Fully-closed air volume control valve for ventilating duct

Abstract

The utility model discloses a fully-closed air volume control valve for a ventilating duct. Relates to the technical field of ventilation pipelines, and adopts a valve body, a first valve plate and a filter device, and a transmission case is arranged on one side of the valve body. The driving motor is started, the driving motor drives the first rotating rod to rotate, the first rotating rod drives the main gear and the first valve plate to rotate at the same time, the main gear drives the driven gear to rotate, the driven gear drives the second rotating rod to rotate at the same time, and the second rotating rod drives the second valve plate to rotate until the section of the valve body is closed. A first sealing plate arranged at the lower end of the second valve plate on the upper portion is tightly attached to a second sealing plate arranged at the upper end of the first valve plate, a second sealing plate arranged at the upper end of the second valve plate on the lower portion is tightly attached to a first sealing plate arranged at the lower end of the first valve plate, and therefore air is prevented from passing through the gap. And therefore, the sealing performance of the constant air volume control valve during use is ensured.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, specifically to a fully enclosed airflow control valve for ventilation ducts. Background Technology

[0002] A constant air volume (CAV) control valve is a support device used to control the airflow within ventilation ducts. As buildings and other infrastructure become increasingly taller, ventilation ducts cannot deliver air evenly to all rooms. This is where CAV control valves come in. With the continuous development of technology, the requirements for the manufacturing process of CAV control valves are also becoming more stringent.

[0003] In existing technologies, when a conventional constant air volume (CAV) control valve is closed, gaps still exist between the valve plates and between the valve plate and the inner wall of the valve body. This allows air to continue to pass through these gaps, compromising the valve's sealing performance during operation. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fully enclosed airflow control valve for ventilation ducts, solving the problems raised in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fully enclosed airflow control valve for ventilation ducts includes a valve body, a first valve plate, and a filter device. A transmission box is located on one side of the valve body, and a drive motor is located on one side of the transmission box. A first rotating rod is mounted on the output end of the drive motor and passes through the valve body. A main gear is located around the first rotating rod and inside the transmission box. A first valve plate is located around the first rotating rod and inside the valve body. The main gear meshes with two driven gears. A second rotating rod is located on the other side of the driven gears and passes through the valve body. A second valve plate is located around the second rotating rod and inside the valve body. The first valve body is bi-directionally blade-shaped. A first sealing plate is located at the bottom of the first valve body, and a second sealing plate is located at the top of the second valve plate. The filter device is fixedly mounted on the front of the valve body using fixing bolts.

[0007] Preferably, a through hole is provided at the corner of the valve body.

[0008] Preferably, a first sealing strip is provided at the bottom of the valve body, and a second sealing strip is provided at the top of the valve body.

[0009] Preferably, the sidewall of the valve body is provided with a plurality of first baffles and second baffles at equal intervals.

[0010] Preferably, a sealing gasket is provided on one side of the upper end and the other side of the lower end of the first valve plate.

[0011] Preferably, the first valve plate and the second valve plate have the same structure.

[0012] Preferably, the filtration device includes a filter box, which is perforated and movably connected to a frame. A filter screen is disposed inside the frame. A handle is provided at the top of the frame, and sliders are provided on both sides of the frame. A groove is provided on the inner wall of the filter box, and the sliders and the grooves are slidably connected.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0014] The fully enclosed airflow control valve for ventilation ducts provided by this utility model works by starting a drive motor, which drives a first rotating rod to rotate. The first rotating rod simultaneously drives a main gear and a first valve plate to rotate. The main gear drives a driven gear to rotate, which in turn drives a second rotating rod to rotate. The second rotating rod then drives a second valve plate to rotate. At this point, the first and second valve plates abut against a first and a second baffle, preventing them from moving and thus sealing the cross-section of the valve body. Through the coordinated use of the first and second baffles, the gaps formed between the first and second valve plates and the inner wall of the valve body are sealed, allowing the upper... The first sealing plate at the lower end of the second valve plate and the second sealing plate at the upper end of the first valve plate are tightly fitted together, and the second sealing plate at the upper end of the lower second valve plate and the first sealing plate at the lower end of the first valve plate are tightly fitted together, thereby sealing the gap formed between the first valve plate and the second valve plate. At the same time, by providing a first sealing strip at the upper end of the valve body and a second sealing strip at the lower end of the valve body, the upper end of the upper second valve plate and the first sealing strip are tightly fitted together, and the lower end of the lower second valve plate and the second sealing strip are tightly fitted together, thereby preventing air from passing through the gap and ensuring the sealing performance of the constant air volume control valve during use.

[0015] This utility model further improves the sealing performance of the constant air volume control valve during use by providing sealing gaskets on both sides of the first and second sealing strips.

[0016] This invention features a filter device fixedly installed on the front of the valve body using fixing bolts. The filter screen filters the air entering the valve body, ensuring the cleanliness of the ventilation and allowing the first and second valve plates to be used for a long time. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2This is a schematic diagram of the rear view structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the valve body of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the first valve plate of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the filtration device of this utility model.

[0022] In the diagram: 1. Valve body; 2. Through hole; 3. Transmission box; 4. Drive motor; 5. First rotating rod; 6. Main gear; 7. First valve plate; 7.1. First sealing plate; 7.2. Second sealing plate; 7.3. Sealing gasket; 8. Driven gear; 9. Second rotating rod; 10. First sealing strip; 11. Second sealing strip; 12. First baffle; 13. Second baffle; 14. Filter device; 14.1. Filter box; 14.2. Frame; 14.3. Filter screen; 14.4. Handle; 14.5. Slider; 14.6. Slide groove; 15. Second valve plate. Detailed Implementation

[0023] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] According to an embodiment of the present invention, a fully enclosed airflow control valve for ventilation ducts is provided.

[0025] Example 1:

[0026] As shown in the attached diagram of the instruction manual. Figure 1As shown, a fully enclosed airflow control valve for ventilation ducts includes a valve body 1, a first valve plate 7, and a filter device 14. A transmission box 3 is provided on one side of the valve body 1, and a drive motor 4 is provided on one side of the transmission box 3. A first rotating rod 5 is installed at the output end of the drive motor 4. The first rotating rod 5 passes through and is disposed inside the valve body 1. A main gear 6 is provided on the periphery of the first rotating rod 5 and inside the transmission box 3. A first valve plate 7 is provided on the periphery of the first rotating rod 5 and inside the valve body 1. The main gear 6 meshes with two driven gears 8. A second rotating rod 9 is provided on the other side of the driven gears 8. The second rotating rod 9 passes through and is disposed inside the valve body 1. A second valve plate 15 is provided on the periphery of the second rotating rod 9 and inside the valve body 1. The first valve body 7 is bi-directionally blade-shaped. A first sealing plate 10 is provided at the bottom end of the first valve body 7. A second sealing plate 11 is provided at the top end of the second valve plate 15. The filter device 14 is fixedly installed on the front of the valve body 1 by fixing bolts.

[0027] Example 2:

[0028] As shown in the attached diagram of the instruction manual. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a fully enclosed airflow control valve for ventilation ducts is used by first connecting the device to an external power source and an external controller. This provides the necessary electrical energy for the device's operation and also controls the drive motor 4 within the device. Then, the drive motor 4 is started via the external controller. The drive motor 4 drives the first rotating rod 5 to rotate, which in turn drives the main gear 6 and the first valve plate 7 to rotate. The main gear 6 drives the driven gear 8 to rotate, which in turn drives the second rotating rod 9 to rotate. The second rotating rod 9 then drives the second valve plate 15 to rotate. At this point, the first valve plate 7 and the second valve plate 15 abut against the first baffle 12 and the second baffle 13, preventing them from moving and thus sealing the cross-section of the valve body 1. The cooperation of the first baffle 12 and the second baffle 13 seals the gap between the first valve plate 7, the second valve plate 15, and the inner wall of the valve body 1. The first sealing plate 7.1 located at the lower end of the upper second valve plate 15 and the second sealing plate 7.2 located at the upper end of the first valve plate 7 are tightly fitted together, and the second sealing plate 7.2 located at the upper end of the lower second valve plate 15 and the first sealing plate 7.1 located at the lower end of the first valve plate 7 are tightly fitted together, thereby sealing the gap formed between the first valve plate 7 and the second valve plate 15. At the same time, by providing a first sealing strip 10 at the upper end of the inside of the valve body 1 and a second sealing strip 11 at the lower end of the inside of the valve body 1, the upper end of the upper second valve plate 15 and the first sealing strip 10 are tightly fitted together, and the lower end of the lower second valve plate 15 and the second sealing strip 11 are tightly fitted together, thereby preventing air from passing through the gap and ensuring the sealing performance of the constant air volume control valve during use.

[0029] The sealing performance of the constant air volume control valve is further improved by providing sealing gaskets 7.3 on both sides of the first sealing strip 10 and the second sealing strip 11.

[0030] A filter device 14 is fixedly installed on the front of the valve body 1 using fixing bolts. The filter screen 14.3 filters the air entering the valve body 1, ensuring clean ventilation and allowing the first valve plate 7 and the second valve plate 15 to be used for a long time. When the filter screen 14.3 needs cleaning or replacement, the slider 14.5 is pulled out of the slide groove 14.6 by pulling the handle 14.4, thereby removing the frame 14.2 from the filter box 14.1. The filter screen 14.3 can then be cleaned or replaced, thus extending its service life.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fully enclosed airflow control valve for ventilation ducts, characterized in that: The system includes a valve body (1), a first valve plate (7), and a filter device (14). A transmission box (3) is provided on one side of the valve body (1), and a drive motor (4) is provided on one side of the transmission box (3). A first rotating rod (5) is installed at the output end of the drive motor (4). The first rotating rod (5) passes through the valve body (1). A main gear (6) is provided on the periphery of the first rotating rod (5) and inside the transmission box (3). A first valve plate (7) is provided on the periphery of the first rotating rod (5) and inside the valve body (1). The main gear (6) meshes with the first rotating rod (5). Two driven gears (8) are connected. A second rotating rod (9) is provided on the other side of the driven gear (8). The second rotating rod (9) is installed inside the valve body (1). A second valve plate (15) is provided on the periphery of the second rotating rod (9) and inside the valve body (1). The first valve plate (7) is bi-directional blade-shaped. A first sealing plate (10) is provided at the bottom end of the first valve plate (7). A second sealing plate (11) is provided at the top end of the second valve plate (15). A filter device (14) is fixedly installed on the front of the valve body (1) by fixing bolts.

2. The fully enclosed airflow control valve for ventilation ducts according to claim 1, characterized in that: The valve body (1) has through holes (2) at its corners.

3. The fully enclosed airflow control valve for ventilation ducts according to claim 1, characterized in that: The valve body (1) is provided with a first sealing strip (7.1) at the bottom inside and a second sealing strip (7.2) at the top inside.

4. The fully enclosed airflow control valve for ventilation ducts according to claim 1, characterized in that: The valve body (1) has several first baffles (12) and second baffles (13) arranged at equal intervals on its side wall.

5. A fully enclosed airflow control valve for ventilation ducts according to claim 1, characterized in that: A sealing gasket (7.3) is provided on one side of the upper end and the other side of the lower end of the first valve plate (7).

6. A fully enclosed airflow control valve for ventilation ducts according to claim 1, characterized in that: The first valve plate (7) and the second valve plate (15) have the same structure.

7. A fully enclosed airflow control valve for ventilation ducts according to claim 1, characterized in that: The filtration device (14) includes a filter box (14.1), which is perforated. A frame (14.2) is movably connected to the filter box (14.1). A filter screen (14.3) is installed inside the frame (14.2). A handle (14.4) is provided at the top of the frame (14.2). Sliders (14.5) are provided on both sides of the frame (14.2). A sliding groove (14.6) is provided on the inner wall of the filter box (14.1). The slider (14.5) and the sliding groove (14.6) are slidably connected.

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