Anti-leakage sealing structure of circular air valve

Abstract

The utility model discloses an external leakage prevention sealing structure of a circular air valve, which comprises a valve body, a valve plate is arranged in the valve body, a rotating shaft is arranged in the middle of the valve plate, one end of the rotating shaft is rotatably connected with the inner wall of the valve body, and the other end of the rotating shaft penetrates through the valve body and is provided with a handle. The two semi-ring moving blocks are located on the lower left side and the upper right side of the valve plate correspondingly, the semi-ring moving blocks make contact with the valve plate, and semi-ring connecting blocks are installed at the ends, away from the valve plate, of the semi-ring moving blocks. The semi-ring moving block moves and extrudes the air bag, the air bag is extruded and deformed to block the gap, the sealing and leakage preventing effects are achieved, meanwhile, the pushing ring extrudes the sealing ring, the sealing ring is extruded and deformed to make close contact with the rotating shaft, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of air valves, in particular to an anti-external leakage sealing structure of a circular air valve. Background Art

[0002] A circular air valve is a device used in a ventilation system, which is mainly used to control and adjust the ventilation volume, and to block the airflow when not in use, so as to achieve the effects of sealing, shading and heat preservation. It consists of a single circular door plate or two semicircular door plates, which are opened and closed by rotating around a rotating shaft. The working principle of a circular air valve is to change the air velocity and flow rate in the air duct by controlling the valve plate to flip or move, thereby achieving the effect of controlling the air flow direction and distributing the air flow rate. In the prior art, there is no sealing structure to seal the air valve, and the sealing performance cannot be well improved. Secondly, when the sealing ring of the valve shaft is worn out due to long-term use, a gap will be generated between the valve shaft and the valve shaft, affecting the sealing effect. Therefore, those skilled in the art provide a circular air valve anti-leakage sealing structure to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a sealing structure for preventing external leakage of a circular air valve, comprising a valve body, a valve plate is arranged inside the valve body, a rotating shaft is installed in the middle of the valve plate, one end of the rotating shaft is rotatably connected to the inner wall of the valve body, and the other end of the rotating shaft passes through the valve body and is installed with a handle;

[0004] Two semi-ring moving blocks are arranged inside the valve body, and the two semi-ring moving blocks are respectively located at the lower left side and the upper right side of the valve plate, and the semi-ring moving blocks contact the valve plate, and a semi-ring connecting block is installed at one end of the semi-ring moving block away from the valve plate;

[0005] A plurality of grooves are provided on the outer side of the semi-ring connecting block, and fixed rods are symmetrically installed inside the grooves. The inner part of the grooves is slidably connected to the limit block, and the limit block is sleeved on the outer surface of the fixed rod. The outer surface of the fixed rod is sleeved with a second spring, and the second spring is located on the side of the limit block close to the semi-ring moving block;

[0006] The outer side of the semi-ring connecting block is slidably connected to the semi-ring fixing block, the outer side of the semi-ring fixing block is fixedly connected to the inner wall of the valve body, the inner side of the semi-ring fixing block is fixedly connected to the limit block, and an air bag is installed between the semi-ring moving block and the semi-ring fixing block;

[0007] A circular cavity is provided inside the valve body, and the rotating shaft passes through the circular cavity. A partition plate is installed in the middle of the circular cavity, and push rings are arranged on both sides of the partition plate. A plurality of springs three are installed at one end of the push ring, and the springs three are fixedly connected to the partition plate. A sealing ring is installed at the other end of the push ring.

[0008] Preferably: a round block is installed at one end of the handle.

[0009] Preferably, the circular block is internally slidably connected to a positioning block, and a pull ring is installed at one end of the positioning block.

[0010] Preferably, the inner wall of the circular block is symmetrically provided with sliding grooves, the interior of the sliding grooves is slidably connected to a sliding block, and the sliding block is fixedly connected to the positioning block.

[0011] Preferably: a spring is installed at one end of the slider away from the valve body.

[0012] Preferably, two circular groove blocks are installed on the outer side of the valve body, and the two circular groove blocks are 90 degrees apart.

[0013] Technical effects and advantages of the utility model:

[0014] The utility model moves and squeezes the airbag by means of a semi-ring moving block, so that the airbag is squeezed and deformed to block the gap, thereby achieving the effect of sealing and preventing leakage. At the same time, the sealing ring is squeezed and deformed by a pushing ring, so that the sealing ring is squeezed and deformed to closely contact the rotating shaft, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of this application;

[0016] Figure 2 It is a schematic diagram of the structure of the fixed block of this application;

[0017] Figure 3 It is a structural schematic diagram of the valve body of the present application;

[0018] Figure 4 It is a schematic diagram of the structure of the airbag of the present application;

[0019] Figure 5 It is a structural schematic diagram of a semi-ring connection block of the present application;

[0020] Figure 6 It is a schematic diagram of the structure of the circular cavity of the present application;

[0021] In the figure: 1. valve body; 2. valve plate; 3. rotating shaft; 4. handle; 5. round block; 6. slide groove; 7. slider; 8. spring one; 9. positioning block; 10. pull ring; 11. circular groove block; 12. semi-ring moving block; 13. semi-ring connecting block; 14. groove; 15. fixing rod; 16. limiting block; 17. spring two; 18. semi-ring fixing block; 19. airbag; 20. circular cavity; 21. partition plate; 22. push ring; 23. spring three; 24. sealing ring. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0023] See also Figures 1 to 6 In the present embodiment, a sealing structure for preventing external leakage of a circular air valve is provided, comprising a valve body 1, a valve plate 2 is arranged inside the valve body 1, a rotating shaft 3 is installed in the middle of the valve plate 2, one end of the rotating shaft 3 is rotatably connected to the inner wall of the valve body 1, the other end of the rotating shaft 3 passes through the valve body 1 and is installed with a handle 4, a round block 5 is installed at one end of the handle 4, the round block 5 is slidably connected to a positioning block 9 inside, a pull ring 10 is installed at one end of the positioning block 9, a sliding groove 6 is symmetrically provided on the inner wall of the round block 5, a sliding block 7 is slidably connected inside the sliding groove 6, and the sliding block 7 is fixedly connected to the positioning block 9, a spring 8 is installed at one end of the sliding block 7 away from the valve body 1, two circular groove blocks 11 are installed on the outer side of the valve body 1, and the two circular groove blocks 11 are 90 degrees apart, two semi-ring moving blocks 12 are arranged inside the valve body 1, and the two semi-ring moving blocks 12 are respectively located on the lower left side and the upper right side of the valve plate 2, and the semi-ring moving block 12 contacts the valve plate 2, and a semi-ring connecting block 13 is installed at one end of the semi-ring moving block 12 away from the valve plate 2, and the semi-ring connecting A plurality of grooves 14 are provided on the outer side of the block 13, and a fixing rod 15 is symmetrically installed inside the groove 14. A limit block 16 is slidably connected inside the groove 14, and the limit block 16 is sleeved on the outer surface of the fixing rod 15. A spring 2 17 is sleeved on the outer surface of the fixing rod 15, and the spring 2 17 is located on the side of the limit block 16 close to the semi-ring moving block 12. The outer side of the semi-ring connecting block 13 is slidably connected to the semi-ring fixing block 18, and the outer side of the semi-ring fixing block 18 is fixedly connected to the inner wall of the valve body 1, and the inner side of the semi-ring fixing block 18 is fixedly connected to the limit block 16. An air bag 19 is installed between the semi-ring moving block 12 and the semi-ring fixing block 18. A circular cavity 20 is provided inside the valve body 1, and the rotating shaft 3 passes through the circular cavity 20. A partition plate 21 is installed in the middle of the circular cavity 20, and push rings 22 are arranged on both sides of the partition plate 21. A plurality of springs 3 23 are installed at one end of the push ring 22, and the spring 3 23 is fixedly connected to the partition plate 21, and a sealing ring 24 is installed at the other end of the push ring 22.

[0024] The working principle of the utility model is: the positioning block 9 is pulled by the pull ring 10 to move away from a circular groove block 11, and then the handle 4 is used to push the rotating shaft 3 to rotate ninety degrees to close the valve plate 2, and then the positioning block 9 is pushed to reset and insert into the circular groove block 11 by the spring 1 8 to fix the position of the valve plate 2. When the valve plate 2 is closed, the valve plate 2 pushes the semi-ring moving block 12 to move, and the semi-ring moving block 12 drives the semi-ring connecting block 13 to move, so that the spring 2 17 is compressed by the limit block 16 and the inner wall of the groove 14. At the same time, the semi-ring moving block 12 moves to squeeze the airbag 19, so that the airbag 19 is squeezed and deformed to block the gap, thereby achieving the effect of sealing and preventing leakage. At the same time, the spring 3 23 pushes the pushing ring 22 to move, and the pushing ring 22 squeezes the sealing ring 24, so that the sealing ring 24 is squeezed and deformed to closely contact the rotating shaft 3, thereby improving the sealing effect.

[0025] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A circular air valve anti-leakage sealing structure, comprising a valve body (1), characterized in that: A valve plate (2) is arranged inside the valve body (1), a rotating shaft (3) is installed in the middle of the valve plate (2), one end of the rotating shaft (3) is rotatably connected to the inner wall of the valve body (1), and the other end of the rotating shaft (3) passes through the valve body (1) and is installed with a handle (4); Two semi-ring moving blocks (12) are arranged inside the valve body (1), and the two semi-ring moving blocks (12) are respectively located on the lower left side and the upper right side of the valve plate (2), and the semi-ring moving blocks (12) contact the valve plate (2), and a semi-ring connecting block (13) is installed at one end of the semi-ring moving block (12) away from the valve plate (2); A plurality of grooves (14) are provided on the outer side of the semi-ring connecting block (13), a fixing rod (15) is symmetrically installed inside the groove (14), a limiting block (16) is slidably connected inside the groove (14), and the limiting block (16) is sleeved on the outer surface of the fixing rod (15), a second spring (17) is sleeved on the outer surface of the fixing rod (15), and the second spring (17) is located on the side of the limiting block (16) close to the semi-ring moving block (12); The outer side surface of the semi-ring connecting block (13) is slidably connected to the semi-ring fixing block (18), the outer side surface of the semi-ring fixing block (18) is fixedly connected to the inner wall of the valve body (1), the inner side surface of the semi-ring fixing block (18) is fixedly connected to the limiting block (16), and an air bag (19) is installed between the semi-ring moving block (12) and the semi-ring fixing block (18); A circular cavity (20) is provided inside the valve body (1), and the rotating shaft (3) passes through the circular cavity (20). A partition plate (21) is installed in the middle of the circular cavity (20), and push rings (22) are arranged on both sides of the partition plate (21). A plurality of springs (23) are installed at one end of the push ring (22), and the springs (23) are fixedly connected to the partition plate (21). A sealing ring (24) is installed at the other end of the push ring (22).

2. The anti-leakage sealing structure of a circular air valve according to claim 1, characterized in that: A round block (5) is installed at one end of the handle (4).

3. The anti-leakage sealing structure of a circular air valve according to claim 2, characterized in that: The circular block (5) is internally slidably connected to a positioning block (9), and a pull ring (10) is installed at one end of the positioning block (9).

4. The anti-external leakage sealing structure of a circular air valve according to claim 2, characterized in that: The inner wall of the round block (5) is symmetrically provided with a sliding groove (6), the interior of the sliding groove (6) is slidably connected to a sliding block (7), and the sliding block (7) is fixedly connected to a positioning block (9).

5. The anti-external leakage sealing structure of a circular air valve according to claim 4, characterized in that: A spring (8) is installed at one end of the slider (7) away from the valve body (1).

6. The anti-external leakage sealing structure of a circular air valve according to claim 1, characterized in that: Two circular groove blocks (11) are installed on the outer side surface of the valve body (1), and the two circular groove blocks (11) are 90 degrees apart.

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