Smoke exhaust device for fire engineering

Abstract

The smoke exhaust device comprises a smoke exhaust pipe, the cross section of the smoke exhaust pipe is rectangular, a water spray head is arranged at a smoke outlet of the smoke exhaust pipe, a water supply pipe is installed on the lower portion of the outer surface of the water spray head, and a stop valve used for being connected with a fire hose is installed at the end, away from the water spray head, of the water supply pipe. A supporting rod is installed in the middle of the back face of the water spray head, a transverse rod is fixedly connected to the end, away from the water spray head, of the supporting rod, connecting plates attached to the inner wall of the smoke exhaust pipe are fixedly connected to the two ends of the transverse rod, and a plurality of small holes are evenly formed in the area, covered by the connecting plates, of the smoke exhaust pipe. A plurality of small holes are evenly formed in one side face of the connecting plate, a plurality of screw holes aligned with the small holes are evenly formed in one side face of the connecting plate, and connecting screws in threaded connection with the screw holes are inserted into the small holes. The water spray head has the advantages that the connecting range of the water spray head and the smoke exhaust pipe is enlarged, the structural stability is improved, and the requirement for the structural strength of the smoke exhaust pipe is lowered.

Description

TECHNICAL FIELD

[0001] The utility model relates to a smoke exhaust device of fire engineering belongs to fire engineering field. BACKGROUND

[0002] The smoke exhaust pipe is one of main components in the smoke exhaust system, the water spray head connected with the fire water pipe is installed at the smoke outlet of the smoke exhaust pipe, after the stop valve between the fire water pipe and the water spray head is opened, the fire water is sprayed to the direction far from the smoke exhaust pipe through the water spray head, under the action of the water spray, the pressure difference is formed between the inside and outside of the smoke exhaust pipe, under the action of the pressure difference, the air in the smoke exhaust pipe is exhausted, thereby the flue gas is carried away, the fire water with larger pressure is sprayed from the water spray head, and larger reaction force is generated, the reaction force generated by the water spray of the water spray head acts on the smoke exhaust pipe, and the structural strength requirement of the smoke exhaust pipe is higher. CONTENT

[0003] In view of the defects in the prior art, the utility model aims at providing a smoke exhaust device of fire engineering to solve the problems in the background art, the utility model increases the connection range of the water spray head and the smoke exhaust pipe, improves the stability of the structure, and reduces the requirement on the structural strength of the smoke exhaust pipe.

[0004] In order to realize the above object, the utility model is realized through the following technical scheme: a smoke exhaust device of fire engineering, including the smoke exhaust pipe, the cross section of the smoke exhaust pipe is rectangle, the smoke exhaust pipe is equipped with the water spray head at the smoke outlet, the outer surface lower position of the water spray head is installed with the water supply pipe, the one end of the water supply pipe far from the water spray head is installed with the stop valve for connecting the fire water pipe, the back surface middle position of the water spray head is installed with the support rod, the one end of the support rod far from the water spray head is connected and fixed with the cross bar, the both ends of the cross bar are connected and fixed with the connecting plate that is combined with the inner wall of the smoke exhaust pipe, the area of the smoke exhaust pipe covered by the connecting plate is evenly provided with a plurality of small holes, the one side of the connecting plate is evenly provided with a plurality of screw holes that are aligned with the small holes, the small hole is inserted with the connecting screw that is screwed with the screw hole.

[0005] Further, the both parallel sides of the smoke exhaust pipe are equipped with the U-shaped plate for limiting the head position of the connecting screw, the both ends of the U-shaped plate are in contact with the smoke exhaust pipe, the one side of the U-shaped plate that faces the small hole is evenly provided with a plurality of perforations that are aligned with the small holes, the connecting screw penetrates the channel formed by the perforation and the small hole.

[0006] Further, the water supply pipe is sleeved with the pipe sleeve, the upper end of the pipe sleeve is connected and fixed with the overlapping plate, the upper surface of the overlapping plate is provided with the round mouth that is concentrically arranged with the pipe sleeve, the water supply pipe penetrates the round mouth, one end of the overlapping plate overlaps in the bottom of the smoke exhaust pipe, the outer surface of the pipe sleeve is screwed with the positioning screw for limiting the relative position of the pipe sleeve and the water supply pipe.

[0007] Further, the outer surface of the pipe sleeve is connected and fixed with an inner threaded sleeve communicated with the inner space of the pipe sleeve, and one end of the positioning screw is threadedly connected in the inner threaded sleeve.

[0008] Further, the lower part of the outer surface of the water spray head is provided with a straight threaded cylinder communicated with the inner space of the water spray head, the outer surface of one end of the water supply pipe close to the water spray head is processed with external threads, and the end of the water supply pipe processed with the external threads is threadedly connected in the straight threaded cylinder.

[0009] Further, the end of the smoke exhaust pipe away from the water spray head is sleeved with a connecting edge fixedly connected with the smoke exhaust pipe, and a plurality of fixing holes are uniformly arranged on one side surface of the connecting edge.

[0010] Further, a second strip-shaped opening is formed on one side surface of the supporting rod, and two first strip-shaped openings symmetrically arranged are formed on one side surface of the cross rod.

[0011] The utility model discloses beneficial effect:

[0012] 1, install the smoke exhaust pipe on the outside of the smoke exhaust port of the wall body, connect the stop valve with the fire water pipe, then open the stop valve, the fire water with great pressure in the fire water pipe flows into the water spray head through the water supply pipe, then the fire water sprays out from the water spray head in the form of water mist, according to Bernoulli's principle, the air in the smoke exhaust pipe flows to the water spray head, realizes the smoke exhaust of indoor.

[0013] 2, the structure formed by the supporting rod and the cross rod is inserted in the smoke exhaust pipe, at this time, two connecting plates are respectively attached to two inner walls of the smoke exhaust pipe, the connecting screw is passed through the small hole and is threadedly connected with the screw hole on the connecting plate, the assembly of the connecting plate and the smoke exhaust pipe is completed, thereby the connecting range of the water spray head and the smoke exhaust pipe is increased, the reaction force generated in the water spraying process of the water spray head is avoided to only act on the small range of the smoke exhaust pipe, the stability of the structure is improved, and the requirement on the structural strength of the smoke exhaust pipe is reduced.

[0014] 3, when installing the connecting screw, the U-shaped plate is arranged outside the perforation, then the connecting screw is screwed into the screw hole through the channel formed by the round hole and the small hole, under the support of the U-shaped plate, the connecting screw is partially in the exposed state, when the connecting screw cannot be normally detached due to rust when replacing the water spray head, the connecting screw can be cut off by the gap between the U-shaped plate and the smoke exhaust pipe. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of non-restrictive embodiments with reference to the accompanying drawings:

[0016] Figure 1 It is a structural schematic view of the utility model kind of fire engineering's smoke exhaust device;

[0017] Figure 2Another perspective view of the smoke exhaust device of the fire engineering of the utility model;

[0018] Figure 3 The assembly schematic view of the U-shaped plate and the smoke exhaust pipe in the smoke exhaust device of the fire engineering of the utility model;

[0019] Figure 4 The assembly schematic view of the connecting plate, the cross bar, the supporting rod and the water spray head in the smoke exhaust device of the fire engineering of the utility model;

[0020] Figure 5 The assembly schematic view of the pipe sleeve and the lap joint plate in the smoke exhaust device of the fire engineering of the utility model;

[0021] In the figure: 1-smoke exhaust pipe, 2-connecting plate, 3-cross bar, 4-water spray head, 5-water supply pipe, 6-stop valve, 7-positioning screw, 8-lap joint plate, 9-supporting rod, 10-U-shaped plate, 11-connecting screw, 12-connecting edge, 13-fixing hole, 14-small hole, 15-perforation, 16-straight thread cylinder, 17-first bar-shaped opening, 18-second bar-shaped opening, 19-internal thread sleeve, 20-round opening, 21-pipe sleeve, 22-screw hole. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0023] Please refer to Figure 1 and Figure 2 The utility model provides a technical scheme: a smoke exhaust device of fire engineering, including the smoke exhaust pipe 1 of cross section is rectangle, the end of smoke exhaust pipe 1 away from water spray head 4 is equipped with with the connecting edge 12 of fixed connection of smoke exhaust pipe 1, and the connecting edge 12 one side evenly is equipped with multiple fixing holes 13, makes smoke exhaust pipe 1 with the smoke exhaust port on wall surface relative alignment, then makes the expansion bolt pass through fixing hole 13 and installs in wall body, completes the restriction to the position of smoke exhaust pipe 1.

[0024] Please refer to Figures 1-4The water spray head 4 is provided with a water supply pipe 5 at the lower part of the outer surface, wherein a straight thread cylinder 16 is installed at the lower part of the outer surface of the water spray head 4, and the outer surface of one end of the water supply pipe 5 close to the water spray head 4 is processed with external threads, so that the one end of the water supply pipe 5 is screwed into the straight thread cylinder 16, and the assembly of the water supply pipe 5 and the water spray head 4 is completed. The other end of the water supply pipe 5 is provided with a stop valve 6 for connecting the fire water pipe. The smoke exhaust pipe 1 is installed outside the smoke exhaust port of the wall, so that the stop valve 6 is connected with the fire water pipe. Then, the fire water with high pressure in the fire water pipe flows into the water spray head 4 through the water supply pipe 5, and then the fire water is sprayed from the water spray head 4 in the form of water mist. According to Bernoulli's principle, the air in the smoke exhaust pipe 1 flows to the water spray head 4, so as to realize the exhaust of the indoor smoke.

[0025] Referring to Figure 4 The back surface of the water spray head 4 is provided with a support rod 9, and the second strip-shaped hole 18 is formed in one side surface of the support rod 9, so as to reduce the production material of the support rod 9. The other end of the support rod 9 is connected with a cross rod 3, and the first strip-shaped hole 17 is formed in one side surface of the cross rod 3, so as to reduce the production material of the cross rod 3.

[0026] Referring to Figures 1-4 The two ends of the cross rod 3 are connected with the connecting plates 2 which are in close contact with the inner walls of the smoke exhaust pipe 1. The smoke exhaust pipe 1 is covered by the connecting plates 2, and a plurality of small holes 14 are uniformly formed in the covered area. A plurality of screw holes 22 are uniformly formed in one side surface of the connecting plate 2 and aligned with the small holes 14. The connecting screws 11 are inserted into the small holes 14 and screwed into the screw holes 22, so that the structure formed by the support rod 9 and the cross rod 3 is inserted into the smoke exhaust pipe 1. At this time, the two connecting plates 2 are in close contact with the two inner walls of the smoke exhaust pipe 1, so that the connecting screws 11 are screwed into the screw holes 22 on the connecting plates 2 after passing through the small holes 14. The assembly of the connecting plates 2 and the smoke exhaust pipe 1 is completed, so as to increase the connection range of the water spray head 4 and the smoke exhaust pipe 1, avoid the reaction force generated during the water spraying process of the water spray head 4 acting on a small range of the smoke exhaust pipe 1, improve the stability of the structure, and reduce the requirement for the structural strength of the smoke exhaust pipe 1.

[0027] Referring to Figures 1-4Two parallel sides of the smoke exhaust pipe 1 are provided with U-shaped plates 10 for limiting the position of the head of the connecting screw 11, the two ends of the U-shaped plate 10 are in contact with the smoke exhaust pipe 1, the side of the U-shaped plate 10 facing the small hole 14 is uniformly provided with a plurality of through holes 15 aligned with the small hole 14, the connecting screw 11 penetrates the channel formed by the through hole 15 and the small hole 14, when installing the connecting screw 11, the U-shaped plate 10 is arranged outside the through hole 15, then the connecting screw 11 penetrates the channel formed by the round hole and the small hole 14 and is screwed into the threaded hole 22, under the support of the U-shaped plate 10, the connecting screw 11 is partially exposed, when the connecting screw 11 cannot be normally removed due to rust when replacing the water spray head 4, the connecting screw 11 can be cut off by using the gap between the U-shaped plate 10 and the smoke exhaust pipe 1.

[0028] Referring to Figure 1 , Figure 2 and Figure 5 , the water supply pipe 5 is sleeved with a pipe sleeve 21, the upper end of the pipe sleeve 21 is connected and fixed with a lap plate 8, the upper surface of the lap plate 8 is provided with a round hole 20 concentrically arranged with the pipe sleeve 21, the water supply pipe 5 penetrates the round hole 20, one end of the lap plate 8 is lapped on the inner bottom of the smoke exhaust pipe 1, the outer surface of the pipe sleeve 21 is threadedly connected with a positioning screw 7 for limiting the relative position of the pipe sleeve 21 and the water supply pipe 5, wherein the outer surface of the pipe sleeve 21 is connected and fixed with an internal threaded sleeve 19 communicating with the internal space of the pipe sleeve 21, one end of the positioning screw 7 is threadedly connected in the internal threaded sleeve 19, thereby improving the stability of the connection between the positioning screw 7 and the pipe sleeve 21, after the water spray head 4 is connected with the water supply pipe 5 and the relative position of the water spray head 4 and the smoke exhaust pipe 1 is limited, the position of the pipe sleeve 21 on the water supply pipe 5 is adjusted, one end of the lap plate 8 is lapped on the inner bottom of the smoke exhaust pipe 1, then the positioning screw 7 is tightened, at this time the lap plate 8 realizes the support of the water supply pipe 5, thereby improving the stability of the connection between the water supply pipe 5 and the water spray head 4.

[0029] Although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smoke extraction device for fire engineering comprising a smoke extraction duct (1), characterised in that: The smoke exhaust pipe (1) is rectangular in cross section, the water spray head (4) is arranged at the smoke outlet of the smoke exhaust pipe (1), the water supply pipe (5) is arranged at the lower part of the outer surface of the water spray head (4), the end of the water supply pipe (5) away from the water spray head (4) is provided with a stop valve (6) for connecting the fire water pipe, the middle part of the back surface of the water spray head (4) is provided with a supporting rod (9), the end of the supporting rod (9) away from the water spray head (4) is connected and fixed with a cross rod (3), the two ends of the cross rod (3) are connected and fixed with a connecting plate (2) which is in close contact with the inner wall of the smoke exhaust pipe (1), a plurality of small holes (14) are uniformly arranged in the area of the smoke exhaust pipe (1) covered by the connecting plate (2), a plurality of screw holes (22) are uniformly arranged in one side surface of the connecting plate (2) and are aligned with the small holes (14), and the small holes (14) are inserted with connecting screws (11) which are screwed with the screw holes (22).

2. A smoke extraction device for fire engineering according to claim 1, characterised in that: The two parallel sides of the smoke exhaust pipe (1) are provided with U-shaped plates (10) for limiting the head position of the connecting screws (11), the two ends of the U-shaped plates (10) are in contact with the smoke exhaust pipe (1), and a plurality of perforations (15) are uniformly arranged in the side of the U-shaped plates (10) facing the small holes (14) and are aligned with the small holes (14), and the connecting screws (11) pass through the channels formed by the perforations (15) and the small holes (14).

3. A smoke extraction device for fire engineering according to claim 1, characterized in that: The water supply pipe (5) is sleeved with a pipe sleeve (21), the upper end of the pipe sleeve (21) is connected and fixed with a lap plate (8), the upper surface of the lap plate (8) is provided with a circular opening (20) which is concentrically arranged with the pipe sleeve (21), the water supply pipe (5) penetrates the circular opening (20), one end of the lap plate (8) is lapped on the inner bottom of the smoke exhaust pipe (1), and the outer surface of the pipe sleeve (21) is screwed with a positioning screw (7) for limiting the relative position of the pipe sleeve (21) and the water supply pipe (5).

4. A smoke extraction device for fire engineering according to claim 3, characterised in that: The outer surface of the pipe sleeve (21) is connected and fixed with an internal thread sleeve (19) which is communicated with the internal space of the pipe sleeve (21), and one end of the positioning screw (7) is screwed in the internal thread sleeve (19).

5. A smoke extraction device for fire engineering according to claim 1, characterized in that: The lower part of the outer surface of the water spray head (4) is provided with a straight thread cylinder (16) which is communicated with the internal space of the water spray head (4), the outer surface of the end of the water supply pipe (5) close to the water spray head (4) is processed with external threads, and the end of the water supply pipe (5) processed with external threads is screwed in the straight thread cylinder (16).

6. A smoke extraction device for fire engineering according to claim 1, characterized in that: The end of the smoke exhaust pipe (1) away from the water spray head (4) is sleeved with a connecting edge (12) which is connected and fixed with the smoke exhaust pipe (1), and a plurality of fixing holes (13) are uniformly arranged in one side surface of the connecting edge (12).

7. A smoke extraction device for fire engineering according to claim 1, characterized in that: One side surface of the supporting rod (9) is provided with a second strip-shaped opening (18), and one side surface of the cross rod (3) is provided with two symmetrically arranged first strip-shaped openings (17).

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