A manually operated split-leaf air volume control valve

Abstract

The utility model relates to the technical field of air volume regulating valve discloses a kind of manual split multi-leaf air volume regulating valve, including valve body, first rotating rod and second rotating rod, the middle part of the outer wall of valve body front end is fixedly connected with adjusting box, the middle part of adjusting box front end is provided with adjusting handle, the rear end of adjusting handle is fixedly connected with fixed link, the rear end of fixed link is through adjusting box to the inside of adjusting box and is fixedly connected with first driving gear and second driving gear, one side of fixed link is provided with first connecting rod.In the utility model, through complex gear and toothed belt transmission system, the power transmission from adjusting handle to both ends first rotating rod and second rotating rod is realized, this design ensures that no matter how many degrees adjusting handle rotates, the blade group at both ends of valve body can be synchronously rotated with exactly the same angle, avoids airflow distribution uneven or regulation failure caused by two sides blade opening inconsistency.

Description

Technical Field

[0001] This utility model relates to the field of air volume regulating valve technology, and in particular to a manual split-leaf multi-blade air volume regulating valve. Background Technology

[0002] Air volume regulating valves, also known as air dampers, are indispensable central air conditioning terminal accessories in ventilation, air conditioning, and air purification projects in industrial plants and civil buildings. They are generally used in air conditioning and ventilation system ducts to regulate the air volume of branch pipes. They can also be used for the mixed regulation of fresh air and return air. Manually operated split-leaf regulating valves can be installed on air ducts and connected to the ducts to control wind speed and regulate the indoor air supply volume.

[0003] Traditional airflow regulating valves may lack a precise gear and belt drive system, which makes it difficult for the blades at both ends to rotate completely synchronously. This asynchrony can easily cause inconsistent opening of the blades on both sides, resulting in uneven airflow distribution and affecting ventilation. In addition, traditional designs often use pure gear drive or other drive methods, which lack the shock absorption and buffering effect of a gear belt, which may generate a large impact and noise during operation.

[0004] Therefore, those skilled in the art have provided a manually operated split-leaf multi-blade air volume regulating valve to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a manually operated, split-leaf multi-blade airflow regulating valve. Through a complex gear and belt drive system, power is transmitted from the regulating handle to the first and second rotating rods at both ends. This design ensures that regardless of the angle at which the regulating handle is rotated, the blade groups at both ends of the valve body rotate synchronously at the exact same angle, avoiding uneven airflow distribution or regulation failure caused by inconsistent blade openings. Compared to pure gear drives, gear and belt drives typically offer better shock absorption and buffering capabilities, reducing impact and noise during operation. Furthermore, the regulating handle is located at the front of the regulating box, making it easy to operate. By rotating the handle, users can intuitively control the opening and closing of the blades to regulate the airflow.

[0006] To achieve the above objectives, this utility model provides a manually operated split-leaf multi-blade airflow regulating valve, comprising a valve body, a first rotating rod, and a second rotating rod. An regulating box is fixedly connected to the middle of the outer wall of the front end of the valve body. An regulating handle is provided at the middle of the front end of the regulating box. A fixing rod is fixedly connected to the rear end of the regulating handle. The rear end of the fixing rod passes through the regulating box to its interior and is fixedly connected to a first driving gear and a second driving gear. A first connecting rod is provided on one side of the fixing rod. A first driven gear is fixedly connected to the outer wall of the rear end of the first connecting rod. The outer wall gears of the first driving gear and the first driven gear mesh with a first toothed belt. A second connecting rod is provided on the other side of the fixing rod. A second driven gear is fixedly connected to the outer wall of the rear end of the second connecting rod. The outer wall gears of the second driving gear and the second driven gear mesh with a second toothed belt. The rear end of the fixing rod is rotatably connected to the middle of the outer wall of the front end of the valve body. The rear ends of the first connecting rod and the second connecting rod are respectively fixedly connected to the front ends of the first rotating rod and the second rotating rod.

[0007] Through the above technical solution, the power transmission from the adjustment handle to the first and second rotating rods at both ends is realized through the transmission system of the first driving gear 502, the first driven gear 504, the second driving gear 506, the second driven gear 508, the first toothed belt 505, and the second toothed belt 509. This design ensures that no matter how much the adjustment handle is rotated, the blade groups at both ends of the valve body can rotate synchronously at the same angle, avoiding uneven airflow distribution or adjustment failure caused by inconsistent opening of the blades on both sides. Compared with pure gear transmission, gear and belt transmission usually has better shock absorption and buffering capabilities, which can reduce the impact and noise during operation. In addition, the adjustment handle is located at the front of the adjustment box, which is easy to operate. By rotating the handle, the user can intuitively control the opening and closing of the blades to adjust the air volume.

[0008] Furthermore, a first blade and a second blade are fixedly connected to both sides of the outer wall of the first rotating rod and the second rotating rod, respectively. A first sealing gasket and a second sealing gasket are fixedly connected to the other side of the first blade and the first side of the second blade on adjacent sides, respectively. The front ends of the first rotating rod and the second rotating rod both penetrate the valve body to the interior of the regulating box, and the rear ends of the first rotating rod and the second rotating rod both rotate and fit against the inner wall of the rear end of the valve body.

[0009] The above technical solution, by directly fixing the blades to the rotating rod, has a compact structure and reliable connection. The rotation of the rotating rod can directly and efficiently drive the blades to rotate synchronously. In addition, through the gear and belt transmission mechanism, the two rotating rods can achieve synchronous rotation, ensuring that the blade groups on both sides can open and close at the same speed and angle.

[0010] Furthermore, both the first and second toothed belts are located inside the adjustment box;

[0011] By placing the toothed belts inside the adjustment box, the above technical solution can effectively protect them from external environmental factors such as dust, moisture, and oil. These contaminants may cause the toothed belts to wear, age faster, or even break. It also avoids direct collisions or scratches from external hard objects, reducing the risk of physical damage.

[0012] Furthermore, the outer walls of the first and second sealing gaskets on adjacent sides are tightly fitted together, and the outer walls of the first and second rotating rods are tightly fitted together with the inner wall of the valve body.

[0013] Through the above technical solution, the tight fit between the adjacent sides of the first and second sealing gaskets ensures that the gap between adjacent blades is effectively sealed when the blades are closed, reducing the possibility of air leakage from the blade gaps and improving the tightness of the valve in the closed state. In addition, the tight fit between the outer walls of the first and second rotating rods and the inner wall of the valve body ensures the seal between the blade edge and the valve body side wall, further preventing air leakage from the gap between the blades and the valve body.

[0014] Furthermore, flanges are fixedly connected to both the upper and lower surfaces of the valve body;

[0015] The above technical solution uses flanges for connection to the duct system.

[0016] This utility model has the following beneficial effects:

[0017] This invention proposes a manual split-leaf multi-blade airflow regulating valve. Through a complex gear and belt drive system, power is transmitted from the regulating handle to the first and second rotating rods at both ends. This design ensures that regardless of the angle at which the regulating handle is rotated, the blade groups at both ends of the valve body rotate synchronously at the exact same angle, avoiding uneven airflow distribution or regulation failure caused by inconsistent blade openings on both sides. Compared with pure gear drive, gear and belt drive generally has better shock absorption and buffering capabilities, reducing impact and noise during operation. In addition, the regulating handle is located at the front of the regulating box, making it easy to operate. By rotating the handle, the user can intuitively control the opening and closing of the blades to regulate the airflow. Attached Figure Description

[0018] Figure 1 This is an isometric view of a manually operated, split-leaf multi-blade air volume regulating valve proposed in this utility model.

[0019] Figure 2 This is a partial structural isometric view of a manual split-leaf multi-blade air volume regulating valve proposed in this utility model;

[0020] Figure 3This is an exploded view of a portion of the structure of a manually operated, split-leaf multi-blade air volume regulating valve proposed in this utility model.

[0021] Figure 4 This is a partial exploded view of the structure of a manual split-leaf multi-blade air volume regulating valve proposed in this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Valve body; 101. Flange; 2. Adjusting box; 3. First rotating rod; 301. First vane; 302. First sealing gasket; 4. Second rotating rod; 401. Second vane; 402. Second sealing gasket; 5. Adjusting handle; 501. Fixed rod; 502. First driving gear; 503. First connecting rod; 504. First driven gear; 505. First toothed belt; 506. Second driving gear; 507. Second connecting rod; 508. Second driven gear; 509. Second toothed belt. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Reference Figure 1 , Figure 3 and Figure 4This utility model provides a specific embodiment: a manually operated split-leaf multi-blade airflow regulating valve, including a valve body 1, a first rotating rod 3, and a second rotating rod 4. A regulating box 2 is fixedly connected to the middle of the outer wall of the front end of the valve body 1. An regulating handle 5 is provided at the middle of the front end of the regulating box 2. A fixing rod 501 is fixedly connected to the rear end of the regulating handle 5. The rear end of the fixing rod 501 passes through the regulating box 2 into its interior and is fixedly connected to a first driving gear 502 and a second driving gear 506. A first connecting rod 503 is provided on one side of the fixing rod 501. A first driven gear 504 is fixedly connected to the outer wall of the rear end of the first connecting rod 503. A first toothed belt 505 meshes with the outer wall gears of the first driving gear 502 and the first driven gear 504. A second connecting rod 507 is provided on the other side of the fixing rod 501. A second driven gear 508 is fixedly connected to the outer wall of the rear end of the second connecting rod 507. A second toothed belt 509 meshes with the outer wall gears of the second driving gear 506 and the second driven gear 508. The rear end of the fixed rod 501 is rotatably connected to the middle of the front outer wall of the valve body 1. The rear ends of the first connecting rod 503 and the second connecting rod 507 are fixedly connected to the front ends of the first rotating rod 3 and the second rotating rod 4, respectively. Through the transmission system of the first driving gear 502, the first driven gear 504, the second driving gear 506, the second driven gear 508, the first toothed belt 505, and the second toothed belt 509, the power transmission from the adjusting handle 5 to the first rotating rod 3 and the second rotating rod 4 at both ends is realized. This design ensures that no matter how much the adjusting handle 5 is rotated, the blade groups at both ends of the valve body can rotate synchronously at the same angle, avoiding uneven airflow distribution or adjustment failure caused by inconsistent opening of the blades on both sides. Compared with pure gear transmission, gear and belt transmission usually has better shock absorption and buffering capabilities, which can reduce the impact and noise during operation. In addition, the adjusting handle 5 is located at the front end of the regulating box 2, which is easy to operate. By rotating the handle, the user can intuitively control the opening and closing of the blades to adjust the air volume.

[0026] Reference Figure 1 and Figure 2 The first rotating rod 3 and the second rotating rod 4 are respectively fixedly connected to the outer walls of the two sides of the first rotating rod 3 and the second rotating rod 4. The first sealing gasket 302 and the second sealing gasket 402 are respectively fixedly connected to the other side of the first rotating rod 301 and the second rotating rod 401 on the adjacent sides. The front ends of the first rotating rod 3 and the second rotating rod 4 penetrate through the valve body 1 to the interior of the regulating box 2. The rear ends of the first rotating rod 3 and the second rotating rod 4 are rotatably fitted with the inner wall of the rear end of the valve body 1. By directly fixing the blades to the rotating rods, the structure is compact and the connection is reliable. The rotation of the rotating rods can directly and efficiently drive the blades to rotate synchronously. In addition, through the gear and belt transmission mechanism, the two rotating rods can achieve synchronous rotation, ensuring that the blade groups on both sides can open and close at the same speed and angle.

[0027] Reference Figure 1 , Figure 2 and Figure 3 The first toothed belt 505 and the second toothed belt 509 are both located inside the regulating box 2. By placing the toothed belts inside the regulating box 2, they can be effectively protected from external environmental factors such as dust, moisture, and oil. These contaminants may cause the toothed belts to wear, age faster, or even break. Direct collisions or scratches from external hard objects are also avoided, reducing the risk of physical damage. The outer walls of the first sealing gasket 302 and the second sealing gasket 402 are tightly fitted on adjacent sides. The outer walls of the first rotating rod 3 and the second rotating rod 4 are also tightly fitted to the inner wall of the valve body 1. The tight fit between the gasket 302 and the second sealing gasket 402 on their adjacent sides ensures that the gap between adjacent blades is effectively sealed when the blades are closed, reducing the possibility of air leakage from the blade gaps and improving the tightness of the valve in the closed state. In addition, the tight fit between the outer wall of the first rotating rod 3 and the second rotating rod 4 and the inner wall of the valve body 1 ensures the seal between the blade edge and the valve body side wall, further preventing air leakage from the gap between the blade and the valve body. Flanges 101 are fixedly connected to both the upper and lower surfaces of the valve body 1, and are used to connect to the duct system.

[0028] Working principle: First, the user holds the adjustment handle 5 located at the center of the front end of the regulating box 2 and rotates the adjustment handle 5 in the direction where the airflow needs to be adjusted. The fixing rod 501 at the rear end of the handle rotates accordingly. The first driving gear 502 and the second driving gear 506 are fixed at the rear end of the fixing rod 501. Therefore, the rotation of the fixing rod 501 drives the two driving gears to rotate synchronously. The first driving gear 502 drives the first driven gear 504 to rotate through the first toothed belt 505. At the same time, the second driving gear 506 drives the second driven gear 508 to rotate through the second toothed belt 509. Both of these transmission systems are located inside the protected regulating box 2. The first driven gear 504 is fixed to the rear end of the first connecting rod 503, and its rotation drives the first connecting rod 503 to rotate. Similarly, the second driven gear 508 is fixed to the rear end of the first connecting rod 503. The rear end of the connecting rod 507 drives the second connecting rod 507 to rotate. The rear ends of the first connecting rod 503 and the second connecting rod 507 are respectively fixedly connected to the front ends of the first rotating rod 3 and the second rotating rod 4. Therefore, the rotation of the connecting rod is directly transmitted to the rotating rods at both ends, making them rotate synchronously. Blades are fixed on the first rotating rod 3 and the second rotating rod 4. The synchronous rotation of the rotating rods drives the blade groups on both sides to open and close synchronously at the same speed and angle. The rotation of the blades changes the flow cross section of the air duct. When the blades are parallel to the airflow, the air volume is the largest, and when they are perpendicular, the air volume is the smallest. In the closed state, the sealing gaskets between adjacent blades are tightly fitted, and the blade edges are also tightly fitted to the inner wall of the valve body, ensuring good sealing and effectively preventing air leakage. By observing or measuring the air volume, the user can rotate the adjustment handle 5 to the desired position to complete the air volume setting.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manually operated split-leaf multi-blade airflow regulating valve, comprising a valve body (1), a first rotating rod (3), and a second rotating rod (4), characterized in that: An adjusting box (2) is fixedly connected to the middle of the outer wall of the front end of the valve body (1). An adjusting handle (5) is provided at the middle of the front end of the adjusting box (2). A fixing rod (501) is fixedly connected to the rear end of the adjusting handle (5). The rear end of the fixing rod (501) passes through the adjusting box (2) into the interior of the adjusting box (2) and is fixedly connected to a first driving gear (502) and a second driving gear (506). A first connecting rod (503) is provided on one side of the fixing rod (501). A first driven gear (504) is fixedly connected to the outer wall of the rear end of the first connecting rod (503). The first driving gear (502) and the first driven gear (504) are connected to each other. The outer wall gear of the driving gear (504) meshes with the first toothed belt (505). The other side of the fixed rod (501) is provided with a second connecting rod (507). The outer wall of the rear end of the second connecting rod (507) is fixedly connected with a second driven gear (508). The outer wall gears of the second driving gear (506) and the second driven gear (508) mesh with the second toothed belt (509). The rear end of the fixed rod (501) is rotatably connected to the middle of the front end outer wall of the valve body (1). The rear ends of the first connecting rod (503) and the second connecting rod (507) are fixedly connected to the front ends of the first rotating rod (3) and the second rotating rod (4), respectively.

2. The manually operated split-leaf multi-blade air volume regulating valve according to claim 1, characterized in that: The first rotating rod (3) and the second rotating rod (4) are respectively fixedly connected to the outer walls of the two sides of the outer wall of the first rotating rod (3) and the second rotating rod (4). The first sealing gasket (302) and the second sealing gasket (402) are respectively fixedly connected to the other side of the first rotating rod (301) and the second rotating rod (401) on the adjacent sides. The front ends of the first rotating rod (3) and the second rotating rod (4) penetrate through the valve body (1) to the interior of the regulating box (2). The rear ends of the first rotating rod (3) and the second rotating rod (4) rotate and fit against the inner wall of the rear end of the valve body (1).

3. A manually operated, split-leaf multi-blade airflow regulating valve according to claim 1, characterized in that: The first toothed belt (505) and the second toothed belt (509) are both located inside the regulating box (2).

4. A manually operated, split-leaf multi-blade airflow regulating valve according to claim 2, characterized in that: The outer walls of the first sealing gasket (302) and the second sealing gasket (402) are tightly fitted on adjacent sides, and the outer walls of the first rotating rod (3) and the second rotating rod (4) are tightly fitted with the inner wall of the valve body (1).

5. A manually operated, split-leaf multi-blade airflow regulating valve according to claim 1, characterized in that: Flanges (101) are fixedly connected to both the upper and lower surfaces of the valve body (1).

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