Anti-twist low wind resistance ventilation fire damper

Abstract

The utility model relates to fireproof valve technical field especially a kind of anti-twist low wind resistance ventilation fireproof valve, including the frame of rectangle, its both ends are equipped with the connecting frame of outside turning, connecting frame corner is equipped with the clamping angle code with fastening hole, to enhance the connecting strength. Frame is equipped with the valve piece group consisting of at least one valve blade in, blade is rotatably arranged in the air passage of frame by blade assembly column and blade bearing. Execution controller drives valve piece group rotation to control on-off. The utility model is sealed by setting wind baffle strip, spring piece and the fitting part of both sides of valve blade on frame, effectively improve the air tightness when closing. It has the advantages of stable structure, good sealing and reliable control, suitable for various gas pipeline systems.

Description

Technical Field

[0001] This utility model relates to the field of fireproof valve technology, and in particular to a torsion-resistant, low-wind-resistance ventilation fireproof valve. Background Technology

[0002] In ventilation, air conditioning, and air purification systems, valves are key components for controlling gas flow and shut-off. Currently common ventilation valves, such as louvered valves and butterfly valves, still have room for improvement in terms of sealing performance, structural strength, and the accuracy of multi-blade synchronous control. For example, some valves, when closed, have gaps between the blades and the frame, or between the blades themselves, leading to inadequate sealing and leakage. Furthermore, if the structural strength and sealing of the valve connection to the pipeline are insufficient, it is prone to deformation or leakage under long-term use or wind pressure. Therefore, there is an urgent need for a robust, well-sealed, and reliable fire-resistant flow valve. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a torsion-resistant, low-wind-resistance ventilation and fireproof valve, the specific technical solution of which is as follows: A torsion-resistant, low-resistance ventilation and fireproof valve, comprising: The frame is rectangular, with a through-hole forming an air passage for connecting the air inlet and the air outlet. The connecting frame consists of two frames, which are integrally formed or fixedly connected to the openings at both ends of the frame and extend outwards. Multiple clamping corner brackets are installed at the corners of the connecting frame to enhance the structural strength of the connecting frame when connected to external pipes; A valve plate assembly includes at least one valve blade, wherein the upper and lower ends of the valve blade are respectively provided with blade assembly columns; the rotation axis of the valve blade is located on its radial symmetry plane; The bearing assembly includes a plurality of blade bearings sleeved on the blade assembly column, the blade bearings being mounted on the frame so that the valve blade is rotatably disposed within the air passage; An actuator controller is fixedly installed on the frame, and its output end is driven to the valve plate assembly to drive the valve blades to rotate, thereby opening or closing the air passage.

[0004] As a further improvement of this utility model, the valve plate assembly includes a valve blade, and the output end of the actuator is directly connected to the blade assembly column of the valve blade.

[0005] As a further improvement of this utility model, the valve plate group includes multiple valve blades arranged in parallel, and the output end of the actuator is connected to one of the valve blades in a transmission connection; each valve blade is fixedly provided with a linkage arm, and all the linkage arms are hinged to each other through at least one linkage rod, so that the actuator can drive all valve blades to rotate synchronously.

[0006] As a further improvement of this utility model, the valve blades are provided with mating parts on both sides, and the mating parts on two adjacent valve blades fit together, thereby improving the sealing performance of all valve blades after they are connected together in the closed state.

[0007] As a further improvement of this utility model, a windbreak strip is provided on the inner side wall of the frame.

[0008] As a further improvement of this utility model, a spring sheet is provided on the bottom wall inside the frame, and the initial height of the spring sheet is less than 5mm.

[0009] As a further improvement of this utility model, the execution controller is an electric actuator, a pneumatic actuator, or a manual actuator.

[0010] As a further improvement of this utility model, the clamping angle bracket is L-shaped, and fastening holes are provided on both right-angled sides.

[0011] Compared with the prior art, the present invention has the following beneficial effects: Firstly, this solution employs a multi-layered sealing design. Firstly, the valve blades rotate on a radially symmetrical plane, achieving large-area surface contact when closed. Secondly, by setting mutually fitting mating parts, adjacent blades are tightly interlocked. Thirdly, the windproof strips on the frame and the spring plates at the bottom work together to fill the gaps between the blade ends and side walls, and between the blade bottoms and the bottom wall of the frame, forming a three-dimensional sealing system that significantly reduces the leakage rate.

[0012] Secondly, this solution employs a parallel four-bar linkage mechanism consisting of a connecting arm and a linkage rod for synchronous transmission, ensuring a high degree of consistency and synchronicity in the movement of all valve blades, thus avoiding jamming or poor sealing caused by asynchronous movements. The diverse selection of actuators also allows it to adapt to different automation control requirements.

[0013] Thirdly, this solution greatly enhances the structural strength and stability of the connection between the valve and the external pipeline by setting an outward-facing connecting frame and L-shaped clamping brackets at the corners of the connecting frame. It can effectively withstand pipeline wind pressure and installation stress and prevent deformation.

[0014] Fourthly, in this design, blade bearings are installed at both the upper and lower ends of the valve blade to improve the rotational stability of the valve blade. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a partial enlarged cross-sectional view of the valve blade and the galvanized sheet mounting area of ​​this application.

[0016] Reference numerals: 1. Frame; 11. Air passage; 12. Wind deflector; 13. Spring plate; 14. Galvanized sheet; 2. Connecting frame; 3. Clamping bracket; 31. Fastening hole; 4. Valve blade; 41. Blade assembly column; 42. Fitting part; 5. Blade bearing; 6. Actuator; 7. Linkage arm; 8. Linkage rod. Detailed Implementation

[0017] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0018] like Figures 1-2 As shown, a torsion-resistant, low-resistance ventilation and fireproof valve mainly includes a rectangular frame 1. A gas duct 11 is formed through the middle of the frame 1. At each of the two openings of the frame 1, an outwardly folded connecting frame 2 is provided for connection to an external pipeline. At each of the four corners of each connecting frame 2, an L-shaped clamping bracket 3 is installed. The clamping bracket 3 has fastening holes 31, allowing the connecting frame 2 to be securely clamped to the flange of the external pipeline using bolts or other fasteners.

[0019] A valve plate assembly is provided inside the frame 1. In this embodiment, the valve plate assembly consists of multiple parallel valve blades 4. Each valve blade 4 has a blade assembly post 41 at its upper and lower center positions. A blade bearing 5 is sleeved on the blade assembly post 41 and installed in a corresponding bearing seat on the frame 1, allowing each valve blade 4 to rotate independently and smoothly around its own axis. The rotation axis of the valve blade 4 is designed on its radial symmetry plane to ensure good sealing mechanical properties.

[0020] To achieve synchronous rotation of multiple valve blades 4, a connecting arm 7 is fixedly installed on each valve blade 4. All connecting arms 7 are hinged together by a through linkage 8, forming a parallel four-bar linkage. An actuator controller 6 (an electric actuator is used as an example in this embodiment) is fixed to the outside of the frame 1, and its output shaft is directly connected to the blade mounting post 41 of one of the valve blades 4. When the actuator controller 6 is activated, it drives the valve blade 4 to rotate, and the power is transmitted to all other valve blades 4 through the connecting arm 7 and the linkage 8, achieving their synchronous rotation, thereby opening or closing the air passage 11 together.

[0021] To improve the sealing effect, a mating portion 42 (e.g., a stepped or convex-concave fit structure) is provided on both sides of the edge of each valve blade 4. When the valve is closed, the mating portions 42 of adjacent valve blades 4 engage tightly with each other. Figure 1 As shown, this effectively blocks the path of airflow leakage from the blade gap. Furthermore, a rubber baffle strip 12 is affixed to the inner wall of the frame 1. When the blades are closed, the blade tips press against the baffle strip 12, filling the lateral gaps. A metal spring plate 13 with a height of less than 5mm is also installed on the bottom wall inside the frame 1. When the valve blade 4 is closed, its bottom edge compresses the spring plate 13, utilizing its elastic restoring force to achieve a dynamic seal of the bottom gap.

[0022] In some embodiments, the spring sheet 13 is arranged in an arc shape, with its upper end forming an elastic part that abuts against the side wall of the valve blade 4, thereby achieving a sealing of the gap between the valve blade 4 and the frame 1. A galvanized plate 14 is placed at the lower end of the spring sheet 13, with both ends of the galvanized plate 14 connected to the two ends of the spring sheet 13 respectively. Thus, the spring sheet 13 is a structure with elastic potential energy. The galvanized plate makes the middle part of the spring sheet 13 rise, reducing wind resistance and improving ventilation efficiency.

[0023] Example 2: Single-blade valve The main difference between this embodiment and Embodiment 1 lies in the valve assembly. In this embodiment, the valve assembly consists of only one large valve blade 4. The output of the actuator 6 is directly connected to the blade assembly column 41 of the valve blade 4, directly driving it to rotate from 0 to 90 degrees to control the opening and closing of the air passage. This structure is simple and suitable for pipelines with smaller diameters.

[0024] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A torsion-resistant, low-wind-resistance ventilation and fireproof valve, characterized in that, include: The frame (1) is rectangular, and a passage (11) for connecting the air inlet and the air outlet is formed through the middle. Connecting frame (2), there are two connecting frames (2), which are integrally formed or fixedly connected to the openings at both ends of the frame (1) and folded outward; Multiple clamping corner brackets (3) are provided at the corners of the connecting frame (2) to enhance the structural strength of the connecting frame (2) when it is connected to the external pipe; The valve plate assembly includes at least one valve blade (4), and the upper and lower ends of the valve blade (4) are respectively provided with blade assembly columns (41); the rotation axis of the valve blade (4) is located on its radial symmetry plane; The bearing assembly includes a plurality of blade bearings (5) sleeved on the blade assembly column (41), the blade bearings (5) being mounted on the frame (1) so that the valve blade (4) is rotatably disposed in the air passage (11); An execution controller (6) is fixedly installed on the frame (1), and its output end is driven to the valve plate group to drive the valve blade (4) to rotate, so as to open or close the air passage (11).

2. The anti-torsion, low-wind-resistance ventilation and fireproof valve according to claim 1, characterized in that, The valve plate assembly includes a valve blade (4), and the output end of the actuator (6) is directly connected to the blade assembly column (41) of the valve blade (4).

3. The anti-torsion, low-wind-resistance ventilation and fireproof valve according to claim 1, characterized in that, The valve plate group includes multiple valve blades (4) arranged in parallel. The output end of the actuator (6) is connected to one of the valve blades (4) in a transmission manner. Each valve blade (4) is fixedly provided with a linkage arm (7). All the linkage arms (7) are hinged to each other through at least one linkage rod (8), so that the actuator (6) can drive all the valve blades (4) to rotate synchronously.

4. The anti-torsion, low-wind-resistance ventilation and fireproof valve according to claim 3, characterized in that, The valve blades (4) are provided with mating parts (42) on both sides. The mating parts (42) on two adjacent valve blades (4) fit together, thereby improving the sealing performance of all valve blades (4) after they are connected to each other in the closed state.

5. The anti-torsion, low-wind-resistance ventilation and fireproof valve according to claim 1, characterized in that, A windbreak strip (12) is provided on the inner wall of the frame (1).

6. The anti-torsion, low-wind-resistance ventilation and fireproof valve according to claim 1, characterized in that, A spring sheet (13) is provided on the bottom wall inside the frame (1), and the initial height of the spring sheet (13) is less than 5mm.

7. The anti-torsion, low-wind-resistance ventilation and fireproof valve according to claim 1, characterized in that, The actuator (6) is an electric actuator, a pneumatic actuator, or a manual actuator.

8. The anti-torsion, low-wind-resistance ventilation and fireproof valve according to claim 1, characterized in that, The clamping angle bracket (3) is L-shaped, and fastening holes (31) are provided on both right-angled sides.

Images