Assembly type anti-leakage smoke exhaust air pipe

Abstract

The utility model provides an assembly type anti-leakage smoke exhaust air pipe which comprises a first air pipe and a second air pipe, one end of the first air pipe is fixedly connected with a first inserting block, a first inserting groove is formed in the end face, close to the first air pipe, of the second air pipe, and the first inserting block is connected with the first inserting groove in a clamped mode. Second inserting grooves are formed in the outer circle face of the first air pipe and the outer circle face of the second air pipe correspondingly, a second inserting plate and a third inserting plate are slidably connected into the second inserting grooves, a limiting mechanism is arranged on the second inserting plate, a first sliding block is fixedly connected to the third inserting plate, and the first air pipe is sleeved with an outer sleeve. A first sliding limiting groove and a second sliding limiting groove are formed in the outer sleeve. According to the scheme, after a second insertion plate and a third insertion plate are both inserted into a second insertion groove, an outer sleeve is arranged on the outer circle face of the second insertion plate and the outer circle face of the third insertion plate in a sleeving mode, so that a limiting mechanism on the second insertion plate can be connected with a first sliding limiting groove in a clamped mode by rotating the second insertion plate; therefore, the purpose of improving the stability and the sealing performance of the anti-leakage smoke exhaust air pipe is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust pipes, in particular to an assembled anti-leakage smoke exhaust air duct. Background Art

[0002] The assembled anti-leakage smoke exhaust duct is a kind of equipment used in building ventilation system, which is mainly used to remove smoke and harmful gases in buildings to protect people's life safety and physical health.

[0003] For example, a Chinese patent discloses "an integrated assembled floating bead smoke exhaust duct" (patent number: CN112681670A), which includes a pipe section including a metal duct, a U-shaped groove and a floating bead fireproof insulation board module; both ends of the floating bead fireproof insulation board module are fixedly inserted into the U-shaped groove, and four floating bead fireproof insulation board modules are vertically installed on the pipe wall of the metal duct in pairs, and silica gel is filled between adjacent floating bead fireproof insulation board modules; the floating bead fireproof insulation board module includes floating bead fireproof insulation board, floating bead gel and galvanized hemmed steel plate. The above patent has the advantage of rapid assembly and disassembly.

[0004] However, the above-mentioned clamping method of the smoke exhaust duct is difficult to prevent leakage from the gaps between the ducts, and its stability is not high. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides an assembled anti-leakage smoke exhaust duct, which solves the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: an assembled anti-leakage smoke exhaust duct, including a first duct and a second duct, characterized in that: a first plug block is fixedly connected to one end of the first duct, a first slot is opened on an end face of the second duct close to the first duct, the first plug block is clamped with the first slot, a second slot is opened on the outer circumferential surface of the first duct and the second duct, a second plug plate and a third plug plate are slidably connected in the second slot, a limiting mechanism is arranged on the second plug plate, a first slider is fixedly connected to the third plug plate, an outer sleeve is sleeved on the first duct, a first sliding limit groove and a second sliding limit groove are opened on the outer sleeve, the limiting mechanism is clamped with the first sliding limit groove, and the first slider is slidably connected to the second sliding limit groove.

[0009] Preferably, the limiting mechanism includes a second slider and a spring, a third sliding limiting groove is provided on one side of the second plug plate close to the outer circumferential surface of the outer sleeve, one end of the spring is fixedly connected to the third sliding limiting groove, and the other end of the spring is fixedly connected to the second slider.

[0010] Preferably, a sealing groove is formed on the second plug board and the second slot, and a sealing ring is provided in the sealing groove.

[0011] Preferably, an end surface of the second sliding block away from the spring is provided with a curved surface.

[0012] Preferably, the thickness of the second sliding block is equal to the thickness of the first sliding limiting groove.

[0013] Preferably, the width of the second plug plate is equal to the width of the third plug plate, and the width of the second plug plate is equal to the sum of the distance between the inner circular surface of the outer sleeve and the outer circular surface of the first air duct and the depth of the second slot.

[0014] (III) Beneficial effects

[0015] The utility model provides an assembled anti-leakage smoke exhaust duct, which has the following beneficial effects:

[0016] 1. In this scheme, after the second plug plate and the third plug plate are inserted into the second slot, the outer sleeve is sleeved on the outer circumferential surface of the second plug plate and the third plug plate, so that the limiting mechanism on the second plug plate can be engaged with the first sliding limiting groove after the second plug plate is rotated, thereby achieving the purpose of improving the stability and sealing of the anti-leakage smoke exhaust duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the structure of A.

[0020] In the figure: 11, first air duct; 12, second air duct; 13, first plug block; 14, first slot; 15, outer sleeve; 16, second plug plate; 17, third plug plate; 18, first sliding limit groove; 19, second sliding limit groove; 20, first slider; 21, third sliding limit groove; 22, second slider; 23, spring; 24, second slot; 25, sealing groove; 26, sealing ring. DETAILED DESCRIPTION

[0021] The utility model provides an assembled anti-leakage smoke exhaust duct, such as Figure 1-3 As shown, it includes a first air duct 11, a second air duct 12, a first plug block 13, a first slot 14, an outer sleeve 15, a second plug plate 16, a third plug plate 17, a first sliding limit groove 18, a second sliding limit groove 19, a first slider 20, a third sliding limit groove 21, a second slider 22, a spring 23, a second slot 24, a sealing groove 25, and a sealing ring 26.

[0022] like Figure 1-2 As shown, a first plug block 13 is fixedly connected to one end of the first air duct 11, a first slot 14 is provided on an end surface of the second air duct 12 close to the first air duct 11, the first plug block 13 is snapped with the first slot 14, a second slot 24 is provided on the outer circumferential surface of the first air duct 11 and the second air duct 12, a second plug plate 16 and a third plug plate 17 are slidably connected in the second slot 24, a limiting mechanism is provided on the second plug plate 16, a first slider 20 is fixedly connected to the third plug plate 17, an outer sleeve 15 is sleeved on the first air duct 11, a first sliding limiting groove 18 and a second sliding limiting groove 19 are provided on the outer sleeve 15, the limiting mechanism is snapped with the first sliding limiting groove 18, and the first slider 20 is slidably connected with the second sliding limiting groove 19.

[0023] The width of the second plug plate 16 is equal to the width of the third plug plate 17 , and the width of the second plug plate 16 is equal to the sum of the distance between the inner circumference of the outer sleeve 15 and the outer circumference of the first air duct 11 and the depth of the second slot 24 .

[0024] The limiting mechanism includes a second slider 22 and a spring 23. A third sliding limiting groove 21 is provided on one side of the second plug plate 16 close to the outer circumferential surface of the outer sleeve 15. One end of the spring 23 is fixedly connected to the third sliding limiting groove 21, and the other end of the spring 23 is fixedly connected to the second slider 22.

[0025] A sealing groove 25 is provided on the second plug plate 16 and the second slot 24, a sealing ring 26 is provided in the sealing groove 25, an arc surface is provided on the end face of the second slider 22 away from the spring 23, and the thickness of the second slider 22 is equal to the thickness of the first sliding limit slot 18. It is worth noting that the second slot 24 is an annular slot.

[0026] When the present scheme is used to assemble the anti-leakage smoke exhaust duct, first, the sealing ring 26 is sleeved in the sealing groove 25 of the first duct 11 and the second duct 12, and the second plug plate 16 and the third plug plate 17 are respectively inserted into the corresponding second slots 24, then, the first plug block 13 is snapped into the first slot 14, the first slider 20 is aligned with the second sliding limit groove 19, and the outer sleeve 15 is sleeved on the outer circumferential surface of the second plug plate 16 and the third plug plate 17.

[0027] When the outer sleeve 15 is sleeved on the outer circumferential surfaces of the second plug plate 16 and the third plug plate 17 , the inner circumferential surface of the outer sleeve 15 compresses the outer circumferential surface of the second slider 22 , so that the second slider 22 slides toward the third sliding limit groove 21 , and the second slider 22 compresses the spring 23 .

[0028] Finally, the first slider 20 is moved to make the first slider 20 and the second sliding limit groove 19 slide relative to each other, so that the first slider 20 drives the third plug plate 17 to rotate, and the third plug plate 17 pushes the second plug plate 16 to slide relative to the second slot 24, and the second plug plate 16 rotates relative to the first air duct 11 and the second air duct 12 respectively. When the second plug plate 16 rotates until the second slider 22 is aligned with the first sliding limit groove 18, the spring 23 pushes the second slider 22 to slide into the first sliding limit groove 18, thereby fixing the second plug plate 16.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled anti-leakage smoke exhaust duct, comprising a first duct (11) and a second duct (12), characterized in that: One end of the first air duct (11) is fixedly connected with a first plug block (13); an end surface of the second air duct (12) close to the first air duct (11) is provided with a first slot (14); the first plug block (13) is engaged with the first slot (14); the outer circumferential surfaces of the first air duct (11) and the second air duct (12) are both provided with second slots (24); a second plug plate (16) and a third plug plate (17) are slidably connected in the second slot (24); a limiting mechanism is provided on the second plug plate (16); a first sliding block (20) is fixedly connected to the third plug plate (17); an outer sleeve (15) is sleeved on the first air duct (11); a first sliding limiting groove (18) and a second sliding limiting groove (19) are provided on the outer sleeve (15); the limiting mechanism is engaged with the first sliding limiting groove (18); the first sliding block (20) is slidably connected to the second sliding limiting groove (19).

2. The assembled anti-leakage smoke exhaust duct according to claim 1 is characterized in that: The limiting mechanism comprises a second sliding block (22) and a spring (23); a third sliding limiting groove (21) is provided on one side of the second plug plate (16) close to the outer circumferential surface of the outer sleeve (15); one end of the spring (23) is fixedly connected to the third sliding limiting groove (21), and the other end of the spring (23) is fixedly connected to the second sliding block (22).

3. The assembled anti-leakage smoke exhaust duct according to claim 2 is characterized in that: The second plug plate (16) and the second slot (24) are both provided with a sealing groove (25), and a sealing ring (26) is arranged in the sealing groove (25).

4. The assembled anti-leakage smoke exhaust duct according to claim 2 is characterized in that: An end surface of the second sliding block (22) away from the spring (23) is provided with a curved surface.

5. The assembled anti-leakage smoke exhaust duct according to claim 2 is characterized in that: The thickness of the second sliding block (22) is equal to the thickness of the first sliding limit groove (18).

6. The assembled anti-leakage smoke exhaust duct according to claim 1 is characterized in that: The width of the second plug plate (16) is equal to the width of the third plug plate (17), and the width of the second plug plate (16) is equal to the sum of the distance between the inner circular surface of the outer sleeve (15) and the outer circular surface of the first air duct (11) and the depth of the second slot (24).

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