CN203685610U - Environment-friendly centrifugal fan - Google Patents

Abstract

The utility model discloses an environment-friendly centrifugal fan. The environment-friendly centrifugal fan comprises a shell and a motor arranged at the right end of the shell, wherein a wind collecting cover is arranged at the left end of the shell, an air outlet is formed in the top of the shell, a wind wheel is arranged in the shell, the motor comprises a rotating shaft, the rotating shaft penetrates through the right wall of the shell and is connected to the wind wheel, the centrifugal fan further comprises a leak-proof device, the leak-proof device comprises a first pipeline, a second pipeline and a leak-proof shell fixed on the outer surface on the right end of the shell, the leak-proof shell is sleeved on the periphery of the rotating shaft, two ends of the second pipeline are respectively communicated with the leak-proof shell and the wind-collecting cover, and two ends of the first pipeline are respectively communicated with the air outlet and the wind collecting cover; the inner surface of the shell is stuck with flame retardant sponge; plastic layers are both coated on the surfaces of the wind wheel and the wind collecting cover, and the leak-proof device is capable of preventing toxic gas from leaking from a gap to pollution the environment when the toxic gas is conveyed; the flame retardant sponge is provided, so that ignition is avoided, and the noise is prevented; the plastic layers are provided, so that the transmitted gas cannot corrode the wind wheel and the wind collecting cover.

Description

Environment protection type centrifugal blower

Technical field

The utility model relates to mechanical engineering field, especially relates to a kind of environment protection type centrifugal blower.

Background technique

Centrifugal blower is many works under rugged environment, and for example, centrifugal blower can be used for ventilation, dust discharge, the cooling and air inducing of factory's mine, tunnel, cooling tower, boiler and industrial furnace; Its using process will be carried some gas unavoidably.

Use when blower fan, rotating shaft high speed rotating, easily causes that wind wheel moves, and produces spark with housing friction, in the time being full of inflammable gas around, easily causing fiery exploding, and personal safety is threatened; In the time carrying gas, gas easily spills the finedraw between rotating shaft and housing, in the time carrying toxic gas, easily befouling environment, near people's safety and health impact, sometimes transport gas also can be corroded wind wheel and wind-collection cover, efficiency to blower fan exerts an influence, and general corrosion-inhibiting coating is short service time, and long-term use is easily dropped, especially wind wheel High Rotation Speed, the easy breakage of anticorrosive coat comes off; And in the time that the wind wind-force of not discharging from exhaust outlet is excessive, can impact the noise producing to housing; The granule impurity such as the dust of blower fan outside can enter with the wind in blower fan and be deposited on wind wheel, reduce blower fan working efficiency, even damage blower fan, shorten the working life of blower fan.

Model utility content

The utility model, in order to overcome the deficiencies in the prior art, provides a kind of safety, environment protection type centrifugal blower that working efficiency is high of using.

To achieve these goals, the utility model is by the following technical solutions: a kind of environment protection type centrifugal blower, comprise housing and the motor of being located at described housing right-hand member, housing left end is provided with wind-collection cover, case top has exhaust outlet, in housing, be provided with wind wheel, motor comprises rotating shaft, this rotating shaft connects wind wheel through the right wall of housing, described centrifugal blower also comprises leakage protection device, this leakage protection device comprises the first pipeline, second pipe and be fixed on the leakproof shell of housing right-hand member outer surface, this leakproof valve jacket is located at rotating shaft periphery, second pipe two ends are communicated with respectively leakproof shell and wind-collection cover, the first pipe ends is communicated with respectively exhaust outlet and wind-collection cover, described shell inner surface is bonded with flame-retardant sponge, described wind wheel and wind-collection cover surface all scribble plastic layer.

As preferably, described the first pipeline and second pipe are fixed by the flange plate of end, and this flange plate bearing is provided with flange gasket, and described the first pipeline and second pipe surface all scribble plastic layer.

As preferably, between described leakproof shell left end and housing, be provided with seal ring, the left mural margin of described leakproof shell is provided with prolongation, and this prolongation is provided with mounting hole, screw is connected with housing through the mounting hole of prolongation, and described screw and prolongation joint are provided with seal washer.

In sum, the utlity model has following advantage: leakage protection device is set and can prevents from spilling the finedraw of gas between rotating shaft and housing, befouling environment while preventing from carrying toxic gas, has improved Security, has ensured near people health; Flame-retardant sponge is set, can avoid wind wheel to move time and housing friction produce spark, explosion caused, ensured life safety; Simultaneously flame-retardant sponge can also prevent that wind-force from impacting the noise producing to housing, and sponge can also absorb the granule impurity such as the dust that enters with the wind in blower fan, avoids impurity to reduce blower fan working efficiency, has extended the working life of blower fan; Plastic layer is set, prevents transport gas corrosion wind wheel and wind-collection cover, the efficiency of blower fan is exerted an influence, and plastic layer cost is low, service time is long, not fragile.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

In order to make those skilled in the art person better understand the utility model scheme, below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is carried out to clear, complete description.

As shown in Figure 1, a kind of environment protection type centrifugal blower, comprise housing 1 and the motor 3 of being located at described housing 1 right-hand member, housing 1 left end is provided with wind-collection cover 11, housing 1 top has exhaust outlet 12, in housing 1, be provided with wind wheel 13, motor 3 comprises rotating shaft, this rotating shaft connects wind wheel 13 through the right wall of housing 1, this device also comprises leakage protection device 2, this leakage protection device 2 comprises the first pipeline 21, second pipe 22 and be fixed on the leakproof shell 23 of housing 1 right-hand member outer surface, this leakproof shell 23 is sheathed on rotating shaft periphery, second pipe 22 one end are communicated with leakproof shell 23, second pipe 22 the other end connected set fan housings 11, first pipeline 21 one end are communicated with exhaust outlet 12, the other end connected set fan housing 11, in the time draining in leakproof shell 23 finedraw of gas between rotating shaft and housing 1, enter exhaust outlet by second pipe, under the effect of exhaust outlet air flow, gas moves on to the first entrance, under the suction of wind wheel, enter wind-collection cover through the first pipeline again, from new discharge, this leakage protection device is set and can prevents from spilling the finedraw of gas between rotating shaft and housing, befouling environment while preventing from carrying toxic gas, has improved Security, has ensured near people health, described housing 1 internal surface is bonded with flame-retardant sponge 14, flame-retardant sponge has fire retardancy, anti-corrosive properties, vibration resistance and sound-proofing, flame-retardant sponge rebound elasticity and tension stress are high, toughness is strong, there is good shockproof cushioning performance, the chemical corrosions such as sea water resistance, grease, acid, alkali, antibacterial, nontoxic, tasteless, pollution-free etc. a little, can adapt to blower fan work under various rugged environment, this flame-retardant sponge is set, can avoid wind wheel to move time and housing friction produce spark, explosion caused, ensured life safety, simultaneously flame-retardant sponge can also prevent that wind-force from impacting the noise producing to housing, and sponge can also absorb the granule impurity such as the dust that enters with the wind in blower fan, avoids impurity to reduce blower fan working efficiency, has extended the working life of blower fan, described wind wheel 13 and wind-collection cover 11 surfaces all scribble plastic layer, and this plastic layer is set, and prevent transport gas corrosion wind wheel and wind-collection cover, the efficiency of blower fan is exerted an influence, and plastic layer cost are low, and service time is long, not fragile.

Concrete, described the first pipeline 21 and second pipe 22 are fixed by the flange plate of end, and this flange plate bearing is provided with flange gasket, and flange plate good connecting effect is set, and flange gasket is set, and makes connection more stable, prevents Leakage Gas simultaneously; Described the first pipeline 21 and second pipe 22 surfaces all scribble plastic layer, and this arranges the anticorrosion ability of having strengthened pipeline.

Between described leakproof shell 23 left ends and housing 1, be provided with seal ring, sealing circle is set, can prevent that gas from spilling between leakproof shell and housing, strengthened sealing effect; The left mural margin of described leakproof shell 23 is provided with prolongation, and this prolongation is provided with mounting hole, and screw is connected with housing 1 through the mounting hole of prolongation, and described screw and prolongation joint are provided with seal washer; This setting solid effective, difficult drop-off arranges seal ring, enhanced leaktightness effect, fixed effect is better simultaneously.

Obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all should belong to the scope of the utility model protection.

Claims (3)

1. an environment protection type centrifugal blower, comprise housing (1) and be located at the motor (3) of described housing (1) right-hand member, housing (1) left end is provided with wind-collection cover (11), housing (1) top has exhaust outlet (12), in housing (1), be provided with wind wheel (13), motor (3) comprises rotating shaft, this rotating shaft connects wind wheel (13) through the right wall of housing (1), it is characterized in that: also comprise leakage protection device (2), this leakage protection device comprises the first pipeline (21), second pipe (22) and be fixed on the leakproof shell (23) of housing (1) right-hand member outer surface, this leakproof shell (23) is sheathed on rotating shaft periphery, second pipe (22) two ends are communicated with respectively leakproof shell (23) and wind-collection cover (11), the first pipeline (21) two ends are communicated with respectively exhaust outlet (12) and wind-collection cover (11), described housing (1) internal surface is bonded with flame-retardant sponge (14), described wind wheel (13) and wind-collection cover (11) surface all scribble plastic layer.

2. environment protection type centrifugal blower according to claim 1, it is characterized in that: described the first pipeline (21) and second pipe (22) are fixed by the flange plate of end, this flange plate bearing is provided with flange gasket, and described the first pipeline (21) and second pipe (22) surface all scribble plastic layer.

3. environment protection type centrifugal blower according to claim 2, it is characterized in that: between described leakproof shell (23) left end and housing (1), be provided with seal ring, the left mural margin of described leakproof shell (23) is provided with prolongation, this prolongation is provided with mounting hole, screw is connected with housing (1) through the mounting hole of prolongation, and described screw and prolongation joint are provided with seal washer.

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