Fire-fighting axial flow fan

Abstract

The utility model discloses a fire-fighting axial flow fan which comprises a fan main shell, a protective barrel is arranged in the fan main shell in a sleeved mode, a driving motor is installed in the protective barrel, a plurality of limiting guide blocks are fixed to the front portion of the inner side wall of the protective barrel, and a plurality of connecting blocks are formed or fixed to the outer side wall of the front portion of an outer shell of the driving motor. Slots extending axially are formed in the outer side walls of the connecting blocks, the front ends and the rear ends of the slots extend out of the front end faces and the rear end faces of the corresponding connecting blocks, and the limiting guide blocks are inserted into the corresponding slots in a sleeved mode and matched with the slots; a rear end cover is fixed to the rear end of the protective cylinder, an adjusting pressing plate is installed on the rear end cover, and the front end face of the adjusting pressing plate abuts against the rear end face of the driving motor in a pressing mode. The driving motor can be protected, the driving motor is convenient to mount and dismount, the protective cylinder and the rear end cover adopt a detachable structure, the dismounting and the mounting are convenient, and the heat dissipation effect can be ensured through the arranged ventilation and wire passing pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan equipment technical field more specifically, relate to a fire-fighting axial flow fan. BACKGROUND

[0002] The fire-fighting axial flow fan is an important equipment for smoke exhaust and air supply when fire occurs, and is mainly used for ensuring personnel safety evacuation and inhibiting fire spread. The fire-fighting fan drives the impeller to rotate through the motor, and generates positive pressure or negative pressure, so as to realize the circulation of air.

[0003] It must reach the condition of continuous operation for more than 60 minutes at 300 DEG C high temperature, and continuous 20 hours / once at 100 DEG C temperature without damage.

[0004] Therefore, it needs to protect the driving motor, and the existing way is to set the protection cylinder outside the driving motor for protection. The connection mode of the existing protection cylinder and the driving motor is to fixedly connect the end plate of the driving motor and the end plate of the protection cylinder through bolts, which is troublesome to install and disassemble, and the use effect is not ideal. UTILITY MODEL CONTENTS

[0005] The utility model discloses a fire-fighting axial flow fan, which can protect the driving motor, and is convenient to install and disassemble the driving motor. The protection cylinder and the rear end cover adopt a detachable structure, which is convenient to disassemble and install. The ventilation and wiring pipe can ensure the heat dissipation effect.

[0006] The utility model discloses a fire-fighting axial flow fan, which can protect the driving motor, and is convenient to install and disassemble the driving motor. The protection cylinder and the rear end cover adopt a detachable structure, which is convenient to disassemble and install. The ventilation and wiring pipe can ensure the heat dissipation effect.

[0007] A fire-fighting axial flow fan, comprising a fan main shell, a protection cylinder is sleeved in the fan main shell, a driving motor is installed in the protection cylinder, a plurality of limiting guide blocks are fixed on the front part of the inner side wall of the protection cylinder, a plurality of connecting blocks are formed or fixed on the front part of the outer shell of the driving motor, an axially extending insertion slot is formed on the outer side wall of the connecting block, the front and rear ends of the insertion slot extend out of the front and rear end faces of the corresponding connecting block, and the limiting guide blocks are inserted into and matched with the corresponding insertion slots.

[0008] A rear end cover is fixed to the rear end of the protection cylinder, an adjusting pressing plate is installed on the rear end cover, the front end face of the adjusting pressing plate is pressed against the rear end face of the driving motor, and the front end plate of the driving motor is pressed against the rear end face of the front end plate of the protection cylinder.

[0009] The front end of the output shaft of the driving motor extends out of the front end plate of the protection cylinder and is fixed with an impeller.

[0010] The outer side wall of the side plate of the rear end cover is formed with a plurality of protruding reinforcing portions, the outer end face of the protruding reinforcing portion is a plane, the inner side wall of the rear end of the corresponding protective cylinder is formed with a plurality of inner connecting protruding portions, the middle part of the protruding reinforcing portion is formed with a connecting through hole, the connecting through hole corresponds to the middle part of the corresponding inner connecting protruding portion, the screw rod part of the fixing bolt is inserted into the corresponding connecting through hole and screwed into the corresponding screw through hole, the gasket is inserted on the screw rod part of the fixing bolt, the gasket is clamped between the rotating part of the fixing bolt and the outer wall face of the corresponding protruding reinforcing portion, and the inner side wall of the side plate of the rear end cover is tightly attached to the outer side wall of the rear end of the protective cylinder.

[0011] The side plate of the protective cylinder is formed with a plurality of through holes, the inner end of the air passage and wire pipe is located in the corresponding through hole and is welded and fixed, the outer end of the air passage and wire pipe is welded and fixed on the inner side wall of the side plate of the fan main shell, and the air passage and wire pipe communicates with the corresponding outer through hole formed in the side plate of the fan main shell.

[0012] The middle part of the rear end plate of the rear end cover is formed with at least two adjusting screw through holes, the screw rod part of the rear adjusting bolt is screwed into the corresponding adjusting screw through hole, the inner end of the screw rod part of the rear adjusting bolt extends into the protective cylinder and is movably connected to the rear wall face of the same adjusting pressing plate, and the adjusting pressing plate is located in the protective cylinder.

[0013] The prominent effect of the utility model is:

[0014] The plug-in connection between the connecting block and the limiting guide block between the driving motor and the protective cylinder can protect the driving motor, and the driving motor is convenient to install and disassemble, the protective cylinder and the rear end cover adopt a detachable structure, the air passage and wire pipe can guarantee the heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a local structure schematic view of the utility model;

[0016] Fig. 2 It is a local structure schematic view between the protective cylinder and the driving motor of the utility model;

[0017] Fig. 3 It is a local structure schematic view between the protective cylinder and the rear end cover of the utility model. CONCRETE IMPLEMENTING METHOD

[0018] Embodiment, see as Figs. 1 to 3As shown, a fire-fighting axial flow fan comprises a fan main shell 10, a protective cylinder 20 is sleeved in the fan main shell 10, a driving motor 30 is installed in the protective cylinder 20, a plurality of limiting guide blocks 21 are fixed at the front part of the inner side wall of the protective cylinder 20, there are three limiting guide blocks 21 in the embodiment, all the limiting guide blocks 21 are uniformly distributed on the inner side wall of the protective cylinder 20 with the center axis of the protective cylinder 20 as the center, a plurality of connecting blocks 31 are formed or fixed on the front outer side wall of the outer shell of the driving motor 30, there are three connecting blocks 31 in the embodiment, all the connecting blocks 31 are uniformly distributed on the outer side wall of the outer shell of the driving motor 30 with the center axis of the outer shell of the driving motor 30 as the center, an axially extending insertion slot 32 is formed on the outer side wall of the connecting block 31, the front and rear ends of the insertion slot 32 extend out of the front and rear end faces of the corresponding connecting block 31, the limiting guide block 21 is inserted into the corresponding insertion slot 32 and cooperates with the insertion slot 32;

[0019] A rear end cover 40 is fixed at the rear end of the protective cylinder 20, an adjusting pressure plate 50 is installed on the rear end cover 40, the front end face of the adjusting pressure plate 50 is pressed against the rear end face of the driving motor 30, and the front end plate of the driving motor 30 is pressed against the rear end face of the front end plate of the protective cylinder 20. At least two adjusting screw through holes 42 are formed in the middle part of the rear end plate of the rear end cover 40, the screw rod part of a rear adjusting screw bolt 43 is screwed into the corresponding adjusting screw through hole 42, the inner end of the screw rod part of the rear adjusting screw bolt 43 extends into the protective cylinder 20 and is movably connected to the rear wall face of the same adjusting pressure plate 50, the adjusting pressure plate 50 is in the protective cylinder 20, a locking nut 44 is screwed on the screw rod part of the rear adjusting screw bolt 43, and the locking nut 44 is pressed against the rear wall face of the rear end plate of the rear end cover 40.

[0020] Further, the front end of the output shaft of the driving motor 30 extends out of the front end of the middle through hole of the front end plate of the protective cylinder 20 and is fixed with an impeller 1.

[0021] Further, a plurality of protruding reinforcing parts 41 are formed on the outer side wall of the side plate of the rear end cover 40, the outer end face of the protruding reinforcing part 41 is a plane, a plurality of inner connecting protruding parts 210 are formed on the inner side wall of the rear end of the corresponding protective cylinder 20, a connecting through hole is formed in the middle part of the protruding reinforcing part 41, the connecting through hole corresponds to the screw through hole formed in the middle part of the corresponding inner connecting protruding part 210, the screw rod part of a fixing screw bolt 200 is inserted into the corresponding connecting through hole and screwed into the corresponding screw through hole, a gasket is sleeved on the screw rod part of the fixing screw bolt 200, the gasket is clamped between the rotating part of the fixing screw bolt 200 and the outer wall face of the corresponding protruding reinforcing part 41, and the inner side wall of the side plate of the rear end cover 40 is tightly attached to the outer side wall of the rear end of the protective cylinder 20.

[0022] Further, all the protruding reinforcing portions 41 of the rear end cover 40 are uniformly distributed on the outer side wall of the side plate of the rear end cover 40 with the center axis of the rear end cover 40 as the center, and all the inner connecting protruding portions 210 of the protective cylinder 20 are uniformly distributed on the inner side wall of the rear end of the protective cylinder 20 with the center axis of the protective cylinder 20 as the center.

[0023] Further, a plurality of connecting support feet 2 are fixed on the middle outer side wall of the protective cylinder 20, and the outer ends of the connecting support feet 2 are welded and fixed on the inner side wall of the fan main shell 10.

[0024] Further, a plurality of through holes are formed on the side plate of the protective cylinder 20, the inner ends of the air passage and wire pipe 22 are located in the corresponding through holes and are welded and fixed, the outer ends of the air passage and wire pipe 22 are welded and fixed on the inner side wall of the side plate of the fan main shell 10, and the air passage and wire pipe 22 communicates with the corresponding outer through holes formed on the side plate of the fan main shell 10.

[0025] Meanwhile, the front part and the rear part of the bottom surface of the bottom plate of the fan main shell 10 are fixed with lower connecting seats, which can be connected and fixed at a place where the embodiment is needed to be installed.

[0026] When the protective cylinder 20 and the rear end cover 40 need to be disassembled in use, the corresponding fixing bolts 200 can be disassembled, so that the protective cylinder 20 and the rear end cover 40 can be disassembled, then the impeller 1 and the driving motor 30 are disassembled, the driving motor 30 can be pulled out backward, and the disassembly is realized.

[0027] In installation, the driving motor 80 is inserted into the protective cylinder 20, the limiting guide block 21 is inserted into the corresponding slot 32 to realize positioning, then the rear end cover 40 is installed, then the corresponding locking nuts 44 are loosened, the two rear adjusting bolts 43 are rotated, so that the front end surface of the adjusting pressing plate 50 is pressed against the rear end surface of the driving motor 30, the front end plate of the driving motor 30 is pressed against the rear end surface of the front end plate of the protective cylinder 20, the fixing of the driving motor 80 is realized, and then the locking nuts 44 are tightened.

[0028] In the embodiment, the driving motor 80 can be well protected through the combination and fixing of the rear end cover 40 and the protective cylinder 20, and the heat in the protective cylinder 20 can be dissipated through the air passage and wire pipe 22, so that overheating is prevented.

[0029] The above only describes the preferred embodiments of the utility model, and it should be noted that some improvements and decorations can be made without departing from the technical principles of the utility model for ordinary technical personnel in the technical field, and these improvements and decorations should also be regarded as the protection range of the utility model.

Claims

1. A fire-fighting axial flow fan comprising a fan main housing (10), characterised in that: The fan main shell (10) is sleeved with a protection cylinder (20), a driving motor (30) is installed in the protection cylinder (20), a plurality of limiting guide blocks (21) are fixed on the front part of the inner side wall of the protection cylinder (20), a plurality of connecting blocks (31) are formed or fixed on the front part of the outer shell of the driving motor (30), an axially extending insertion slot (32) is formed on the outer side wall of the connecting block (31), the front and rear ends of the insertion slot (32) extend out of the front and rear end faces of the corresponding connecting block (31), the limiting guide block (21) is inserted into the corresponding insertion slot (32) and cooperates with the insertion slot (32); The rear end of the protection cylinder (20) is fixed with a rear end cover (40), the rear end cover (40) is installed with an adjusting pressing plate (50), the front end face of the adjusting pressing plate (50) is pressed against the rear end face of the driving motor (30), and the front end plate of the driving motor (30) is pressed against the rear end face of the front end plate of the protection cylinder (20).

2. A fire fighting axial fan according to claim 1, characterised in that: The front end of the output shaft of the driving motor (30) extends out of the front end of the middle part through hole of the front end plate of the protection cylinder (20) and is fixed with an impeller (1).

3. A fire fighting axial fan according to claim 1, characterized in that: The outer side wall of the side plate of the rear end cover (40) is formed with a plurality of protruding reinforcing parts (41), the outer end face of the protruding reinforcing part (41) is a plane, the inner side wall of the rear end of the corresponding protection cylinder (20) is formed with a plurality of inner connecting protruding parts (210), the middle part of the protruding reinforcing part (41) is formed with a connecting through hole, the connecting through hole corresponds to the screw thread through hole formed in the middle part of the corresponding inner connecting protruding part (210), the screw rod part of the fixing bolt (200) is inserted into the corresponding connecting through hole and screwed into the corresponding screw thread through hole, the screw rod part of the fixing bolt (200) is sleeved with a gasket, the gasket is clamped between the rotating part of the fixing bolt (200) and the outer wall face of the corresponding protruding reinforcing part (41), and the inner side wall of the side plate of the rear end cover (40) is tightly attached to the outer side wall of the rear end of the protection cylinder (20).

4. A fire fighting axial fan according to claim 3, characterised in that: All the protruding reinforcing parts (41) of the rear end cover (40) are uniformly distributed on the outer side wall of the side plate of the rear end cover (40) with the center axis of the rear end cover (40) as the center, and all the inner connecting protruding parts (210) of the protection cylinder (20) are uniformly distributed on the inner side wall of the rear end of the protection cylinder (20) with the center axis of the protection cylinder (20) as the center.

5. A fire fighting axial fan according to claim 1, characterized in that: A plurality of connecting support feet (2) are fixed on the middle part outer side wall of the protection cylinder (20), and the outer ends of the connecting support feet (2) are welded and fixed on the inner side wall of the fan main shell (10).

6. A fire fighting axial fan according to claim 1, characterized in that: A plurality of through holes are formed on the side plate of the protection cylinder (20), the inner ends of the air and wire passing pipes (22) are in the corresponding through holes and are welded and fixed, the outer ends of the air and wire passing pipes (22) are welded and fixed on the inner side wall of the side plate of the fan main shell (10), and the air and wire passing pipes (22) communicate with the corresponding outer through holes formed on the side plate of the fan main shell (10).

7. A fire fighting axial fan according to claim 1, characterized in that: The middle part of the rear end plate of the rear end cover (40) is formed with at least two adjusting screw through holes (42), the screw rod part of the rear adjusting screw (43) is screwed in the corresponding adjusting screw through hole (42), the inner end of the screw rod part of the rear adjusting screw (43) extends into the protection cylinder (20) and is movably connected to the rear wall surface of the same adjusting pressing plate (50), and the adjusting pressing plate (50) is in the protection cylinder (20).

8. A fire fighting axial fan according to claim 7, characterised in that: The screw rod part of the rear adjusting screw (43) is screwed with a locking nut (44), and the locking nut (44) is pressed against the rear wall surface of the rear end plate of the rear end cover (40).

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