CN201891675U

CN201891675U - Centrifugal tunnel axial blower

Info

Publication number: CN201891675U
Application number: CN201020640322XU
Authority: CN
Inventors: 魏建民
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-25
Filing date: 2010-11-25
Publication date: 2011-07-06
Anticipated expiration: 2020-11-25

Abstract

The utility model relates to a centrifugal tunnel axial blower, which has not only the pressure and flow of a centrifugal blower but also the wind feeding characteristic of an axial blower. The centrifugal tunnel axial blower specifically comprises a wind inlet, an impeller, a motor cylinder, a core cylinder, blades, and a casing, wherein the motor cylinder is arranged in the middle of the casing, with the front end connected with the core cylinder; the core cylinder is fixed with the wing-shaped blades; the impeller is arranged on the motor output shaft in the motor cylinder through a hub and provided with a rotating diffuser, the front disc and back disc of which are bent backwards; the blades are connected between the front and rear discs; and the wind inlet is formed at one end of the casing at the impeller. Compared with the existing small tunnel axial blower which is provided with a two-level axial impeller on the front and rear shafts of the motor, the centrifugal tunnel axial blower only needs a one-level impeller so as to simplify the manufacturing process, reduce the production cost and prolong the service life of the motor.

Description

Centrifugal tunnel axial-flow blower

Technical field

The utility model belongs to fan manufacturing technology field.

Background technique

The tunnel axial-flow blower belongs to ventilating apparatus for tunnels, and the tunnel blower fan is the capital equipment in tunnel, undertaking and giving the underground work personnel vital task of oxygen supply, because the tunnel degree of depth constantly increases, original axial-flow blower can not satisfy use, change as need, strengthen user cost.Present axial-flow blower is difficult to satisfy the ventilation needs than long tunnel.

Summary of the invention

The purpose of this utility model just provides a kind of can need not increasing a plurality of blower fans, and can satisfy under the various situations and use at the blower fan that ventilates than long tunnel (in 1500m).

Specifically, centrifugal tunnel axial-flow blower, comprise: intake grill, impeller, motor tube, core tube, stator, shell, the motor tube is installed middle part in the enclosure, motor tube front end is connected with the core tube, be fixed with the wing stator on the core tube, impeller is positioned on the motor output shaft in the motor tube by wheel hub; Impeller has the rotary diffusing device, and its shroud, hub disk are crooked backward, and blade is connected between shroud and the hub disk; Shell is positioned at impeller one end and has intake grill.

The utility model has the advantages that: original minitunnel axial-flow blower is that the two-stage axial-flow blower is contained on the forward and backward axle of motor, and the utility model only needs the one-level impeller, has so just simplified manufacturing process, has reduced cost of production, has improved the working life of motor.

The utility model impeller has the rotary diffusing device, and shroud, hub disk are crooked backward, help air flows like this.Rotation is flowed out behind the air process stator water conservancy diversion, has increased the flow velocity of air, thereby has strengthened the air quantity of blower fan, has improved pressure.

Description of drawings

Fig. 1 is the utility model general structure schematic representation.

Fig. 2 is blade wheel structure figure in the utility model.

Fig. 3 is the utility model stator and core sketch drawing.

Embodiment

Centrifugal tunnel axial-flow blower, comprise: intake grill 1, impeller 2, motor tube 3, core tube 4, stator 5, shell 6, its motor tube 3 is installed in middle part in the shell 6, motor tube 3 front ends are connected with core tube 4, be fixed with wing stator 5 on the core tube 4, impeller 2 is positioned on the motor output shaft in the motor tube 3 by wheel hub 2-4; Impeller 2 has the rotary diffusing device, and its shroud 2-1, hub disk 2-3 are crooked backward, and blade 2-2 is connected between shroud 2-1 and the hub disk 2-3; Shell 6 is positioned at impeller 2 one ends and has intake grill 1.

The utility model changes original straight cylinder type shell into two little shuttle type broad in the middle, after 1 rectification of air process intake grill, enters into impeller 2 uniformly, after impeller 2 actings, flows backward fast; Through stator 5 water conservancy diversion, air is become helical, by the exhaust outlet ejection, increased speed air flow like this, increased the flow and the pressure of blower fan.

The utility model also changes original both stage impellers into the one-level impeller, has reduced cost of production, has simplified technology, has improved the motor life-span.Example: original blower fan institute distribution motivation is 11kw, and 2 utmost point two ends of rotor all spindle nose are stretched out, 2200.00 yuan of separate unit prices; Join the 11kw-2p motor after the improvement, motor is a plain edition in the same old way, and 1780.00 yuan of separate unit prices are improved the rear motor price and lacked than original motor price: 2200.00-1780.00=420.00 unit, 1 year will reduce cost (Annual output is by 200 calculating)

420.00 * 200=8400.00 unit

Motor refueled once when former installation both stage impellers in every month, shut down 8H at every turn, shut down 12 * 8=96 (H) in 1 year; Each shutdown loss calculates by 5000 yuan/H, and 1 year because of shutting down the oiling loss: 5000 * 96=480000 unit; And after improving, shut down in per season and refuel once, each 8H, shut down 32H (4 * 8) in 1 year, the each shutdown by 5000 yuan/H calculated, and refuels loss because of shutting down in 1 year: 5000 * 32=160000 unit, lacked loss because of shutting down to refuel in such 1 year: 80000-160000=320000 unit; After the improvement, not only saved the time, and improved economic benefit.

Claims

1. centrifugal tunnel axial-flow blower, comprise: intake grill (1), impeller (2), motor tube (3), core tube (4), stator (5), shell (6), it is characterized in that: motor tube (3) is installed in middle part in the shell (6), motor tube (3) front end is connected with core tube (4), be fixed with wing stator (5) on the core tube (4), impeller (2) is positioned on the interior motor output shaft of motor tube (3); Impeller (2) has the rotary diffusing device, and its shroud (2-1), hub disk (2-3) are crooked backward; Shell (6) is positioned at impeller (2) one ends and has intake grill (1).

2. centrifugal tunnel according to claim 1 axial-flow blower is characterized in that shell (6) is the little shuttle type broad in the middle in two.

3. centrifugal tunnel according to claim 1 and 2 axial-flow blower is characterized in that impeller (2) has only one-level.