Self-locking stepless air regulating door

Abstract

The invention relates to the technical field of valves, and discloses a self-locking stepless air adjusting door which comprises a valve body, a driving locking mechanism and a blade assembly, the driving locking mechanism is arranged on the outer wall of the valve body, a worm is arranged at the output end of a driving motor, a worm gear meshed with the worm is arranged on the outer wall of the valve body, and the worm gear and an adjusting gear coaxially rotate; a rack is arranged at one end of the adjusting rod and matched with the adjusting gear in a meshed mode, the connecting rod is connected to the adjusting rod, the blade assembly is arranged on an inner cavity of the valve body and comprises a telescopic rod, an installation plate, an air adjusting plate, an air guiding plate and a parallelogram mechanism, and the installation plate is installed on the wall of the inner cavity of the valve body. The air adjusting plate is rotationally matched with the mounting plate through a rotating shaft, the rotating shaft extends out of the valve body and is fixedly connected with a telescopic rod, the telescopic rod is connected with an adjusting rod, and the air guiding plate is parallel to the mounting plate; the opening degree of the valve can be steplessly adjusted, it is ensured that the air adjusting plate can stably keep the opening angle, air guiding constraint is conducted on airflow, and the air speed is effectively stabilized.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and particularly to a self-locking stepless air damper. Background Art

[0002] Under the condition of the same air volume, when the air outlet area is different, the wind speed is also different, and for different wind speeds, the distance that the air flow can reach is also different. Based on the demand for energy-saving automatic control, the existing electric control air dampers can often only be opened or closed, and cannot realize stepless adjustment of the air outlet based on the idea of automatic control; secondly, simply adjusting the blades cannot achieve the stability of the wind speed. It only speeds up locally at the air outlet interface and cannot form a restraining effect on the air flow to control the wind speed after the air flow leaves the air outlet. Summary of the Invention

[0003] The purpose of the present invention is to provide a self-locking stepless air damper, which can adjust the opening degree of the valve steplessly, ensure that the air damper plate can stably maintain the opening angle, conduct and restrain the air flow, and effectively stabilize the wind speed.

[0004] To achieve the above purpose, the present invention provides a self-locking stepless air damper, which includes a valve body, a driving and locking mechanism, and a blade assembly. The driving and locking mechanism is arranged on the outer wall of the valve body. The driving and locking mechanism includes a driving motor, an adjusting gear, an adjusting rod, and a connecting rod. A worm is provided at the output end of the driving motor. A worm gear meshing with the worm is provided on the outer wall of the valve body. The worm gear rotates coaxially with the adjusting gear. The adjusting rod is slidably matched with the outer wall of the valve body. A rack arranged along the length direction of the adjusting rod is provided at one end of the adjusting rod. The rack is meshed and matched with the adjusting gear. The connecting rod is connected to the adjusting rod. The blade assembly is arranged in the inner cavity of the valve body. The blade assembly includes a telescopic rod, a mounting plate, an air damper plate, a guiding plate, and a parallelogram mechanism. The mounting plate is mounted on the inner cavity wall of the valve body. One end of the air damper plate is rotatably matched with the mounting plate through a rotating shaft. One end of the rotating shaft extends out of the valve body and is fixedly connected to one end of the telescopic rod. The other end of the telescopic rod is rotatably connected to the adjusting rod. The parallelogram mechanism includes a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod connected in sequence end to end. The air damper plate is connected to the first connecting rod. The guiding plate is connected to the second connecting rod. The guiding plate is parallel to the mounting plate.

[0005] As a preferred solution of the present invention, a first limiting ring and a second limiting ring are provided on the outer wall of the valve body. Both the first limiting ring and the second ring are provided with moving grooves slidably matched with the adjusting rod, and the connecting rod is located between the first limiting ring and the second limiting ring.

[0006] As a preferred embodiment of the present invention, the valve body is a rectangular body, and two sets of blade assemblies are symmetrically arranged.

[0007] As a preferred embodiment of the present invention, at least two sets of the parallelogram mechanisms are provided on each air regulating plate.

[0008] As a preferred embodiment of the present invention, sealing strips for cooperating with the inner cavity wall of the valve body are provided on both sides of the air guiding plate and the air regulating plate.

[0009] As a preferred embodiment of the present invention, connecting flanges are provided on both the air inlet side and the air outlet side of the valve body.

[0010] As a preferred embodiment of the present invention, the telescopic rod is a pneumatic telescopic rod.

[0011] Compared with the prior art, the self-locking stepless air regulating door of the embodiment of the present invention has the beneficial effects that:

[0012] In the present invention, the driving motor drives the adjusting gear to rotate through the worm and gear, and then drives the adjusting rod to move back and forth, synchronously drives the connecting rod to move, and under the action of the telescopic rod, the rotating shaft rotates, so that the air regulating plate rotates synchronously to adjust the opening angle of the air regulating plate, realizing stepless adjustment of the valve opening; moreover, the air guiding plate maintains a horizontal angle under the action of the parallelogram mechanism, guiding and restricting the air flow, effectively stabilizing the wind speed; in addition, when the air regulating plate is affected by the air flow, due to the self-locking effect of the worm and gear and the linear transmission of the rack of the adjusting gear and the adjusting rod, the self-locking of the rack of the adjusting rod can be realized, ensuring that the air regulating plate can stably maintain the opening angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0014] Figure 1 Structural schematic diagram of a self-locking stepless air regulating door provided by the present invention Figure 1 ;

[0015] Figure 2 For Figure 1 View A in

[0016] Figure 3 Structural schematic diagram of a self-locking stepless air regulating door provided by the present invention Figure 2 ;

[0017] Figure 4 Structural schematic diagram of a self-locking stepless air regulating door provided by the present invention Figure 3 ;

[0018] Figure 5 Internal structural schematic diagram of the valve body provided by the present invention;

[0019] In the figure, there are valve body 1; first limiting ring 11; second limiting ring 12; connecting flange 13; drive locking mechanism 2; drive motor 21; adjusting gear 22; adjusting rod 23; rack 231; connecting rod 24; worm 25; blade assembly 3; telescopic rod 31; mounting plate 32; air regulating plate 33; air guiding plate 34; parallelogram mechanism 35; first link member 351; second link member 352; third link member 353; fourth link member 354; rotating shaft 36. Detailed implementation manners

[0020] The following will further describe in detail the specific implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0022] As Figures 1 to 5As shown in the figure, a self-locking stepless air damper according to a preferred embodiment of the present invention includes a valve body 1, a drive locking mechanism 2, and a blade assembly 3. The drive locking mechanism 2 is provided on the outer wall of the valve body 1. The drive locking mechanism 2 includes a drive motor 21, an adjusting gear 22, an adjusting rod 23, and a connecting rod 24. A worm 25 is provided at the output end of the drive motor 21. A worm gear meshing with the worm 25 is provided on the outer wall of the valve body 1. The worm gear rotates coaxially with the adjusting gear 22. The adjusting rod 23 is slidably engaged with the outer wall of the valve body 1. A rack 231 arranged along its length direction is provided at one end of the adjusting rod 23. The rack 231 is meshed and engaged with the adjusting gear 22. The connecting rod 24 is connected to the adjusting rod 23. The blade assembly 3 is provided in the inner cavity of the valve body 1. The blade assembly 3 includes a telescopic rod 31, a mounting plate 32, an air damper plate 33, a wind guiding plate 34, and a parallelogram mechanism 35. The mounting plate 32 is mounted on the inner cavity wall of the valve body 1. One end of the air damper plate 33 is rotatably engaged with the mounting plate 32 through a rotating shaft 36. One end of the rotating shaft 36 extends outside the valve body 1 and is fixedly connected to one end of the telescopic rod 31. Specifically, the air damper plate 33 is fixedly connected to the rotating shaft 36, and the mounting plate 32 is rotatably connected to the rotating shaft 36. The air damper plate 33 is close to the air inlet side of the valve body 1, and the wind guiding plate 34 is close to the air outlet side of the valve body 1. The other end of the telescopic rod 31 is rotatably connected to the adjusting rod 23. The telescopic rod 31 is located on the outer wall of the valve body 1. The telescopic rod 31 is preferably a pneumatic telescopic rod 31. The parallelogram mechanism 35 includes a first link member 351, a second link member 352, a third link member 353, and a fourth link member 354 connected in sequence end to end. The air damper plate 33 is connected to the first link member 351, and the wind guiding plate 34 is connected to the second link member 352. The wind guiding plate 34 is parallel to the mounting plate 32.

[0023] In the present invention, the drive motor 21 drives the adjusting gear 22 to rotate through the worm and worm gear 25, and then drives the adjusting rod 23 to move back and forth, synchronously driving the connecting rod 24 to move. And under the action of the telescopic rod 31, the rotating shaft 36 rotates, so that the air damper plate 33 rotates synchronously to adjust the opening angle of the air damper plate 33, realizing stepless adjustment of the valve opening; moreover, the wind guiding plate 34 maintains a horizontal angle under the action of the parallelogram mechanism 35, guiding and restricting the air flow, effectively stabilizing the wind speed; in addition, when the air damper plate 33 is affected by the air flow, with the self-locking effect of the worm and worm gear 25 combined with the linear transmission of the rack 231 of the adjusting gear 22 and the adjusting rod 23, the self-locking of the rack 231 of the adjusting rod 23 can be realized, ensuring that the air damper plate 33 can stably maintain the opening angle.

[0024] Exemplarily, a first limiting ring 11 and a second limiting ring 12 are provided on the outer wall of the valve body 1. The first limiting ring 11 and the second limiting ring are both provided with movable grooves that slidably cooperate with the adjusting rod 23, and the connecting rod 24 is located between the first limiting ring 11 and the second limiting ring 12.

[0025] The movement range of the connecting rod 24 is realized to be between the first limiting ring 11 and the second limiting ring 12, the movement range of the adjusting rod 23 is restricted, the maximum angle when the air regulating plate 33 is opened and the minimum angle when it is closed are effectively controlled, and interference between the two air regulating plates 33 and between the air regulating plate 33 and the valve body 1 is avoided, ensuring safe operation.

[0026] Exemplarily, the valve body 1 is a rectangular body, and two groups of blade assemblies 3 are symmetrically arranged. The opening degree of the stepless regulating valve is realized to be synchronously controlled by a group of driving and locking mechanisms 2 for the two groups of blade assemblies 3.

[0027] Exemplarily, at least two groups of parallelogram mechanisms 35 are provided on each air regulating plate 33, effectively improving the connection stability between the air guiding plate 34 and the air regulating plate 33.

[0028] Exemplarily, sealing strips that cooperate with the inner cavity wall of the valve body 1 are provided on both sides of the air guiding plate 34 and the air regulating plate 33 to prevent air leakage of the self-locking stepless air regulating door.

[0029] Exemplarily, connection flanges 13 are provided on both the air inlet side and the air outlet side of the valve body 1, facilitating connection with the ventilation duct.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A self-locking stepless air door, characterized in that: The invention comprises a valve body, a driving locking mechanism and a blade assembly, wherein the driving locking mechanism is arranged on the outer wall of the valve body, the driving locking mechanism comprises a driving motor, an adjusting gear, an adjusting rod and a connecting rod, a worm is arranged at the output end of the driving motor, a worm wheel meshing with the worm is arranged on the outer wall of the valve body, the worm wheel rotates coaxially with the adjusting gear, the adjusting rod is slidably matched with the outer wall of the valve body, a rack arranged along the length direction of the adjusting rod is arranged on one end of the adjusting rod, the rack meshes with the adjusting gear, the connecting rod is connected to the adjusting rod, the blade assembly is arranged on the inner cavity of the valve body, and the The blade assembly includes a telescopic rod, a mounting plate, an air adjusting plate, an air guide plate and a parallelogram mechanism. The mounting plate is mounted on the inner cavity wall of the valve body, one end of the air adjusting plate is rotatably matched with the mounting plate through a rotating shaft, one end of the rotating shaft extends out of the valve body and is fixedly connected to one end of the telescopic rod, the other end of the telescopic rod is rotatably connected to the adjusting rod, and the parallelogram mechanism includes a first connecting rod member, a second connecting rod member, a third connecting rod member and a fourth connecting rod member connected end to end in sequence, the air adjusting plate is connected to the first connecting rod member, the air guide plate is connected to the second connecting rod member, and the air guide plate is parallel to the mounting plate.

2. The self-locking stepless air door according to claim 1, characterized in that: A first limiting ring and a second limiting ring are provided on the outer wall of the valve body, and both the first limiting ring and the second ring are provided with a movable groove that slidably cooperates with the adjusting rod, and the connecting rod is located between the first limiting ring and the second limiting ring.

3. The self-locking stepless air door according to claim 1, characterized in that: The valve body is a rectangular body, and the blade components are symmetrically arranged in two groups.

4. The self-locking stepless air door according to claim 1, characterized in that: At least two groups of the parallelogram mechanisms are arranged on each of the air regulating plates.

5. The self-locking stepless air door according to claim 1, characterized in that: Both sides of the air guide plate and the air regulating plate are provided with sealing strips matched with the inner cavity wall of the valve body.

6. The self-locking stepless air door according to claim 1, characterized in that: The air inlet side and the air outlet side of the valve body are both provided with connecting flanges.

7. The self-locking stepless air door according to claim 1, characterized in that: The telescopic rod is a pneumatic telescopic rod.

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