Smoke exhaust device for building fire engineering

Abstract

The utility model discloses a smoke exhaust device for building fire-fighting engineering, which relates to the field of building fire-fighting engineering, and adopts the technical scheme that the smoke exhaust device comprises a smoke exhaust pipe, a smoke exhaust fan is fixed at one end of the smoke exhaust pipe through a flange screw, a connecting pipe is fixed at the end of the smoke exhaust pipe far away from the smoke exhaust fan through a flange screw, and a smoke inlet mechanism is in threaded connection with the inside of the connecting pipe; the smoke inlet mechanism comprises a smoke inlet head which is in threaded connection with the interior of the connecting pipe, the smoke exhaust pipe is opened by 120-150 degrees, an impurity removal mechanism is slidably connected to the interior of the end, away from the smoke inlet head, of the smoke exhaust pipe, and the impurity removal mechanism comprises a sliding seat which slides in the smoke exhaust pipe; the device can effectively prevent the interior of the smoke exhaust pipe from being blocked, all the structures are detachably connected, and follow-up quick cleaning is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of building fire protection engineering, in particular to a smoke exhaust device used in building fire protection engineering. Background Art

[0002] Smoke exhaust in building fire protection projects is extremely necessary. This is mainly reflected in the fact that during a fire, smoke and toxic gases can affect people's vision and breathing, posing a serious threat to their escape. The smoke exhaust system can exhaust large amounts of smoke and harmful gases to ensure the safety of people's escape. Therefore, smoke exhaust in building fire protection projects is an important measure to protect people's lives and reduce the damage caused by fire to buildings.

[0003] The current Chinese patent publication number is: CN216048184U, an automatic smoke exhaust device for building electrical fire protection engineering, including a smoke exhaust pipe, the smoke exhaust pipe is hoisted on the roof of the house, one end of the smoke exhaust pipe is enclosed in the house, and the other end is connected to the external space of the building. A suction mechanism is provided inside the smoke exhaust pipe, and the suction mechanism and the smoke exhaust pipe are laid in the same area. A plurality of smoke extraction ports and ventilation ports are respectively penetrated by the top and bottom of the smoke exhaust pipe, and an opening and closing mechanism is provided in the smoke extraction port and the ventilation port, and the opening and closing mechanism is connected with the suction mechanism.

[0004] However, the device still has some shortcomings. For example, when exhausting smoke, the device may allow some dust, impurities, cloth, etc. to enter the exhaust pipe from the smoke outlet, thereby causing the device to be blocked and affecting the exhaust effect. Utility Model Content

[0005] The purpose of the utility model is to provide a smoke exhaust device for building fire protection engineering; the device can effectively avoid blockage inside the smoke exhaust pipe, and the various structures are detachably connected to facilitate subsequent quick cleaning.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A smoke exhaust device for building fire protection engineering comprises a smoke exhaust pipe, a smoke exhaust fan being fixed to a flange screw at one end of the smoke exhaust pipe, a connecting pipe being fixed to a flange screw at the end of the smoke exhaust pipe away from the smoke exhaust fan, a smoke inlet mechanism being threadedly connected to the inside of the connecting pipe, the smoke inlet mechanism comprising a smoke inlet head threadedly connected to the inside of the connecting pipe, the smoke exhaust pipe being opened at 120°-150°, a debris removal mechanism being slidably connected to the inside of the end of the smoke exhaust pipe away from the smoke inlet head, the debris removal mechanism comprising a sliding seat sliding inside the smoke exhaust pipe.

[0008] Furthermore, the cigarette inlet head is provided with a conical inlet port away from the connecting pipe end, and an annular connecting plate is fixed to the cigarette inlet head near the connecting pipe end. The annular connecting plate and the connecting pipe are threadedly connected, and a conical guide port fixed to the end face of the cigarette inlet head is provided inside the conical connecting plate, and a collection area is formed between the conical guide port and the annular connecting plate.

[0009] Furthermore, the side surface of the tapered guide opening is provided with obliquely arranged ventilation holes, and a plurality of ventilation holes are provided along the circumference of the tapered guide opening.

[0010] Furthermore, an annular filter is fixed near the end of the smoke exhaust pipe, and a baffle is fixed inside the annular filter. The baffle completely covers the conical guide opening, and there is a gap between the baffle and the conical guide opening.

[0011] Furthermore, sliding wheels are rotatably connected on both sides of the sliding seat, and the sliding wheels slide along the inner wall of the smoke exhaust pipe. A sliding groove for the sliding wheels is provided on the inner wall of the smoke exhaust pipe. A wedge plate is provided at the end of the sliding seat away from the sliding wheel, and the wedge plate abuts against the inner wall of the smoke exhaust pipe away from the end of the sliding seat.

[0012] In summary, the beneficial technical effects of the present invention are:

[0013] 1. Install a connecting pipe on the exhaust pipe, and install a cigarette inlet head on the internal thread of the connecting pipe. After the smoke enters the cigarette inlet head, it can cooperate with the annular filter and baffle structure to collect the smoke and dust into the collection area. After the cigarette inlet head is disassembled, the dust inside can be cleaned, thereby avoiding excessive smoke and dust entering the exhaust pipe and reducing the occurrence of smoke pipe blockage;

[0014] 2. A sliding seat is also provided inside the exhaust pipe. The movement of the sliding seat can further clean the interior of the exhaust pipe and further avoid blockage of the exhaust pipe. When no smoke is introduced into the exhaust pipe, the sliding seat can automatically reset itself under the action of its own gravity due to the inclined setting of the exhaust pipe, so as to facilitate further movement.

[0015] 3. The large radius end of the conical inlet of the cigarette inlet head is located at the bottom of the cigarette inlet head, so that the smoke entering the cigarette inlet head can be compressed, thereby increasing its speed of entering the exhaust pipe and directly discharging the fine smoke dust carried by it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute part of the specification, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a structural schematic diagram of a smoke exhaust device used in building fire protection engineering according to this embodiment;

[0018] Figure 2This is a smoke exhaust device for building fire protection engineering. Figure 1 Schematic side view of

[0019] Figure 3 This is a smoke exhaust device for building fire protection engineering. Figure 2 AA line cross-sectional view;

[0020] Figure 4 This is a smoke exhaust device for building fire protection engineering. Figure 2 Schematic diagram of the cross-section along the midline BB.

[0021] In the figure, 1. exhaust pipe; 2. exhaust fan; 3. connecting pipe; 4. smoke inlet head; 5. sliding seat; 6. conical inlet port; 7. annular connecting plate; 8. conical guide port; 9. collecting area; 10. vent; 11. annular filter; 12. baffle; 13. sliding wheel; 14. slide chute; 15. wedge plate. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings.

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 The utility model provides a technical solution: a smoke exhaust device for building fire protection engineering, comprising a smoke exhaust pipe 1, a smoke exhaust fan 2 is fixed to a flange screw at one end of the smoke exhaust pipe 1, a connecting pipe 3 is fixed to the flange screw at the end of the smoke exhaust pipe 1 away from the smoke exhaust fan 2, a smoke inlet mechanism is threadedly connected to the inside of the connecting pipe 3, the smoke inlet mechanism includes a smoke inlet head 4 threadedly connected to the inside of the connecting pipe 3, the smoke exhaust pipe 1 is opened at 120°-150°, and a debris removal mechanism is slidably connected to the inside of the end of the smoke exhaust pipe 1 away from the smoke inlet head 4, and the debris removal mechanism includes a sliding seat 5 that slides inside the smoke exhaust pipe 1.

[0025] A conical inlet port 6 is provided at the end of the cigarette inlet head 4 away from the connecting pipe 3, and an annular connecting plate 7 is fixed to the end of the cigarette inlet head 4 close to the connecting pipe 3. The annular connecting plate 7 is threadedly connected to the connecting pipe 3, and a conical guide port 8 fixed to the end face of the cigarette inlet head 4 is provided inside the conical connecting plate. A collecting area 9 is formed between the conical guide port 8 and the annular connecting plate 7. The large radius end of the conical inlet port 6 is located at the bottom of the cigarette inlet head 4, so that the smoke entering the inside of the cigarette inlet head 4 can be compressed, thereby increasing its rate of entering the smoke exhaust pipe 1 and directly discharging the fine smoke dust carried therewith.

[0026] At the same time, an inclined vent hole 10 is provided on the side of the tapered guide port 8. There are several vent holes 10 along the circumferential direction of the tapered guide port 8, and an annular filter 11 is fixed to the end of the smoke exhaust pipe 1 near the connecting pipe 3. A baffle 12 is fixed inside the annular filter 11. The baffle 12 completely covers the tapered guide port 8. There is a gap between the baffle 12 and the tapered guide port 8. After the smoke enters the inside of the smoke inlet head 4, since the baffle 12 covers the tapered guide port 8, the smoke is separated by the baffle 12 and enters the inside of the smoke exhaust pipe 1 along the annular filter 11 around it, and the larger smoke dust in the smoke is It is blocked by the annular filter 11 and falls into the collection area 9. At the same time, a plurality of ventilation holes 10 are arranged on the side of the conical guide port 8. In this embodiment, the aperture of the ventilation hole 10 is consistent with the aperture of the annular filter 11. After the smoke enters at an accelerated speed, it will carry the residual gas in the collection area 9 along the ventilation hole 10 into the conical guide port 8, thereby forming a smaller negative pressure environment inside the collection area 9, and then the smoke and dust inside the collection area 9 can be tightly attached to the outer side of the conical guide port 8, avoiding the chaos of the smoke and dust inside the collection area 9 after the smoke and dust enter, thereby improving the smoothness of smoke discharge.

[0027] A sliding seat 5 is further provided inside the smoke exhaust pipe 1, wherein sliding wheels 13 are rotatably connected on both sides of the sliding seat 5, and the sliding wheel 13 slides along the inner wall of the smoke exhaust pipe 1. A sliding groove 14 for the sliding wheel 13 to slide is provided on the inner wall of the smoke exhaust pipe 1, and a wedge plate 15 is provided at the end of the sliding seat 5 away from the sliding wheel 13. The end of the wedge plate 15 away from the sliding seat 5 abuts against the inner wall of the smoke exhaust pipe 1. After smoke enters the smoke exhaust pipe 1, the sliding seat 5 can move with the smoke. The rotation of the sliding wheel 13 can reduce the friction between the sliding seat 5 and the smoke exhaust pipe 1. At the same time, when the sliding seat 5 moves, the wedge plate 15 at its front end abuts against the inner wall of the smoke exhaust pipe 1 and moves, scraping off the smoke and dust on the inner wall of the smoke exhaust pipe 1 and carrying it out with the smoke to avoid blockage inside the smoke exhaust pipe 1.

[0028] The working principle of the present invention is as follows: a connecting pipe 3 is installed on the smoke exhaust pipe 1, and a cigarette inlet head 4 is threadedly installed inside the connecting pipe 3. After the smoke enters, the cigarette inlet head 4 can cooperate with the annular filter 11 and the baffle 12 structure to collect the smoke and dust into the collection area 9. Then, after the cigarette inlet head 4 is disassembled, the dust inside can be cleaned, thereby avoiding excessive entry of smoke and dust into the smoke exhaust pipe 1 and reducing the occurrence of blockage of the smoke exhaust pipe 1; at the same time, a sliding seat 5 is also provided inside the smoke exhaust pipe 1, and the movement of the sliding seat 5 can further clean the interior of the smoke exhaust pipe 1 and further avoid blockage of the smoke exhaust pipe 1. When no smoke is introduced into the sliding seat 5, since the smoke exhaust pipe 1 is tilted, its opening and closing angle is 120°-150°, and then the sliding seat 5 can automatically reset under the action of its own gravity to facilitate movement again.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A smoke exhaust device for building fire protection engineering, characterized in that: The device comprises a smoke exhaust pipe (1), a smoke exhaust fan (2) is fixed to one end of the smoke exhaust pipe (1) by a flange screw, a connecting pipe (3) is fixed to the end of the smoke exhaust pipe (1) away from the smoke exhaust fan (2) by a flange screw, a smoke inlet mechanism is connected to the inside of the connecting pipe (3) by a thread, the smoke inlet mechanism comprises a smoke inlet head (4) threadedly connected to the inside of the connecting pipe (3), the smoke exhaust pipe (1) is opened at 120°-150°, a debris removal mechanism is slidably connected to the inside of the end of the smoke exhaust pipe (1) away from the smoke inlet head (4), and the debris removal mechanism comprises a sliding seat (5) sliding inside the smoke exhaust pipe (1).

2. A smoke exhaust device for building fire protection engineering according to claim 1, characterized in that: The cigarette inlet head (4) is provided with a conical inlet opening (6) at the end away from the connecting pipe (3), and an annular connecting plate (7) is fixed to the end of the cigarette inlet head (4) close to the connecting pipe (3). The annular connecting plate (7) and the connecting pipe (3) are threadedly connected. A conical guide opening (8) fixed to the end face of the cigarette inlet head (4) is provided inside the annular connecting plate, and a collecting area (9) is formed between the conical guide opening (8) and the annular connecting plate (7).

3. A smoke exhaust device for building fire protection engineering according to claim 2, characterized in that: The side surface of the tapered guide opening (8) is provided with an inclined vent hole (10), and a plurality of vent holes (10) are provided along the circumferential direction of the tapered guide opening (8).

4. The smoke exhaust device for building fire protection engineering according to claim 2, characterized in that: An annular filter (11) is fixed to the end of the smoke exhaust pipe (1) near the connecting pipe (3), a baffle (12) is fixed inside the annular filter (11), the baffle (12) completely covers the conical guide opening (8), and a gap exists between the baffle (12) and the conical guide opening (8).

5. The smoke exhaust device for building fire protection engineering according to claim 1, characterized in that: The sliding seat (5) is rotatably connected to sliding wheels (13) on both sides. The sliding wheels (13) slide along the inner wall of the smoke exhaust pipe (1). A sliding groove (14) for the sliding wheels (13) to slide is provided on the inner wall of the smoke exhaust pipe (1). The end of the sliding seat (5) away from the sliding wheels (13) is provided with a wedge plate (15). The end of the wedge plate (15) away from the sliding seat (5) contacts the inner wall of the smoke exhaust pipe (1).

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