Low-resistance anti-backflow wind cap

Abstract

The utility model relates to the technical field of building exhaust passages, in particular to a low-resistance anti-backflow wind cap which comprises a base, a pipe shell is fixedly installed at the upper end of the base, a rainproof cover is fixedly installed at the upper end of the pipe shell, a plurality of sets of wind shields are rotatably installed in the front side, the rear side, the left side and the right side of the pipe shell, and a ventilation opening is formed in the base. Adjusting assemblies are arranged in the pipe shell and the rainproof cover and connected with the multiple sets of wind shields. The output shaft of the motor drives the four sets of screws, the four sets of first synchronous wheels, the quadruple synchronous wheels and the four sets of synchronous belts to rotate, so that the multiple sets of nuts and the multiple sets of connecting rods on the four sets of screws are driven to slide, and the multiple sets of wind shields are driven to rotate and adjust along with sliding of the multiple sets of nuts and the multiple sets of connecting rods. The wind shields can be flexibly adjusted according to wind power, adaptability and efficiency of the wind cap are improved, angles of the wind shields are changed, wind resistance is reduced, and backward flowing is prevented.

Description

Technical Field

[0001] This utility model relates to the field of building exhaust duct technology, specifically a low-resistance anti-backflow vent cap. Background Technology

[0002] Currently, the roof vent caps of building exhaust duct systems are generally designed to have a large exhaust area and low resistance, that is, a large horizontal distance between the edge of the cover plate and the wind deflector, which is conducive to the exhaust of the exhaust duct system.

[0003] In the current market, most anti-backflow hoods are equipped with fixed wind deflectors. This design cannot flexibly adjust the wind deflector when facing winds of different intensities, thus limiting its adaptability and efficiency in various environments. To address this issue, we propose a low-resistance anti-backflow hood. Utility Model Content

[0004] The purpose of this invention is to provide a low-resistance anti-backflow wind cap to solve the problem that most anti-backflow wind caps mentioned in the background art are equipped with fixed wind deflectors, which cannot achieve flexible adjustment of the wind deflector when facing winds of different intensities.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-resistance anti-backflow wind cap, comprising a base, a tube shell fixedly installed at the upper end of the base, a rain cover fixedly installed at the upper end of the tube shell, multiple sets of wind deflectors rotatably installed on the front, back, left, and right sides of the tube shell, a ventilation opening provided in the base, and an adjustment component provided in the tube shell and the rain cover, the adjustment component being connected to the multiple sets of wind deflectors.

[0006] Preferably, the inner wall of the vent is spiral-shaped.

[0007] Preferably, the casing, rain cover, and multiple sets of wind deflectors are all made of stainless steel.

[0008] Preferably, the adjusting assembly includes four sets of screws, which are rotatably installed in the corners of the tube shell. Each of the four sets of screws is threaded with multiple sets of nuts, and each of the multiple sets of nuts is fixedly installed with two sets of connecting rods. Each of the multiple sets of wind deflectors has a sliding groove at both ends, and the two sets of connecting rods on the multiple sets of nuts are respectively inserted into the sliding grooves at both ends of the multiple sets of wind deflectors. Each of the four sets of screws has a first synchronous pulley fixedly installed at its upper end. A quadruple synchronous pulley is rotatably installed inside the rain cover. Each of the four sets of first synchronous pulleys and quadruple synchronous pulleys is fitted with a synchronous belt. A motor is fixedly installed inside the rain cover, and the output shaft of the motor is fixedly connected to the quadruple synchronous pulleys.

[0009] Preferably, the length and width areas of the base and the shell are smaller than the length and width areas of the lower side of the rain cover, and the rain cover is generally conical.

[0010] Preferably, luminous stickers are glued to all four sides of the tube shell.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model drives four sets of screws, four sets of first synchronous pulleys, four sets of double synchronous pulleys and four sets of synchronous belts to rotate through the output shaft of the motor, thereby driving multiple sets of nuts and multiple sets of connecting rods on the four sets of screws to slide. As the multiple sets of nuts and multiple sets of connecting rods slide, they drive multiple sets of wind deflectors to rotate and adjust, so that the multiple sets of wind deflectors can be flexibly adjusted according to the wind force, improving the adaptability and efficiency of the wind cap, changing the angle of the wind deflectors, thereby reducing wind resistance and preventing backflow. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a front sectional view of the structure of this utility model;

[0015] Figure 3 This is a front view schematic diagram of the structure of the adjustment component of this utility model;

[0016] Figure 4 This utility model Figure 2 A magnified view of part A in the diagram;

[0017] Figure 5 This utility model Figure 3 A magnified view of part B in the diagram.

[0018] In the diagram: 1. Base; 2. Tube shell; 3. Rain cover; 4. Wind baffle; 5. Ventilation opening; 6. Screw; 7. Nut; 8. Connecting rod; 9. Slide groove; 10. First synchronous pulley; 11. Quadruple synchronous pulley; 12. Synchronous belt; 13. Motor. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-5 This utility model provides an embodiment of a low-resistance anti-backflow wind cap, comprising a base 1, a pipe shell 2 fixedly installed on the upper end of the base 1, a rain cover 3 fixedly installed on the upper end of the pipe shell 2, and multiple sets of wind deflectors 4 rotatably installed on the four sides of the pipe shell 2. A ventilation opening 5 is provided inside the base 1. Adjustment components are provided inside the pipe shell 2 and the rain cover 3, and the adjustment components are connected to the multiple sets of wind deflectors 4. This device achieves flexible adjustment of the multiple sets of wind deflectors 4 through the adjustment components. When the wind force is low, the rotation angle of the multiple sets of wind deflectors 4 can be reduced by adjusting the components, thereby reducing the obstruction of airflow and ensuring smooth exhaust of the exhaust system. When the wind force is high, the rotation angle of the multiple sets of wind deflectors 4 can be increased by adjusting the components, effectively preventing wind and rain backflow and ensuring the comfort and safety of the building's interior environment.

[0021] Furthermore, the inner wall of the vent 5 is spiral-shaped, and this structure, based on the spiral design of the inner wall of the vent 5, can further improve exhaust efficiency.

[0022] Furthermore, the casing 2, rain cover 3, and multiple wind deflectors 4 are all made of stainless steel. This structure, with the casing 2, rain cover 3, and multiple wind deflectors 4 all made of stainless steel, has good corrosion resistance and durability, thus extending its service life.

[0023] Furthermore, the adjustment assembly includes four sets of screws 6, which are rotatably installed in the corners of the casing 2. Each of the four sets of screws 6 is threaded with multiple sets of nuts 7, and each set of nuts 7 has two sets of connecting rods 8 fixedly installed on it. Each of the multiple sets of wind deflectors 4 has a groove 9 at both ends, and the two sets of connecting rods 8 on the nuts 7 are respectively inserted into the grooves 9 at both ends of the wind deflectors 4. A first synchronous pulley 10 is fixedly installed at the upper end of each of the four sets of screws 6. A quadruple synchronous pulley 11 is rotatably installed inside the rain cover 3. Each of the four sets of first synchronous pulleys 10 and quadruple synchronous pulleys 11 is fitted with a synchronous belt 12. A motor 13 is fixedly installed inside the rain cover 3, and the output shaft of the motor 13 is connected to... The four synchronous pulleys 11 are fixedly connected. This structure is driven by the motor 13 to rotate the four synchronous pulleys 11. When the four synchronous pulleys 11 rotate, they drive the four sets of first synchronous pulleys 10 and the four sets of screws 6 to rotate synchronously through the synchronous belt 12. Since multiple sets of nuts 7 are threaded onto each of the four sets of screws 6, the rotation of the four sets of screws 6 can drive the multiple sets of nuts 7 to slide up and down along the screws 6. When the multiple sets of nuts 7 slide, they drive the multiple sets of connecting rods 8 to slide in the sliding grooves 9 at both ends of the multiple sets of wind deflectors 4, thereby realizing the rotation adjustment of the multiple sets of wind deflectors 4. This allows the multiple sets of wind deflectors 4 to be flexibly adjusted according to the wind force, improving the adaptability and efficiency of the wind cap.

[0024] Furthermore, the length and width areas of the base 1 and the shell 2 are smaller than the length and width areas of the lower side of the rain cover 3. The rain cover 3 is conical in shape. Based on the conical design of the rain cover 3, this structure can effectively prevent rainwater and other external liquids from entering the exhaust system, ensuring the dryness and safety of the building's interior environment.

[0025] Furthermore, glow-in-the-dark stickers are glued to all four sides of the casing 2. This structure, with glow-in-the-dark stickers glued to all four sides of the casing 2, can provide a warning effect at night or in low light, thus improving safety.

[0026] Working principle: When using it, such as Figure 3 , Figure 4 and Figure 5As shown, when the external wind force is small, the motor 13 is started. The output shaft of the motor 13 drives the quadruple synchronous pulley 11 to rotate. The quadruple synchronous pulley 11 drives the four sets of first synchronous pulleys 10 and the four sets of screws 6 to rotate synchronously through the synchronous belt 12. Since multiple sets of nuts 7 are threaded onto each of the four sets of screws 6, the rotation of the four sets of screws 6 can drive the multiple sets of nuts 7 to slide downwards along the screws 6. When the multiple sets of nuts 7 slide, they drive the multiple sets of connecting rods 8 to slide in the sliding grooves 9 at both ends of the multiple sets of wind deflectors 4. This causes the multiple sets of connecting rods 8 to drive the multiple sets of wind deflectors 4 to rotate, reducing the rotation angle of the multiple sets of wind deflectors 4, thereby reducing the obstruction of airflow and ensuring the smooth flow of the exhaust system. When the external wind is strong, the motor 13 is started in reverse. The output shaft of the motor 13 drives the four synchronous pulleys 11 to rotate in the opposite direction. The four synchronous pulleys 11 drive the four sets of first synchronous pulleys 10 and four sets of screws 6 to rotate synchronously in the opposite direction through the synchronous belt 12. When the four sets of screws 6 rotate, they drive multiple sets of nuts 7 to slide upward along the screws 6. When the multiple sets of nuts 7 slide, they drive multiple sets of connecting rods 8 to slide in the sliding grooves 9 at both ends of multiple sets of wind deflectors 4. When the multiple sets of connecting rods 8 slide, they drive multiple sets of wind deflectors 4 to rotate in the opposite direction, increasing the rotation angle of multiple sets of wind deflectors 4, effectively preventing wind and rain from flowing back in, and ensuring the comfort and safety of the building's internal environment. The above is the complete working principle of this utility model.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A low-resistance anti-backflow vent cap, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly installed with a tube shell (2), and the upper end of the tube shell (2) is fixedly installed with a rain cover (3). Multiple sets of wind deflectors (4) are rotatably installed on the front, back, left and right sides of the tube shell (2). A ventilation opening (5) is opened in the base (1). An adjustment component is provided in the tube shell (2) and the rain cover (3). The adjustment component is connected to the multiple sets of wind deflectors (4).

2. The low-resistance anti-backflow vent cap according to claim 1, characterized in that: The inner wall of the ventilation opening (5) is spiral-shaped.

3. The low-resistance anti-backflow vent cap according to claim 1, characterized in that: The casing (2), rain cover (3) and multiple wind deflectors (4) are all made of stainless steel.

4. A low-resistance anti-backflow vent cap according to claim 1, characterized in that: The adjustment assembly includes four sets of screws (6), which are rotatably installed in the corner of the shell (2). Each of the four sets of screws (6) is threaded with multiple sets of nuts (7), and each of the multiple sets of nuts (7) is fixedly installed with two sets of connecting rods (8). Each of the multiple sets of wind deflectors (4) has a sliding groove (9) at both ends. The two sets of connecting rods (8) on the multiple sets of nuts (7) are respectively inserted into the sliding grooves (9) at both ends of the multiple sets of wind deflectors (4). Each of the four sets of screws (6) has a first synchronous pulley (10) fixedly installed at the upper end. Each of the four sets of rain cover (3) has a quadruple synchronous pulley (11) rotatably installed inside. Each of the four sets of first synchronous pulleys (10) and quadruple synchronous pulleys (11) is fitted with a synchronous belt (12). Each of the four sets of rain cover (3) has a motor (13) fixedly installed inside. The output shaft of the motor (13) is fixedly connected to the quadruple synchronous pulleys (11).

5. A low-resistance anti-backflow vent cap according to claim 1, characterized in that: The length and width areas of the base (1) and the shell (2) are smaller than the length and width areas of the lower side of the rain cover (3), and the rain cover (3) is conical in shape.

6. A low-resistance anti-backflow vent cap according to claim 1, characterized in that: The tube shell (2) is covered with glow-in-the-dark stickers on all four sides.

Images