An electric square ventilation butterfly valve with a dust removal and heat preservation structure

Abstract

The present invention discloses an electric square ventilation butterfly valve with a dust removal and heat preservation structure, which includes a valve body, a flange fixed outside the valve body, an electric drive assembly, a valve plate, a retaining strip fixed inside the valve body, and a sealing strip fixed on the side end face of the retaining strip. The valve plate is rotatably connected inside the valve body. An electric drive assembly for driving the valve plate is installed at the top of the valve body. Rotating plates are rotatably connected to the front and rear sides inside the valve body through rotating shafts. A driven sprocket is coaxially rotatably connected to the top of the rotating plate. A driving sprocket is fixedly connected to the outer end face of the output shaft of the electric drive assembly. A transmission chain is externally meshed and transmitted between the driving sprocket and the driven sprocket. In the present invention, firstly, the dust removal performance of the valve body is improved through the sprocket linkage type dust removal mechanism. Secondly, through the three-layer structure of the two rotating plates and the valve plate, and further through the through slots and the honeycomb plate with a honeycomb structure, the heat preservation performance of the rotating plate and the buffering performance of the rotating plate are further ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of butterfly valves, and particularly to an electric square ventilation butterfly valve with a dust removal and heat preservation structure. Background Art

[0002] Ventilation butterfly valves are applied to the dust-containing cold air or hot air gas pipelines in ventilation and environmental protection projects in industries such as chemical industry, building materials, power stations, and glass, and are used as pipeline control devices for regulating the flow rate or cutting off of gas media. Generally, this type of valve should be installed horizontally in the pipeline.

[0003] Most ventilation butterfly valves are used for ventilation of pipelines or walls, etc. During use, there will be sundry dust such as spider webs on both sides of the valve plate of the ventilation butterfly valve. If the sundry dust is not isolated or cleaned when the valve plate is opened, the sundry dust will enter the flowing indoor air. Summary of the Invention

[0004] The purpose of the present invention is to provide an electric square ventilation butterfly valve with a dust removal and heat preservation structure in order to solve the above-mentioned problems.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An electric square ventilation butterfly valve with a dust removal and heat preservation structure includes a valve body, a flange fixed outside the valve body, an electric drive assembly, a valve plate, a stop bar fixed inside the valve body, and a sealing strip fixed to the side end face of the stop bar. The valve plate is rotatably connected to the inside of the valve body, and an electric drive assembly for driving the valve plate is installed at the top of the valve body. The front and rear sides inside the valve body are rotatably connected to a rotating plate through a rotating shaft. A driven sprocket is coaxially rotatably connected to the top of the rotating plate, and a driving sprocket is fixedly connected to the outer end face of the output shaft of the electric drive assembly. A transmission chain is externally engaged and transmitted between the driving sprocket and the driven sprocket.

[0007] As a further description of the above technical solution:

[0008] A baffle for limiting the rotation of the rotating plate is fixedly connected to the inside of the valve body.

[0009] As a further description of the above technical solution:

[0010] A through groove is provided inside the rotating plate.

[0011] As a further description of the above technical solution:

[0012] A honeycomb board is arranged inside the through groove.

[0013] As a further description of the above technical solution:

[0014] The driving sprocket and the driven sprocket have the same specifications.

[0015] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0016] 1. In the present invention, through the sprocket linkage dust removal mechanism, when the electric drive component drives the valve plate to open, it will drive the active sprocket to rotate. Through the meshing transmission between the active sprocket and the transmission chain and the meshing transmission between the transmission chain and the driven sprocket, the driven sprocket is driven to rotate. Through the rotation of the driven sprocket, the rotating plate is driven to open outwards, so as to push the miscellaneous dust inside the valve body and outside the rotating plate to the outside of the valve body, thereby preventing the accumulated miscellaneous dust from flowing on both sides of the valve body and improving the dust removal performance of the valve body.

[0017] 2. In the present invention, through the three-layer structure of the two rotating plates and the valve plate, the heat preservation and heat insulation effect at the flow-through part of the valve body is ensured. Moreover, the rotating plate has a through groove inside, and a honeycomb plate is arranged inside the through groove. The heat preservation performance and the buffering performance of the rotating plate are further ensured through the through groove and the honeycomb plate with a honeycomb structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 shows the front view schematic diagram according to the present invention;

[0019] Figure 2 shows the top sectional view schematic diagram according to the present invention;

[0020] Figure 3 shows the top view schematic diagram of the valve body provided by the embodiment of the present invention.

[0021] Legend Explanation:

[0022] 1. Valve body; 2. Flange; 3. Rotating plate; 4. Electric drive component; 5. Transmission chain; 6. Valve plate; 7. Through groove; 8. Honeycomb plate; 9. Baffle; 10. Sealing strip; 11. Stop strip; 12. Active sprocket; 13. Driven sprocket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1 - 3, the present invention provides a technical solution: an electric square ventilation butterfly valve with a dust removal and heat preservation structure, including a valve body 1, a flange 2 fixed outside the valve body 1, an electric drive assembly 4, a valve plate 6, a stop bar 11 fixed inside the valve body 1, and a sealing strip 10 fixed on the side end face of the stop bar 11. The valve plate 6 is rotatably connected inside the valve body 1. An electric drive assembly 4 for driving the valve plate 6 is installed at the top of the valve body 1. Both the front and rear sides inside the valve body 1 are rotatably connected to a rotating plate 3 through a rotating shaft. A driven sprocket 13 is coaxially rotatably connected to the top of the rotating plate 3. An active sprocket 12 is fixedly connected to the outer end face of the output shaft of the electric drive assembly 4. A drive chain 5 is meshed and driven outside the active sprocket 12 and the driven sprocket 13. When the electric drive assembly 4 drives the valve plate 6 to open, it will drive the active sprocket 12 to rotate. Through the meshing drive between the active sprocket 12 and the drive chain 5 and the meshing drive between the drive chain 5 and the driven sprocket 13, the driven sprocket 13 is driven to rotate. Through the rotation of the driven sprocket 13, the rotating plate 3 is driven to open outwards, so as to push the miscellaneous dust inside the valve body 1 and outside the rotating plate 3 to the outside of the valve body 1, thereby preventing the accumulated miscellaneous dust from flowing on both sides of the valve body 1.

[0025] Specifically, as Figures 1 - 3 shown, a baffle 9 for limiting the rotation of the rotating plate 3 is fixedly connected inside the valve body 1. The rotating plate 3 has a through groove 7 inside, and a honeycomb plate 8 is arranged inside the through groove 7. The active sprocket 12 and the driven sprocket 13 have the same specifications. Through the three-layer structure of the two rotating plates 3 and the valve plate 6, the heat preservation and heat insulation effect at the flow-through part of the valve body 1 is guaranteed. Moreover, the rotating plate 3 has a through groove 7 inside, and a honeycomb plate 8 with a honeycomb structure is arranged inside the through groove 7. The heat preservation performance and the buffering performance of the rotating plate 3 are further guaranteed through the through groove 7 and the honeycomb plate 8 with a honeycomb structure. The setting of the baffle 9 can support the impact force received by the rotating plate 3, preventing the rotational force from being transmitted to the driven sprocket 13 and causing damage to the drive chain 5. The active sprocket 12 and the driven sprocket 13 have the same specifications, thereby guaranteeing the synchronous opening, closing and shutting of the valve plate 6 and the rotating plate 3.

[0026] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An electric square ventilation butterfly valve with a dust removal and heat preservation structure, comprising a valve body (1), a flange (2) fixed outside the valve body (1), an electric drive assembly (4), a valve plate (6), a retaining strip (11) fixed inside the valve body (1), and a sealing strip (10) fixed on the side end face of the retaining strip (11), characterized in that, A valve plate (6) is rotatably connected to the inner side of the valve body (1). An electric drive assembly (4) for driving the valve plate (6) is installed at the top of the valve body (1). Rotating plates (3) are rotatably connected to the front and rear sides inside the valve body (1) through rotating shafts. A driven sprocket (13) is coaxially rotatably connected to the top of the rotating plate (3). A driving sprocket (12) is fixedly connected to the outer end face of the output shaft of the electric drive assembly (4). A drive chain (5) is meshed and driven outside the driving sprocket (12) and the driven sprocket (13); When the electric drive assembly (4) drives the valve plate (6) to open, it will drive the driving sprocket (12) to rotate. Through the meshing drive between the driving sprocket (12) and the drive chain (5) and the meshing drive between the drive chain (5) and the driven sprocket (13), the driven sprocket (13) is driven to rotate. Through the rotation of the driven sprocket (13), the rotating plate (3) is driven to open outwards, so as to push the dust inside the valve body (1) and outside the rotating plate (3) to the outside of the valve body (1), thereby preventing the accumulated dust from flowing on both sides of the valve body (1); A baffle (9) for limiting the rotation of the rotating plate (3) is fixedly connected to the inner side of the valve body (1); Through the three-layer structure of the two rotating plates (3) and the valve plate (6), the heat preservation and heat insulation effect at the flow-through part of the valve body (1) is ensured; A through groove (7) is provided inside the rotating plate (3); A honeycomb plate (8) is arranged inside the through groove (7); The through groove (7) and the honeycomb plate (8) with a honeycomb structure further ensure the heat preservation performance and the buffering performance of the rotating plate (3). The setting of the baffle (9) can support the impact force received by the rotating plate (3) and prevent the rotational force from being transmitted to the driven sprocket (13) to cause damage to the drive chain (5); The driving sprocket (12) and the driven sprocket (13) have the same specifications.

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