CN217503892U - Movable ventilation device - Google Patents
Movable ventilation device Download PDFInfo
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- CN217503892U CN217503892U CN202221089576.6U CN202221089576U CN217503892U CN 217503892 U CN217503892 U CN 217503892U CN 202221089576 U CN202221089576 U CN 202221089576U CN 217503892 U CN217503892 U CN 217503892U
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Abstract
The utility model discloses a movable ventilation device, which comprises an axial flow blower, wherein the outer part of an air outlet pipe of the axial flow blower is connected with a flexible hose through a sealing ring, the sealing ring comprises an upper sealing plate and a lower sealing plate which are detachably connected, the cross section of the upper sealing plate and the cross section of the lower sealing plate are both U-shaped, both sides of the inner wall of the upper sealing plate and the inner wall of the lower sealing plate are both connected with flexible sealing strips, the flexible sealing strips at both sides are arranged at intervals and are respectively positioned at the front side and the rear side of the air outlet pipe, one end of the upper sealing plate and one end of the lower sealing plate are connected with each other through a locking component, and the other end linkage components of the upper sealing plate and the lower sealing plate are connected with each other; one end of the telescopic hose penetrates between the flexible sealing strip and the air outlet pipe and then wraps the air outlet pipe. The utility model discloses can effectively improve the leakproofness of expansion hose after connecting to reduce the noise of axial fan when using.
Description
Technical Field
The utility model relates to a ventilation unit, especially a portable ventilation unit.
Background
At present, before entering a relatively closed underground space such as a pipeline, a well hole and the like, operators need to replace air in the closed space through a ventilation device, so that internal toxic gas is discharged and fresh external air is introduced, and the safety of the operators after entering the space is improved. The existing mobile ventilation device mainly comprises an axial flow blower and a flexible hose, wherein one end of the flexible hose is connected with an air outlet pipe of the axial flow blower, and the other end of the flexible hose extends into a closed space and is inflated, so that the replacement effect is realized; the telescopic hose and the axial flow blower are tightly bound through the rope, namely one end of the telescopic hose is wrapped outside the air outlet pipe, the telescopic hose is closed by the rope, the telescopic hose is nested with the air outlet pipe after being closed, and separation and falling out are prevented.
But because the flexible hose of most fibre cloth material itself does not have elasticity, make its mouth of pipe need be greater than the external diameter of air-out pipe and can realize wrapping up completely, this makes flexible hose can form folding and leave the gap in the outside of air-out pipe after the parcel. Although the existing rope structure can realize the closing function, the sealing effect is not ideal, so that the telescopic hose is difficult to mutually press with the air outlet pipe wall at the folding part and eliminate gaps, air leakage and noise of the air blower are caused when the air blower is used, and the using effect of the air blower is reduced.
Therefore, the conventional mobile ventilation device has the problems of poor sealing performance and high noise.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a portable ventilation unit. The sealing structure can effectively improve the sealing performance of the telescopic hose after connection and reduce the noise of the axial flow blower during use.
The technical scheme of the utility model: a movable ventilation device comprises an axial flow blower, wherein the outer part of an air outlet pipe of the axial flow blower is connected with a flexible hose through a sealing ring, the sealing ring comprises an upper sealing plate and a lower sealing plate which are detachably connected, the cross section of the upper sealing plate and the cross section of the lower sealing plate are both U-shaped, two sides of the inner wall of the upper sealing plate and two sides of the inner wall of the lower sealing plate are both connected with flexible sealing strips, the flexible sealing strips at two sides are arranged at intervals and are respectively positioned at the front side and the rear side of the air outlet pipe, one ends of the upper sealing plate and the lower sealing plate are connected with each other through a locking assembly, and the other ends of the upper sealing plate and the lower sealing plate are connected with each other through a linkage assembly; one end of the telescopic hose penetrates through the flexible sealing strip and the air outlet pipe to wrap the air outlet pipe.
In the above-mentioned mobile ventilation device, two ends of the upper sealing plate are provided with upper mounting plates, two ends of the lower sealing plate are provided with lower mounting plates, and a gap is left between the upper mounting plates and the lower mounting plates; the locking assembly comprises a threaded pin rotatably connected with the upper mounting plate, and one end of the threaded pin penetrates through the lower mounting plate and is connected with a nut.
In the above-mentioned mobile ventilation device, the linkage assembly includes a lantern ring which is rotatably connected with the upper mounting plate, and one end of the lantern ring is connected with a catching groove which is positioned at the bottom of the lower mounting plate in a buckling manner.
In the mobile ventilation device, the fastening plates are arranged at the bottoms of the lower mounting plates close to one ends of the fastening grooves, the fastening grooves are arranged on the fastening plates side by side, and the adjacent fastening grooves are arranged in a vertically staggered manner.
In the above-mentioned mobile ventilation device, the outer end of the fastening plate is provided with a flange.
Compared with the prior art, the utility model can respectively press the telescopic hose from the upper side and the lower side after the telescopic hose wraps the air outlet pipe through the matching of the upper sealing plate, the lower sealing plate and the flexible sealing strip, thereby utilizing the extrusion of the flexible sealing strip to completely press the telescopic hose and the air outlet pipe, avoiding the generation of a gap after the telescopic hose is folded, further effectively improving the sealing property between the axial flow blower and the telescopic hose and reducing the working noise thereof; through the configuration optimization to locking Assembly and linkage subassembly, can also compress tightly upper seal plate and lower sealing plate from both ends respectively to play the stopping function, thereby further form extrusion and spacing to flexible hose, avoid flexible hose's installation gap. Therefore, the utility model discloses can effectively improve the leakproofness of expansion hose after connecting to reduce the noise of axial fan when using.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged view of the line A of FIG. 1;
FIG. 3 is a schematic structural view of the locking assembly;
fig. 4 is a schematic structural diagram of the linkage assembly.
The labels in the figures are: 1-axial flow blower, 2-flexible hose, 3-upper sealing plate, 4-lower sealing plate, 5-flexible sealing strip, 6-upper mounting plate, 7-lower mounting plate, 8-threaded pin, 9-nut, 10-lantern ring, 11-catching groove, 12-fastening plate and 13-flange.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Examples are given. A movable ventilation device comprises an axial flow fan 1, wherein the fan is a conventional portable axial flow fan, the outer part of an air outlet pipe of the axial flow fan 1 is connected with a flexible hose 2 through a sealing ring, the flexible hose 2 is made of conventional glass fiber coated cloth, the sealing ring comprises an upper sealing plate 3 and a lower sealing plate 4 which are detachably connected, the upper sealing plate 3 and the lower sealing plate 4 are semicircular, the cross section of the upper sealing plate 3 and the cross section of the lower sealing plate 4 are U-shaped, two sides of the inner wall of the upper sealing plate 3 and two sides of the lower sealing plate 4 are both connected with flexible sealing strips 5, the flexible sealing strips 5 at the two sides are arranged at intervals and are respectively positioned at the front side and the rear side of the air outlet pipe, one ends of the upper sealing plate 3 and the lower sealing plate 4 are connected with each other through a locking assembly, and the other ends of the upper sealing plate 3 and the lower sealing plate 4 are linked with each other through an assembly; one end of the telescopic hose 2 passes through the flexible sealing strip 5 and the air outlet pipe and then wraps the air outlet pipe.
The two ends of the upper sealing plate 3 are provided with upper mounting plates 6, the two ends of the lower sealing plate 4 are provided with lower mounting plates 7, and a gap is reserved between the upper mounting plates 6 and the lower mounting plates 7; locking Assembly is including rotating the threaded pin 8 who connects upper mounting plate 6, and the appearance of threaded pin 8 is the T font, and the one end of threaded pin 8 passes lower mounting plate 7 and is connected with nut 9, is equipped with the U-shaped groove that supplies threaded pin 8 to insert on lower mounting plate 7.
The linkage assembly comprises a lantern ring 10 which is rotatably connected with the upper mounting plate 6, and one end of the lantern ring 10 is connected with a buckle groove 11 which is positioned at the bottom of the lower mounting plate 7 in a buckling mode.
The bottom of the lower mounting plate 7 close to one end of each buckling groove 11 is provided with a buckling plate 12, each buckling groove 11 is formed in a plurality of side-by-side structures arranged on the corresponding buckling plate 12, and the adjacent buckling grooves 11 are arranged in a vertically staggered mode.
The outer end of the fastening plate 12 is provided with a flange 13.
The two ends of the upper sealing plate 3 can be provided with inward bent metal elastic pieces, and the metal elastic pieces and the flexible sealing strips 5 on the lower sealing plate 4 are arranged in an internally-externally staggered manner and are mutually overlapped.
The utility model discloses a theory of operation: the utility model discloses when the installation, wrap up axial fan 1's play tuber pipe with flexible hose 2's one end earlier, then open upper sealing plate 3 and lower closing plate 4 back and nest from flexible hose 2's upper and lower both sides respectively, make the sealing ring in U-shaped cross-section and the mutual lock in outside that goes out the tuber pipe, and two flexible sealing strip 5 laminate each other with the outer wall both sides that go out the tuber pipe respectively. The upper and lower seal plates 3 and 4 are separated from each other in their locking assembly position when installed and the collar 10 is nested in the rib 13 position to allow the upper and lower seal plates 3 and 4 to be connected to each other and to be able to rotate open. After the upper sealing plate 3 and the lower sealing plate 4 are buckled, an operator rotates the threaded pin 8 to the lower mounting plate 7, and then screws the nut 9 to press the upper mounting plate 6 and the lower mounting plate 7 which are positioned at the same position, so that the sealing ring is extruded at one end and limited. After the nut 9 is screwed in, the operator rotates the lantern ring 10 from the other end, so that the lantern ring 10 is sequentially buckled into the buckling groove 11 on the inner side along the buckling plate 12 after rotating, the other end of the sealing ring is gradually compressed in the buckling process, and the complete compression of the sealing ring is realized when the lantern ring 10 reaches the limit position. When the sealing ring is compressed, the flexible sealing strip 5 on the inner side of the sealing plate can extrude and pre-tighten the telescopic hose 2, so that the sealing performance of the telescopic hose 2 and the axial flow fan 1 at the joint is improved, and the sealing ring is prevented from loosening in the inflating process.
Claims (5)
1. A mobile ventilation device, characterized in that: the air outlet pipe of the axial flow fan comprises an axial flow fan (1), the outer part of an air outlet pipe of the axial flow fan (1) is connected with a flexible hose (2) through a sealing ring, the sealing ring comprises an upper sealing plate (3) and a lower sealing plate (4) which are detachably connected, the cross section shapes of the upper sealing plate (3) and the lower sealing plate (4) are both U-shaped, two sides of the inner wall of the upper sealing plate (3) and the inner wall of the lower sealing plate (4) are both connected with flexible sealing strips (5), the flexible sealing strips (5) at two sides are arranged at intervals and are respectively positioned at the front side and the rear side of the air outlet pipe, one ends of the upper sealing plate (3) and the lower sealing plate (4) are connected with each other through a locking assembly, and the linkage assemblies at the other ends of the upper sealing plate (3) and the lower sealing plate (4) are connected with each other; one end of the telescopic hose (2) passes through the flexible sealing strip (5) and the air outlet pipe and then wraps the air outlet pipe.
2. A mobile ventilation unit according to claim 1, wherein: the two ends of the upper sealing plate (3) are provided with upper mounting plates (6), the two ends of the lower sealing plate (4) are provided with lower mounting plates (7), and a gap is reserved between the upper mounting plates (6) and the lower mounting plates (7); the locking assembly comprises a threaded pin (8) which is rotatably connected with the upper mounting plate (6), and one end of the threaded pin (8) penetrates through the lower mounting plate (7) and is connected with a nut (9).
3. A mobile ventilation unit according to claim 2, wherein: the linkage assembly comprises a lantern ring (10) which is rotatably connected with the upper mounting plate (6), and one end of the lantern ring (10) is connected with a catching groove (11) which is positioned at the bottom of the lower mounting plate (7) in a buckling mode.
4. A mobile ventilation device according to claim 3, wherein: lower mounting panel (7) bottom that is close to catching groove (11) one end is equipped with fastening board (12), catching groove (11) are a plurality of and set up side by side on fastening board (12), are dislocation set from top to bottom between adjacent catching groove (11).
5. A mobile ventilation device according to claim 4, wherein: the outer end of the fastening plate (12) is provided with a flange (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221089576.6U CN217503892U (en) | 2022-05-06 | 2022-05-06 | Movable ventilation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221089576.6U CN217503892U (en) | 2022-05-06 | 2022-05-06 | Movable ventilation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217503892U true CN217503892U (en) | 2022-09-27 |
Family
ID=83351459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221089576.6U Active CN217503892U (en) | 2022-05-06 | 2022-05-06 | Movable ventilation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217503892U (en) |
-
2022
- 2022-05-06 CN CN202221089576.6U patent/CN217503892U/en active Active
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