CN220515001U - Smoke discharging device in limited space - Google Patents

Abstract

The utility model discloses a smoke exhaust device in a limited space, which comprises a dust hood, an exhaust mechanism and a telescopic smoke exhaust pipeline, wherein the dust hood is in a horn shape, the small end of the dust hood is connected with the smoke exhaust pipeline, the large end of the dust hood is provided with a mounting pipe, one end of the mounting pipe, which is far away from the dust hood, is provided with an inlet cover, the exhaust mechanism comprises a mounting frame and an exhaust fan arranged on the mounting frame, the inner wall of the mounting pipe is provided with at least three circumferential clamping grooves which are arranged at intervals around the center, the positions of the mounting frame, which correspond to the circumferential clamping grooves, are respectively provided with clamping parts, each clamping part is respectively clamped in each circumferential clamping groove, each circumference Xiang Kacao is provided with an inlet and an outlet for the clamping parts to enter and exit at the same side in the circumferential direction, and an air passing channel penetrates through the mounting frame. The smoke exhaust device in the limited space has simple structure and the exhaust fan is convenient to disassemble and assemble.

Description

Smoke discharging device in limited space

Technical Field

The utility model relates to the technical field of smoke discharging machinery, in particular to a smoke discharging device in a limited space.

Background

The welding fume extractor in limited space is one device for eliminating harmful gas and fume during welding operation in narrow space. The technology of welding fume extractor in the current limited space mainly includes: fume extractor based on mechanical ventilation principle and fume extractor based on chemisorption principle. The mechanical ventilation device is used for exhausting harmful gas out of a room, is suitable for places with larger space, is difficult to effectively ventilate in a limited space, and has the advantages of concentrated smoke during welding and better mechanical ventilation and smoke exhaust device effect. The chemical adsorbent is used for adsorbing harmful gas, and clean air is sent into the room through the ventilation equipment, so that the chemical adsorbent is applicable to a limited space, but the adsorbent needs to be replaced regularly, and the cost is high.

The existing smoke exhaust device with the application number of 201721184849.4 comprises an exhaust fan and a smoke exhaust pipe, wherein the smoke exhaust pipe is communicated with the upper part of the exhaust fan, the exhaust fan is supported above an extrusion head of a plastic extruder by a frame, the lower part of the exhaust fan is fixedly connected with a exhaust hood, and the bottom of the exhaust hood is fixedly connected with a smoke alarm; a pneumatic butterfly valve is arranged above the exhaust fan on the smoke exhaust pipe; the smoke alarm is connected with a motor switch of the exhaust fan and a valve of the pneumatic butterfly valve through a control cabinet. The exhaust fan is supported above the extrusion head of the plastic extruder by the frame, is generally fixed in the smoke exhaust pipe by bolts or welding, and is inconvenient to assemble and disassemble. And the smoke exhaust pipe where the exhaust fan is arranged is cylindrical, so that the air collecting effect is poor.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the smoke exhaust device in the limited space, which has a simple structure and is convenient to disassemble and assemble.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a fume extractor in limited space, includes dust cage, exhaust mechanism and scalable exhaust duct, the dust cage is loudspeaker shape, the tip and the exhaust duct of dust cage are connected, the large end of dust cage is equipped with the installation tube, the one end that the dust cage was kept away from to the installation tube is equipped with the inlet cover, exhaust mechanism includes the mounting bracket and locates the exhaust fan on the mounting bracket, be equipped with at least three circumference draw-in groove around central interval arrangement on the inner wall of installation tube, all be equipped with joint portion on the position that the mounting bracket corresponds with each circumference draw-in groove, each in each joint portion card locates each circumference draw-in groove respectively, each circumference draw-in groove all is equipped with the exit that supplies joint portion business turn over in the same side of circumference, it has the wind passageway to run through in the mounting bracket.

As a further improvement of the above technical scheme:

the circumferential clamping groove is Z-shaped.

The circumference draw-in groove is last to be equipped with locking screw, be equipped with spacing hole on the mounting bracket, locking screw inserts and locates in the spacing hole.

The electric wire that is connected with the exhaust fan wears to be equipped with in the mounting bracket, be equipped with switch on the outer wall of installation tube, the electric wire is connected with switch.

The power switch is detachably connected with the mounting tube, and the power switch is detachably connected with the electric wire.

The inner wall surface of the installation tube is a cylindrical surface.

The mounting frame is a cross, and each clamping part is distributed at the outer end of the cross.

The mounting frame is made of cast iron.

The inlet cover is loudspeaker-shaped, the tip of loudspeaker-shaped is connected with the installation pipe.

The material of the inlet cover is rubber.

Compared with the prior art, the utility model has the advantages that:

when the exhaust mechanism is disassembled, the mounting frame rotates around the central shaft of the mounting pipe, the clamping part is moved out from the corresponding inlet and outlet, and the exhaust mechanism is taken out integrally. During installation, the installation frame is inserted into the installation pipe, so that each clamping part is aligned with each inlet and outlet, and then the installation frame is rotated, so that each clamping part is clamped into the corresponding inlet and outlet. The smoke exhaust device in the limited space has the advantages of simple structure and convenient disassembly and assembly of the exhaust fan.

Drawings

Fig. 1 is a schematic perspective view of a smoke exhaust device in a limited space.

Fig. 2 is a schematic cross-sectional structure of the smoke exhaust device in the limited space of the utility model.

Fig. 3 is a schematic view of a partial sectional structure of the smoke exhaust apparatus in a limited space of the present utility model.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is a schematic structural view of a circumferential clamping groove of the smoke exhaust device in the limited space.

The reference numerals in the drawings denote:

1. a dust collection cover; 2. an exhaust mechanism; 21. a mounting frame; 211. a clamping part; 212. a wind passage; 22. an exhaust fan; 23. a limiting hole; 3. a smoke exhaust duct; 4. installing a pipe; 41. circumferential clamping grooves; 42. an inlet and an outlet; 43. a locking screw; 5. an inlet cover; 6. an electric wire; 7. and a power switch.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the specific examples.

In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Fig. 1 to 5 show an embodiment of a smoke exhaust device in a limited space of the present utility model, which comprises a dust hood 1, an exhaust mechanism 2 and a telescopic smoke exhaust pipe 3, wherein the dust hood 1 is in a horn shape, a small end of the dust hood 1 is connected with the smoke exhaust pipe 3, a mounting tube 4 is arranged at a large end of the dust hood 1, an inlet cover 5 is arranged at one end of the mounting tube 4 far away from the dust hood 1, the exhaust mechanism 2 comprises a mounting frame 21 and an exhaust fan 22 arranged on the mounting frame 21, at least three circumferential clamping grooves 41 which are arranged at intervals around the center are arranged on the inner wall of the mounting tube 4, clamping parts 211 are respectively clamped in the circumferential clamping grooves 41 at positions corresponding to the circumferential clamping grooves 41, an inlet and an outlet 42 for the clamping parts 211 to enter and exit are arranged at the same side of the circumferential direction of each circumferential clamping groove 41, and a wind passing channel 212 penetrates through the mounting frame 21.

When the exhaust mechanism 2 is detached, the mounting frame 21 is rotated about the central axis of the mounting tube 4, the engaging portion 211 is moved out of the corresponding inlet/outlet 42, and the exhaust mechanism 2 is taken out as a whole. In the mounting, the mounting bracket 21 is inserted into the mounting tube 4 so that each of the engaging portions 211 is aligned with each of the inlet and outlet openings 42, and the mounting bracket 21 is rotated so that each of the engaging portions 211 engages with the corresponding inlet and outlet opening 42. The smoke exhaust device in the limited space has simple structure and the exhaust fan 22 is convenient to disassemble and assemble.

In the present embodiment, the circumferential clamping groove 41 has a zigzag shape. As shown in fig. 5, the inner wall of the installation tube 4 is provided with an installation portion, the circumferential clamping groove 41 is formed in the installation portion, the inlet and outlet 42 is formed in the outer end of the circumferential clamping groove 41, the inner end of the circumferential clamping groove 41 is blocked, after the installation is completed, the installation frame 21 is in a horizontal shape, the zigzag inlet section is a horizontal section, the inner section is also a horizontal section, and a vertical section is arranged between the zigzag inlet section and the inner section. The clamping portion 211 enters from the inlet and outlet 42, rotates through the inlet section, descends into the vertical section, and rotates into the inner section. The zigzag circumferential clamping groove 41 prevents the mounting frame 21 from falling off through the inner Duan Xianwei clamping part 211, and is convenient to detach.

In this embodiment, as shown in fig. 4, a locking screw 43 is provided on the circumferential clamping groove 41, a limiting hole 23 is provided on the mounting frame 21, and the locking screw 43 is inserted into the limiting hole 23. Under the locking action of the locking screw 43, the mounting frame 21 is ensured not to fall off, and the safety is high.

In this embodiment, the installation rack 21 is penetrated with an electric wire 6 connected with the exhaust fan 22, the outer wall of the installation tube 4 is provided with a power switch 7, and the electric wire 6 is connected with the power switch 7. The exhaust fan 22 can be turned on and off by the power switch 7.

In this embodiment, the power switch 7 is detachably connected to the mounting tube 4, and the power switch 7 is detachably connected to the electric wire 6. In this way, before the exhaust mechanism 2 is disassembled, the power switch 7 can be disassembled first, the power switch 7 and the electric wire 6 can be separated, and of course, the power switch 7 and the electric wire 6 can be directly separated, and then the exhaust mechanism 2 can be disassembled.

In this embodiment, the inner wall surface of the mounting tube 4 is a cylindrical surface.

In this embodiment, the mounting rack 21 is a cross, and each clamping portion 211 is distributed at the outer end of the cross. Simple structure and convenient processing. Preferably, the mounting bracket 21 is cast iron.

In this embodiment, the inlet cover 5 is in the shape of a horn, and the small end of the horn is connected with the mounting tube 4. The horn-shaped inlet cover 5 receives air in front of the exhaust fan 22, and the horn-shaped dust collecting cover 1 receives air behind the exhaust fan 22, so that a good air receiving effect is achieved.

Preferably, the inlet cover 5 is made of rubber.

While the utility model has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims (10)

1. The utility model provides a smoke exhaust device in limited space, includes dust cage (1), exhaust mechanism (2) and scalable exhaust flue (3), its characterized in that: the dust hood (1) is loudspeaker-shaped, the tip of dust hood (1) is connected with exhaust flue (3), the large end of dust hood (1) is equipped with mounting tube (4), one end that dust hood (1) was kept away from to mounting tube (4) is equipped with inlet cover (5), exhaust mechanism (2) include mounting bracket (21) and locate exhaust fan (22) on mounting bracket (21), be equipped with at least three circumference draw-in groove (41) around central interval arrangement on the inner wall of mounting tube (4), all be equipped with joint portion (211) on the position that mounting bracket (21) corresponds with each week Xiang Kacao (41), each joint portion (211) are blocked respectively and are located in each week Xiang Kacao (41), each circumference draw-in groove (41) all are equipped with in the same side of circumference and supply inlet and outlet (42) of joint portion (211), it has wind passageway (212) to run through in mounting bracket (21).

2. The smoke evacuation device in a confined space according to claim 1, wherein: the circumferential clamping groove (41) is Z-shaped.

3. The smoke evacuation device in a confined space according to claim 1, wherein: the circumference draw-in groove (41) is last to be equipped with locking screw (43), be equipped with spacing hole (23) on mounting bracket (21), locking screw (43) are inserted and are located in spacing hole (23).

4. The smoke evacuation device in a confined space according to claim 1, wherein: the electric wire (6) connected with the exhaust fan (22) is arranged in the mounting frame (21) in a penetrating mode, the outer wall of the mounting pipe (4) is provided with a power switch (7), and the electric wire (6) is connected with the power switch (7).

5. The smoke evacuation device in a confined space of claim 4, wherein: the power switch (7) is detachably connected with the mounting pipe (4), and the power switch (7) is detachably connected with the electric wire (6).

6. The smoke evacuation device in a confined space according to claim 1, wherein: the inner wall surface of the installation tube (4) is a cylindrical surface.

7. The smoke evacuation device in a confined space according to claim 1, wherein: the mounting frame (21) is a cross, and the clamping portions (211) are distributed at the outer end of the cross.

8. The smoke evacuation device in a confined space of claim 7, wherein: the mounting frame (21) is made of cast iron.

9. The smoke evacuation device in a confined space as claimed in any one of claims 1 to 8, wherein: the inlet cover (5) is in a horn shape, and the small end of the horn shape is connected with the mounting tube (4).

10. The smoke evacuation device in a confined space as claimed in claim 9, wherein: the material of the inlet cover (5) is rubber.