Fire-fighting smoke exhaust equipment

Abstract

The utility model provides a fire-fighting smoke exhaust device which comprises a smoke exhaust cylinder, a first motor is installed in the smoke exhaust cylinder, a second motor is arranged under the smoke exhaust cylinder, a lower belt pulley is installed on an output shaft of the second motor, an upper belt pulley is installed on an output shaft of the first motor, and the lower belt pulley is connected with the upper belt pulley. The upper belt wheel and the lower belt wheel are connected through a transmission belt, a bottom plate is installed at the bottom of the second motor, two rectangular pipes are symmetrically installed on the upper surface of the bottom plate, hanging plates are inserted into the rectangular pipes, the upper ends of the hanging plates are connected with a smoke discharging cylinder, and the lower ends of the hanging plates are fixedly connected with limiting blocks. The lower portions of the opposite faces of the two rectangular pipes are both provided with vertically-arranged strip-shaped grooves, and the upper portions of the opposite faces of the two rectangular pipes are both in threaded connection with positioning screws. And the occupied plane area is reduced while the cost is reduced.

Description

Technical Field

[0001] This utility model is a fire-fighting smoke exhaust device, belonging to the field of fire protection facilities. Background Technology

[0002] Fire-fighting smoke extraction equipment is a crucial component of a building's fire safety system. Its purpose is to rapidly remove smoke and harmful gases generated during a fire, ensure the visibility of evacuation routes, and reduce the harm to people and property. Smoke extraction fans are one of the commonly used fire-fighting smoke extraction facilities. Each smoke extraction fan is equipped with a motor. To prevent motor failure that could cause the fan to malfunction, two smoke extraction fans need to be installed in a given area. Both fans require smoke extraction ducts, which increases the floor space occupied by the additional ductwork and also raises costs due to the need for two separate fans. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fire smoke exhaust device to solve the problems mentioned in the background technology. This utility model realizes that it does not need to be equipped with two complete smoke exhaust fans when it has a backup function, thereby reducing costs and reducing the space occupied.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fire-fighting smoke exhaust device includes a smoke exhaust stack. A first motor is installed inside the smoke exhaust stack. Multiple fan blades are equidistantly mounted in a ring on the output shaft of the first motor. A second motor is located directly below the smoke exhaust stack. A lower pulley is mounted on the output shaft of the second motor, and an upper pulley is mounted on the output shaft of the first motor. The upper and lower pulleys are connected by a transmission belt. Two through-holes are provided on the lower part of the outer surface of the smoke exhaust stack to allow the transmission belt to pass through. A base plate is installed at the bottom of the second motor. Two rectangular tubes are symmetrically mounted on the upper surface of the base plate. A hanging plate is inserted inside the rectangular tube. The upper end of the hanging plate is connected to the smoke exhaust stack. A limit block is fixedly connected to the lower end of the hanging plate. Vertically arranged strip grooves are provided on the lower part of the opposite surfaces of the two rectangular tubes. The limit block is slidably installed in the strip groove. Positioning screws are threadedly connected to the upper part of the opposite surfaces of the two rectangular tubes.

[0005] Furthermore, a horizontal hole is provided on the upper part of the opposite side of each of the two rectangular tubes. A threaded sleeve is provided on the outside of the horizontal hole and is arranged concentrically with the horizontal hole. One end of the threaded sleeve is connected and fixed to the rectangular tube. The positioning screw used to limit the relative position of the rectangular tube and the hanging plate is threadedly connected in the threaded sleeve.

[0006] Furthermore, a positioning hole that matches the horizontal hole is provided on one side of the hanging plate, and one end of the positioning screw extends into the positioning hole.

[0007] Furthermore, the exhaust pipe is fitted with an upper semicircular plate and a lower semicircular plate. The two ends of the upper semicircular plate are connected to the two ends of the lower semicircular plate respectively by fasteners. The upper end of the hanging plate is connected and fixed to the lower semicircular plate.

[0008] Furthermore, a U-shaped plate is installed at the bottom of the first motor, and an L-shaped plate is installed on each of the two parallel sides of the U-shaped plate. The end of the L-shaped plate away from the U-shaped plate is connected and fixed to the exhaust pipe.

[0009] Furthermore, a first connecting ring is fitted onto one end of the exhaust pipe and fixed thereto, and a second connecting ring is installed on the end of the exhaust pipe away from the first connecting ring. Both the first connecting ring and the second connecting ring have multiple small holes equidistantly spaced in a ring shape.

[0010] Furthermore, a reinforcing rib is fixedly connected to the lower end of the rectangular tube. The reinforcing rib has a triangular structure and is fixedly connected to the base plate.

[0011] The beneficial effects of this utility model are:

[0012] 1. A second motor is installed directly below the exhaust pipe, and the output shafts of the first and second motors are connected by a transmission belt. When the first motor fails to work properly, the positioning screw is disengaged from the positioning hole. Under the gravity of the second motor, the length of the hanging plate inside the rectangular tube is shortened. At this time, the limit block is at the top of the strip groove, so that the transmission belt is taut. This facilitates normal smoke exhaust when the second motor is started. Compared with two complete exhaust fans, this method eliminates the need for two complete exhaust fans when a backup function is available, reducing costs and minimizing the space occupied.

[0013] 2. Install the hanging plate on the lower semicircular plate, and then install the structure formed by the lower and upper semicircular plates on the exhaust pipe. This increases the connection range between the hanging plate and the exhaust pipe, improves the stability of the structure, and simultaneously realizes the assembly of the hanging plate and the exhaust pipe. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a structural schematic diagram of a fire-fighting smoke exhaust device according to the present invention;

[0016] Figure 2 This is a perspective view of a fire-fighting smoke exhaust device according to this utility model;

[0017] Figure 3This is a schematic diagram of the assembly of the first motor and the second motor in a fire-fighting smoke exhaust device according to the present invention;

[0018] Figure 4 This is an assembly diagram of the lower semicircular plate, hanging plate, rectangular tube and base plate in a fire smoke exhaust device of this utility model;

[0019] Figure 5 This is a perspective view of the smoke exhaust stack in a fire-fighting smoke exhaust device according to this utility model;

[0020] In the diagram: 1-exhaust pipe, 2-first connecting ring, 3-upper semicircular plate, 4-lower semicircular plate, 5-transmission belt, 6-hanging plate, 7-positioning screw, 8-threaded sleeve, 9-rectangular tube, 10-base plate, 11-first motor, 12-second connecting ring, 13-second motor, 14-fan blade, 15-lower pulley, 16-upper pulley, 17-positioning hole, 18-L-shaped plate, 19-U-shaped plate, 20-through opening, 21-limiting block, 22-strip groove. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figure 1 , Figure 2 and Figure 5 This utility model provides a technical solution: a fire smoke exhaust device, including a smoke exhaust pipe 1, a first motor 11 installed inside the smoke exhaust pipe 1, wherein a U-shaped plate 19 is installed at the bottom of the first motor 11, and an L-shaped plate 18 is installed on each of the two parallel sides of the U-shaped plate 19. The end of the L-shaped plate 18 away from the U-shaped plate 19 is connected and fixed to the smoke exhaust pipe 1. Multiple fan blades 14 are installed in a ring at equal intervals on the output shaft of the first motor 11. A first connecting ring 2 is fitted onto one end of the smoke exhaust pipe 1 and is connected and fixed to the smoke exhaust pipe 1. A second connecting ring 12 is installed on the end of the smoke exhaust pipe 1 away from the first connecting ring 2. Multiple small holes are opened in a ring at equal intervals on one side of the first connecting ring 2 and the other side of the second connecting ring 12. The design of the first connecting ring 2 and the second connecting ring 12 facilitates the installation of smoke exhaust pipes at both ends of the smoke exhaust pipe 1.

[0023] See Figures 1-5A second motor 13 is located directly below the exhaust pipe 1. A lower pulley 15 is mounted on the output shaft of the second motor 13, and an upper pulley 16 is mounted on the output shaft of the first motor 11. The upper pulley 16 and the lower pulley 15 are connected by a transmission belt 5. Two through holes 20 are provided at the lower part of the outer surface of the exhaust pipe 1 for the transmission belt 5 to pass through the exhaust pipe 1. A base plate 10 is installed at the bottom of the second motor 13. Two rectangular tubes 9 are symmetrically installed on the upper surface of the base plate 10. The lower end of the rectangular tubes 9 is connected and fixed with a triangular reinforcing rib, which connects and fixes the reinforcing rib to the base plate 10, improving the mechanical strength of the connection between the rectangular tubes 9 and the base plate 10. A hanging plate 6 is inserted inside the rectangular tube 9. The upper end of the hanging plate 6 is connected to the exhaust pipe 1, and the lower end of the hanging plate 6 is connected and fixed with a limit block 21. Vertically arranged... The strip groove 22 has a limiting block 21 slidably installed inside it. The upper part of the back side of the two rectangular tubes 9 are threaded with positioning screws 7. The second motor 13 is set directly below the exhaust pipe 1 and is connected to the output shaft of the first motor 11 and the output shaft of the second motor 13 by a transmission belt 5. When the first motor 11 fails to work properly, the positioning screws 7 are disengaged from the positioning holes 17. Under the gravity of the second motor 13, the length of the hanging plate 6 inside the rectangular tube 9 is shortened. At this time, the limiting block 21 is at the top inside the strip groove 22, so that the transmission belt 5 is in a taut state, which facilitates normal smoke exhaust when the second motor 13 is started. Compared with the use of two complete exhaust fans, it can achieve the goal of not having to equip two complete exhaust fans when there is a backup function, reducing costs and reducing the space occupied.

[0024] See Figure 1 , Figure 2 and Figure 4 Both rectangular tubes 9 have horizontal holes on their upper back sides. Threaded sleeves 8 are arranged concentrically with the horizontal holes on the outside of the horizontal holes. One end of the threaded sleeve 8 is connected and fixed to the rectangular tube 9. A positioning hole 17 that matches the horizontal hole is opened on one side of the hanging plate 6. One end of the positioning screw 7 extends into the positioning hole 17. The positioning screw 7, used to limit the relative position of the rectangular tube 9 and the hanging plate 6, is threaded into the threaded sleeve 8, achieving a stable connection between the positioning screw 7 and the rectangular tube 9.

[0025] See Figure 1 , Figure 2 and Figure 4 The exhaust pipe 1 is fitted with an upper semicircular plate 3 and a lower semicircular plate 4. The two ends of the upper semicircular plate 3 are connected to the two ends of the lower semicircular plate 4 respectively by fasteners. The upper end of the hanging plate 6 is connected and fixed to the lower semicircular plate 4, so that the hanging plate 6 is installed on the lower semicircular plate 4. Then, the structure formed by the lower semicircular plate 4 and the upper semicircular plate 3 is installed on the exhaust pipe 1, thereby increasing the connection range between the hanging plate 6 and the exhaust pipe 1, improving the stability of the structure, and realizing the assembly of the hanging plate 6 and the exhaust pipe 1.

[0026] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fire-fighting smoke exhaust device, comprising a smoke exhaust stack (1), characterized in that: A first motor (11) is installed inside the chimney (1). Multiple fan blades (14) are installed in a ring at equal intervals on the output shaft of the first motor (11). A second motor (13) is located directly below the chimney (1). A lower pulley (15) is installed on the output shaft of the second motor (13). An upper pulley (16) is installed on the output shaft of the first motor (11). The upper pulley (16) and the lower pulley (15) are connected by a transmission belt (5). Two openings are provided on the lower part of the outer surface of the chimney (1) for the transmission belt (5) to pass through the chimney (1). The second motor (13) has a base plate (10) installed at the bottom of the through-hole (20). Two rectangular tubes (9) are symmetrically installed on the upper surface of the base plate (10). A hanging plate (6) is inserted in the rectangular tube (9). The upper end of the hanging plate (6) is connected to the exhaust pipe (1). A limiting block (21) is fixedly connected to the lower end of the hanging plate (6). Vertically arranged strip grooves (22) are opened at the lower part of the opposite face of the two rectangular tubes (9). The limiting block (21) is slidably installed in the strip groove (22). A positioning screw (7) is threadedly connected to the upper part of the opposite face of the two rectangular tubes (9).

2. The fire-fighting smoke extraction device according to claim 1, characterized in that: A horizontal hole is provided on the upper part of the opposite side of the two rectangular tubes (9). A threaded sleeve (8) is provided on the outside of the horizontal hole and is arranged concentrically with the horizontal hole. One end of the threaded sleeve (8) is connected and fixed to the rectangular tube (9). The positioning screw (7) used to limit the relative position of the rectangular tube (9) and the hanging plate (6) is threadedly connected in the threaded sleeve (8).

3. A fire-fighting smoke extraction device according to claim 2, characterized in that: The hanging plate (6) has a positioning hole (17) on one side that matches the horizontal hole, and one end of the positioning screw (7) extends into the positioning hole (17).

4. A fire-fighting smoke extraction device according to claim 1, characterized in that: The exhaust pipe (1) is fitted with an upper semicircular plate (3) and a lower semicircular plate (4). The two ends of the upper semicircular plate (3) are connected to the two ends of the lower semicircular plate (4) respectively by fasteners. The upper end of the hanging plate (6) is connected and fixed to the lower semicircular plate (4).

5. A fire-fighting smoke extraction device according to claim 1, characterized in that: The first motor (11) has a U-shaped plate (19) installed at the bottom. L-shaped plates (18) are installed on the two parallel sides of the U-shaped plate (19). The end of the L-shaped plate (18) away from the U-shaped plate (19) is connected and fixed to the exhaust pipe (1).

6. A fire-fighting smoke extraction device according to claim 1, characterized in that: One end of the exhaust pipe (1) is fitted with a first connecting ring (2) that is fixed to the exhaust pipe (1). A second connecting ring (12) is installed at the end of the exhaust pipe (1) away from the first connecting ring (2). Both the first connecting ring (2) and the second connecting ring (12) have multiple small holes that are equidistantly arranged in a ring shape.

7. A fire-fighting smoke extraction device according to claim 1, characterized in that: The lower end of the rectangular tube (9) is connected and fixed with a reinforcing rib. The reinforcing rib has a triangular structure and is connected and fixed to the base plate (10).

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