discharged through the rain collection trough. Combined with the replaceable filter plate, it prevents sand and dust from entering.
It effectively prevents rainwater and dust from entering the air duct, ensuring indoor cleanliness, preventing pipe corrosion and blockage, adapting to extreme weather, and regulating airflow and filtration effect.
Smart Images

Figure CN224515963U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of adjustable air valve technology, and in particular relates to a rainproof and sandproof ventilation valve device. Background Technology
[0002] To create a comfortable and livable indoor environment, ventilation systems are needed to exhaust indoor air or introduce fresh outdoor air, maintaining indoor air temperature, humidity, and cleanliness within a comfortable range for the human body. However, existing air dampers have the following problems: Traditional air valves mainly rely on the slanted double-image structure of louvers or a separate rain cover for rain protection, without considering the need for sand protection. When traditional air valves are used in scenarios with high cleanliness and humidity requirements, such as data centers, or in areas with heavy rain and dust, their waterproof and sand protection capabilities are weak. Sand and dust can easily enter the room and pollute the air, and rainwater can be easily blown into the air valve by strong winds, which can corrode the air duct and other structures, causing damage. Existing designs that consider the rain and sand protection performance of air valves do not take into account the silt accumulation caused by rainwater mixing with sand at the specially constructed louvers. This is not only difficult to clean, but also easily causes blockage at the air inlet. Utility Model Content
[0003] In view of this, the present invention aims to propose a rainproof and sandproof ventilation valve device to solve the problem that the existing designs that consider the rainproof and sandproof performance of the ventilation valve do not take into account the silt accumulation caused by rainwater mixing with sand at the specially constructed louvers, which is not only difficult to clean, but also easy to cause blockage at the air inlet.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A rainproof and sandproof ventilation valve device includes adjustable louvers, an angle adjustment device, and a rain collection trough. The adjustable louvers are installed at the air inlet of the ventilation valve. Louver adjustment components are installed on both sides of the ventilation valve and are connected to the adjustable louvers. A rain collection trough is installed below the ventilation valve. The angle adjustment device is installed at the center of the side of the ventilation valve.
[0005] Furthermore, the rainwater collection trough is funnel-shaped and has a water pipe connected to its bottom.
[0006] Furthermore, the end of the ventilation valve is connected to a ventilation hose, which is connected to the indoor air duct.
[0007] Furthermore, the ventilation valve has a filter plate replacement layer in the middle, and an air filter screen is installed inside the filter plate replacement layer.
[0008] Furthermore, one end of the connecting shaft of the angle adjustment device is connected to a fixed shaft on the wall, and the other end is connected to the side of the ventilation valve.
[0009] Furthermore, a dustproof and waterproof bearing is connected to the outside of the connecting shaft of the angle adjustment device.
[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model utilizes an angle adjustment device to direct the air inlet downwards to avoid rain, and at the same time sets up a rain collection trough to collect rainwater, so as to prevent rainwater from entering the air duct, causing pipe corrosion and affecting indoor humidity.
[0011] 2. This utility model effectively prevents sand and dust from entering the air duct and indoors through replaceable filter plates and rainwater collection troughs that collect and discharge mud and water mixtures, ensuring indoor cleanliness, especially in extreme windy and sandy weather.
[0012] 3. This utility model can be used stably in strong winds, heavy rains and other weather conditions. People can adjust the air volume and filtration effect according to the actual outdoor conditions. Attached Figure Description
[0013] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a side view of a rainproof and sandproof ventilation valve device according to the present invention; Figure 2 This is a front view of a rainproof and sandproof ventilation valve device according to the present invention; Figure 3 This is a top view of a rainproof and sandproof ventilation valve device according to the present invention; Figure 4 This is a schematic diagram of the structure of an air filter. Figure 5 This is a schematic diagram of the rainwater collection trough.
[0014] In the picture: 1-Adjustable louvers, 2-Louvre adjustment assembly, 3-Angle adjustment device, 4-Rain collection trough, 5-Water guide pipe, 6-Filter plate replacement layer, 7-Air filter, 8-Ventilation hose. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.
[0016] Detailed Implementation Method 1: See Figure 1-5This embodiment describes a rainproof and sandproof ventilation valve device, which includes adjustable louvers 1, an angle adjustment device 3, and a rain collection trough 4. The adjustable louvers 1 are installed at the air inlet of the ventilation valve. Louver adjustment components 2 are installed on both sides of the ventilation valve and are connected to the adjustable louvers 1. A rain collection trough 4 is installed below the ventilation valve. The angle adjustment device 3 is installed at the center of the side of the ventilation valve.
[0017] When used in rainy weather, the louver angle is adjusted by the louver adjustment component 2 according to the required air volume. The valve body is adjusted by the angle adjustment device 3 to a waterproof state with the air inlet facing downwards. The upper baffle of the rain collection trough 4 is kept open, so that the rainwater and sand entering the air valve mix and flow into the rain collection trough 4. The rain collection trough 4 is funnel-shaped and connected to the bottom of the water guide pipe 5. After the rainwater and sand mix and flow in, the rainwater and sand flow out from the water guide pipe 5 by gravity and the pressure difference inside and outside the air valve.
[0018] When the indoor cleanliness requirement is high, the angle of the louver adjustment component 1 is adjusted according to the required air volume. The valve body is adjusted by the angle adjustment device 3 to the waterproof state with the air inlet facing downward. The baffle on the rain collection trough 4 is kept open, so that rainwater and sand that may enter the air valve mix and flow into the rain collection trough 4. At the same time, with the help of gravity and the pressure difference inside and outside the air valve, rainwater and sand flow out from the water guide pipe 5. At the same time, when the ventilation valve is not working, the adjustable louver 1 can be closed, which can also play a certain role in preventing sand.
[0019] In this embodiment, one end of the connecting shaft of the angle adjustment device 3 is connected to a fixed shaft on the wall, and the other end is connected to the side of the ventilation valve. A dustproof and waterproof bearing is connected to the outside of the connecting shaft of the angle adjustment device 3. The louver adjustment assembly 2 and the angle adjustment device 3 use waterproof and dustproof bearings to prevent rainwater and sand from damaging the adjustment assembly, so that it can be used normally in extreme weather. Both the louver adjustment assembly 2 and the angle adjustment device 3 can be manually adjusted when needed to prevent wind and sand from blowing directly into the ventilation valve and damaging the built-in air filter 7. At the same time, it can prevent rainwater from being blown into the ventilation valve by the wind.
[0020] In this embodiment, the rainwater collection trough 4 is funnel-shaped, with two water pipes 5 extending from its bottom. Under the action of gravity, the mixture of water and sand is discharged along the water pipes 5. Especially in windy weather, the wind blows through the opening of the water pipes 5, causing a pressure difference between the inside and outside of the air valve to squeeze out the mud and water, thus preventing the silt from clogging the pipes.
[0021] Detailed Implementation Method 2: See Figure 1-5 In this embodiment, the end of the ventilation valve is connected to a ventilation hose 8, which is connected to the indoor air duct. The ventilation hose 8 is a fireproof, retractable hose with good extension and fatigue resistance, which can avoid the limitation of the overall adjustment angle of the ventilation valve.
[0022] Detailed implementation method 3: See Figure 1-5 In this embodiment, the ventilation valve has a filter plate replacement layer 6 in the middle, and an air filter 7 is installed in the filter plate replacement layer 6. The filter plate replacement layer 6 holds a removable air filter 7, which is used to filter impurities in outdoor air. After a period of use, it can be disassembled and cleaned, or replaced with a filter with higher filtration efficiency in situations where higher cleanliness is required.
[0023] The specific embodiments of this utility model disclosed above are merely illustrative of the present utility model. These specific embodiments do not exhaustively describe all details, nor do they limit the utility model to only the described embodiments. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.
Claims
1. A rainproof and sandproof ventilation valve device, characterized in that: It includes adjustable louvers (1), angle adjustment device (3) and rain collection groove (4). The adjustable louvers (1) are installed at the air inlet of the ventilation valve. Louver adjustment components (2) are installed on both sides of the ventilation valve. The louver adjustment components (2) are connected to the adjustable louvers (1). The rain collection groove (4) is installed below the ventilation valve. The angle adjustment device (3) is installed at the center of the side of the ventilation valve.
2. A rain and dust protection ventilation valve device according to claim 1, characterized in that: The rainwater collection trough (4) is funnel-shaped and connected to a water pipe (5) at the bottom.
3. A rain and dust protection ventilation valve device according to claim 1, characterized in that: The ventilation valve is connected to a ventilation hose (8) at its end, and the ventilation hose (8) is connected to the indoor air duct.
4. A rain and dust protection ventilation valve device according to claim 1, characterized in that: The ventilation valve has a filter plate replacement layer (6) in the middle, and an air filter (7) is installed in the filter plate replacement layer (6).
5. A rain and dust protection ventilation valve device according to claim 1, characterized in that: One end of the connecting shaft of the angle adjustment device (3) is connected to the fixed shaft on the wall, and the other end is connected to the side of the ventilation valve.
6. A rain and dust protection ventilation valve device according to claim 5, characterized in that: The angle adjustment device (3) has a dustproof and waterproof bearing connected to the outside of its connecting shaft.