Connecting pipe capable of preventing air baffle from touching air outlet during natural opening and closing

Abstract

The utility model relates to the technical field of exhaust fan connecting pipes, and discloses a connecting pipe capable of preventing a wind shield from touching an air outlet during natural opening and closing, which comprises a connecting pipe main body connected between an air outlet pipe and an exhaust fan, the wind shield is arranged on the inner side of the connecting pipe main body, a limiting component is arranged on one side of the wind shield, and a rotating component is arranged on one side of the limiting component; the rotating assembly comprises two sleeves and a supporting table, a shaft hole is formed in the center of one side of each sleeve, a clamping groove is formed in the end face of one end of each sleeve, a base is clamped to the inner side of each clamping groove, and a sealing ring is integrally formed on each base; the rotating shaft is integrally formed on one side of the supporting table, the wind shield is completely contained in the inner side of the connecting pipe body after being opened and does not interfere with the air outlet pipe, the problem that the wind shield is clamped in the inner side of the air outlet pipe due to collision or friction with the air outlet pipe is effectively solved, and the stability and reliability of operation of the exhaust fan are guaranteed; and the equipment failure risk caused by clamping stagnation of the wind shield is reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of exhaust fan connecting pipe technology, specifically a connecting pipe that prevents the wind deflector from hitting the air outlet when it opens and closes naturally. Background Technology

[0002] In existing ventilation equipment, especially in the application of exhaust fans, the connecting pipe, as a crucial component connecting the exhaust fan outlet to the external ventilation duct, has a significant impact on the overall performance and service life of the equipment due to its structural design. Currently, common connecting pipes are usually equipped with a baffle. The main function of the baffle is to automatically close when the exhaust fan stops running, preventing outside air from flowing back into the room, and also providing some dust and insect protection. When the exhaust fan is running, the baffle can open to allow gas to escape smoothly.

[0003] Traditional connecting pipes often have internal baffles that can easily collide or rub against the exhaust pipe when opened. Because the baffles often lack a suitable storage location after opening, their movement trajectory is not ideally aligned with the exhaust pipe's position. This can cause the baffles to become stuck inside the exhaust pipe during natural opening and closing. Once stuck, this can negatively impact the normal operation of the exhaust fan. Therefore, a connecting pipe design is proposed to prevent the baffles from hitting the exhaust outlet during natural opening and closing. Utility Model Content

[0004] The purpose of this utility model is to provide a connecting pipe that prevents the wind deflector from hitting the air outlet during natural opening and closing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a connecting pipe to prevent the wind deflector from naturally opening and closing and hitting the air outlet, comprising a connecting pipe body for connecting between the air outlet pipe and the exhaust fan, the inner side of the connecting pipe body is provided with a wind deflector, a limiting component is provided on one side of the wind deflector, and a rotating component is provided on one side of the limiting component.

[0006] The rotating assembly includes two sleeves and a support platform. A shaft hole is opened at the center of one side of the sleeve, and a slot is opened at one end face of the sleeve. A base is engaged inside the slot, and a sealing ring is integrally formed on the base.

[0007] One side of the support platform has an integrally formed pivot.

[0008] The limiting component includes a limiting block, and a limiting rod is integrally formed on one side of the limiting block.

[0009] Preferably, the above-mentioned: a limiting groove is formed on the outer side of the main body of the connector, the outer side of the limiting block is inserted into the inner side of the limiting groove, and one side of the limiting rod passes through one side of the main body of the connector.

[0010] Preferably, screws are connected between the inner sides of the limiting block and the limiting groove.

[0011] When one side of the wind deflector is in contact with one side of the limiting rod, the wind deflector is in a closed state.

[0012] Preferably, the inner wall of the slot is fixed with a protrusion, and one side of the protrusion is attached to one side of the base.

[0013] Preferably, the outer side of the rotating shaft is rotatably connected to the inner side of the shaft hole, and one side of each of the two sleeves is fixed to the opposite side of the wind baffle.

[0014] Preferably, one side of the support platform is fixed to the opposite side of the inner wall of the pipe body, and one side of the sealing ring is tightly fitted to one side of the support platform and can slide relative to it.

[0015] Preferably, the above-mentioned main body of the pipe is provided with an air outlet and an air inlet at both ends;

[0016] When the air outlet and air inlet are connected, the baffle plate is opened to be parallel to the axis of the main body of the pipe and is completely retracted inside the main body of the pipe, and the baffle plate does not interfere with the air outlet pipe.

[0017] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0018] 1. The baffle plate is completely retracted inside the main body of the pipe after being opened and does not interfere with the air outlet pipe. This effectively avoids the problem of the baffle plate getting stuck inside the air outlet pipe due to collision or friction with it, ensuring the stability and reliability of the exhaust fan operation, reducing the risk of equipment failure caused by the baffle plate getting stuck, and extending the service life of the equipment.

[0019] Second, when the limit rod is damaged after long-term use, simply use a screwdriver to remove the screws to remove the limit block from the inside of the limit groove, and then remove the limit rod from the inside of the connecting pipe body. The operation is equally simple when installing a new limit rod and limit block, which greatly reduces the difficulty and cost of maintenance. No professional personnel or complicated tools are required, and ordinary users can easily replace the limit rod, which improves the maintainability of the equipment.

[0020] Third, the sealing ring fits tightly against the support platform on one side and can slide relative to it when the wind deflector rotates. This ensures that the wind deflector can rotate normally, and the sliding contact reduces the friction during rotation, which helps to maintain the smooth rotation of the shaft and shaft hole and avoids the problem of rotation jamming caused by dust and other impurities entering. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a first-view structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0025] Figure 4 For the present utility model Figure 3 Schematic diagram of the structure at point A in the middle;

[0026] Figure 5 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the limiting component of this utility model;

[0028] Figure 7 This is a schematic diagram of the sealing ring structure of this utility model.

[0029] Explanation of reference numerals in the attached drawings: 1. Main body of the connecting pipe; 2. Baffle plate; 3. Limiting component; 31. Limiting block; 32. Limiting rod; 33. Limiting groove; 34. Screw; 4. Air outlet; 5. Rotating component; 51. Sleeve; 52. Support platform; 53. Sealing ring; 54. Rotating shaft; 55. Shaft hole; 56. Slot; 57. Protrusion; 58. Base; 6. Air inlet. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0032] Example

[0033] Please see Figure 1-7 This utility model provides a technical solution: a connecting pipe to prevent the wind deflector from naturally opening and closing and hitting the air outlet, including a connecting pipe body 1 for connecting between the air outlet pipe and the exhaust fan, a wind deflector 2 is provided on the inner side of the connecting pipe body 1, the wind deflector 2 is eccentrically set and can be closed under the action of gravity, a limiting component 3 is provided on one side of the wind deflector 2, and a rotating component 5 is provided on the other side of the limiting component 3; when the exhaust fan stops working, the wind deflector 2 can automatically rotate around the rotating shaft 54 ​​to close under the action of gravity, without the need for additional manual operation or complex driving device, the structure is simple and the operation is reliable, and it can promptly prevent outside air, dust and other things from backflowing into the room through the exhaust fan.

[0034] The rotating assembly 5 includes two sleeves 51 and a support platform 52. A shaft hole 55 is provided at the center of one side of the sleeve 51, and a slot 56 is provided at one end face of the sleeve 51. A base 58 is engaged inside the slot 56, and a sealing ring 53 is integrally formed on the base 58. The sealing ring 53 can be made of silicone or fluororubber. A rotating shaft 54 ​​is integrally formed on one side of the support platform 52.

[0035] A protrusion 57 is fixed to the inner wall of the slot 56. One side of the protrusion 57 is attached to one side of the base 58. The outer side of the rotating shaft 54 ​​is rotatably connected to the inner side of the shaft hole 55. One side of the two sleeves 51 is fixed to the opposite side of the baffle plate 2. One side of the support platform 52 is fixed to the opposite side of the inner wall of the pipe body 1. One side of the sealing ring 53 is tightly attached to one side of the support platform 52 and can slide relative to it. The sealing ring 53 and the support platform 52 achieve sealing through an interference fit. A small amount of silicone grease can be applied during installation to assist lubrication, forming an effective sealing barrier that can prevent external dust, debris and other objects from entering the inner side of the shaft hole 55, thereby protecting the rotating shaft 54 ​​and the shaft hole 55 from contamination and damage, and extending their service life.

[0036] The limiting component 3 includes a limiting block 31, with a limiting rod 32 integrally formed on one side of the limiting block 31. A limiting groove 33 is opened on the outer side of the connecting pipe body 1, and the outer side of the limiting block 31 is inserted into the inner side of the limiting groove 33. One side of the limiting rod 32 passes through one side of the connecting pipe body 1. A screw 34 connects the inner side of the limiting block 31 and the limiting groove 33. When one side of the wind deflector 2 is attached to one side of the limiting rod 32, the wind deflector 2 is in a closed state. When the wind deflector 2 is closed, one side is attached to one side of the limiting rod 32, which can accurately stop in the closed position, ensuring the sealing of the closed wind deflector 2, further enhancing its function of preventing external substances from entering the room, and also avoiding the situation where the wind deflector 2 is not closed tightly due to excessive rotation or other reasons.

[0037] The main body of the pipe is provided with an air outlet 4 and an air inlet 6 at its two ends respectively. When the air outlet 4 and the air inlet 6 are connected, the baffle 2 is opened to be parallel to the axis of the main body of the pipe and is completely retracted into the inner side of the main body of the pipe, and the baffle 2 does not interfere with the air outlet pipe.

[0038] Structural principle: When the exhaust fan is working, the airflow cuts into the air inlet 6 along the eccentric direction of the baffle 2, pushing the baffle 2 to rotate around the shaft 54 ​​and open. When the baffle 2 is opened to be parallel to the axis of the main body 1, it is completely retracted inside the main body 1, without affecting the airflow from the outlet 4. At the same time, after the baffle 2 is opened, it is completely retracted inside the main body 1 and does not interfere with the air outlet pipe, thus avoiding the baffle 2 from interfering with the air outlet pipe after it is opened, causing the baffle 2 to get stuck inside the air outlet pipe.

[0039] When the exhaust fan stops working, the baffle 2 rotates around the pivot 54 and closes under the action of gravity. When one side of the baffle 2 is in contact with the side of the limit rod 32, the baffle 2 stays in the closed position.

[0040] When one side of the wind deflector 2 is attached to the side of the limiting rod 32, the wind deflector 2 is in the closed state. The limiting component 3 limits the closed position of the wind deflector 2 through the limiting rod 32, ensuring that the wind deflector 2 can accurately stay in the closed position and prevent it from being over-opened or closed. When the limiting rod 32 is damaged after long-term use, simply use a screwdriver to remove the screw 34, replace the limiting block 31 and the limiting rod 32 as a whole, remove the limiting rod 32 from the inside of the pipe body 1, take out the new limiting rod 32 and the limiting block 31, insert the limiting rod 32 into the inside of the pipe body 1, and make the limiting block 31 located inside the limiting groove 33. Use the screw 34 to connect the limiting block 31 to the limiting groove 33.

[0041] When the baffle plate 2 rotates, one side of the sealing ring 53 is tightly attached to one side of the support platform 52 and can slide relative to it. While ensuring the rotation of the baffle plate 2, it plays a sealing role to prevent external dust from entering the inner side of the shaft hole 55 and causing the rotating shaft 54 ​​and shaft hole 55 to jam.

[0042] In summary, by opening the baffle 2 and retracting it completely inside the main body 1 without interfering with the air outlet pipe, the problem of the baffle 2 getting stuck inside the air outlet pipe due to collision or friction with it is effectively avoided. This ensures the stability and reliability of the exhaust fan operation, reduces the risk of equipment failure caused by the baffle 2 getting stuck, and extends the service life of the equipment.

[0043] When the limit rod 32 is damaged after long-term use, simply use a screwdriver to remove the screw 34 to remove the limit block 31 from the inside of the limit groove 33, and then remove the limit rod 32 from the inside of the connecting pipe body 1. The operation is equally simple when installing a new limit rod 32 and limit block 31, which greatly reduces the difficulty and cost of maintenance. No professional personnel or complicated tools are required, and ordinary users can easily replace the limit rod 32, which improves the maintainability of the equipment.

[0044] When the baffle plate 2 rotates, the sealing ring 53 fits tightly against one side of the support platform 52 and can slide relative to it. This ensures that the baffle plate 2 can rotate normally, and the sliding contact reduces the friction during the rotation process. This helps to maintain the smooth rotation of the rotating shaft 54 ​​and the shaft hole 55 and avoids the problem of rotation jamming caused by the entry of dust and other impurities.

[0045] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A connecting pipe to prevent a wind deflector from naturally opening and closing and hitting an air outlet, comprising a connecting pipe body (1) for connecting between an air outlet pipe and an exhaust fan, characterized in that: The inner side of the main body (1) of the pipe is provided with a wind baffle (2), a limiting component (3) is provided on one side of the wind baffle (2), and a rotating component (5) is provided on one side of the limiting component (3); The rotating assembly (5) includes two sleeves (51) and a support platform (52). A shaft hole (55) is provided at the center of one side of the sleeve (51). A slot (56) is provided on one end face of the sleeve (51). A base (58) is snapped into the inside of the slot (56). A sealing ring (53) is integrally formed on the base (58). The support platform (52) has a rotating shaft (54) integrally formed on one side; The limiting component (3) includes a limiting block (31), and a limiting rod (32) is integrally formed on one side of the limiting block (31).

2. The connecting pipe for preventing the wind deflector from naturally opening and closing and hitting the air outlet as described in claim 1, characterized in that: A limiting groove (33) is provided on the outside of the main body (1) of the connector, the limiting block (31) is inserted into the inside of the limiting groove (33) on the outside, and one side of the limiting rod (32) passes through one side of the main body (1).

3. The connecting pipe for preventing the wind deflector from naturally opening and closing and hitting the air outlet as described in claim 2, characterized in that: A screw (34) is connected between the inner sides of the limiting block (31) and the limiting groove (33); When one side of the wind deflector (2) is attached to one side of the limiting rod (32), the wind deflector (2) is in a closed state.

4. The connecting pipe for preventing the wind deflector from naturally opening and closing and hitting the air outlet as described in claim 1, characterized in that: The inner wall of the slot (56) is fixed with a protrusion (57), and one side of the protrusion (57) is attached to one side of the base (58).

5. The connecting pipe for preventing the wind deflector from naturally opening and closing and hitting the air outlet as described in claim 1, characterized in that: The outer side of the rotating shaft (54) is rotatably connected to the inner side of the shaft hole (55), and one side of each of the two sleeves (51) is fixed to the opposite side of the wind baffle (2).

6. The connecting pipe for preventing the wind deflector from naturally opening and closing and hitting the air outlet as described in claim 1, characterized in that: One side of the support platform (52) is fixed to the opposite side of the inner wall of the pipe body (1), and one side of the sealing ring (53) is tightly attached to one side of the support platform (52) and can slide relative to it.

7. The connecting pipe for preventing the wind deflector from naturally opening and closing and hitting the air outlet as described in claim 1, characterized in that: The main body (1) of the pipe is provided with an air outlet (4) and an air inlet (6) at both ends; When the air outlet (4) and the air inlet (6) are connected, the baffle (2) is opened to be parallel to the axis of the pipe body (1) and is completely retracted into the inside of the pipe body (1). The baffle (2) does not interfere with the air outlet pipe.

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