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Centrifugal-axial flow combined blower fan

A centrifugal fan and axial fan technology, applied in mechanical equipment, machines/engines, non-variable-capacity pumps, etc., can solve the problems of high cost, small centrifugal fan flow, and low outlet wind pressure, and achieve optimal grassland fire extinguishing, The effect of quick grassland fire extinguishing

Inactive Publication Date: 2012-01-18
CHINA AGRI UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a centrifugal axial flow combined fan, which solves the problems of the existing centrifugal fans used in wind fire extinguishers, such as small flow rate, low outlet air pressure, low efficiency and high cost

Method used

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Examples

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Embodiment 1

[0016] This embodiment of the centrifugal axial flow combined fan, such as figure 1 As shown, the impeller 8 is provided with an inlet drainage cover 9. The axial flow fan is composed of an axial flow blade 10 and a hub 11. It is located at the front end of the inlet of the impeller 8. The nut 13 and the shaft shoulder are used for axial positioning, and the power is transmitted to the shaft through the pulley 2. The flow fan drives shaft 1, and is transmitted to the axial flow fan through the axial flow fan drive shaft 1 and the flat key 12 to drive it to rotate. The centrifugal fan drive shaft 3 is connected with the pulley 2 through the flat key 12, and the pulley 2 passes through the shaft shoulder and the elastic retaining ring. 17 is fixed on the centrifugal fan drive shaft 3, the motor power is transmitted to the centrifugal fan drive shaft 3 through the pulley 2, the motor is connected with the axial flow fan drive shaft 1 through the belt, the axial flow fan drive shaf...

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Abstract

The invention discloses a centrifugal-axial flow combined blower fan used for a wind power fire-extinguisher used on grassland, belonging to the design field of a wind power fire-extinguisher used on grassland. According to the centrifugal-axial flow combined blower fan disclosed by the invention, a centrifugal blower fan and an axial-flow blower fan are respectively driven through two shafts with independently-adjustable rotating speed, the optimized matching of properties of the centrifugal blower fan and the axial-flow blower fan can be realized, besides air sucked through a suction force generated by the centrifugal blower fan due to self-rotation, additional air is sucked by the axial-flow blower fan through rotation, so that the problems of small flow quantity, low air pressure at an outlet, low efficiency and the like of the centrifugal blower fan are solved, and at the same time, different rotating speed combination can be flexibly selected according to different operating conditions of the wind power fire-extinguisher so as to realize efficient, quick and optimized fire-extinguishing of the grassland.

Description

technical field [0001] The invention belongs to the field of grassland wind fire extinguisher design, and particularly relates to a centrifugal axial flow combined fan for a grassland wind fire extinguisher. Background technique [0002] Grassland resources are the largest and most important land resources in my country's agricultural natural resources. Grassland is of great value. In addition to the economic value of raising livestock to increase the income of herdsmen, it also has various ecological values ​​such as windbreak and sand fixation, air purification, water conservation, soil erosion prevention, and ecological environment protection. Grassland fire is an important factor affecting grassland ecology and development. Since the founding of the People's Republic of China, there have been more than 50,000 grassland fires in pastoral areas alone, with a cumulative affected grassland area of ​​more than 200 million hectares, resulting in economic losses of more than 6...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/16
Inventor 王顺喜辛喆李钊婧云峰
Owner CHINA AGRI UNIV
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