A smoke exhaust fan for fire fighting

Abstract

The present invention relates to the field of building fire protection technology, and the present invention discloses a smoke exhaust fan for fire protection, comprising a base, a self-locking roller is fixed to the bottom of the base, support plates are symmetrically fixed to both sides of the upper end surface of the base, a rotating block is rotatably connected between the two support plates, a first smoke exhaust pipe is fixed to the top of the rotating block, a fan is rotatably connected in the first smoke exhaust pipe, a filter is fixed to one end of the first smoke exhaust pipe, the other end of the first smoke exhaust pipe is connected to the second smoke exhaust pipe through a connecting hose, and an opening and closing mechanism is fixed to the first smoke exhaust pipe. For the smoke exhaust fan for fire protection, when the moving ring moves to the right, the incomplete gear and the support rod rotate, and the support rod opens, thereby stretching the cover cloth, which is convenient for increasing the smoking area and achieving a better smoke exhaust effect. It can be used in building fire protection, and when the moving ring moves to the left, the incomplete gear and the support rod rotate, the support rod gathers together, and the cover cloth shrinks and closes for easy storage.

Description

Technical Field

[0001] The invention relates to the technical field of building fire protection, in particular to a smoke exhaust fan for fire protection. Background Art

[0002] When carrying out on-site processing of construction materials, it is sometimes necessary to incinerate the construction materials. In the process of smoke exhaust, a fire fan needs to be used to ensure the timely discharge of smoke.

[0003] The exhaust area of ​​existing smoke exhaust fans is generally fixed. If the exhaust area is too small, it will affect the exhaust efficiency. If the exhaust area is too large, it will take up too much space, making it inconvenient to store after use and difficult to carry and move. In view of the above problems, the existing equipment needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a smoke exhaust fan for fire fighting, so as to solve the problem that the smoke exhaust area of ​​the existing smoke exhaust fan mentioned in the above background technology is generally fixed. If the smoke exhaust area is too small, it will affect the smoke exhaust efficiency. If the smoke exhaust area is too large, it will take up too much space, making it inconvenient to store after use and more troublesome to carry and move.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a smoke exhaust fan for fire fighting, comprising a base, a self-locking roller is fixed to the bottom of the base, support plates are symmetrically fixed to both sides of the upper end surface of the base, a rotating block is rotatably connected between the two support plates, a first smoke exhaust pipe is fixed to the top of the rotating block, a fan is rotatably connected in the first smoke exhaust pipe, a filter is fixed to one end of the first smoke exhaust pipe, the other end of the first smoke exhaust pipe is connected to the second smoke exhaust pipe through a connecting hose, and an opening and closing mechanism is fixed to the first smoke exhaust pipe.

[0006] Preferably, a first motor is fixed to the outer side of one of the support plates, and an output end of the first motor is connected to the rotating block.

[0007] Preferably, a bracket is fixed to the bottom of the first smoke exhaust duct, and a second motor is fixed to the inner bottom of the bracket, the output end of the second motor is connected to a belt drive assembly, and the belt drive assembly passes through the bottom of the first smoke exhaust duct and is connected to the fan.

[0008] Preferably, a bracket is fixed to the upper end surface of the base, and the second smoke exhaust pipe is placed on the bracket.

[0009] Preferably, the opening and closing mechanism includes an electric telescopic rod, and the electric telescopic rod is fixed to the top of the first smoke exhaust pipe, a movable ring is fixed to one end of the electric telescopic rod, and the movable ring is placed on the outside of the first smoke exhaust pipe, a rack is fixed to the outside of the movable ring, and the outside of the rack is meshed with an incomplete gear, an axis frame is fixed to the outside of the first smoke exhaust pipe, the incomplete gear is rotatably connected to the outside of the axis frame, an opening is provided on one side of the movable ring, the axis frame passes through the opening, and the axis frames are evenly distributed circumferentially on the first smoke exhaust pipe, and a support rod is fixed to one side of the incomplete gear.

[0010] Preferably, a top support rod is fixed to one end of the first smoke exhaust pipe, and the top support rod is evenly distributed circumferentially on the first smoke exhaust pipe, a cover cloth is wrapped around the outer sides of the support rod and the top support rod, and the top support rod is made of elastic material.

[0011] Preferably, the top of the movable ring is connected to the first piston through a connecting frame, a first airtight pipe is fixed to the top of the first smoke exhaust pipe, the first piston is slidably connected in the first airtight pipe, and one side of the first airtight pipe is connected to the second airtight pipe through a connecting pipe, the second airtight pipe is fixed to the bottom of the first smoke exhaust pipe, and a second piston is slidably connected in the second airtight pipe.

[0012] Preferably, a moving rod is fixed to one side of the second piston, and a supporting cylinder is fixed to one end of the moving rod. A rotating shaft is rotatably connected inside the supporting cylinder, and the rotating shaft passes through one side of the supporting cylinder and is connected to the winding cylinder. The rotating shaft is connected to the supporting cylinder through a volute spring, and a pull rope is wound around the outer side of the winding cylinder, and the end of the pull rope is connected to the supporting rod.

[0013] Preferably, a battery pack is fixed in the base, and the battery pack is electrically connected to the first motor, the second motor and the electric telescopic rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The fire-fighting smoke exhaust fan can achieve the purpose of increasing the smoke extraction area through the coordinated use of the movable ring, the incomplete gear, the support rod, the cover cloth and the top support rod. When the movable ring moves to the right, the incomplete gear and the support rod rotate, and the support rod opens, so as to stretch the cover cloth, which is convenient for increasing the smoke extraction area and achieving better smoke exhaust effect. It can be used in building fire protection. When the movable ring moves to the left, the incomplete gear and the support rod rotate and rotate, the support rod gathers, and the cover cloth shrinks and closes for easy storage. The elastic top support rod can always support the cover cloth.

[0016] 2. The fire-fighting smoke exhaust fan can achieve the purpose of assisting stable opening and closing through the coordinated use of the movable ring, support rod, connecting frame, first piston, second piston, rotating shaft, winding drum, scroll spring and pull rope. When the movable ring moves left and right, it can drive the connecting frame and the first piston to move left and right. When the first piston moves right, the second piston moves left, and the winding drum moves left. At the same time, the support rod pulls the pull rope, and the winding drum releases the pull rope. At this time, the scroll spring twists, and the pull rope plays a restraining role on the support rod to prevent the support rod from rotating excessively. When the first piston moves left, the second piston moves right, the rotating shaft automatically rotates, and the winding drum automatically reels the pull rope.

[0017] 3. The fire-fighting smoke exhaust fan can achieve the purpose of adjusting the angle through the coordinated use of the rotating block, the first smoke exhaust duct and the fan. The first smoke exhaust duct can rotate with the rotating block to facilitate the angle adjustment so as to accurately adjust the smoke extraction angle. The fan can rotate to extract smoke to the left. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0020] Figure 3 It is a schematic diagram of the connection structure of the first smoke exhaust pipe, the filter screen and the opening and closing mechanism of the present invention;

[0021] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0022] Figure 5 It is a schematic diagram of the connecting structure of the moving ring, the incomplete gear, the opening, the support rod, the top support rod, the volute spring and the pull rope of the present invention;

[0023] Figure 6 It is a schematic diagram of the connection structure of the moving ring, the rack and the opening of the present invention;

[0024] Figure 7 It is a schematic diagram of the connection structure between the first smoke exhaust pipe and the top support rod of the present invention.

[0025] In the figure: 1, base; 2, self-locking roller; 3, support plate; 4, first motor; 5, rotating block; 6, first smoke exhaust pipe; 7, bracket; 8, second motor; 9, belt transmission assembly; 10, fan; 11, filter; 12, connecting hose; 13, second smoke exhaust pipe; 14, bracket; 15, opening and closing mechanism; 1501, electric telescopic rod; 1502, moving ring; 1503, rack; 1504, incomplete gear; 1505, shaft frame; 1506, electric telescopic rod; 1507, electric telescopic rod; 1508, electric telescopic rod; 1509, electric telescopic rod; 1510, electric telescopic rod; 1511, electric telescopic rod; 1512, electric telescopic rod; 1513, electric telescopic rod; 1514, electric telescopic rod; 1515, electric telescopic rod; 1516, electric telescopic rod; 1517, electric telescopic rod; 1518, electric telescopic rod; 1519, electric telescopic rod; 1520, electric telescopic rod; 1521, electric telescopic rod; 1522, electric telescopic rod; 1523, electric telescopic rod; 1524, electric telescopic rod; 1525, electric telescopic rod; 1526, electric telescopic rod; 1527, electric telescopic rod; 1528, electric telescopic rod; 1529, electric telescopic rod; 1530, electric telescopic rod; 1531, electric telescopic rod; 1532, electric telescopic rod; 1533, electric telescopic rod; 1534, electric telescopic rod; 1535, electric telescopic rod; 1536, electric telescopic rod; 1537, electric telescopic rod; 1538, electric 06. opening; 1507. support rod; 1508. cover cloth; 1509. top support rod; 1510. connecting frame; 1511. first piston; 1512. first airtight duct; 1513. connecting duct; 1514. second airtight duct; 1515. second piston; 1516. moving rod; 1517. support cylinder; 1518. rotating shaft; 1519. winding cylinder; 1520. volute spring; 1521. pull rope; 16. battery pack. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 7 The present invention provides a technical solution: a smoke exhaust fan for fire fighting, comprising a base 1, a self-locking roller 2 is fixed to the bottom of the base 1, support plates 3 are symmetrically fixed to both sides of the upper end surface of the base 1, a rotating block 5 is rotatably connected between the two support plates 3, a first smoke exhaust pipe 6 is fixed to the top of the rotating block 5, a fan 10 is rotatably connected in the first smoke exhaust pipe 6, a filter screen 11 is fixed to one end of the first smoke exhaust pipe 6, the other end of the first smoke exhaust pipe 6 is connected to the second smoke exhaust pipe 13 through a connecting hose 12, and an opening and closing mechanism 15 is fixed to the first smoke exhaust pipe 6.

[0028] In this embodiment, Figure 1 and Figure 2 As shown, a first motor 4 is fixed to the outer side of one of the support plates 3, and the output end of the first motor 4 is connected to the rotating block 5. The rotating block 5 can rotate under the action of the first motor 4, thereby driving the first smoke exhaust pipe 6 to rotate, so as to facilitate the adjustment of the angle of the first smoke exhaust pipe 6.

[0029] In this embodiment, Figure 2As shown, a bracket 7 is fixed to the bottom of the first smoke exhaust duct 6, and a second motor 8 is fixed to the inner bottom of the bracket 7. The output end of the second motor 8 is connected to a belt drive assembly 9, and the belt drive assembly 9 passes through the bottom of the first smoke exhaust duct 6 and is connected to a fan 10. The belt drive assembly 9 can operate under the action of the second motor 8, thereby driving the fan 10 to rotate, which is convenient for exhausting smoke to the left.

[0030] In this embodiment, Figure 1 and Figure 2 As shown, a bracket 14 is fixed to the upper end surface of the base 1, and the second smoke exhaust pipe 13 is placed on the bracket 14. The bracket 14 supports the second smoke exhaust pipe 13, and the second smoke exhaust pipe 13 can be pulled to a desired location before use.

[0031] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the opening and closing mechanism 15 includes an electric telescopic rod 1501, and the electric telescopic rod 1501 is fixed to the top of the first smoke exhaust pipe 6, a moving ring 1502 is fixed to one end of the electric telescopic rod 1501, and the moving ring 1502 is sleeved on the outside of the first smoke exhaust pipe 6, a rack 1503 is fixed to the outside of the moving ring 1502, and the outside of the rack 1503 is meshed and connected with an incomplete gear 1504, an axis frame 1505 is fixed to the outside of the first smoke exhaust pipe 6, the incomplete gear 1504 is rotatably connected to the outside of the axis frame 1505, and an opening is opened on one side of the moving ring 1502 1506, the shaft frame 1505 passes through the opening 1506, and the shaft frame 1505 is evenly distributed on the first smoke exhaust pipe 6 in the circumferential direction, and a support rod 1507 is fixed on one side of the incomplete gear 1504. The movable ring 1502 can move left and right under the telescopic action of the electric telescopic rod 1501, thereby driving the incomplete gear 1504 to rotate, and the support rod 1507 rotates accordingly, and the support rod 1507 opens or gathers. When the support rod 1507 opens, the cover cloth 1508 stretches out to facilitate the increase of the smoking area. When the support rod 1507 gathers, the cover cloth 1508 shrinks for easy storage.

[0032] In this embodiment, Figure 1 , Figure 5 and Figure 7 As shown, a top support rod 1509 is fixed at one end of the first smoke exhaust duct 6, and the top support rod 1509 is evenly distributed circumferentially on the first smoke exhaust duct 6, a cover cloth 1508 is wrapped around the outside of the support rod 1507 and the top support rod 1509, and the top support rod 1509 is made of elastic material. In the process of opening the cover cloth 1508, the elastic top support rod 1509 always supports the cover cloth 1508, making the cover cloth 1508 more stable.

[0033] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the top of the movable ring 1502 is connected to the first piston 1511 through the connecting frame 1510, the top of the first smoke exhaust pipe 6 is fixed with a first airtight pipe 1512, the first piston 1511 is slidably connected in the first airtight pipe 1512, and one side of the first airtight pipe 1512 is connected to the second airtight pipe 1514 through a connecting pipe 1513, the second airtight pipe 1514 is fixed to the bottom of the first smoke exhaust pipe 6, and the second piston 1515 is slidably connected in the second airtight pipe 1514, when the movable ring 1502 moves to the right, the connecting frame 1510 and the first piston 1511 move to the right, and the second piston 1515 can move to the left under the action of pneumatics, when the movable ring 1502 moves to the left, the connecting frame 1510 and the first piston 1511 move to the left, and the second piston 1515 can move to the right under the action of pneumatics.

[0034] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a moving rod 1516 is fixed to one side of the second piston 1515, and a support cylinder 1517 is fixed to one end of the moving rod 1516. A rotating shaft 1518 is rotatably connected inside the support cylinder 1517, and the rotating shaft 1518 passes through one side of the support cylinder 1517 and is connected to a winding cylinder 1519. The rotating shaft 1518 is connected to the support cylinder 1517 through a volute spring 1520. A pull rope 1521 is wound around the outer side of the winding cylinder 1519, and the end of the pull rope 1521 is connected to the support rod 1507. In the process of opening the support rod 1507, the winding cylinder 1519 rotates and Release the pull rope 1521. During the process of closing the support rod 1507, the rotating shaft 1518 can automatically rotate under the action of the spiral spring 1520, and the winding drum 1519 can automatically wind up the pull rope 1521, and the support rod 1507 can automatically close. When the second piston 1515 moves left and right, it can drive the moving rod 1516 to move left and right. During the process of opening the support rod 1507, the moving rod 1516 moves to the left, and during the process of closing the support rod 1507, the moving rod 1516 moves to the right. The pull rope 1521 pulls the support rod 1507 to prevent the support rod 1507 from rotating too much.

[0035] In this embodiment, Figure 2 As shown, a battery pack 16 is fixed in the base 1, and the battery pack 16 is electrically connected to the first motor 4, the second motor 8 and the electric telescopic rod 1501. The battery pack 16 can convert direct current into alternating current for use by the entire device under the action of the inverter, thereby ensuring the normal operation of the device.

[0036] The use method and advantages of the present invention: The working process of the smoke exhaust fan for fire fighting is as follows:

[0037] like Figures 1 to 7 As shown: first, the self-locking roller 2 is used to move the device to the desired location, and then the second smoke exhaust pipe 13 is pulled to the smoke treatment device. The first smoke exhaust pipe 6 can rotate with the rotating block 5 to facilitate the angle adjustment. The moving ring 1502 moves right to drive the incomplete gear 1504 and the support rod 1507 to rotate, and the support rod 1507 is opened to open the cover cloth 1508, thereby increasing the smoking area. The top support rod 1509 always supports the cover cloth 1508, and at the same time, the connecting frame 1510 and the first piston 1 511 moves right along with the moving ring 1502, and the second piston 1515, the moving rod 1516, the support cylinder 1517 and the winding cylinder 1519 move left. The winding cylinder 1519 releases the pull rope 1521, and then the belt transmission assembly 9 rotates to drive the fan 10 to rotate, thereby exhausting smoke to the left. The above operation can be repeated in reverse to close the support rod 1507, the cover cloth 1508 is gathered and retracted, and the rotating shaft 1518 automatically rotates under the action of the volute spring 1520, and the winding cylinder 1519 automatically reels the pull rope 1521.

[0038] In summary, the fire-fighting smoke exhaust fan achieves the purpose of increasing the smoke extraction area, assisting in stable opening and closing and adjusting the angle, and meets people's usage needs.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

[0040] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A smoke exhaust fan for fire fighting, comprising a base (1), characterized in that: A self-locking roller (2) is fixed to the bottom of the base (1), support plates (3) are symmetrically fixed to both sides of the upper end surface of the base (1), a rotating block (5) is rotatably connected between the two support plates (3), a first smoke exhaust pipe (6) is fixed to the top of the rotating block (5), a fan (10) is rotatably connected inside the first smoke exhaust pipe (6), a filter screen (11) is fixed to one end of the first smoke exhaust pipe (6), the other end of the first smoke exhaust pipe (6) is connected to the second smoke exhaust pipe (13) via a connecting hose (12), an opening and closing mechanism (15) is fixed to the first smoke exhaust pipe (6), the opening and closing mechanism (15) comprises an electric telescopic rod (1501), and the electric telescopic rod (1501) is fixed to the first smoke exhaust pipe (6), a moving ring (1502) is fixed at one end of the electric telescopic rod (1501), and the moving ring (1502) is placed on the outside of the first smoke exhaust pipe (6), a rack (1503) is fixed on the outside of the moving ring (1502), and the outside of the rack (1503) is meshed with an incomplete gear (1504), an axis frame (1505) is fixed on the outside of the first smoke exhaust pipe (6), and the incomplete gear (1504) is rotatably connected to the outside of the axis frame (1505), an opening (1506) is opened on one side of the moving ring (1502), the axis frame (1505) passes through the opening (1506), and the axis frames (1505) are evenly distributed on the first smoke exhaust pipe (6) in the circumferential direction, A support rod (1507) is fixed to one side of the incomplete gear (1504); a top support rod (1509) is fixed to one end of the first smoke exhaust pipe (6); and the top support rods (1509) are evenly distributed on the first smoke exhaust pipe (6) in the circumferential direction; a cover cloth (1508) is wound around the outer sides of the support rod (1507) and the top support rod (1509); and the top support rod (1509) is made of elastic material; the top of the movable ring (1502) is connected to the first piston (1511) via a connecting frame (1510); a first airtight pipe (1512) is fixed to the top of the first smoke exhaust pipe (6); the first piston (1511) is slidably connected to the first airtight pipe (1512); and the first airtight pipe (1512) is connected to the first piston (1511) in a sliding manner. 2) is connected to a second airtight pipe (1514) through a connecting pipe (1513), the second airtight pipe (1514) is fixed to the bottom of the first smoke exhaust pipe (6), and a second piston (1515) is slidably connected in the second airtight pipe (1514), a moving rod (1516) is fixed to one side of the second piston (1515), and a supporting cylinder (1517) is fixed to one end of the moving rod (1516), a rotating shaft (1518) is rotatably connected in the supporting cylinder (1517), and the rotating shaft (1518) passes through one side of the supporting cylinder (1517) and is connected to the winding cylinder (1519), and the rotating shaft (1518) is connected to the supporting cylinder (1517) through a volute spring (1520),A pull rope (1521) is wound around the outside of the winding drum (1519), and the end of the pull rope (1521) is connected to the support rod (1507). A battery pack (16) is fixed inside the base (1), and the battery pack (16) is electrically connected to the first motor (4), the second motor (8) and the electric telescopic rod (1501).

2. A smoke exhaust fan for fire fighting according to claim 1, characterized in that: A first motor (4) is fixed on the outer side of one of the support plates (3), and an output end of the first motor (4) is connected to a rotating block (5).

3. A smoke exhaust fan for fire fighting according to claim 1, characterized in that: A bracket (7) is fixed to the bottom of the first smoke exhaust duct (6), and a second motor (8) is fixed to the inner bottom of the bracket (7); an output end of the second motor (8) is connected to a belt drive assembly (9), and the belt drive assembly (9) passes through the bottom of the first smoke exhaust duct (6) and is connected to a fan (10).

4. A smoke exhaust fan for fire fighting according to claim 1, characterized in that: A bracket (14) is fixed to the upper end surface of the base (1), and the second smoke exhaust pipe (13) is placed on the bracket (14).

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