Closed air valve

Abstract

The utility model discloses a closed air valve, including frame, be equipped with the middle baffle in the frame, be equipped with a plurality of reinforcing bars between the middle baffle and frame, be equipped with a plurality of upper blade and lower blade between the middle baffle and frame, the inside of upper blade is equipped with upper rotary lever, the both ends of upper rotary lever are rotatively connected frame and middle baffle, one end of upper rotary lever is fixedly equipped with the upper transmission arm in the frame, the one end of upper transmission arm is rotatively connected upper rotary lever away from upper rotary lever, the inside of lower blade is equipped with lower rotary lever, the both ends of lower rotary lever are rotatively connected frame and middle baffle, the clearance between the blade when the blade is closed is sealed to the clearance between the blade and frame, middle baffle through sealing rubber strip and sealing washer, improve the airtightness, secondly, the drive shaft cooperation transmission arm and rotary lever that are equipped can accurate control the angle size of blade opening and closing according to the number of turns of drive shaft, realize accurate control.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, specifically a sealed air valve. Background Technology

[0002] In factory buildings and residential buildings, indoor ventilation is necessary. Especially in some factory buildings with specific requirements for indoor air circulation, reasonable and controllable ventilation valves are essential ventilation tools.

[0003] Existing airtight valves have gaps between blades and between blades and frame when closed, resulting in poor sealing. Furthermore, the opening and closing of the blades cannot be precisely controlled, and the opening angle cannot be controlled. Utility Model Content

[0004] The purpose of this invention is to provide a sealed air valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealed air valve, comprising a frame, a central partition plate fixedly disposed within the frame, a plurality of reinforcing ribs disposed between the central partition plate and the frame, a plurality of upper blades and lower blades disposed between the central partition plate and the frame, an upper rotating rod disposed inside the upper blades, the two ends of the upper rotating rod rotatably connecting the frame and the central partition plate, an upper power arm fixedly disposed at one end of the upper rotating rod located in the frame, the end of the upper power arm away from the upper rotating rod rotatably connecting to an upper transmission rod, a lower rotating rod disposed inside the lower blades, the two ends of the lower rotating rod rotatably connecting to the frame and the central partition plate, a lower power arm fixedly disposed at one end of the lower rotating rod located in the frame, the end of the lower power arm away from the lower rotating rod rotatably connecting to a lower transmission rod, a plurality of connecting rods disposed on the upper and lower transmission rods, and a drive shaft fixedly disposed on one of the lower power arms.

[0006] Preferably, when the upper and lower blades are in a sealed state, a sealing rubber strip is provided on the side of the blades that are close to each other.

[0007] Preferably, sealing gaskets are provided on the inner wall of the frame and on the middle partition.

[0008] Preferably, the drive shaft is a hexagonal rotating shaft.

[0009] Preferably, the upper and lower blades are airfoil-shaped structures, and the movement of the upper and lower blades is split-type.

[0010] Compared with the prior art, the beneficial effects of this utility model are: by sealing the gap between the blades when the blades are closed and the gap between the blades and the frame and the middle partition through the sealing rubber strip and sealing gasket, the airtightness is improved; secondly, the provided drive shaft, together with the transmission arm and the rotating rod, can precisely control the opening and closing angle of the blades according to the number of rotations of the drive shaft, so as to achieve precise control. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a side view of the present invention.

[0013] In the diagram: 1. Frame; 2. Middle partition; 3. Reinforcing rib; 4. Upper blade; 5. Lower blade; 6. Upper rotating rod; 7. Upper power arm; 8. Upper transmission rod; 9. Lower rotating rod; 10. Lower power arm; 11. Lower transmission rod; 12. Connecting rod; 13. Drive shaft. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0015] Please refer to 1-2. One embodiment of this utility model is provided: a sealed air valve, including a frame 1, a middle partition 2 fixedly disposed inside the frame 1, a plurality of reinforcing ribs 3 disposed between the middle partition 2 and the frame 1, a plurality of upper blades 4 and lower blades 5 disposed between the middle partition 2 and the frame 1, an upper rotating rod 6 disposed inside the upper blade 4, the two ends of the upper rotating rod 6 rotatably connecting the frame 1 and the middle partition 2, an upper power arm 7 fixedly disposed at one end of the upper rotating rod 6 located in the frame 1, an upper transmission rod 8 rotatably connected at the end of the upper rotating rod 7 away from the upper rotating rod 6, a lower rotating rod 9 disposed inside the lower blade 5, the two ends of the lower rotating rod 9 rotatably connecting the frame 1 and the middle partition 2, a lower power arm 10 fixedly disposed at one end of the lower rotating rod 9 located in the frame 1, a lower transmission rod 11 rotatably connected at the end of the lower power arm 10 away from the lower rotating rod 9, a plurality of connecting rods 12 disposed on the upper transmission rod 8 and the lower transmission rod 11, a drive shaft 13 fixedly disposed on one of the lower power arms 10, rotating the drive shaft 13, driving one of the lower blades 5 to rotate, as one of the lower blades 5 rotates.

[0016] In a sealed state, the upper blade 4 and the lower blade 5 have sealing rubber strips on their adjacent sides to seal the gap between them. Sealing gaskets are also provided on the inner wall of the frame 1 and the middle partition 2 to seal the gap between the frame 1, the middle partition 2, and the blades in a sealed state. The drive shaft 13 is a hexagonal rotating shaft, facilitating connection to the transmission mechanism, ensuring stable transmission, and aiding in counting rotations. The upper blade 4 and the lower blade 5 have an airfoil structure, which is strong, aerodynamically sound, and has low wind resistance. The upper blade 4 and the lower blade 5 move in a split-opening manner, maximizing ventilation space.

[0017] Working principle: When in use, rotating the drive shaft 13 drives the lower transmission arm 10, which in turn drives the lower transmission rod 11 to move upward, thereby causing the other lower blades 5 to rotate and close. As the lower transmission rod 11 moves upward, it drives the upper transmission rod 8 to move downward through several connecting rods 12, thereby closing the upper blades 4. When it is necessary to open, rotating the drive shaft 13 in the opposite direction enables the opening and closing operation.

Claims

1. A sealed air valve, comprising a frame (1), characterized in that: A central partition (2) is fixedly provided inside the frame (1). Several reinforcing ribs (3) are provided between the central partition (2) and the frame (1). Several upper blades (4) and lower blades (5) are provided between the central partition (2) and the frame (1). An upper rotating rod (6) is provided inside the upper blade (4). The two ends of the upper rotating rod (6) are rotatably connected to the frame (1) and the central partition (2). An uploading power arm (7) is fixedly provided at one end of the upper rotating rod (6) on the frame (1). The end of the uploading power arm (7) away from the upper rotating rod (6) rotates. The upper transmission rod (8) is connected, and the lower blade (5) is provided with a lower rotating rod (9). The two ends of the lower rotating rod (9) are rotatably connected to the frame (1) and the middle partition (2). The lower rotating rod (9) is fixedly provided with a lower power arm (10) at one end of the frame (1). The lower power arm (10) is rotatably connected to the lower transmission rod (11) at the end away from the lower rotating rod (9). The upper transmission rod (8) and the lower transmission rod (11) are provided with a number of connecting rods (12). One of the lower power arms (10) is fixedly provided with a drive shaft (13).

2. The airtight valve according to claim 1, characterized in that: When the upper blade (4) and the lower blade (5) are in a sealed state, a sealing rubber strip is provided on the side that is close to each other.

3. A sealed air valve according to claim 1, characterized in that: Sealing gaskets are provided on the inner wall of the frame (1) and on the middle partition (2).

4. A sealed air valve according to claim 1, characterized in that: The drive shaft (13) is a hexagonal rotating shaft.

5. A sealed air valve according to claim 1, characterized in that: The upper blade (4) and lower blade (5) are airfoil-shaped structures, and the motion of the upper blade (4) and lower blade (5) is split-type.

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