Sealing structure of ventilation valve

Abstract

A sealing structure of a ventilation valve comprises a frame body, a motor installed on the frame body, a blade, a pored sealing strip and a table sealing strip, a check ring is arranged on a rotating shaft of the blade, two grooves are formed in the inner side of the frame body, and clamping columns capable of being inserted into the grooves are correspondingly arranged on the two sides of the pored sealing strip and the two sides of the table sealing strip respectively. The pored sealing strip is provided with a plurality of holes, the clamping columns of the pored sealing strip are inserted into the grooves in the left side and the right side of the frame body, when the rotating shaft of the blade is inserted into the left side and the right side of the frame body, the check rings are located in the holes of the pored sealing strip, and the middle of the pored sealing strip seals gaps formed by the check rings between the blade end face and the left frame and between the blade end face and the right frame. The clamping columns of the sealing strips with the tables are inserted into the grooves in the two sides of the upper frame body and the lower frame body, and bosses capable of pressing the upper edge of the uppermost blade and the lower edge of the lowermost blade when the blades are closed are arranged in the middles of the sealing strips with the tables. According to the utility model, the problem of air leakage caused by a gap between the blade and the frame in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the field of building ventilation, in particular to a sealing structure of a ventilation valve. Background Art

[0002] At present, in the ventilation system, a valve that is both economical and practical is needed, and the shutter ventilation electric valve is one of them. Figure 1 The principle is to control the ventilation volume of the valve through the rotation of the blades. When the blades are parallel to the direction of the wind flow, the valve ventilation volume is the largest, and when the blades are perpendicular to the direction of the wind flow, the valve ventilation volume is the smallest.

[0003] Usually, a square valve is welded by four upper, lower, left and right frames, and the four inner surfaces form vents. A number of blades and connecting rods are then installed at the vents to form linked shutters. The rotating shafts of the blades are inserted into the shaft holes of the left and right frames. The size of the ventilation volume of the air valve and its closure are controlled by rotating the shutters. In order to prevent the blades from rubbing against the frames and causing jamming, a retaining ring must be provided at the blade rotating shaft to isolate the blade end faces from the inner surface of the frame. For the same reason, the edges of the top and bottom blades cannot cling to the inner surface of the frame when the valve is closed, thus forming a gap 12 (such as Figure 6 As shown in (a), the air valve leaks and is not closed tightly. Utility Model Content

[0004] In view of this, the utility model provides a sealing structure for a ventilation valve to solve the air leakage problem caused by the gap between the blade and the frame in the prior art.

[0005] A sealing structure for a ventilation valve, comprising a frame body, a motor installed on the frame body, a valve body vent composed of the frame body is provided with a plurality of blades, one blade is driven to flip by the motor, and the other blades are synchronously driven to flip together through a connecting rod to realize closing and opening of the valve, and a retaining ring is provided on the rotating shaft of the blade; it is characterized in that: it also includes a perforated sealing strip and a platform sealing strip, the inner side of the frame body is provided with two grooves, the perforated sealing strip and the platform sealing strip are respectively provided with a card column that can be inserted into the groove, the perforated sealing strip is provided with a plurality of holes, the card column of the perforated sealing strip is inserted into the grooves on the left and right sides of the frame body, when the rotating shaft of the blade is inserted into the left and right sides of the frame body, the retaining ring is located in the hole of the perforated sealing strip, the middle part of the perforated sealing strip seals the gap between the blade end face formed by the retaining ring and the left and right frames, the card column of the platform sealing strip is inserted into the grooves on both sides of the upper and lower frame bodies, and the middle part of the platform sealing strip is provided with a boss that can press the upper edge of the uppermost blade and the lower edge of the lowermost blade when the blade is closed.

[0006] Furthermore, the frame body includes an upper frame, a lower frame, and a left frame and a right frame that are symmetrically arranged. The inner surfaces of the upper frame, the lower frame, the left frame, and the right frame are respectively provided with two grooves.

[0007] Furthermore, the perforated sealing strip includes a first strip and clamping columns arranged on both sides of the first strip. The clamping columns of the perforated sealing strip are inserted into the grooves of the left frame and the right frame. The first strip of the sealing strip seals the gap between the blade end face formed by the retaining ring and the left frame and the right frame.

[0008] Furthermore, the sealing strip with a platform includes a second slat, clamping columns arranged on both sides of the second slat, and a boss arranged in the middle of the second slat. During installation, the clamping columns of the sealing strip with a platform are inserted into the grooves of the upper frame and the lower frame, and the gaps between the upper edge of the uppermost blade and the lower edge of the lowermost blade and the upper frame and the lower frame are blocked by the boss.

[0009] Furthermore, the perforated sealing strip and the platform sealing strip are made of foam rubber, and the hardness is controlled between 40-50.

[0010] Furthermore, the diameter of the hole is equal to that of the retaining ring.

[0011] The utility model has sealing strips embedded in the grooves of the four frames respectively, and the clamping columns of the perforated sealing strips are inserted into the grooves on the left and right sides of the frame body. The middle plate of the perforated sealing strips blocks the gap outside the retaining ring, thereby solving the problem of air leakage in the prior art due to the gap in the setting of the retaining ring. The platform sealing strips are inserted into the grooves on the upper and lower sides of the frame body, and the gaps between the upper edge of the uppermost blade and the lower edge of the lowermost blade and the upper frame and the lower frame can be blocked by the bosses, thereby achieving the effect of preventing air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of a ventilation valve in the prior art;

[0013] Figure 2 (a) is a top view of the sealing structure of the ventilation valve of the present invention, and (b) is a side view of the sealing structure of the ventilation valve of the present invention;

[0014] Figure 3 It is a structural diagram of the frame of the utility model;

[0015] Figure 4 This is a schematic structural diagram of a perforated sealing strip according to the present invention;

[0016] Figure 5 This is a structural diagram of a sealing strip with a platform in the utility model;

[0017] Figure 6(a) is a schematic diagram of the structure of the prior art in which there is no sealing strip on the left and right sides and there is a gap, and (b) is a schematic diagram of the structure of the utility model in which a sealing strip with holes and a sealing strip with a platform are inserted to achieve sealing.

[0018] In the figure: 1—upper frame, 2—lower frame, 3—left frame, 4—right frame, 5—motor, 6—blades, 7—retaining ring, 8—sealing strip with holes, 9—sealing strip with platforms, 10—sealing point, 11—groove, 12—gap, 13—rotating shaft, 81—first slat, 82—clamping column, 83—hole, 91—second slat, 92—clamping column, 93—boss. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are 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 shall fall within the scope of protection of the present invention.

[0020] See also Figure 2-5 The embodiment of the present invention provides a sealing structure for a ventilation valve, including a frame body, a motor 5 installed on the frame body, a blade 6, a perforated sealing strip 8 and a platform sealing strip 9. The valve body vent composed of the frame body is provided with a plurality of blades 6. The blade 6 is driven by the motor 5 and a blade is flipped through a connecting rod to realize the sealing and opening of the vent. The rotating shaft 13 of the blade 6 is provided with a retaining ring 7 to isolate the two end faces of the blade 6 from the inner surface of the frame.

[0021] The frame body includes an upper frame 1, a lower frame 2, and a left frame 3 and a right frame 4, which are symmetrically arranged. Figure 3 As shown, the inner surfaces of the four frames (upper frame 1, lower frame 2, left frame 3, and right frame 4) are provided with grooves 11. In this embodiment, two grooves 11 are provided in parallel along the length direction of the frames.

[0022] The perforated sealing strip 8 is installed on the left frame 3 and the right frame 4, and the platform sealing strip 9 is installed on the upper frame 1 and the lower frame 2. The perforated sealing strip 8 and the platform sealing strip 9 are made of foam rubber such as EVA, and the hardness is controlled between 40-50.

[0023] like Figure 4As shown, the perforated sealing strip 8 includes a first strip 81, posts 82 disposed on either side of the first strip 81, and a plurality of holes 83 disposed in the center of the first strip 81. The holes 83 are arranged according to the diameter and wheelbase of the retaining ring of the rotating shaft 13 of the blade 6. In this embodiment, the holes 83 are equal to the diameter of the retaining ring 7. During installation, the posts 82 of the perforated sealing strip 8 are inserted into the grooves 11 of the left and right frames 3 and 4. When inserted, the holes 83 of the perforated sealing strip 8 are aligned with the rotating shaft holes of the left and right frames 3 and 4 and remain concentric therewith. When the shaft 13 of the blade 6 is inserted into the left frame 3 and the right frame 4, the retaining ring 7 on the shaft 13 sinks into the hole 83 of the perforated sealing strip 8. When the blade 6 is in the closed position, the first slat 81 of the perforated sealing strip 8 occupies the gap between the end face of the blade 6 and the frame, ensuring the left and right sides are sealed, that is, the first slat 81 seals the gap between the end face of the blade 6 and the left frame 3 and the right frame 4 formed by the retaining ring 7, thereby solving the problem of air leakage due to the gap in the prior art. Figure 2 As shown in (a).

[0024] like Figure 5 As shown, the said sealing strip with platform 9 comprises a second strip 91, posts 92 provided on both sides of the second strip 91 and a boss 93 provided in the middle of the second strip 91. When installing, the posts 92 of the sealing strip with platform 9 are inserted into the grooves 11 of the upper frame 1 and the lower frame 2, as shown in FIG. Figure 2 As shown in (b), the gaps between the upper edge of the uppermost blade and the lower edge of the lowermost blade and the upper frame 1 and the lower frame 2 can be blocked by the boss 93, thereby achieving the effect of preventing air leakage.

[0025] The utility model has sealing strips inlaid in the grooves 11 of the four frames, and the left and right sealing strips are close to the ends of the blade 6 to seal the ends of the blade 6. Similarly, when the blades are closed, the upper edge of the uppermost blade and the lower edge of the lowermost blade press the bosses 93 of the upper and lower sealing strips to ensure sealing.

[0026] When the ventilation valve is closed, the left and right frames and the inner surface of the upper and lower frames are compared before and after with and without sealing strips. Figure 6 As shown in (a) and (b);

[0027] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention are intended to be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A sealing structure for a ventilation valve, comprising a frame body, a motor mounted on the frame body, and a plurality of vanes disposed in the vent of the valve body formed by the frame body. One vane is driven to flip by the motor, synchronously driving the other vanes to flip together via a connecting rod to close and open the valve. A retaining ring is provided on the rotating shaft of the vane; the characteristics are: It also includes a perforated sealing strip and a platform sealing strip. Two grooves are provided on the inner side of the frame body. The perforated sealing strip and the platform sealing strip are respectively provided with a card column that can be inserted into the grooves. The perforated sealing strip is provided with a number of holes. The card column of the perforated sealing strip is inserted into the grooves on the left and right sides of the frame body. When the rotating shaft of the blade is inserted into the left and right sides of the frame body, the retaining ring is located in the hole of the perforated sealing strip. The middle part of the perforated sealing strip seals the gap between the end face of the blade and the left and right frames formed by the retaining ring. The card column of the platform sealing strip is inserted into the grooves on both sides of the upper and lower frame bodies. The middle part of the platform sealing strip is provided with a boss that can press the upper edge of the uppermost blade and the lower edge of the lowermost blade when the blade is closed.

2. The sealing structure of the ventilation valve according to claim 1, characterized in that: The frame body comprises an upper frame, a lower frame, and a left frame and a right frame that are symmetrically arranged. The inner surfaces of the upper frame, the lower frame, the left frame and the right frame are respectively provided with two grooves.

3. The sealing structure of the ventilation valve according to claim 2, characterized in that: The perforated sealing strip includes a first strip and clamping columns arranged on both sides of the first strip. The clamping columns of the perforated sealing strip are inserted into the grooves of the left frame and the right frame. The first strip of the sealing strip seals the gap between the blade end face formed by the retaining ring and the left frame and the right frame.

4. The sealing structure of the ventilation valve according to claim 2, characterized in that: The sealing strip with a platform includes a second strip, clamping columns arranged on both sides of the second strip, and a boss arranged in the middle of the second strip. During installation, the clamping columns of the sealing strip with a platform are inserted into the grooves of the upper frame and the lower frame, and the gaps between the upper edge of the uppermost blade and the upper frame, and the gaps between the lower edge of the lowermost blade and the lower frame are blocked by the bosses.

5. The sealing structure of the ventilation valve according to claim 1, characterized in that: The perforated sealing strip and the platform sealing strip are made of foam rubber, and the hardness is controlled between 40-50.

6. The sealing structure of the ventilation valve according to claim 1, characterized in that: The diameter of the hole is equal to that of the retaining ring.

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