CN211144869U

CN211144869U - Centrifugal fan with low dual-drive noise

Info

Publication number: CN211144869U
Application number: CN201922194568.2U
Authority: CN
Inventors: 张贵
Original assignee: Hangzhou Qijiang Hvac Equipment Co Ltd
Current assignee: Hangzhou Qijiang Hvac Equipment Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-07-31
Anticipated expiration: 2029-12-10

Abstract

The utility model relates to a centrifugal fan that dual drive noise is little, including spiral case, motor and the impeller of setting in the spiral case, outside the spiral case that the motor set up, its characterized in that: two ends of the impeller are respectively provided with a metal ring, the outer diameter of the metal ring is larger than that of the impeller, two rotating shafts are further arranged in the volute, and the metal rings are arranged on the rotating shafts and supported by the rotating shafts; each metal ring is connected with a rubber roller which is fixed on the driving shaft, and the middle part of the driving shaft is provided with a driving wheel which is connected with a motor rotating shaft through a belt. The utility model discloses a two rubber gyro wheels provide drive power drive impeller at the both ends of impeller and rotate, have the advantage that rotate steadily, the noise is little.

Description

Centrifugal fan with low dual-drive noise

Technical Field

The utility model relates to a fire-fighting equipment technical field, in particular to a centrifugal fan that double drive noise is little for discharging fume.

Background

At present, most of buildings in cities are high-rise buildings, and the safety of a fireproof smoke exhaust system is very important. If the fire-proof smoke exhaust system is not good enough, the system is easy to malfunction, and the serious consequences are usually caused. A large number of existing high-rise buildings are provided with a fire-fighting smoke exhaust system for exhausting a large amount of toxic dense smoke generated by fire burning. In the fire-fighting smoke exhaust system, a smoke exhaust fan is a core component, and the working stability determines the quality of the whole system. The existing fire-fighting smoke exhaust fan is poor in working stability due to the fact that the temperature of combustion smoke reaches 200-300 ℃, the continuous operation time is short, and a good smoke exhaust effect cannot be achieved. For example, chinese patent 02292875.8 discloses a fire-fighting cabinet type centrifugal ventilator, which comprises a casing, a volute, an impeller, a motor, an air inlet flange, and an air outlet flange, wherein a rotating shaft of the impeller is connected to the casing by a high temperature resistant bearing, the motor is located at the top end of the casing, the motor and the rotating shaft of the impeller are connected by a belt pulley through a belt, and the impeller is driven by only one end of the impeller during operation, which has the disadvantage of uneven torque transmission.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a dual drive, noise are little, smooth operation's centrifugal fan.

In order to solve the technical problem, the utility model discloses a following technical scheme, a centrifugal fan that dual drive noise is little, including spiral case, motor and the impeller of setting in the spiral case, outside the spiral case that the motor set up, its characterized in that: two ends of the impeller are respectively provided with a metal ring, the outer diameter of the metal ring is larger than that of the impeller, two rotating shafts are further arranged in the volute, and the metal rings are arranged on the rotating shafts and supported by the rotating shafts; each metal ring is connected with a rubber roller which is fixed on the driving shaft, and the middle part of the driving shaft is provided with a driving wheel which is connected with a motor rotating shaft through a belt.

The utility model discloses a set up two pivots in the spiral case, form the support, at impeller both ends metal loop of fixed mounting respectively, on the gyro wheel was arranged in to the metal loop, the impeller can arrange in two pivots through the metal loop like this, has erect by two pivots, bears the weight of impeller. The metal ring can rotate relative to the rotating shaft, so that the impeller can roll on the two rotating shaft brackets. The motor shaft passes through the belt and connects the drive wheel at drive shaft middle part, and the drive wheel passes through the drive shaft and gives the rubber gyro wheel at drive shaft both ends with power transmission, and two rubber gyro wheels drive two rings and rotate, and then the drive impeller rotates and forms wind-force.

The utility model discloses a two rubber gyro wheels provide drive power drive impeller at the both ends of impeller and rotate, have the advantage that rotate steadily, the noise is little.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic side view.

Detailed Description

As shown in fig. 1 and 2, the centrifugal fan with low dual drive noise comprises a volute 1, a motor 2 and an impeller 3 arranged in the volute, wherein the motor 2 is arranged outside the volute 1, two ends of the impeller 3 are respectively provided with a metal ring 4, the outer diameter of each metal ring 4 is larger than that of the impeller 3, a first rotating shaft 5 and a second rotating shaft 6 are further arranged in the volute 1, the metal rings 4 are arranged on the first rotating shaft 5 and the second rotating shaft 6 and supported by the first rotating shaft 5 and the second rotating shaft 6, and the center of gravity of each metal ring 4 is located between the first rotating shaft 5 and the second rotating shaft 6; each metal ring 4 is connected with a rubber roller 7, the rubber rollers 7 are fixed on a driving shaft 8, a driving wheel 9 is arranged in the middle of the driving shaft 8, and the driving wheel 9 is connected with a motor rotating shaft 21 through a belt 10.

Claims

1. The utility model provides a centrifugal fan that dual drive noise is little, includes spiral case, motor and the impeller of setting in the spiral case, outside the spiral case that the motor set up, its characterized in that: two ends of the impeller are respectively provided with a metal ring, the outer diameter of the metal ring is larger than that of the impeller, two rotating shafts are further arranged in the volute, and the metal rings are arranged on the rotating shafts and supported by the rotating shafts; each metal ring is connected with a rubber roller which is fixed on the driving shaft, and the middle part of the driving shaft is provided with a driving wheel which is connected with a motor rotating shaft through a belt.