CN215172330U

CN215172330U - Adjusting air valve of ventilating duct

Info

Publication number: CN215172330U
Application number: CN202120995751.7U
Authority: CN
Inventors: 周明辉
Original assignee: Ningbo Easter Ventilation Engineering Co ltd
Current assignee: Ningbo Easter Ventilation Engineering Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-12-14
Anticipated expiration: 2031-05-11

Abstract

The utility model discloses an air conduit adjusting air valve, which comprises an air valve outer frame, wherein mounting plates are symmetrically arranged on the outer sides of the front surface and the back surface of the air valve outer frame, mounting holes are formed in the mounting plates, and an air valve sealing assembly is arranged in an inner cavity of the air valve outer frame; this air pipe adjusts blast gate, rotating vane through setting up, the seal groove, the side pole, the rubber seal piece, first compression spring, the leakproofness when the device is closed can be increased in the mutually supporting of compression groove, make rotating vane and blast gate frame inner chamber's lateral wall be the flexonics, the loss of the amount of wind has been reduced, this air pipe adjusts blast gate, axis of rotation through setting up, T shape handle, the rectangle inserted bar, the fixed column, the fixed slot, the rectangle lift groove, second compression spring's mutually supporting can conveniently rotate and fix blast gate seal assembly, thereby be convenient for adjust rotating vane's the angle that opens and shuts, manual control, easy operation, and is with low costs, the maintenance of being convenient for.

Description

Adjusting air valve of ventilating duct

Technical Field

The utility model relates to an air pipe adjusts blast gate technical field, specifically is an air pipe adjusts blast gate.

Background

The air quantity of an air supply pipeline is realized by adjusting the opening of an air valve, the air valve is widely applied to the industries of air conditioners, experimental equipment, fresh air systems, air furnaces and the like, and is a device for adjusting the flow of a gas medium or cutting off the gas medium.

In chinese utility model patent application no: CN201920708519.3 discloses an air valve device, the device include air valve pipeline, wind-break piece and executor, the wind-break piece both ends are rotated with the air valve pipeline and are connected, are provided with the installation drain pan on the outer wall of air valve pipeline, be provided with a shaft hole on the installation drain pan, shaft hole intercommunication installation drain pan with the inner wall of air valve pipeline, the executor is installed on the installation drain pan, just installation drain pan and air valve pipeline integrated into one piece, the utility model discloses can reduce the time of air valve and executor installation, simple structure, installation are firm, have improved work efficiency. The device leakproofness is relatively poor, and the rotary mode cost that adopts the executor simultaneously is higher, the maintenance of being not convenient for.

Therefore, it is necessary to provide a ventilation duct adjusting air valve to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air pipe adjusts blast gate to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an air valve for adjusting an air duct comprises an air valve outer frame, wherein mounting plates are symmetrically arranged on the front side and the back side of the air valve outer frame, mounting holes are formed in the mounting plates, an air valve sealing assembly is arranged in an inner cavity of the air valve outer frame, a rotating blade is movably mounted at the middle position of the air valve sealing assembly, a side rod is movably mounted on the rotating blade, a rubber sealing block is fixedly mounted at one end of the side rod, a sealing groove is formed in one side of the inner cavity of the air valve outer frame, an adjusting and fixing assembly is arranged in the middle of the top of the air valve outer frame, a T-shaped handle is arranged at the top end of the adjusting and fixing assembly, a rectangular insertion rod is movably mounted at the bottom of the T-shaped handle, a rotating shaft is movably connected at one end of the rectangular insertion rod, a rectangular lifting groove is formed in the rotating shaft, and a second compression spring is movably mounted in the rectangular lifting groove, the fixed slot has been seted up in the outside of axis of rotation, the equal fixed mounting in bottom side both ends of T shape handle has the fixed column.

By adopting the technical scheme, the T-shaped handle is pulled upwards, the lower ends of the two fixed columns are respectively separated from the inner cavities of the two fixed grooves under the driving of the T-shaped handle, then the T-shaped handle is rotated, the T-shaped handle can drive the rotating shaft to rotate under the action of the rectangular inserted link and the rectangular lifting groove, the rotating shaft drives the rotating blades to rotate, the T-shaped handle is loosened when the rotating shaft rotates to a proper position, the two fixing columns can automatically move downwards under the action of the reverse action force of the second compression spring until the lower ends of the two fixing columns are respectively inserted into the inner cavities of the two opposite fixing grooves, the rotary blade, the sealing groove, the side rod, the rubber sealing block, the first compression spring and the compression groove are matched with each other, so that the sealing performance of the device when the device is closed can be improved, the rotary blade is in flexible contact with the side wall of the inner cavity of the outer frame of the air valve, and the loss of air volume is reduced; when the rotating blade is closed, the two rubber sealing blocks are clamped into the inner cavities of the two sealing grooves, the rubber sealing blocks drive the side rods to extrude the first compression springs, the first compression springs contract to deform and further generate reverse acting force, and the effect of increasing the sealing performance is achieved under the action of the reverse acting force.

Preferably, the compression groove has been seted up to rotating vane's inside, movable mounting has first compression spring between limit pole and the rotating vane, first compression spring is provided with two sets ofly altogether, and two sets of first compression springs are installed respectively at the right side top and the right side bottom of limit pole.

Through adopting above-mentioned technical scheme, when the blast gate is for the closed condition, the limit pole outwards expands under first compression spring's elasticity effect to it is inseparabler to make rubber seal block and seal groove block, therefore makes the airtight effect of blast gate better.

Preferably, the axis of rotation vertically sets up in rotating vane's inside centre, and the lower extreme of axis of rotation extends to rotating vane's bottom below and the bottom wall body of blast gate frame inner chamber and passes through sealed bearing and rotate and be connected, the upper end of axis of rotation runs through blast gate frame top and extends to the top of blast gate frame to the department of running through is provided with sealed bearing.

Through adopting above-mentioned technical scheme for rotating vane can rotate under the drive of axis of rotation, thereby the size in control wind channel, two sets of sealed bearings can effectively reduce the friction, and it is more convenient to make the regulation rotate, has guaranteed the seal of tuber pipe simultaneously.

Preferably, the rectangular insertion rod is connected with the rectangular lifting groove in a clamping mode, and the size of the rectangular insertion rod is matched with the size of the inner cavity of the rectangular lifting groove.

Through adopting above-mentioned technical scheme, the rectangle inserted bar can be controlled to the T shape handle and rotates, when the rectangle inserted bar rotates, can drive the axis of rotation and rotate.

Preferably, the rotating blade is rotatably connected with the air valve outer frame, and the fixing column is connected with the fixing groove in a clamping mode.

Through adopting above-mentioned technical scheme, rotate through rotating vane, can control the draught area in the tuber pipe, after the regulation, through advancing the fixed column card into the fixed slot, can lock rotating vane, avoid rotating vane to rotate.

Preferably, the second compression springs are arranged in two groups, the two groups of second compression springs are uniformly installed in the rectangular lifting groove, the top ends of the second compression springs are fixedly connected with the rectangular insertion rod, and the bottom ends of the second compression springs are fixedly installed at the bottom of the rectangular lifting groove.

Through adopting above-mentioned technical scheme, under second compression spring's elasticity effect, the rectangle inserted bar receives decurrent elasticity to make T shape handle atress downwards, thereby make the fixed column card of installing on T shape handle advance the fixed slot.

Preferably, the fixed slot is provided with a plurality of groups, and a plurality of groups of fixed slots are evenly arranged on the outer side of the rotating shaft in a surrounding mode.

Through adopting above-mentioned technical scheme, a plurality of groups fixed slots are used for holding the fixed column for the blast gate can realize fixing after accomplishing to adjust.

Preferably, the side bars and the compression grooves are provided with two groups, the two groups of compression grooves are respectively arranged on the left side and the right side of the inner part of the rotating blade, and the two groups of side bars are respectively arranged in the two groups of rotating blades.

Through adopting above-mentioned technical scheme, the limit pole is at the inside activity of compression groove under first compression spring's elasticity effect, and when the blast gate was normal open mode, first compression spring was normal state of stretching, and when the blast gate was closed mode, first compression spring received the compression to it is inseparabler to make the blast gate closure.

Preferably, the seal groove and the rubber seal block are provided with two sets, the two sets of rubber seal blocks are respectively arranged at the outer sides of the two sets of side rods, and the two sets of seal grooves are respectively arranged at the two sides of the inner cavity of the outer frame of the air valve.

Through adopting above-mentioned technical scheme, mutually support through seal groove and rubber seal piece and make the gas tightness of blast gate better, the result of use is better.

Preferably, the sealing groove and the rubber sealing block are both arc-shaped structures, and the rubber sealing block is connected with the sealing groove in a clamping manner.

Through adopting above-mentioned technical scheme, be favorable to reducing the friction, the blast gate of being convenient for is adjusted for the sealed piece block of rubber, open more laborsavingly, it is more convenient to use.

Compared with the prior art, the beneficial effects of the utility model are that:

1. according to the air duct adjusting air valve, the sealing performance of the device when the device is closed can be improved through the mutual matching of the rotating blades, the sealing grooves, the side rods, the rubber sealing blocks, the first compression springs and the compression grooves, so that the rotating blades are in flexible contact with the side wall of the inner cavity of the outer frame of the air valve, and the loss of air volume is reduced;

2. this air pipe adjusts blast gate through the axis of rotation that sets up, T shape handle, rectangle inserted bar, fixed column, fixed slot, rectangle lift groove, second compression spring mutually support can conveniently rotate blast gate seal assembly and fix to be convenient for adjust rotating vane's the angle that opens and shuts, manual control, easy operation, it is with low costs, the maintenance of being convenient for.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a schematic sectional view of the junction between the side bar and the rotary blade of the present invention;

FIG. 3 is a schematic cross-sectional view of the connection between the rectangular insertion rod and the rotation shaft of the present invention;

in the figure: 1. a damper seal assembly; 2. adjusting the fixing component; 3. a rotating shaft; 4. a T-shaped handle; 5. a rectangular insertion rod; 6. fixing a column; 7. fixing grooves; 8. an air valve outer frame; 9. mounting a plate; 10. mounting holes; 11. a side bar; 12. a sealing groove; 13. a rotating blade; 14. a compression groove; 15. a first compression spring; 16. a rubber sealing block; 17. a rectangular lifting groove; 18. a second compression spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a ventilation duct adjusting air valve, which comprises: an air duct adjusting air valve comprises an air valve outer frame 8, wherein mounting plates 9 are symmetrically arranged on the outer sides of the front surface and the back surface of the air valve outer frame 8, mounting holes 10 are formed in the mounting plates 9, an air valve sealing assembly 1 is arranged in an inner cavity of the air valve outer frame 8, a rotating blade 13 is movably mounted in the middle position of the air valve sealing assembly 1, a side rod 11 is movably mounted on the rotating blade 13, a rubber sealing block 16 is fixedly mounted at one end of the side rod 11, a sealing groove 12 is formed in one side of the inner cavity of the air valve outer frame 8, an adjusting and fixing assembly 2 is arranged in the center of the top of the air valve outer frame 8, a T-shaped handle 4 is arranged at the top end of the adjusting and fixing assembly 2, a rectangular inserting rod 5 is movably mounted at the bottom of the T-shaped handle 4, a rotating shaft 3 is movably connected at one end of the rectangular inserting rod 5, a rectangular lifting groove 17 is formed in the rotating shaft 3, a second compression spring 18 is movably mounted in the rectangular lifting groove 17, fixed slot 7 has been seted up in the outside of axis of rotation 3, and the equal fixed mounting in bottom side both ends of T shape handle 4 has fixed column 6.

By adopting the technical scheme, the T-shaped handle 4 is pulled upwards, the lower ends of the two fixed columns 6 are respectively separated from the inner cavities of the two fixed grooves 7 under the driving of the T-shaped handle 4, then the T-shaped handle 4 is rotated, the T-shaped handle 4 drives the rotating shaft 3 to rotate under the action of the rectangular inserted link 5 and the rectangular lifting groove 17, then the rotating shaft 3 drives the rotating blades 13 to rotate, when the T-shaped handle 4 is loosened to a proper position, the two fixed columns 6 can automatically move downwards under the action of the reverse action force of the second compression spring 18 until the lower ends of the two fixed columns 6 are respectively inserted into the inner cavities of the two opposite fixed grooves 7, the sealing performance of the device can be improved by the mutual matching of the rotating blades 13, the sealing groove 12, the side rod 11, the rubber sealing block 16, the first compression spring 15 and the compression groove 14, so that the rotating blades 13 are in flexible contact with the side wall of the inner cavity of the air valve outer frame 8, the loss of air volume is reduced; when the rotating blade 13 is closed, the two rubber sealing blocks 16 are clamped into the inner cavities of the two sealing grooves 12, at the moment, the rubber sealing blocks 16 drive the side rods 11 to extrude the first compression springs 15, the first compression springs 15 contract to generate deformation and further generate reverse acting force, and the effect of increasing the sealing performance is achieved under the action of the reverse acting force.

Specifically, as shown in fig. 2, a compression groove 14 is formed in the rotating blade 13, a first compression spring 15 is movably mounted between the side rod 11 and the rotating blade 13, two sets of the first compression springs 15 are arranged, and the two sets of the first compression springs 15 are respectively mounted at the top end and the bottom end of the right side of the side rod 11.

Through adopting above-mentioned technical scheme, when the blast gate is the closed condition, outside expansion under the spring action of first compression spring 15 is followed to limit pole 11 to it is inseparabler to make rubber seal block 16 and seal groove 12 block, therefore makes the airtight effect of blast gate better.

Specifically, as shown in fig. 1, the rotating shaft 3 is longitudinally arranged in the center of the inside of the rotating blade 13, the lower end of the rotating shaft 3 extends to the bottom lower part of the rotating blade 13 and is rotatably connected with the bottom wall body of the inner cavity of the air valve outer frame 8 through a sealing bearing, the upper end of the rotating shaft 3 penetrates through the top of the air valve outer frame 8 and extends to the top of the air valve outer frame 8, and the penetrating part is provided with the sealing bearing.

Through adopting above-mentioned technical scheme for rotating vane 13 can rotate under the drive of axis of rotation 3, thereby the size in control wind channel, and two sets of sealed bearing can effectively reduce the friction, make the regulation rotate more conveniently, have guaranteed the seal of tuber pipe simultaneously.

Specifically, as shown in fig. 3, the rectangular insertion rod 5 is connected with the rectangular lifting groove 17 in a clamping manner, and the size of the rectangular insertion rod 5 is matched with the size of the inner cavity of the rectangular lifting groove 17.

Through adopting above-mentioned technical scheme, T shape handle 4 can control rectangle inserted bar 5 and rotate, when rectangle inserted bar 5 rotated, can drive axis of rotation 3 and rotate.

Specifically, as shown in fig. 1, the rotary blade 13 is rotatably connected to the damper outer frame 8, and the fixed column 6 is engaged with the fixed groove 7.

Through adopting above-mentioned technical scheme, rotate through rotating vane 13, can control the draught area in the tuber pipe, after the regulation, through with fixed column 6 card advance fixed slot 7, can lock rotating vane 13, avoid rotating vane 13 to rotate.

Specifically, as shown in fig. 3, two sets of second compression springs 18 are provided, the two sets of second compression springs 18 are uniformly installed inside the rectangular lifting groove 17, the top end of the second compression spring 18 is fixedly connected with the rectangular insertion rod 5, and the bottom end of the second compression spring 18 is fixedly installed at the bottom of the rectangular lifting groove 17.

By adopting the technical scheme, under the elastic force action of the second compression spring 18, the rectangular insertion rod 5 is subjected to downward elastic force, so that the T-shaped handle 4 is subjected to downward force, and the fixed column 6 arranged on the T-shaped handle 4 is clamped into the fixed groove 7.

Specifically, as shown in fig. 1, the fixing grooves 7 are provided in a plurality of groups, and the plurality of groups of fixing grooves 7 are uniformly formed around the outer side of the rotating shaft 3.

Through adopting above-mentioned technical scheme, a plurality of groups fixed slot 7 are used for holding fixed column 6 for the blast gate can realize fixedly after accomplishing to adjust.

Specifically, as shown in fig. 2, two sets of side rods 11 and two sets of compression grooves 14 are provided, the two sets of compression grooves 14 are respectively opened at the left and right sides inside the rotary blade 13, and the two sets of side rods 11 are respectively installed inside the two sets of rotary blade 13.

Through adopting above-mentioned technical scheme, limit pole 11 is at compression groove 14 inside activity under first compression spring's 15 elasticity effect, and when the blast gate was normal open mode, first compression spring 15 was normal extension state, and when the blast gate was closed mode, first compression spring 15 received the compression to it is inseparabler to make the blast gate closure.

Specifically, as shown in fig. 1 and 2, two groups of sealing grooves 12 and rubber sealing blocks 16 are provided, the two groups of rubber sealing blocks 16 are respectively provided at the outer sides of the two groups of side rods 11, and the two groups of sealing grooves 12 are respectively provided at two sides of the inner cavity of the outer frame 8 of the blast gate.

Through adopting above-mentioned technical scheme, mutually support through seal groove 12 and rubber seal block 16 and make the gas tightness of blast gate better, the result of use is better.

Specifically, as shown in fig. 1 and 2, the sealing groove 12 and the rubber sealing block 16 are both arc-shaped, and the rubber sealing block 16 is engaged with the sealing groove 12.

Through adopting above-mentioned technical scheme, be favorable to reducing the friction, the blast gate of being convenient for is adjusted for 16 blocks of rubber seal block, open more laborsavingly, it is more convenient to use.

The working principle is as follows: the T-shaped handle 4 is pulled upwards, the lower ends of the two fixed columns 6 are respectively separated from the inner cavities of the two fixed grooves 7 under the driving of the T-shaped handle 4, then the T-shaped handle 4 is rotated, the T-shaped handle 4 drives the rotating shaft 3 to rotate under the action of the rectangular inserted link 5 and the rectangular lifting groove 17, then the rotating shaft 3 drives the rotating blades 13 to rotate, when the T-shaped handle 4 is loosened when the rotating shaft is rotated to a proper position, the two fixed columns 6 can automatically move downwards under the action of the reverse action force of the second compression spring 18 until the lower ends of the two fixed columns 6 are respectively inserted into the inner cavities of the two opposite fixed grooves 7, the sealing performance of the device when the device is closed can be increased through the mutual matching of the rotating blades 13, the sealing groove 12, the side rod 11, the rubber sealing block 16, the first compression spring 15 and the compression groove 14, so that the rotating blades 13 are in flexible contact with the side wall of the inner cavity of the air valve outer frame 8, the loss of air volume is reduced; when the rotating blade 13 is closed, the two rubber sealing blocks 16 are clamped into the inner cavities of the two sealing grooves 12, at the moment, the rubber sealing blocks 16 drive the side rods 11 to extrude the first compression springs 15, the first compression springs 15 contract to generate deformation and further generate reverse acting force, and the effect of increasing the sealing performance is achieved under the action of the reverse acting force.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a blast gate is adjusted to air pipe, includes blast gate frame (8), its characterized in that: the air valve comprises a wind valve outer frame (8), wherein a mounting plate (9) is symmetrically arranged on the front side and the back side of the wind valve outer frame (8), a mounting hole (10) is formed in the mounting plate (9), a wind valve sealing assembly (1) is arranged in an inner cavity of the wind valve outer frame (8), a rotating blade (13) is movably mounted at the middle position of the wind valve sealing assembly (1), a side rod (11) is movably mounted on the rotating blade (13), a rubber sealing block (16) is fixedly mounted at one end of the side rod (11), a sealing groove (12) is formed in one side of the inner cavity of the wind valve outer frame (8), an adjusting and fixing assembly (2) is arranged in the middle of the top of the wind valve outer frame (8), a T-shaped handle (4) is arranged at the top end of the adjusting and fixing assembly (2), a rectangular insertion rod (5) is movably mounted at the bottom of the T-shaped handle (4), and a rotating shaft (3) is movably connected to one end of the rectangular insertion rod (5), the novel T-shaped handle is characterized in that a rectangular lifting groove (17) is formed in the rotating shaft (3), a second compression spring (18) is movably mounted in the rectangular lifting groove (17), a fixing groove (7) is formed in the outer side of the rotating shaft (3), and fixing columns (6) are fixedly mounted at two ends of the bottom side of the T-shaped handle (4).

2. A ventilation duct regulating damper as claimed in claim 1, wherein: compression groove (14) have been seted up to rotating vane (13) inside, movable mounting has first compression spring (15) between limit pole (11) and rotating vane (13), first compression spring (15) are provided with two sets ofly altogether, and right side top and right side bottom at limit pole (11) are installed respectively in two sets of first compression spring (15).

3. A ventilation duct regulating damper as claimed in claim 1, wherein: the axis of rotation (3) vertically set up in the inside centre of rotating vane (13), and the lower extreme of axis of rotation (3) extends to the bottom below of rotating vane (13) and the bottom wall body of blast gate frame (8) inner chamber and passes through sealed bearing and rotate and be connected, the upper end of axis of rotation (3) runs through blast gate frame (8) top and extends to the top of blast gate frame (8) to the department of running through is provided with sealed bearing.

4. A ventilation duct regulating damper as claimed in claim 1, wherein: the rectangular insertion rod (5) is connected with the rectangular lifting groove (17) in a clamping mode, and the size of the rectangular insertion rod (5) is matched with the size of the inner cavity of the rectangular lifting groove (17) in a mutually matched mode.

5. A ventilation duct regulating damper as claimed in claim 1, wherein: the rotary blade (13) is rotatably connected with the air valve outer frame (8), and the fixing column (6) is connected with the fixing groove (7) in a clamping mode.

6. A ventilation duct regulating damper as claimed in claim 1, wherein: the two sets of second compression springs (18) are arranged, the two sets of second compression springs (18) are uniformly installed inside the rectangular lifting groove (17), the top ends of the second compression springs (18) are fixedly connected with the rectangular insertion rod (5), and the bottom ends of the second compression springs (18) are fixedly installed at the bottom of the rectangular lifting groove (17).

7. A ventilation duct regulating damper as claimed in claim 1, wherein: the fixed slot (7) is provided with a plurality of groups, and a plurality of groups of fixed slots (7) are evenly arranged on the outer side of the rotating shaft (3) in a surrounding mode.

8. A ventilation duct regulating damper as claimed in claim 1, wherein: the side rods (11) and the compression grooves (14) are respectively provided with two groups, the two groups of compression grooves (14) are respectively arranged on the left side and the right side of the inner part of the rotating blade (13), and the two groups of side rods (11) are respectively arranged in the two groups of rotating blades (13).

9. A ventilation duct regulating damper as claimed in claim 1, wherein: the sealing groove (12) and the rubber sealing blocks (16) are both provided with two groups, the two groups of rubber sealing blocks (16) are respectively arranged on the outer sides of the two groups of side rods (11), and the two groups of sealing grooves (12) are respectively arranged on two sides of the inner cavity of the air valve outer frame (8).

10. A ventilation duct regulating damper as claimed in claim 1, wherein: the sealing groove (12) and the rubber sealing block (16) are both arc-shaped structures, and the rubber sealing block (16) is clamped and connected with the sealing groove (12).