JPH0735797U - Blower - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent dust from adhering to the impeller blades. [Configuration] Non-adhesive fluororesin plate 1 for impeller blades 15
Adhere 8

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a blower configured to prevent dust from adhering to an impeller.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 2, for example, a large push-type dust collector (bag filter) 2 is installed as a dust collector for preventing air pollution of the electric furnace 1 for iron making. The blower 3 employs a rearward-facing blower or airfoil fan which is usually efficient from the viewpoint of energy saving.

The impeller of the blower 3 will be described with reference to FIG. 3 showing a cut-away front view and FIG. 4 showing a cut-away side view. In these figures, 4 is the rotating shaft of the blower 3, 5 is an annular boss through which the rotating shaft 4 penetrates, 6 is a key groove formed on the inner surface of the boss 5, and 7 is a key formed on the outer surface of the rotating shaft 4. Grooves and 8 are keys fitted in both key grooves 6 and 7, and prevent the boss 5 from being displaced with respect to the rotating direction of the rotating shaft 4. Reference numeral 9 is a thread groove formed on the rotary shaft 4 on both sides of the boss 5, and 10 is a nut screwed into the thread groove 9 from both sides of the boss 5, respectively, to prevent the boss 5 from being displaced in the axial direction of the rotary shaft 4. ing.

Reference numeral 11 is a brim-shaped portion on the periphery of the boss 5, and 12 is a brim-shaped main plate, the inner edge of which abuts on the brim-shaped portion 11. Reference numeral 13 denotes an annular pressing body which is in contact with the inner edge portion of the main plate 12, 14 is a plurality of bolts and nuts, and the nut is tightened to the bolt which penetrates the pressing body 13, the inner edge portion of the main plate 12 and the brim portion 11. The main plate 12 is fixed to the boss 5. Reference numeral 15 is a plurality of blades planted on both sides of the main plate 12, 16 is a side plate fixed to the top of each blade 15, 17 is dust adhering to the blades 15, and arrows indicate gas flows.

[0005]

In the case of the conventional blower, as shown in FIG. 4, dust 17 contained in the gas adheres to the blades 15 and grows, and the impellers are partially peeled off. Is unbalanced, vibration of the rotating shaft 4 and the like increases, and operation becomes impossible. Therefore, it is necessary to regularly stop the blower to remove the dust 17 adhering thereto, which causes a problem of stopping the blower and a difficult removing work. The present invention has been made in view of the above points, and an object thereof is to provide a blower in which dust is prevented from adhering to the blades of an impeller.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the blower of the present invention has a non-adhesive fluororesin plate adhered to the impeller blades.

[0007]

[Action]

 In the blower of the present invention configured as described above, since the non-adhesive fluorine resin plate is adhered to the impeller blades, dust contained in the gas does not adhere to the impellers, and therefore the rotary shaft There is no need for work to stop the blower and remove dust.

[0008]

【Example】

 One embodiment will be described with reference to FIG. In the figure, the same reference numerals as those in FIG. 4 indicate the same or corresponding ones. The difference from the conventional example is that a fluorine resin plate 18 having excellent non-adhesive properties is adhered to the blade 15 with a two-component epoxy adhesive. It is a point. As a result, the dust does not adhere to the blades 15, vibration due to the adhesion and separation of the dust does not occur, and the dust removing work becomes unnecessary.

Next, experimental results will be described. When the blower of the present invention was installed in a building dust collector of an electric furnace for iron making of 50 t / H and put into practical use with the following specifications, dust did not adhere to the blades even after long-term use. Wind pressure 380mm Water column Airflow 10300m ³ / min Rotation speed 750rpm Electric motor 1000KW

In the conventional blower, dust adheres to the blades, so that the blower is stopped once a week and the difficult dust removal work is performed for a long time. Further, it is needless to say that the fluororesin plate may be adhered to a place where dust is likely to adhere other than the blade.

[0011]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. In the blower of the present invention, since the non-adhesive fluororesin plate 18 is adhered to the blades 15 of the impeller, it is possible to prevent dust contained in the gas from adhering to the blades 15. Vibration of the rotating shaft and the like does not occur, and it is possible to eliminate the difficult work of stopping the blower to remove dust.

[Brief description of drawings]

FIG. 1 is a cutaway side view of an embodiment of the present invention.

FIG. 2 is a schematic view of a dust collector.

FIG. 3 is a cut front view of a conventional example.

FIG. 4 is a cutaway side view of FIG.

[Explanation of symbols]

 15 blades 18 Fluororesin plate

Claims (1)

[Scope of utility model registration request] 1. A blower in which a non-adhesive fluororesin plate is adhered to the impeller blades.