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Detachable plastic structure local ventilator for coal mine

A local ventilation and dismantling technology, applied in the ventilation of mines/tunnels, liquid fuel engines, components of pumping devices for elastic fluids, etc. Small changes, etc., to achieve the effect of easy handling and installation, reducing starting current, and eliminating discrete noise

Active Publication Date: 2016-03-02
SHANXI JULONG FAN & BLOWERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, local fans for coal mines produced and used in China mainly include FBD, FB, FBDC and other series. The casings, impellers, and noise reduction devices of these fans are welded and processed with ordinary carbon steel materials; The addition of a side air intake device and an integral injection-molded impeller has improved the noise reduction and fan performance to a certain extent, but the overall technology has not changed much, and it cannot effectively solve the two major problems of the local fan fan: the first noise, most The noise of local ventilators used in coal mines exceeds 85 decibels. When used in a small underground space, the noise is increased and becomes one of the main noise sources in mines.
Second, transportation and maintenance. Mine can be divided into shafts and inclined shafts. The transportation of inclined shafts can be carried out in the form of belt transmission, rail mine car transportation, motorized mine car transportation, etc. Moreover, there is no lifting equipment in the mine, so the steel fan, the weight Very heavy, it is extremely inconvenient to transport, install and maintain

Method used

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  • Detachable plastic structure local ventilator for coal mine
  • Detachable plastic structure local ventilator for coal mine
  • Detachable plastic structure local ventilator for coal mine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1, figure 1 It is a structural schematic diagram of a detachable plastic structure local fan for coal mines of the present invention. It is composed of an inlet muffler 1, a main body 2, an outlet muffler 3 and a base 4. They are fixedly connected together by double flange structure and bolts, and can be disassembled. At least one main body 2 is fixedly connected between the inlet muffler 1 and the outlet muffler 3, and a base 4 is installed on the lower part of each main body 2; figure 2 It is the structural representation of the inlet muffler in the present invention, image 3 for figure 2 A structural schematic diagram of A, the structure of the inlet muffler 1 is: including the first outer cylinder 11, the first inner cylinder 12, the first sound-absorbing cotton 13, the arc collector 16 and the first conical cylinder 17 , the first inner cylinder 12 is fixedly set inside the first outer cylinder 11, the sound-absorbing cotton 13 is laid on the inner wal...

Embodiment 2

[0029] Embodiment 2, the above-mentioned detachable plastic structure partial fan for coal mine, the first outer cylinder 11, the first inner cylinder 12, the first bracket 15, the arc collector 16 and the first outer cylinder 11 of the inlet muffler 1 The first conical cylinder 17, the main casing 21 of the main body 2, the impeller 23, the motor fixing frame 24 and the motor junction box 25, the second outer cylinder 31, the second inner cylinder 32, and the second bracket 35 of the outlet muffler 3 , Air duct cloth hook 36 and the second tapered barrel 37 are formed by plastic injection molding and plastic welding.

Embodiment 3

[0030] Embodiment 3, the above-mentioned detachable plastic structure local fan for coal mines, the first inner cylinder 12, the first bracket 15, the arc collector 16 and the first conical cylinder 17 are connected as a whole ; The second inner tube 32, the second bracket 35, the air tube cloth hook 36 and the second tapered cylinder 37 are connected as one.

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PUM

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Abstract

A mining local ventilation machine with a detachable plastic structure comprises an inlet silencer 1, a main machine body 2, an outlet silencer 3 and a base 4, and is detachable, wherein internal cylinders and conical cylinders of the inlet silencer and outlet silence are porous plastic sheets and coated with sound absorption cotton to eliminate part of radiation noise and discrete noise generated by rotation to achieve the silencing effect; the internal cylinders and the external cylinders of the inlet silencer and the outlet silencer are detachable, after being damaged or used for a long time, internal parts are maintained after being detached, small silencing holes blocking the internal cylinders and the conical cylinders are washed, or the sound absorption cotton is replaced, the operation is simple and convenient, most parts are formed through plastic injection moulding, the weight is reduced greatly, the carrying and mounting are facilitated, the sound insulation effect of the plastic is good, and the damping performance is high.

Description

technical field [0001] The invention relates to a detachable plastic-structured local ventilator for coal mines, which belongs to the technical field of coal mine tunnel local ventilation. Background technique [0002] Mine ventilation system is an important part of coal mining and the basic guarantee for safe production in mines. The role of local ventilators in coal mines is to continuously deliver fresh air to the underground working face during the mine production process, supplying personnel to breathe and dilute And remove all kinds of toxic and harmful gases and mineral dust underground, create a good working environment, and ensure the health and safety of underground operators. [0003] At present, local fans for coal mines produced and used in China mainly include FBD, FB, FBDC and other series. The casings, impellers, and noise reduction devices of these fans are welded and processed with ordinary carbon steel materials; The addition of a side air intake device a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D25/08F04D29/66F04D29/64F04D29/02E21F1/08
Inventor 张和义谢海军李春萍吕存栓张晋风郑新华
Owner SHANXI JULONG FAN & BLOWERS
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