Ventilation pipeline with adjustable length

Abstract

The utility model discloses a ventilating duct with adjustable length, which relates to the technical field of ventilating ducts and comprises a ventilating duct main body, adjusting ducts are symmetrically arranged at two ends of the ventilating duct main body, a mounting bracket is fixedly mounted at the upper end of the ventilating duct main body, and adjusting mechanisms are symmetrically arranged on the outer side of the ventilating duct main body. The same linkage mechanism is arranged on the two front-back corresponding adjusting mechanisms on the outer side of the ventilation pipeline body, and a connecting frame is welded to the ends, away from the ventilation pipeline body, of the adjusting pipelines. By the adoption of the structure, the adjusting pipeline on the ventilation pipeline body can be adjusted and used from the outside through cooperation of the adjusting mechanism and the linkage mechanism, on the basis that adjustment is achieved, smoothness between the ventilation pipeline body and the adjusting pipeline is kept, wind power obstruction is reduced, and the service life of the ventilation pipeline is prolonged. And follow-up maintenance and use of the ventilation pipeline body or the interior of the adjusting pipeline are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ventilation pipeline, especially relate to a ventilation pipeline capable of adjusting length. BACKGROUND

[0002] Ventilation pipeline is the metal or composite pipeline used in the ventilation and air conditioning engineering of industrial and civil buildings, and is a kind of municipal infrastructure to make air circulation and reduce harmful gas concentration.

[0003] Through the retrieval, the China patent with the announcement number CN221034498U discloses a ventilation pipeline capable of adjusting length, which comprises a ventilation pipeline body, a first adjusting pipeline is arranged on one side of the ventilation pipeline body, a second adjusting pipeline is arranged on the other side of the ventilation pipeline body, flanges are arranged on the sides, away from the ventilation pipeline body, of the first adjusting pipeline and the second adjusting pipeline, a drive box is arranged in the ventilation pipeline body, clamping blocks are arranged at both ends of the ventilation pipeline body, and the clamping blocks are fixedly connected with the ventilation pipeline body.

[0004] Although the adjusting structure of the ventilation pipeline in the prior art can realize the adjustment of the ventilation pipeline, the whole adjusting structure is arranged in the ventilation pipeline, which causes certain obstruction to the circulation of ventilation air, and the structure also causes the internal complexity of the ventilation pipeline, which is not conducive to the subsequent maintenance operation of the pipeline. UTILITY MODEL CONTENT

[0005] In view of the problems mentioned in the background art, the utility model aims to provide a ventilation pipeline capable of adjusting length to solve the problems mentioned in the background art.

[0006] The above technical purpose of the utility model is realized by the following technical scheme:

[0007] A ventilation pipeline capable of adjusting length comprises a ventilation pipeline body, adjusting pipelines are symmetrically arranged at both ends of the ventilation pipeline body, an installation support is fixedly installed at the upper end of the ventilation pipeline body, adjusting mechanisms are symmetrically arranged on the outer side of the ventilation pipeline body, the same linkage mechanism is arranged on the two adjusting mechanisms corresponding to the front and back of the outer side of the ventilation pipeline body, a connecting frame is welded at the end, away from the ventilation pipeline body, of the adjusting pipeline, and the adjusting mechanism and the connecting frame are fixedly installed.

[0008] The adjusting mechanism comprises an installation column, the installation column is symmetrically fixedly installed on the front and back sides of the ventilation pipeline body, a sliding groove is formed in the side of the installation column, facing the connecting frame, a screw rod is rotatably connected to the inner side of the sliding groove, an adjusting rod is threadedly connected to one end of the screw rod, the end, away from the installation column, of the adjusting rod is fixedly installed with the connecting frame, and the linkage mechanism is arranged at the end, away from the adjusting rod, of the screw rod.

[0009] The linkage mechanism comprises a mounting cavity and a mounting shell, the mounting shell is fixedly installed on the upper end of the ventilation duct body, the inner side of the mounting shell is rotationally connected with a second linkage rod, one end of the second linkage rod is fixedly installed with an adjusting handle penetrating through one side of the inner wall of the mounting shell, the outer side of the second linkage rod is fixedly installed with a third bevel gear, the inner side of the mounting column is provided with a mounting cavity, the first linkage rod is rotationally connected between the mounting column and the mounting shell, the end of the first linkage rod is fixedly installed with a second bevel gear, the upper end of the first linkage rod is meshingly connected through the second bevel gear and the third bevel gear, the end of the screw rod away from the adjusting rod is fixedly installed with a first bevel gear penetrating into the inner side of the mounting cavity, and the first bevel gear and the second bevel gear at the lower end of the first linkage rod are meshingly connected.

[0010] As a preferred technical scheme, the outer side of the mounting shell is symmetrically welded with a first fixing block, and the mounting shell is fixedly installed through the first fixing block and the ventilation duct body by means of screws.

[0011] As a preferred technical scheme, the outer side of the mounting column is symmetrically welded with a second fixing block, and the mounting column is fixedly installed through the second fixing block and the ventilation duct body by means of screws.

[0012] As a preferred technical scheme, the outer side of the adjusting rod is symmetrically provided with a limiting groove, one end of the adjusting rod is slidingly connected to the inner side of the sliding groove through the limiting groove, and the outer side of the adjusting rod is inlaid with a scale.

[0013] As a preferred technical scheme, the outer side of the connecting frame is symmetrically welded with an assembly block, and the connecting frame is fixedly installed through the assembly block and the end of the adjusting rod away from the mounting column by means of screws.

[0014] As a preferred technical scheme, the shape of the mounting bracket is in the shape of a U-shaped character, and the outer side of the mounting bracket is symmetrically provided with an upper fixing hole and a lower fixing hole.

[0015] In summary, the utility model mainly has the following beneficial effects:

[0016] The adjusting mechanism and the linkage mechanism cooperate to realize the adjustment and use of the adjusting duct on the ventilation duct body from the outside, maintain the smoothness between the ventilation duct body and the adjusting duct on the basis of adjustment, reduce wind resistance, and also facilitate subsequent maintenance and use of the inside of the ventilation duct body or the adjusting duct. Secondly, the adjusting mechanism and the linkage mechanism in the scheme are detachable between the ventilation duct body and the adjusting duct, which also facilitates subsequent disassembly of the adjusting mechanism and the linkage mechanism when any part of the duct is rusted, aged or damaged, and then the new duct is used again, thereby greatly improving the flexibility and practicality of the structure. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the utility model;

[0018] Figure 2 is a structural schematic view of the adjusting mechanism of the utility model;

[0019] Figure 3 is the utility model's Figure 2 enlarged view of A in the middle;

[0020] Figure 4 is a structural schematic view of the inside of the installation shell.

[0021] Reference signs: 1, ventilation duct main body; 2, adjusting duct; 3, mounting bracket; 301, upper fixed hole; 302, lower fixed hole; 4, connecting frame; 5, adjusting mechanism; 501, mounting column; 502, sliding groove; 503, adjusting rod; 504, screw rod; 6, linkage mechanism; 601, mounting cavity; 602, first bevel gear; 603, second bevel gear; 604, first linkage rod; 605, adjusting handle; 606, installation shell; 607, second linkage rod; 608, third bevel gear; 7, first fixed block; 8, second fixed block; 9, assembly block; 10, scale; 11, limiting groove. DETAILED DESCRIPTION

[0022] Reference Figures 1 to 4 , the length-adjustable ventilation duct described in the embodiment comprises: a ventilation duct main body 1, adjusting ducts 2 are symmetrically arranged at both ends of the ventilation duct main body 1, a mounting bracket 3 is fixedly installed at the upper end of the ventilation duct main body 1, adjusting mechanisms 5 are symmetrically arranged on the outer side of the ventilation duct main body 1, the same linkage mechanism 6 is arranged on the two adjusting mechanisms 5 corresponding in front and back on the outer side of the ventilation duct main body 1, a connecting frame 4 is welded at the end of the adjusting duct 2 away from the ventilation duct main body 1, and the adjusting mechanism 5 and the connecting frame 4 are fixedly installed; the inside of the ventilation duct main body 1 of the scheme is also provided with a sealing structure, which is not described in detail here because it is prior art, and of course, the specific can refer to the Chinese patent with the publication number CN221034498U, which discloses a length-adjustable ventilation duct;

[0023] The adjusting mechanism 5 comprises mounting columns 501 symmetrically fixedly installed on the front and rear sides of the ventilation duct body 1, a sliding groove 502 is formed on one side of the mounting column 501 towards the connecting frame 4 side, a screw rod 504 is rotatably connected to the inner side of the sliding groove 502, an adjusting rod 503 is threadedly connected to one end of the screw rod 504, the end of the adjusting rod 503 away from the mounting column 501 is fixedly installed on the connecting frame 4, and a linkage mechanism 6 is arranged at the end of the screw rod 504 away from the adjusting rod 503. By rotating the screw rod 504 in the sliding groove 502 of the mounting column 501, the adjusting rod 503 threadedly connected to the outer side of the screw rod 504 is slidably extended out of the sliding groove 502, so that the connected adjusting duct 2 can be pushed and adjusted in extension on the ventilation duct body 1.

[0024] The linkage mechanism 6 comprises a mounting cavity 601 and a mounting shell 606, the mounting shell 606 is fixedly installed on the upper end of the ventilation duct body 1, a second linkage rod 607 is rotatably connected to the inner side of the mounting shell 606, an adjusting handle 605 is fixedly installed on one end of the second linkage rod 607 penetrating through one side of the inner wall of the mounting shell 606, a third bevel gear 608 is fixedly installed on the outer side of the second linkage rod 607, the mounting cavity 601 is formed on the inner side of the mounting column 501, a first linkage rod 604 is rotatably connected between the mounting column 501 and the mounting shell 606, second bevel gears 603 are fixedly installed on the end portions of the first linkage rod 604, the upper end of the first linkage rod 604 is meshingly connected through the second bevel gear 603 and the third bevel gear 608, a first bevel gear 602 is fixedly installed on the end of the screw rod 504 away from the adjusting rod 503 and extending into the inner side of the mounting cavity 601, the first bevel gear 602 is meshingly connected with the second bevel gear 603 on the lower end of the first linkage rod 604, the second linkage rod 607 is rotated in the inner side of the mounting shell 606 by rotating the adjusting handle 605, so that the third bevel gear 608 on the second linkage rod 607 is synchronously meshingly connected to drive the second bevel gear 603 on the upper end of the first linkage rod 604, and at the same time, the second bevel gear 603 on the lower end of the first linkage rod 604 is meshingly connected to drive the first bevel gear 602 on the end of the screw rod 504, so that the two screw rods 504 on the front and rear sides of the ventilation duct body 1 can be synchronously operated, and the synchronous operation of the screw rods 504 can synchronously push the adjusting rod 503 threadedly connected to the outer side of the screw rod 504 to adjust the use of the adjusting duct 2 on the end of the ventilation duct body 1.

[0025] Reference Figure 2 The outer side of the mounting shell 606 is symmetrically welded with a first fixing block 7, and the mounting shell 606 is fixedly installed on the ventilation duct body 1 through the first fixing block 7 and the ventilation duct body 1 by means of screws. The first fixing block 7 on the outer side of the mounting shell 606 can facilitate the installation of the mounting shell 606 on the upper end of the ventilation duct body 1.

[0026] Reference Figure 2The outer side of the mounting column 501 is symmetrically welded with a second fixing block 8, the mounting column 501 is fixedly installed through the second fixing block 8 and the ventilation duct body 1, and the second fixing block 8 on the mounting column 501 can facilitate the installation and fixation of the mounting column 501 on the front and rear sides of the ventilation duct body 1.

[0027] Reference Figure 3 The outer side of the adjusting rod 503 is symmetrically provided with a limiting groove 11, one end of the adjusting rod 503 is slidably connected to the inner side of the sliding groove 502 through the limiting groove 11, the outer side of the adjusting rod 503 is embedded with a scale 10, the limiting groove 11 on the adjusting rod 503 can be limitedly slid in the inner side of the sliding groove 502, so as to avoid the whole adjusting rod 503 from being pulled out of the sliding groove 502, and the scale 10 on the adjusting rod 503 can be accurately adjusted according to the construction needs.

[0028] Reference Figure 2 The outer side of the connecting frame 4 is symmetrically welded with an assembly block 9, the connecting frame 4 is fixedly installed through the assembly block 9 and the adjusting rod 503 away from one end of the mounting column 501, and the assembly block 9 welded on the connecting frame 4 can facilitate the installation and use of the connecting frame 4 and the adjusting rod 503.

[0029] Reference Figure 2 The mounting bracket 3 is in the shape of a few characters, and the outer side of the mounting bracket 3 is symmetrically provided with an upper fixing hole 301 and a lower fixing hole 302, and the mounting bracket 3 with the upper fixing hole 301 and the lower fixing hole 302 can facilitate the assembly of the mounting bracket 3 on the ventilation duct body 1, and also facilitate the further installation and use of the ventilation duct body 1 through the mounting bracket 3.

[0030] Principle and advantages: the ventilation duct body 1 can be conveniently installed and used through the upper end mounting bracket 3, when the adjusting pipe 2 at the end of the ventilation duct body 1 needs to be adjusted according to the construction condition, the second connecting rod 607 is rotated in the inner side of the mounting shell 606 by rotating the adjusting handle 605, so that the third bevel gear 608 on the second connecting rod 607 is synchronously meshed and driven with the second bevel gear 603 on the upper end of the first connecting rod 604, and the second bevel gear 603 on the lower end of the first connecting rod 604 is meshed and driven with the first bevel gear 602 on one end of the screw rod 504, so that the two screw rods 504 on the front and rear sides of the ventilation duct body 1 can be synchronously operated.

[0031] The adjusting rod 503 connected with the screw rod 504 is slidably extended out of the sliding groove 502 of the mounting column 501, so as to push and adjust the connected adjusting pipe 2 on the ventilation duct body 1.

Claims

1. A length adjustable ventilation duct, characterized in that , comprising: The ventilation pipe body (1) is symmetrically provided with an adjusting pipe (2) at both ends, an installation support (3) is fixedly installed at the upper end of the ventilation pipe body (1), and adjusting mechanisms (5) are symmetrically arranged on the outer side of the ventilation pipe body (1). Corresponding to the two adjusting mechanisms (5) on the front and back of the outer side of the ventilation pipe body (1), a same linkage mechanism (6) is arranged, a connecting frame (4) is welded to the end of the adjusting pipe (2) away from the ventilation pipe body (1), and the adjusting mechanism (5) and the connecting frame (4) are fixedly installed. The adjusting mechanism (5) comprises an installation column (501) which is symmetrically and fixedly installed on the front and back of the ventilation pipe body (1), a sliding groove (502) is formed in one side of the installation column (501) facing the connecting frame (4), a screw rod (504) is rotatably connected to the inner side of the sliding groove (502), an adjusting rod (503) is threadedly connected to one end of the screw rod (504), the other end of the adjusting rod (503) away from the installation column (501) is fixedly installed with the connecting frame (4), and the linkage mechanism (6) is arranged at the end of the screw rod (504) away from the adjusting rod (503).

2. A length adjustable vent duct according to claim 1, wherein: The linkage mechanism (6) comprises an installation cavity (601) and an installation shell (606), the installation shell (606) is fixedly installed on the upper end of the ventilation pipe body (1), a second linkage rod (607) is rotatably connected to the inner side of the installation shell (606), an adjusting handle (605) is fixedly installed on one end of the second linkage rod (607) penetrating through one side of the inner wall of the installation shell (606), a third bevel gear (608) is fixedly installed on the outer side of the second linkage rod (607), an installation cavity (601) is formed in the inner side of the installation column (501), a first linkage rod (604) is rotatably connected between the installation column (501) and the installation shell (606), second bevel gears (603) are fixedly installed at the ends of the first linkage rod (604), the upper end of the first linkage rod (604) is meshingly connected through the second bevel gear (603) and the third bevel gear (608), a first bevel gear (602) is fixedly installed at the end of the screw rod (504) away from the adjusting rod (503) and extending into the inner side of the installation cavity (601), and the first bevel gear (602) and the second bevel gear (603) at the lower end of the first linkage rod (604) are meshingly connected.

3. A length adjustable vent duct according to claim 2, wherein: First fixing blocks (7) are symmetrically welded to the outer side of the installation shell (606), and the installation shell (606) is fixedly installed through the first fixing blocks (7) and the ventilation pipe body (1) by screws.

4. An adjustable length vent duct according to claim 2, wherein: Second fixing blocks (8) are symmetrically welded to the outer side of the installation column (501), and the installation column (501) is fixedly installed through the second fixing blocks (8) and the ventilation pipe body (1) by screws.

5. An adjustable length vent duct according to claim 1, wherein: Limiting grooves (11) are symmetrically formed in the outer side of the adjusting rod (503), one end of the adjusting rod (503) is slidably connected to the inner side of the sliding groove (502) through the limiting groove (11), and a scale (10) is inlaid on the outer side of the adjusting rod (503).

6. An adjustable length vent duct according to claim 1, wherein: The outer side of the connecting frame (4) is symmetrically welded with an assembling block (9), and the connecting frame (4) is fixedly installed away from the one end of the mounting column (501) through the screw penetrating the assembling block (9) and the adjusting rod (503).

7. An adjustable length vent duct according to claim 1, wherein: The shape of the mounting bracket (3) is in the shape of a few characters, and the outer side of the mounting bracket (3) is symmetrically provided with an upper fixing hole (301) and a lower fixing hole (302).

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