CN211737487U

CN211737487U - Two-stage axial flow fan

Info

Publication number: CN211737487U
Application number: CN201922358290.8U
Authority: CN
Inventors: 刘清波; 郑连生
Original assignee: Zhangqiu Chuangke Fan Co ltd
Current assignee: Zhangqiu Chuangke Fan Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-10-23
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a doublestage axial fan, which comprises a housing, the frame is installed to bottom in the casing, install transmission group in the frame, transmission group rotates and has cup jointed the dwang, one of dwang is served fixed cover and is equipped with the belt pulley, the winding has the angular band on the belt pulley, casing upper end both sides all are fixed with two mounting panels, and common solid demountable installation has the bedplate on two mounting panels, install the motor on the bedplate. The utility model discloses the fan has improved the pressure of fan and the flow of fan is unchangeable through the two-stage impeller, and the fan pressure of production is the sum of the pressure that the two-stage impeller produced, has improved axial fan's pressure, reduces axial fan's noise often in operation, and compact structure is convenient for install and use and maintenance, when maintaining, only needs the corner tape to demolish, detect the inside structure of casing can, be applicable to the ventilation in various places and the helping hand ventilation of process system.

Description

Two-stage axial flow fan

Technical Field

The utility model relates to an axial fan technical field especially relates to a doublestage axial fan.

Background

The axial flow fan has a very wide application, namely, the axial flow fan and the fan blade have the same direction of air flow, such as an electric fan, and an air conditioner outer machine fan is an axial flow type running fan. The "axial flow" is so called because the gas flows parallel to the fan axis. Axial flow fans are typically used in applications where flow requirements are high and pressure requirements are low. The axial fan fixes the position and moves the air. Axial fans occupy an important position in ventilation systems. Because the large and complex underground system projects have the particularity of being built underground, the requirements of high pressure and compact structure are provided for the ventilation system in order to ensure the reasonable configuration of the ventilation system of the underground system projects.

However, the axial flow fan has the disadvantages of high noise, small wind pressure and wind volume, and the power of the motor and the size of the impeller must be increased to obtain high wind pressure and wind volume, so that the common axial flow fan has high manufacturing cost, large power consumption and is not beneficial to environmental protection and energy saving, and therefore, the improvement is needed to ensure stable wind pressure in use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the wind pressure instability of above-mentioned present axial fan, need the not enough of incremental cost during the improvement, and the doublestage axial fan who proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a doublestage axial fan, includes the casing, the frame is installed to the bottom in the casing, install transmission group in the frame, transmission group rotates and has cup jointed the dwang, one of dwang is served fixed cover and is equipped with the belt pulley, the winding has the angle area on the belt pulley, casing upper end both sides all are fixed with two mounting panels, and common solid demountable installation has the bedplate on two mounting panels, install the motor on the bedplate, the upper end on the casing is equipped with the opening, the upper end in angle area runs through the opening and extends to the upper end of casing, the upper end winding in angle area is on the output shaft of motor, the both ends of dwang all are fixed with a plurality of impellers.

Preferably, bolts are fixed on the four mounting plates, through holes are formed in the bedplate, the bolts penetrate through the through holes and extend to the upper end of the bedplate, and nuts are screwed on the four bolts.

Preferably, a bracket is fixed to the bottom of the housing.

Preferably, the impellers at two ends of the rotating rod are correspondingly arranged.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a fan has improved the pressure of fan and the flow of fan is unchangeable through the two-stage impeller, and the fan pressure of production is the sum of the pressure that the two-stage impeller produced, has improved axial fan's pressure, reduces axial fan's noise often in operation, and compact structure is convenient for install and use and maintenance, when maintaining, only needs the corner tape to demolish, detect the inside structure of casing can, be applicable to the ventilation in various places and the helping hand ventilation of process system.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a side view of the present invention.

In the figure: 1 motor, 2 machine seat boards, 3 machine shells, 4 impellers, 5 supports, 6 transmission sets, 7 belt pulleys, 8 angular belts and 9 racks.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1-2, a two-stage axial flow fan comprises a housing 3, a bracket 5 is fixed at the bottom of the housing 3, the bracket 5 stably supports the whole device, a frame 9 is installed at the bottom inside the housing 3, a transmission set 6 is installed on the frame 9, the frame 9 stably supports the transmission set 6, a rotating rod is rotatably sleeved on the transmission set 6, a belt pulley 7 is fixedly sleeved at one end of the rotating rod, an angular belt 8 is wound on the belt pulley 7, two mounting plates are fixed at both sides of the upper end of the housing 3, a base plate 2 is fixedly and detachably installed on the two mounting plates together, a motor 1 is installed on the base plate 2, an opening is arranged at the upper end of the housing 3, the upper end of the angular belt 8 penetrates through the opening and extends to the upper end of the housing 3, the motor 1 rotates to drive the angular belt 8 to rotate, the angular belt 8 drives the belt, the upper end winding of angle area 8 is on motor 1's output shaft, and the both ends of dwang all are fixed with a plurality of impellers 4, and the impeller 4 at dwang both ends corresponds the setting, and the dwang drives impeller 4 and rotates, because two impeller 4 correspond the setting, when the impeller 4 at dwang both ends rotates, can guarantee the pressure in the fan, has reduced the noise when the fan moves.

Referring to fig. 1-2, bolts are fixed on the four mounting plates, through holes are formed in the bedplate 2, the bolts penetrate through the through holes and extend to the upper end of the bedplate 2, nuts are screwed on the four bolts, and when the motor 1 is mounted and dismounted, the motor 1 can be mounted and dismounted only by rotating the nuts on two sides.

The utility model discloses in, when using, motor 1 drives the angular belt 8 and rotates, angular belt 8 drives belt pulley 7 and rotates, belt pulley 7 drives the dwang and rotates, the dwang drives the impeller 4 of both sides and rotates simultaneously, because the impeller 4 of dwang both sides corresponds the setting, can increase the internal pressure of fan, guarantee that the internal pressure of fan lasts stably, when overhauing and installing the dismantlement, only need demolish angular belt 8 or bedplate 2, detect transmission group 6 in casing 3, the efficiency of maintenance is improved, and the maintenance cost is reduced.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A two-stage axial fan comprising a casing (3), characterized in that: frame (9) are installed to bottom in casing (3), install transmission group (6) on frame (9), transmission group (6) are rotated and have been cup jointed the dwang, one of dwang is served and is fixed the cover and is equipped with belt pulley (7), the winding has angular belt (8) on belt pulley (7), casing (3) upper end both sides all are fixed with two mounting panels, common demountable installation has bedplate (2) on two mounting panels, install motor (1) on bedplate (2), the upper end on casing (3) is equipped with the opening, the upper end of angular belt (8) runs through the opening and extends to the upper end of casing (3), the upper end winding of angular belt (8) is on the output shaft of motor (1), the both ends of dwang all are fixed with a plurality of impellers (4).

2. The dual-stage axial flow fan as claimed in claim 1, wherein bolts are fixed on each of the four mounting plates, through holes are formed on the base plate (2), the bolts extend through the through holes and reach the upper end of the base plate (2), and nuts are screwed on each of the four bolts.

3. The double stage axial flow fan according to claim 1, characterized in that a bracket (5) is fixed to the bottom of the casing (3).

4. The dual-stage axial flow fan according to claim 1, wherein the impellers (4) at the two ends of the rotating rod are arranged correspondingly.