Multi-blade air supply outlet capable of automatically resetting

Abstract

The utility model discloses a multi-blade air supply outlet capable of resetting automatically, which comprises a ventilation pipeline cover used for being connected to an air supply pipeline, five ventilation openings are arranged on the ventilation pipeline cover, a connecting seat is fixedly connected to the position of the ventilation pipeline cover corresponding to the ventilation openings, and a positioning notch is arranged on the connecting seat. The ventilating duct cover has the advantages that the ventilating duct cover can be fixed to the air outlet of the air supply duct, the connecting base fixed to the ventilating duct cover can guide supplied air, and the fan blade cover plate arranged on the connecting base can close and open the connecting base; and then the arranged automatic reset mechanism can pull the fan blade cover plate to reset, so that the connecting seat can be automatically closed through the fan blade cover plate when air exhaust is stopped, air exhaust backflow can be avoided, meanwhile, the automatic reset mechanism can be adjusted, and the service life of the device can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust fire dampers, in particular to a multi-leaf air supply outlet capable of automatically resetting. Background Art

[0002] The smoke exhaust fire damper is a fire protection component, which is generally installed on the pipe of the mechanical smoke exhaust system. It is usually in the open state. When a fire occurs, the smoke exhaust is opened. When the smoke temperature in the smoke exhaust pipe reaches 280 degrees, it is closed and meets the smoke leakage and fire resistance integrity requirements within a certain period of time, playing the role of smoke isolation and fire prevention. Fire dampers are widely used in various industries, but in daily life, smoke exhaust fire dampers are the most commonly used. Smoke exhaust fire dampers play the role of automatically reducing the fire during a fire. In fact, the fire prevention effect of smoke exhaust fire dampers is closely related to its quality. According to the fire damper manufacturer, smoke exhaust fire dampers need to undergo various tests to test their performance before leaving the factory. If the smoke exhaust fire damper closes freely during a fire, it means that the product can be put into normal use. There are two items in the smoke exhaust fire damper product testing: closing reliability. In 10 closing operations, the fire damper should be able to close flexibly and reliably from the opening position to the closing position. The components should not have obvious deformation, wear and other damage that affects its sealing performance.

[0003] However, the existing smoke exhaust fire damper needs to be manually reset after use. Since the smoke exhaust fire damper is generally installed in high-rise buildings, the reset is relatively cumbersome. The existing reset mechanism needs to be driven by a power device, which can be damaged in harsh environments, causing the automatic reset mechanism to fail to operate. Secondly, the spring used for the existing reset will cause the elastic potential energy to decrease after long-term use, thereby affecting its service life. Therefore, there is an urgent need for an automatically reset multi-leaf air outlet to solve the above problems. Utility Model Content

[0004] In order to solve the above problems, the present invention provides a multi-leaf air outlet that can automatically reset. The present invention is achieved through the following technical solutions.

[0005] A multi-leaf air supply outlet that can be automatically reset includes a ventilation duct cover for connecting to the air supply duct, the ventilation duct cover is provided with five ventilation openings, and the ventilation duct cover is fixedly connected to a connecting seat at positions corresponding to the ventilation openings, the connecting seat is provided with a positioning notch, and a rotating shaft groove is provided on one side of the positioning notch, the connecting seat is covered on the positioning notch by a fan cover plate, and an automatic reset mechanism is provided between the connecting seat and the fan cover plate, and the automatic reset mechanism is used to pull the rotating fan cover plate to automatically reset and cover it on the connecting seat.

[0006] Furthermore, the automatic reset mechanism includes a fixed frame and a push-pull rod, the fixed frame is fixedly connected to one side of the inside of the connecting seat, the inside of the fixed frame is fixedly connected with a screw rod and a sliding rod, the screw rod is provided with a spring and an adjustment knob, one end of the push-pull rod is rotatably connected to the first rotating seat, the other end of the push-pull rod is rotatably connected to the second rotating seat, and the bottom of the second rotating seat is fixedly connected to the movable seat.

[0007] Furthermore, the first rotating seat is fixedly connected to the fan blade cover, the second rotating seat is movably connected to the screw rod, and the movable seat is slidably matched with the sliding rod.

[0008] Furthermore, the spring is fixedly connected between the second rotating seat and the adjusting knob, and the adjusting knob is threadably matched with the screw rod.

[0009] Furthermore, the rotation angle between the connecting seat and the fixing bracket is 0-45°.

[0010] Furthermore, both sides of the connecting seat are fixedly connected with lifting ears, and bolts are provided on the lifting ears. The screw holes provided on the ventilation duct cover cooperate with the bolts, and the lifting ears are fixedly connected to the ventilation duct cover by bolts, and the ventilation duct cover is connected to the connecting seat.

[0011] The beneficial effect of the present invention is that, during the operation of the device, first, the ventilation duct cover can be fixed on the air outlet of the air supply duct, the connecting seat fixed on the ventilation duct cover can guide the air supply, the fan blade cover provided on the connecting seat can close and open the connecting seat, and then the automatic reset mechanism provided can pull the fan blade cover to reset it, so that the connecting seat can automatically close through the fan blade cover when the exhaust stops, which can avoid the exhaust air backflow, and at the same time the automatic reset mechanism can be adjusted, which can improve the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 : A schematic structural diagram of an automatically resettable multi-leaf air outlet according to the present invention;

[0014] Figure 2 : A schematic diagram of the structure of the ventilation duct cover of the utility model;

[0015] Figure 3 : A partial schematic diagram of the connecting seat of the utility model;

[0016] Figure 4 : Schematic diagram of the connection between the connecting seat and the fan cover of the utility model;

[0017] Figure 5 : The utility model Figure 4 A magnified view of center.

[0018] The reference numerals are as follows:

[0019] 1. Ventilation duct cover; 11. Ventilation opening;

[0020] 2. Connecting seat; 21. Fan blade cover; 22. Positioning notch; 221. Rotating shaft slot; 23. Lifting lug;

[0021] 3. Fixing bracket; 31. Screw rod; 311. Spring; 312. Adjusting knob; 32. Sliding rod;

[0022] 4. Push-pull rod; 41. First rotating seat; 42. Second rotating seat; 421. Movable seat. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1-5 As shown, the utility model has the following specific embodiments.

[0025] Example:

[0026] A multi-leaf air outlet with automatic reset, including a ventilation duct cover 1 for connecting to the air supply duct, five ventilation holes 11 are provided on the ventilation duct cover 1, and a connecting seat 2 is fixedly connected to the positions corresponding to the ventilation holes 11 on the ventilation duct cover 1, a positioning notch 22 is provided on the connecting seat 2, and a rotating shaft groove 221 is provided on one side of the positioning notch 22, and the connecting seat 2 is covered on the positioning notch 22 by a fan cover 21. An automatic reset mechanism is provided between the connecting seat 2 and the fan cover 21, and the automatic reset mechanism is used to pull the rotating fan cover 21 to automatically reset and cover the connecting seat 2.

[0027] By adopting the above technical solution, when using the device, first the ventilation duct cover 1 can be fixed on the air outlet of the air supply duct, the connecting seat 2 fixed on the ventilation duct cover 1 can guide the air supply, and the fan cover 21 set on the connecting seat 2 can close and open the connecting seat 2, and then the automatic reset mechanism set can pull the fan cover 21 to reset, so that the connecting seat 2 can be automatically closed by the fan cover 21 when the exhaust stops, which can avoid the exhaust backflow, and at the same time the automatic reset mechanism can be adjusted, which can improve the service life of the device.

[0028] Specifically, the automatic reset mechanism includes a fixed frame 3 and a push-pull rod 4. The fixed frame 3 is fixedly connected to one side of the interior of the connecting base 2. A screw rod 31 and a slide rod 32 are fixedly connected to the interior of the fixed frame 3. A spring 311 and an adjustment knob 312 are provided on the screw rod 31. One end of the push-pull rod 4 is rotatably connected to a first rotating base 41. The other end of the push-pull rod 4 is rotatably connected to a second rotating base 42. The bottom of the second rotating base 42 is fixedly connected to a movable base 421.

[0029] The first rotating seat 41 is fixedly connected to the fan cover 21, the second rotating seat 42 is movably connected to the screw rod 31, and the movable seat 421 is slidably engaged with the slide rod 32;

[0030] The spring 311 is fixedly connected between the second rotating seat 42 and the adjusting knob 312 , and the adjusting knob 312 is threadedly engaged with the screw rod 31 ;

[0031] The rotation angle between the connecting base 2 and the fixing bracket 3 is 0-45°.

[0032] By adopting the above technical solution, the fan blade cover 21 covered on the connecting seat 2 can be automatically closed. When the ventilation duct connected to the ventilation duct cover 1 delivers ventilation, the wind force it delivers can apply pressure to the fan blade cover 21, and the thrust can push the fan blade cover 21 to rotate and open on the connecting seat 2. During the process of rotating and opening the fan blade cover 21, the fan blade cover 21 pulls the push-pull rod 4 to move through the connected first rotating seat 41, and the push-pull rod 4 moves on the slide rod 32 through the connected second rotating seat 42, and the second rotating seat 42 can press the connected spring 31 during the movement. 1 is squeezed and energy is stored. When the air supply stops, the wind force acting on the fan cover 21 is eliminated. At this time, the energy-stored spring 311 can push the movable second rotating seat 42 to reset, so that the push-pull rod 4 pulls the fan cover 21 to automatically reset and cover the connecting seat 2. Among them, the provided adjusting knob 312 can rotate on the screw rod 31. When the screw rod 31 moves to the right, the force required for the spring 311 to store energy can be increased, thereby prolonging the service life of the spring 311 and preventing the fan cover 21 from being unable to close due to the failure of the elastic effect of the spring 311 after long-term use.

[0033] Specifically, both sides of the connecting seat 2 are fixedly connected with a lifting ear 23, and a bolt is provided on the lifting ear 23. The screw holes provided on the ventilation duct cover 1 cooperate with the bolts, and the lifting ear 23 is fixedly connected to the ventilation duct cover 1 by bolts, and the ventilation duct cover 1 is connected to the connecting seat 2.

[0034] By adopting the above technical solution, the connecting seat 2 can be fixedly connected to the ventilation duct cover 1 through the provided lifting lugs 23 , so that the ventilation opening 11 on the ventilation duct cover 1 is communicated with the connecting seat 2 .

[0035] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatically resettable multi-leaf air outlet, comprising a ventilation duct cover (1) for connection to an air supply duct, characterized in that: The ventilation duct cover (1) is provided with five ventilation openings (11), and a connecting seat (2) is fixedly connected to the positions of the ventilation duct cover (1) corresponding to the ventilation openings (11), and a positioning notch (22) is provided on the connecting seat (2), and a rotating shaft groove (221) is provided on one side of the positioning notch (22), and the connecting seat (2) is covered on the positioning notch (22) by a fan cover (21), and an automatic reset mechanism is provided between the connecting seat (2) and the fan cover (21), and the automatic reset mechanism is used to pull the rotating fan cover (21) to automatically reset and cover the connecting seat (2).

2. The automatically resettable multi-leaf air outlet according to claim 1, characterized in that: The automatic reset mechanism comprises a fixed frame (3) and a push-pull rod (4), wherein the fixed frame (3) is fixedly connected to one side of the interior of the connecting seat (2), a screw rod (31) and a slide rod (32) are fixedly connected to the interior of the fixed frame (3), a spring (311) and an adjusting knob (312) are provided on the screw rod (31), one end of the push-pull rod (4) is rotatably connected to a first rotating seat (41), and the other end of the push-pull rod (4) is rotatably connected to a second rotating seat (42), and the bottom of the second rotating seat (42) is fixedly connected to a movable seat (421).

3. The automatically resettable multi-leaf air outlet according to claim 2, characterized in that: The first rotating seat (41) is fixedly connected to the fan blade cover (21), the second rotating seat (42) is movably connected to the screw rod (31), and the movable seat (421) is slidably matched with the slide rod (32).

4. The automatically resettable multi-leaf air outlet according to claim 2, characterized in that: The spring (311) is fixedly connected between the second rotating seat (42) and the adjusting knob (312), and the adjusting knob (312) is threadedly engaged with the screw rod (31).

5. The multi-leaf air outlet capable of automatically resetting according to claim 2, characterized in that: The rotation angle between the connecting seat (2) and the fixing frame (3) is 0-45°.

6. The automatically resettable multi-leaf air outlet according to claim 1, characterized in that: Both sides of the connecting seat (2) are fixedly connected with lifting ears (23), bolts are provided on the lifting ears (23), screw holes provided on the ventilation duct cover (1) and the bolts cooperate with each other, and the lifting ears (23) are fixedly connected to the ventilation duct cover (1) by bolts, and the ventilation duct cover (1) is communicated with the connecting seat (2).

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