Movable fire-fighting smoke ventilator

Abstract

A movable fire-fighting smoke ventilator comprises a belt wheel frame, a protective cover, a smoke exhaust fan and a driver, the driver is arranged on the belt wheel frame, the protective cover comprises a filtering cover, a limiting lantern ring and a rear cover, the rear cover is connected to the driver, a driving shaft of the driver penetrates through the rear cover and the filtering cover to be connected to the rear cover, the filtering cover is sleeved with the limiting lantern ring, and the limiting lantern ring is connected to the driving shaft of the driver. The smoke exhaust fan is located in a cavity formed by folding the filter cover and the rear cover, and the connecting end of the smoke exhaust fan is in transmission connection with the driving shaft. The smoke exhaust fan has the advantages that the smoke exhaust fan is located in the cavity formed by folding the filter cover and the rear cover, the shield protects the smoke exhaust fan in the inner cavity of the shield, the foreign matter isolation effect is good, and the limiting lantern ring can improve the sealing effect of the filter cover and the rear cover; the frame with the wheels facilitates movement and carrying of the smoke exhauster, and the smoke exhauster is more convenient to use; the wear-resistant rubber supporting legs are mounted at the bottom of the belt wheel frame, so that the effects of shock prevention, protection and displacement prevention can be achieved when the smoke ventilator works and runs; the shield structure of the smoke ventilator meets the mechanical design requirement, and a long-distance wind column can be formed.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting equipment, in particular to a mobile fire fighting smoke exhaust machine. Background Art

[0002] There is a Chinese utility model patent with application number CN201621214406.0 and the name of "A Mobile Fire Smoke Exhaust Machine" which discloses a mobile fire smoke exhaust machine, including: a fuselage outer frame, a gasoline engine, an air duct, a fan, a mesh cover, a handle and wheels; the gasoline engine, the air duct, the fan and the mesh cover are all arranged in the internal space of the fuselage outer frame; the air duct is a different diameter air duct, and the diameter of the air inlet cylinder is larger than the diameter of the air outlet cylinder; a fan is arranged in the air duct, the output shaft of the gasoline engine is connected to the fan, and mesh covers are arranged on both the inner and outer sides of the fan; a foldable handle is arranged on the upper part of the fuselage outer frame, and wheels are arranged on the lower part of the fuselage outer frame. The mobile fire smoke exhaust machine of this utility model has more concentrated wind force, larger air volume and longer diffusion distance. However, the protection effect of the mesh cover of the mobile fire smoke exhaust machine is not ideal, and its structure still has room for improvement, so the structure of the mobile fire smoke exhaust machine needs to be further improved. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a mobile fire smoke exhaust machine which is easy to move, has good fan blade protection effect and can easily adjust the exhaust direction in response to the above-mentioned existing technical status.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: the mobile fire-fighting smoke exhaust machine includes a wheeled frame, a protective cover, a smoke exhaust fan, and a driver. The driver is arranged on the wheeled frame and is characterized in that: the protective cover includes a filter cover, a limiting ring and a back cover, the back cover is connected to the driver, the driving shaft of the driver passes through the back cover, the filter cover is connected to the back cover, the limiting ring is sleeved on the filter cover, the smoke exhaust fan is located in a cavity formed by the filter cover and the back cover, and the connecting end of the smoke exhaust fan is transmission-connected to the driving shaft.

[0005] As an improvement, the filter cover may preferably be provided with two layers of filter ring bars, with the first layer of filter ring bars and the second layer of filter ring bars being arranged alternately.

[0006] As a further improvement, the smoke exhaust fan may preferably include a chuck, fan blades, and a connecting piece, wherein the connecting piece is transmission-connected to the drive shaft, the chuck is connected to the connecting piece, and the ends of the fan blades are sequentially connected to the positioning grooves on the circumference of the chuck.

[0007] As a further improvement, the connecting member may preferably be a cup-shaped structure, a connecting through hole is provided at the bottom of the cup of the connecting member, a coupling is inserted in the connecting through hole, and the coupling is connected to the drive shaft.

[0008] As a further improvement, the chuck may preferably be composed of a front disc body and a rear disc body, and annular grooves are respectively provided on the rear surface of the front disc body and the front surface of the rear disc body. When the front disc body and the rear disc body are matched, the annular grooves of the front disc body and the rear disc body are combined to form a weight reduction cavity.

[0009] As a further improvement, the fan blade may preferably include a blade, a blade support and a blade root, wherein the blade root is clamped in the positioning groove, the blade support contacts the outer wall of the chuck, and the blade is connected to the surface of the blade support.

[0010] As a further improvement, the outer wall of the chuck may preferably be a convex edge with a width greater than the thickness of the chuck, the convex edge is fitted on the leaf tray, and the width of the leaf tray is greater than the width of the convex edge.

[0011] As an improvement, the bottom of the pulley frame may preferably be provided with a cross bar, on which an adjustment seat capable of adjusting the air inlet angle of the smoke exhaust fan is provided, and the adjustment seat is connected to the driver.

[0012] For further improvement, the adjustment seat may preferably include a swing plate, a swing positioning piece, a swing positioning pin, a pedal piece, and a return spring. The pedal piece can be rotatably connected to the cross bar below the adjustment seat, the swing positioning pin is connected to the pedal piece, the return spring is connected to the upper part of the pedal piece, the swing positioning piece is provided with notches at intervals for inserting the swing positioning pin, and the swing positioning piece is connected below the swing plate.

[0013] As an improvement, an openable and closable armrest portion may preferably be provided on the upper portion of the wheeled frame.

[0014] Compared with the prior art, the utility model has the following advantages: the protective cover comprises a filter cover, a limiting collar and a back cover, the back cover is connected to the driver, the driving shaft of the driver passes through the back cover, the filter cover is connected to the back cover, the limiting collar is sleeved on the filter cover, the smoke exhaust fan is located in a cavity formed by the filter cover and the back cover, the connecting end of the smoke exhaust fan is connected to the driving shaft drivingly, the protective cover protects the smoke exhaust fan in its inner cavity, the foreign matter isolation effect is good, the limiting collar can improve the sealing effect of the filter cover and the back cover; the smoke exhaust fan is fixed by a chuck, the fixation is firm, the connection stability is good, the sealing is good, and the smoke exhaust is better protected The connection position of the fan and the drive shaft is designed to extend the service life of the smoke exhaust fan; the wheeled frame facilitates the movement and transportation of the smoke exhaust fan, making it more convenient to use. In addition, an adjustment seat is provided on the cross bar to adjust the air inlet angle of the smoke exhaust fan. When using the smoke exhaust fan, the direction of the exhaust port can be easily and conveniently adjusted, making the application more flexible and the use effect better; most importantly, a through hole is provided on the front of the fan guard, and a spray head can be selected according to needs to achieve fine water mist spray, which plays a role in cooling and dust reduction during smoke exhaust; a hook installation position is reserved in front of the fan guard, which can be installed according to needs to achieve the connection of the smoke exhaust duct and play a role in long-distance air supply and smoke exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0016] Figure 2 for Figure 1 A stereogram at another angle;

[0017] Figure 3 yes Figure 1 The structural breakdown diagram of

[0018] Figure 4 yes Figure 3 A three-dimensional diagram after removing the pulley frame;

[0019] Figure 5 yes Figure 4 The structural breakdown diagram of

[0020] Figure 6 yes Figure 5 Further structural decomposition diagram of ;

[0021] Figure 7 yes Figure 4 Front projection after removing the drive;

[0022] Figure 8 yes Figure 7 Sectional view along line AA;

[0023] Fig. 9 yes Figure 7 A three-dimensional diagram of the middle exhaust fan structure;

[0024] Fig.10 yes Fig. 9 The structural breakdown diagram of

[0025] Fig.11 yes Figure 3 A perspective view of the middle pulley frame;

[0026] Fig.12 yes Fig.11 Front projection of

[0027] Fig.13 yes Fig.12 The cross section along line BB;

[0028] Fig.14 yes Fig.11 Three-dimensional image after the armrest is rotated. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 14 As shown, the mobile fire smoke exhaust machine of this embodiment includes a pulley frame 3, a protective cover, a smoke exhaust fan, and a driver 1. The driver 1 adopts a gasoline engine. The driver 1 is arranged on the pulley frame 3. The protective cover includes a filter cover 2, a limiting collar 21 and a rear cover 22. The rear cover 22 is connected to the driver 1. The driving shaft 11 of the driver 1 passes through the rear cover 22. The filter cover 2 is connected to the rear cover 22. The limiting collar 21 is sleeved on the filter cover 2. The smoke exhaust fan is located in the cavity formed by the filter cover 2 and the rear cover 22. The connecting end of the smoke exhaust fan is connected to the driving shaft 11 by transmission. Two layers of filter ring strips are arranged on the filter cover 2. The first layer of filter ring strips 201 and the second layer of filter ring strips 202 are arranged alternately.

[0031] The smoke exhaust fan includes a chuck, a fan blade, and a connecting member 42. The connecting member 42 is connected to the driving shaft 11 by transmission. The chuck is connected to the connecting member 42, and the ends of the fan blades are sequentially connected to the positioning grooves on the circumference of the chuck. The connecting member 42 is a cup-shaped structure. A connecting through hole is provided at the bottom of the cup of the connecting member 42. A coupling 43 is inserted in the connecting through hole. The coupling 43 is connected to the driving shaft 11. The chuck is formed by the front disc body 40 and the rear disc body 4 being matched. An annular groove is provided on the rear surface of the front disc body 40 and the front surface of the rear disc body 4, respectively. When the front disc body 40 and the rear disc body 4 are matched, the annular grooves of the front disc body and the rear disc body are matched to form a weight reduction cavity 41. The fan blade includes a blade 5, a blade tray 51 and a blade root 52. The blade root 52 is stuck in the positioning groove. The blade tray 51 touches the outer wall of the chuck. The blade 5 is connected to the surface of the blade tray 51. The outer wall of the chuck is a convex edge with a width greater than the thickness of the chuck. The convex edge fits on the leaf tray 51, and the width of the leaf tray 51 is greater than the width of the convex edge.

[0032] A crossbar 31 is provided at the bottom of the pulley frame 3, and an adjustment seat capable of adjusting the air intake angle of the smoke exhaust fan is provided on the crossbar 31, and the adjustment seat is connected to the driver 1. The adjustment seat comprises a swing plate 6, a swing positioning member 61, a swing positioning pin 62, a pedal member 63, and a return spring 64, wherein the pedal member 63 is rotatably connected to the crossbar 31 below the adjustment seat, the swing positioning pin 62 is connected to the pedal member 63, and the return spring 64 is connected to the upper part of the pedal member 63, and notches capable of inserting the swing positioning pin 62 are provided at intervals on the swing positioning member 61, and the swing positioning member 61 is connected to the lower part of the swing plate 6. A block extends from the crossbar 31, the bottom of the pedal member 63 is rotatably connected to the block, the top of the block is rotatably connected to the swing plate 6, one end of the return spring 64 is connected to the block at one side of the top of the block, and the other end of the return spring 64 is connected to the upper part of the pedal member 63. Wear-resistant rubber feet are installed at the bottom of the pulley frame 3.

[0033] An openable and closable armrest 7 is provided on the upper portion of the pulley frame 3. The specific structure of the armrest 7 belongs to the prior art, so it is not described in detail.

Claims

1. A mobile fire smoke exhaust machine, comprising a wheeled frame (3), a shield, a smoke exhaust fan, and a driver (1), wherein the driver (1) is arranged on the wheeled frame (3), characterized in that: The protective cover comprises a filter cover (2), a limiting collar (21) and a rear cover (22); the rear cover (22) is connected to the driver (1); the drive shaft (11) of the driver (1) passes through the rear cover (22); the filter cover (2) is connected to the rear cover (22); the limiting collar (21) is sleeved on the filter cover (2); the smoke exhaust fan is located in a cavity formed by the filter cover (2) and the rear cover (22); and the connection end of the smoke exhaust fan is drivingly connected to the drive shaft (11).

2. The mobile fire smoke exhaust machine according to claim 1, characterized in that: The filter cover (2) is provided with two layers of filter ring strips, wherein the first layer of filter ring strips (201) and the second layer of filter ring strips (202) are arranged alternately.

3. The mobile fire smoke exhaust machine according to claim 2, characterized in that: The smoke exhaust fan comprises a chuck, fan blades, and a connecting piece (42); the connecting piece (42) is drivingly connected to a drive shaft (11); the chuck is connected to the connecting piece (42); and the ends of the fan blades are sequentially connected to positioning grooves on the circumference of the chuck.

4. The mobile fire smoke exhaust machine according to claim 3, characterized in that: The connecting piece (42) is a cup-shaped structure. A connecting through hole is provided at the bottom of the cup of the connecting piece (42). A coupling (43) is inserted into the connecting through hole. The coupling (43) is connected to the drive shaft (11).

5. The mobile fire smoke exhaust machine according to claim 3, characterized in that: The chuck is formed by a front disc body (40) and a rear disc body (4) being matched together. Annular grooves are respectively arranged on the rear surface of the front disc body (40) and the front surface of the rear disc body (4). When the front disc body (40) and the rear disc body (4) are matched together, the annular grooves of the front disc body and the rear disc body are matched together to form a weight reduction cavity (41).

6. The mobile fire smoke exhaust machine according to claim 5, characterized in that: The fan blade comprises a blade (5), a blade support (51) and a blade root (52); the blade root (52) is clamped in a positioning groove, the blade support (51) contacts the outer wall of the chuck, and the blade (5) is connected to the surface of the blade support (51).

7. The mobile fire smoke exhaust machine according to claim 6, characterized in that: The outer wall of the chuck is a convex edge with a width greater than the thickness of the chuck, and the convex edge is fitted on the leaf tray (51), and the width of the leaf tray (51) is greater than the width of the convex edge.

8. The mobile fire smoke exhaust machine according to any one of claims 1 to 7, characterized in that: A crossbar (31) is provided at the bottom of the pulley frame (3), and an adjustment seat capable of adjusting the air intake angle of the smoke exhaust fan is provided on the crossbar (31), and the adjustment seat is connected to the driver (1).

9. The mobile fire smoke exhaust machine according to claim 8, characterized in that: The adjustment seat comprises a swing plate (6), a swing positioning member (61), a swing positioning pin (62), a pedal member (63), and a return spring (64); the pedal member (63) is rotatably connected to a cross bar (31) below the adjustment seat; the swing positioning pin (62) is connected to the pedal member (63); the return spring (64) is connected to the upper part of the pedal member (63); notches capable of being inserted into the swing positioning pin (62) are arranged at intervals on the swing positioning member (61); and the swing positioning member (61) is connected to the lower part of the swing plate (6).

10. The mobile fire smoke exhaust machine according to any one of claims 1 to 7, characterized in that: An openable and closable handrail portion (7) is arranged on the upper portion of the pulley frame (3).

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