explosion-proof Ventilation Fan for Tunnel and Coal Mine

SDF(D) energy saving four-stage counter rotating axial flow fans for long and large tunnels

Overview

After repeated experiments and research, SDF(D) energy saving four-stage counter rotating axial flow fans for long and large tunnels are fans especially designed for long and large tunnels, and have got national patents. They are applicable to the long distance and constant air volume ventilation of tunneling construction of highway, railway and diversion works, and have the characteristics of long air delivery distance, low noise, high efficiency and large air volume, thus they solve the problem that ordinary axial flow fans cannot meet air delivery demand when tunneling distance is long.

Each stage of SDF(D) energy saving four-stage counter rotating axial flow fans for long and large tunnels is driven by the same power motor. Impeller and motor are directly connected and the rotation between adjacent impellers is in opposite direction. Air flow could get energy after entering to primary impeller, accelerate through secondary impeller and then accelerate the removal after the last impeller. The last impeller plays the function of static guide vane in ordinary axial flow fan, which increases the energy of air flow while getting the velocity component in straightening circumference direction, and then reach the higher air pressure and efficiency than that of two-stage counter rotating fans.

  For construction ventilation under special environment, various spraying treatments of blades could also be made according to the requirements of users.

Characteristics

Characteristics are long air delivery distance, high efficiency, low noise, high air pressure, large air volume, constant air volume and energy saving. Either single-stage or double-stage or three-stage could be opened for operation according to ventilation requirements. The energy saving effect is obvious.

Technical performance parameter table of SDF(D) energy saving four-stage counter rotating axial flow fans for long and large tunnels

Schematic diagram of structure of SDF(D) energy saving four-stage counter rotating axial flow fans for long and large tunnels

1.Current collector             2.Inlet muffling pot   

3.Main machine (I)             4.Motor   

5. Main machine (II)          6. Main machine (III)   

7.Main machine (IV)           8.Outlet muffling pot  

9.Air cylinder joint

 Vv

As the owner of Hongxin fans, the key product specially promoted by the nation, the Company specializes in the production of various explosion-proof fans for mines, tunnel fans and high pressure spray fans.

Shanxi Yuncheng Hongxin Ventilation Equipment Co., Ltd locates in the east of the Yellow River with long history of civilization. It is between two large high-tech development zones of Salt Lake and Xia County. Three main lines, including 209 National Highway, Datong-Yuncheng Highway and Yuncheng-Sanmenxia Highway go across this place. In addition, it boasts of convenient transportation and communication. The time-honored culture of Shanxi merchants exerts influence on operation principle of modern people in the east of the Yellow River.

Since the establishment, the Company strengthens technical innovation and increases technical content of products for serving mines, tunnel construction and environmental protection. It aims to achieve development and expands market by depending on talents and science and technology. Currently, it has developed main products including: 1. Explosion-proof fans for mines FBCDZ, FBCZ and FBD three large series totaling more than hundreds of product models; 2. Special axial flow fans for tunnel construction SDF(A), SDF(B) , SDF(C) and SDF(D), and special jet fans SSF for tunnel operation; 3. High pressure spray fans GPF three series totaling scores of varieties. The products have the characteristics of reliable performance, stable quality and novel structure, and are well received by users. After being reviewed by CQGC, the Company is rated as "Trustworthy Product Promotion Unit". The products have been sold to more than 20 provinces, cities and regions. The fan impellers of the Company adopt new international technology, and the products are highly commended in such fields as mines, tunnels and environmental treatment.

The Company is committed to building Hongxin brand with "Great Reputation, Excellent Technology and Careful Polishing". We are willing to advance with times and create the brilliancy together with far-sighted people from various fields in the world.