Mining anti-explosion local ventilator

A local ventilation and mining explosion-proof technology, which is applied to the components of pumping devices for elastic fluids, mechanical equipment, machines/engines, etc., can solve the problems of increasing the distance of conveying air flow, low fan efficiency, and heavy weight, etc., to achieve Reduced internal resistance, good aerodynamic performance, and light weight

Inactive Publication Date: 2014-03-26
HUAINAN MINING IND GRP
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AI Technical Summary

Problems solved by technology

Commonly used ventilators have the disadvantage of low wind pressure. Most of the commonly used ventilators are first-class ventilators. When long-distance ventilation is required, the ventilators must be moved to increase the distance of the airflow.
Moreover, cast steel impellers are often used, which are heavy and have low fan efficiency.

Method used

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  • Mining anti-explosion local ventilator

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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] see figure 1 , an explosion-proof local ventilator for mining, including a drainage machine 1, a first-level box body 2, a first-level explosion-proof motor 3, a first-level blade 4, a second-level box body 5, a second-level explosion-proof motor 6, a second-level blade 7, and a sound-absorbing 8, air outlet 9, the blades are installed on the bearing of the explosion-proof motor, the first-stage blade 4 and the second-stage blade 7 counter-rotate each other, the muffler 8 is connected with the second-level box body 5, and the air outlet 9 is arranged on the The opposite end of the fan 1; the power of the first-level explosion-proof motor 3 and the second-level explosion-proof motor 6 is the same; the radial gap between each level of blades and the corresponding box is 1.6‰~3.7‰ of the diameter of the impeller; the first-level b...

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Abstract

The invention discloses a mining anti-explosion local ventilator which comprises a drainage machine, a primary box body, a primary explosion-proof motor, primary blades, a secondary box body, a secondary explosion-proof motor, secondary blades, a silencer and an air outlet. The blades are arranged on bearings of the explosion-proof motors, the primary blades and the secondary blades rotate oppositely, the silencer is connected with the secondary box body, and the air outlet is formed in the end opposite to an induced draft fan. The power of the primary explosion-proof motor is equal to that of the secondary explosion-proof motor. The radial clearance between the blades and the corresponding box bodies is 1.6%o-3.7%o of the diameter of an impeller. The number of the primary blades is 12. The number of the secondary blades is 11. The primary blades and the secondary blades are integrally-cast plastic blades. The mining anti-explosion local ventilator is high in safety performance, reasonable in structure, high in ventilation efficiency and suitable for long-distance ventilation.

Description

technical field [0001] The invention relates to a mine ventilator, in particular to a mine explosion-proof local ventilator. Background technique [0002] At present, the ventilation work of underground coal and rock roadway excavation in coal mines is mainly realized by press-in local fans. Its main function is to dilute and eliminate toxic and harmful gases in the excavation work space and supply fresh air flow to the excavation work space. Commonly used ventilators have the disadvantage of low wind pressure. Most of the commonly used ventilators are first-class ventilators. When long-distance ventilation is required, the ventilators must be moved to increase the distance of conveying air flow. Moreover, cast steel impellers are often used, which have a large weight and low fan efficiency. There is a need for a high-efficiency ventilator suitable for long distances. Contents of the invention [0003] The technical problem to be solved by the present invention is to pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/38
Inventor 王文杰
Owner HUAINAN MINING IND GRP
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