Ventilation air pipe with good sealing performance

Abstract

The utility model provides a ventilation duct with good sealing performance, which belongs to the technical field of ventilation ducts, and comprises a plurality of ventilation duct bodies, one end of each ventilation duct body is a first connecting end, the other end of each ventilation duct body is a second connecting end, four groups of inner walls of each first connecting end are respectively provided with a sealing pressing plate, and the sealing pressing plates are arranged on the inner walls of the first connecting ends. An obliquely upward flow guide structure is arranged on the side, close to the first connecting end, of the sealing pressing plate, an inserting groove used for being connected with the sealing pressing plate in a clamped mode is formed in the inner wall of the second connecting end, and connecting baffles are arranged at the outer end of the first connecting end and the outer end of the second connecting end correspondingly. Every two adjacent ventilation pipe bodies are locked and fixed through a connecting sleeve piece, and the connecting sleeve pieces are used for pressing and sealing the connecting baffles of the first connecting ends and the second connecting ends which are in contact with each other; a groove is formed in the surface of the contact end of the first connecting end and the second connecting end; the problem of insufficient sealing performance can be solved, and connection and installation are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilation ducts, and in particular relates to a ventilation duct with good sealing performance. Background Art

[0002] With the continuous development of the construction industry and people's increasing requirements for indoor environmental quality, the importance of ventilation systems has become increasingly prominent, and ventilation ducts mainly play the role of conveying air, ensuring the reasonable circulation of air in commercial buildings, industrial plants and residences. Good ventilation can improve indoor air quality, remove polluted air, introduce fresh air, and create a healthy and comfortable indoor environment for people. At the same time, in some industrial scenarios, ventilation ducts also undertake the task of conveying specific gases or removing harmful gases, which is of key significance to ensuring production safety and the health of workers.

[0003] However, at present, ventilation ducts have the problem of insufficient sealing in practical applications. On the one hand, the sealing design of some ventilation ducts at the connection parts is not perfect, and the connection method is relatively simple and rough, which leads to gaps at the connection parts. Air easily leaks from these gaps, which not only affects the ventilation effect, but also may cause energy waste. For example, in some traditional flange connection methods, the sealing gasket is prone to aging and deformation, thereby reducing the sealing performance. On the other hand, the material of the duct itself may also affect its sealing. Some low-quality ducts may have defects or unevenness during the production process, and are prone to tiny cracks or damage during long-term use, which in turn causes the problem of insufficient sealing. Utility Model Content

[0004] In view of this, the utility model provides a ventilation duct with good sealing performance, which can solve the problem of insufficient sealing and is convenient for connection and installation.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a ventilation duct with good sealing performance, comprising a multi-section ventilation pipe body, wherein one end of the ventilation pipe body is a first connection end, and the other end is a second connection end, four groups of inner walls of the first connection end are provided with sealing pressure plates, and the sealing pressure plate is provided with an upward oblique guide structure on the side close to the first connection end, and the inner wall of the second connection end is provided with a slot for clamping the sealing pressure plate, and the outer ends of the first connection end and the second connection end are provided with connecting baffles, and the adjacent ventilation pipe bodies are locked and fixed by connecting kits, and the connecting kit is used to compress and seal the connecting baffles of the first connection end and the second connection end that are in contact with each other.

[0007] The technical effects of a ventilation duct with good sealing performance provided by the utility model are as follows: by setting up multiple sections of ventilation pipe bodies, it can flexibly adapt to different length requirements and facilitate on-site installation and construction. Through the first connecting end and the second connecting end on both sides, adjacent ventilation pipe bodies are sequentially connected through the first connecting end to the second connecting end and cooperate with the connecting kit for splicing and fixed installation. By setting up a sealing pressure plate, it is used to make the sealing pressure plate fit tightly with the slot during splicing and installation to play a sealing role, and the airflow direction can be guided by the guide structure to prevent leakage. By setting up a connecting baffle, it is used to provide a fixed position for the connecting kit, which is locked and fixed in cooperation with the connecting kit.

[0008] On the basis of the above technical solution, the ventilation duct with good sealing performance of the utility model can also be improved as follows:

[0009] A groove is provided on the contact end surfaces of the first connecting end and the second connecting end, and a sealing gasket is provided inside the groove.

[0010] The beneficial effect of adopting the above-mentioned improvement scheme is that the sealing performance of the contact end between the adjacent first connection end and the second connection end is further enhanced by providing the groove and the sealing gasket.

[0011] Furthermore, the connection kit includes four groups of movable links, adjacent movable links are movably hinged through hinge shafts, one end of the first section of the movable link is provided with a fixing groove, and one end of the last section of the movable link is provided with a fixing plate adapted to the fixing groove.

[0012] The beneficial effects of adopting the above-mentioned improvement scheme are: by setting a movable hinged movable connecting rod and using the sealing groove on its surface to cooperate with the connecting baffles on both sides for covering and clamping, closed installation is achieved using the fixing groove, fixing plate and fixing bolts.

[0013] Furthermore, a screw hole is provided inside the fixing groove, a through hole is opened in the fixing plate corresponding to the position of the screw hole, and the fixing plate is fixedly connected by fixing bolts.

[0014] Furthermore, a sealing groove is provided on the movable connecting rod, a locking pressure plate is provided at one end of the sealing groove, and the locking pressure plate is movably connected to the inside of the sealing groove through an elastic telescopic kit.

[0015] Furthermore, two groups of fastening bolts are provided on one side of the movable connecting rod, and the fastening bolts are used to drive the locking pressure plate to tighten and fix the connecting baffles on the adjacent two sides.

[0016] The beneficial effect of adopting the above-mentioned improvement scheme is: by setting the fastening bolts, the telescopic length of the locking pressure plate can be adjusted by loosening the fastening bolts, thereby achieving the effect of tightening the connecting baffle and achieving a fixed sealing effect.

[0017] Furthermore, the elastic telescopic kit includes a telescopic connecting rod, a sleeve and a tension spring, the telescopic connecting rod is movably connected to the sleeve, and the sleeve and the movable connecting rod are an integral structure.

[0018] The beneficial effect of adopting the above-mentioned improvement scheme is: by setting an elastic telescopic kit, the locking pressure plate can be adjusted in length, so as to cooperate with the fastening bolts for locking and fixing, thereby improving the fastening effect and sealing performance and ensuring a tight connection.

[0019] Furthermore, one end of the telescopic connecting rod is fixedly connected to the locking pressure plate, and a through hole is provided on a side of the telescopic connecting rod close to the locking pressure plate.

[0020] Furthermore, one end of the tension spring is fixedly connected to the bottom end of the telescopic connecting rod.

[0021] Furthermore, the other end of the tension spring is fixedly connected to the bottom wall of the sleeve.

[0022] The beneficial effect of adopting the above-mentioned improvement scheme is that by arranging a tension spring, when the fastening bolt is loosened, the tension spring can drive the locking pressure plate to reset.

[0023] Compared with the prior art, the utility model provides a ventilation duct with good sealing performance, which has the following beneficial effects: by setting up multiple sections of ventilation pipe bodies, it can flexibly adapt to different length requirements and facilitate on-site installation and construction; through the first connecting end and the second connecting end on both sides, adjacent ventilation pipe bodies are sequentially connected through the first connecting end to the second connecting end and cooperate with the connecting kit for splicing and fixing installation; by setting up a sealing pressure plate, it is used to make the sealing pressure plate fit tightly with the slot during splicing and installation to play a sealing role, and the airflow direction can be guided through the guide structure to prevent leakage; by setting up a connecting baffle, it is used to provide a fixed position for the connecting kit and cooperate with the connecting kit for locking and fixing; by setting up a groove and a sealing gasket, it is used to further enhance the sealing performance of the contact end between the adjacent first connecting end and the second connecting end; by setting up a movable hinged movable connecting rod, and through the sealing groove on its surface, it is used to cooperate with the connecting baffles on both sides for covering and clamping, and the fixed groove, the fixed plate and the fixing bolts are used to achieve closed installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1It is a structural schematic diagram of a ventilation duct with good sealing performance;

[0026] Figure 2 for Figure 1 The enlarged schematic diagram of part A in the middle;

[0027] Figure 3 A schematic diagram of a connection kit for a ventilation duct with good sealing performance;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 10. Ventilation pipe body; 11. First connecting end; 12. Second connecting end; 13. Sealing pressure plate; 14. Guide structure; 15. Slot; 16. Connecting baffle; 17. Connecting kit; 18. Groove; 19. Sealing gasket; 20. Movable connecting rod; 21. Fixed groove; 22. Fixed plate; 23. Sealing groove; 24. Locking pressure plate; 25. Elastic telescopic kit; 26. Fastening bolt; 27. Telescopic connecting rod; 28. Sleeve; 29. ​​Tension spring. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0031] like Figure 1-3 As shown, it is an embodiment of a ventilation duct with good sealing performance provided by the utility model. In this embodiment, it includes a multi-section ventilation pipe body 10, wherein one end of the ventilation pipe body 10 is a first connecting end 11, and the other end is a second connecting end 12. Sealing pressure plates 13 are arranged on the four groups of inner walls of the first connecting end 11, and an oblique upward guide structure 14 is arranged on the side of the sealing pressure plate 13 close to the first connecting end 11. A slot 15 for clamping the sealing pressure plate 13 is arranged on the inner wall of the second connecting end 12. A connecting baffle 16 is arranged on the outer ends of the first connecting end 11 and the second connecting end 12. Adjacent ventilation pipe bodies 10 are locked and fixed by a connecting kit 17. The connecting kit 17 is used to compress and seal the connecting baffles 16 of the first connecting end 11 and the second connecting end 12 that are in contact.

[0032] The ventilation pipe body 10 is made of galvanized steel plate with a thickness ranging from 0.5 mm to 1.2 mm.

[0033] When in use, the first connecting end 11 and the second connecting end 12 of the adjacent ventilation pipe body 10 are contacted and corresponded through the connecting baffle 16. When splicing, it should be noted that the sealing pressure plate 13 of the first connecting end 11 corresponds to the position of the slot 15 of the second connecting end 12, and the sealing gasket 19 is pressed by the grooves 18 on both sides. After the contact and correspondence, the movable connecting rod 20 of the connecting kit 17 is covered and clamped in turn with the four edges of the connecting baffle 16, and the fixing bolts are used to lock and close it through the fixing plate 22 corresponding to the fixing groove 21. After the connecting kit 17 is locked and closed, the fastening bolts 26 on one side of the movable connecting rod 20 are tightened to push the locking pressure plate 24 to press the connecting baffle 16 to achieve further sealing and fixation.

[0034] In the above technical solution, a groove 18 is formed on the contact end surfaces of the first connecting end 11 and the second connecting end 12 , and a sealing gasket 19 is disposed inside the groove 18 .

[0035] Furthermore, in the above technical solution, the connection kit 17 includes four groups of movable links 20, and adjacent movable links 20 are movably hinged through hinge shafts. A fixing groove 21 is provided at one end of the first movable link 20, and a fixing plate 22 adapted to the fixing groove 21 is provided at one end of the last movable link 20.

[0036] Furthermore, in the above technical solution, a screw hole is provided inside the fixing groove 21, a through hole is opened at the position of the fixing plate 22 corresponding to the screw hole, and the fixing connection is performed by fixing bolts.

[0037] Furthermore, in the above technical solution, a sealing groove 23 is provided on the movable connecting rod 20 , a locking plate 24 is provided at one end of the sealing groove 23 , and the locking plate 24 is movably connected to the inside of the sealing groove 23 through an elastic telescopic kit 25 .

[0038] Furthermore, in the above technical solution, two groups of fastening bolts 26 are provided on one side of the movable connecting rod 20, and the fastening bolts 26 are used to drive the locking pressure plate 24 to tighten and fix the connecting baffles 16 on the adjacent two sides.

[0039] Furthermore, in the above technical solution, the elastic telescopic kit 25 includes a telescopic link 27, a sleeve 28 and a tension spring 29, the telescopic link 27 is movably connected to the sleeve 28, and the sleeve 28 and the movable link 20 are an integral structure.

[0040] Furthermore, in the above technical solution, one end of the telescopic connecting rod 27 is fixedly connected to the locking pressure plate 24 , and a through hole is provided on one side of the telescopic connecting rod 27 close to the locking pressure plate 24 .

[0041] Furthermore, in the above technical solution, one end of the tension spring 29 is fixedly connected to the bottom end of the telescopic connecting rod 27 .

[0042] Furthermore, in the above technical solution, the other end of the tension spring 29 is fixedly connected to the bottom wall of the sleeve 28 .

[0043] Specifically, the principle of the utility model is: when in use, the first connecting end 11 and the second connecting end 12 of the adjacent ventilation pipe body 10 are contacted and corresponded through the connecting baffle 16. When splicing, it should be noted that the sealing pressure plate 13 of the first connecting end 11 corresponds to the position of the slot 15 of the second connecting end 12, and the sealing gasket 19 is pressed by the grooves 18 on both sides. After the contact and correspondence, the movable connecting rod 20 of the connecting kit 17 is sequentially covered and clamped with the four edges of the connecting baffle 16, and the fixing bolts are used to lock and close it through the fixing plate 22 corresponding to the fixing groove 21. After the connecting kit 17 is locked and closed, the fastening bolts 26 on one side of the movable connecting rod 20 are tightened to push the locking pressure plate 24 to press the connecting baffle 16 to achieve further sealing and fixation.

Claims

1. A ventilation duct with good sealing performance, comprising a plurality of ventilation duct bodies (10), characterized in that: One end of the ventilation pipe body (10) is a first connection end (11), and the other end is a second connection end (12). Four groups of inner walls of the first connection end (11) are each provided with a sealing pressure plate (13). A side of the sealing pressure plate (13) close to the first connection end (11) is provided with an upwardly inclined flow guide structure (14). The inner wall of the second connection end (12) is provided with a slot (15) for clamping the sealing pressure plate (13). The outer ends of the first connection end (11) and the second connection end (12) are each provided with a connecting baffle (16). Adjacent ventilation pipe bodies (10) are locked and fixed by a connecting kit (17). The connecting kit (17) is used to press and seal the connecting baffles (16) of the first connection end (11) and the second connection end (12) that are in contact with each other.

2. A ventilation duct with good sealing performance according to claim 1, characterized in that: A groove (18) is provided on the contact end surfaces of the first connecting end (11) and the second connecting end (12), and a sealing gasket (19) is provided inside the groove (18).

3. A ventilation duct with good sealing performance according to claim 2, characterized in that: The connection kit (17) includes four groups of movable links (20), and adjacent movable links (20) are movably hinged via hinge shafts. A fixing groove (21) is provided at one end of the first section of the movable link (20), and a fixing plate (22) adapted to the fixing groove (21) is provided at one end of the last section of the movable link (20).

4. A ventilation duct with good sealing performance according to claim 3, characterized in that: The fixing groove (21) is provided with a screw hole inside, and the fixing plate (22) is provided with a through hole corresponding to the position of the screw hole, and is fixedly connected by fixing bolts.

5. A ventilation duct with good sealing performance according to claim 4, characterized in that: The movable connecting rod (20) is provided with a sealing groove (23), one end of the sealing groove (23) is provided with a locking pressure plate (24), and the locking pressure plate (24) is movably connected to the inside of the sealing groove (23) via an elastic telescopic sleeve (25).

6. A ventilation duct with good sealing performance according to claim 5, characterized in that: Two groups of fastening bolts (26) are provided on one side of the movable connecting rod (20), and the fastening bolts (26) are used to drive the locking pressure plate (24) to press and fix the connecting baffles (16) on two adjacent sides.

7. A ventilation duct with good sealing performance according to claim 6, characterized in that: The elastic telescopic kit (25) comprises a telescopic connecting rod (27), a sleeve (28) and a tension spring (29); the telescopic connecting rod (27) is movably connected to the sleeve (28); and the sleeve (28) and the movable connecting rod (20) are an integral structure.

8. A ventilation duct with good sealing performance according to claim 7, characterized in that: One end of the telescopic connecting rod (27) is fixedly connected to the locking pressure plate (24), and a through hole is provided on a side of the telescopic connecting rod (27) close to the locking pressure plate (24).

9. A ventilation duct with good sealing performance according to claim 8, characterized in that: One end of the tension spring (29) is fixedly connected to the bottom end of the telescopic connecting rod (27).

10. A ventilation duct with good sealing performance according to claim 9, characterized in that: The other end of the tension spring (29) is fixedly connected to the bottom wall of the sleeve (28).

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