CN101372982A - Drive tandem explosion-proof fan with two built-in electric motors - Google Patents

Abstract

A draught fan is connected in series by 2 levels of impellers of identical structure, and an electromotor is installed inside the fan. By adopting an internally installed electromotor, only a draught fan needs to be installed when equipment is installed, thereby saving the installation expense, reducing the floor space of the equipment, and lowering the operational and managerial cost. A mid-rectifier is additionally installed between an I-level fan and an II-level fan according to the principle of aerodynamics so as to improve air flow and enhance the efficiency of the draught fan; the draught fan can lead either of the fans to operate independently as a single-level main fan, or to perform double-level series operation, the wind pressure of which is twice the pressure of the single-level operation; a user can flexibly determine the operating mode of the draught fan according to different requirements of coal mines for air volume in different periods, under different conditions and in accordance with different lengths of laneways, thereby reducing the time spent on adjusting the air volume, and helping improve production safety. Because the draught fan can be divided into two levels, enterprises can choose either level at the beginning of exploiting mines according to particular conditions, thus saving initial investment.

Description

Drive tandem explosion-proof fan with two built-in electric motors

Affiliated technical field

The present invention relates to be used for the ventilation of mine down-hole, improve the operating conditions and the air quality of down-hole, guarantee Mine Safety in Production.

Background technique

At present, in the safety and production in mine, blower fan has important role.There is following outstanding problem in blower fan in now using

1. electric machine external, equipment are installed difficulty, are taken up room greatly;

2. when carrying out the adjustment of ventilator air quantity, the time spent is long, is unfavorable for Safety of Coal Mine Production;

3. the equipment initial investment is big;

4. equipment running process administration cost height.

Summary of the invention

In order to solve the electric machine external that existing blower fan in use exists, blower fan and motor need to install respectively, are difficult for coaxial grade and cause equipment that difficulty is installed; Need shut down when adjusting air quantity change blade angle cause the time spent long, be unfavorable for Safety of Coal Mine Production; The initial stage of production directly the configuration heavy-duty motor, cause the equipment initial investment big, operational efficiency is low; Problem such as administration cost height in the equipment running process, the present invention adopts two built-in electric motors to drive the series connection blower fan to address the above problem.

The present invention solves the problems of the technologies described above the technological scheme of being taked: adopt drive tandem explosion-proof fan with two built-in electric motors as shown in Figure 1.The ventilator complete machine is made up of eight big critical pieces such as streamlined slip ring 1, I level main barrel 2, impeller 4,8, I level casing 5,9, back rectifier 10, diffuser 11, middle rectifier 6, built-in motors 3.For convenient in carrying ventilator base disposes set of wheels down, the user provides attachment rail for oneself during installation.

Blower fan is 2 grades of impeller serials, and motor is built among the ventilator casing, owing to adopted built-in electric motor, only needs to install the ventilator complete machine on request when erection unit, has saved mounting cost, and the space of hold facility simultaneously also greatly reduces; The both stage impellers structure is identical.Installed middle rectifier additional according to aerodynamic principle between I level machine and the II level machine, improved air flow condition, fan efficiency is improved; This blower fan can be done the single-stage master with any one-level and fan independent operating, but also double stage tandem operation, and the blast of series operation is the twice of single-stage operation; The user can require decision fan operation mode flexibly to the difference of air quantity according to the length in colliery different times, different condition and tunnel, can save the adjustment time when regulating air quantity, helps Safety of Coal Mine Production; Because blower fan can be divided into two-stage, mine the initial stage of production enterprise can only select the one-level blower fan to use as the case may be, save initial investment greatly; Because electric machine built-in is among the ventilator casing, for the management of blower motor become very simple, in the fan operation process, can reduce the management operating cost of equipment.

Drive tandem explosion-proof fan with two built-in electric motors (hereinafter to be referred as ventilator or the main fan of series connection) is the mining conditions, production characteristics, technical merit at China's coal-mine and energy-conservation, the high effective ventilator that design.

Ventilator manufactures and designs by the requirement of industry standard (MT754-2005), has obtained " Coal mine product safety sign certificate " that performance " inspection certificate ", " friction spark inspection certificate ", the mining product safety sign of " certification of conformity of an instrument for explosive atmosphere " and national Coal Mine Safety Supervision Bureau office issue through mechanism's checks such as national dust suppression in mine ventilation safety product quality supervision and inspection centers.

Embodiment

Because motor is built among the ventilator casing, before dispatching from the factory connecting between motor and the fan impeller by producer according to technical requirements, before installation, carried out debugging, ventilator only needs as requested the ventilator peace to be placed on the attachment rail that lays in advance to get final product when mounted, the ventilator complete machine directly is placed on the open air, need not build special-purpose ventilation equipment room, install very conveniently, save space saves time.

When air quantity need carry out big adjustment, owing to be the motor that two platform independent are settled in the ventilator, so can close or open wherein a motor fast according to real needs, ventilator is changed over the two-stage ventilator of single-stage or series connection form rapidly, avoided single motor drag in insurmountable always problem, the shared time in the adjustment process helps Safety of Coal Mine Production when saving the air quantity adjusting greatly.

The time limit of coal mining is long, requirement to air quantity between the whole productive life is also differing widely, following initial stage of production of normal condition,, institute's required airflow was less, exploitation later stage institute's required airflow is bigger, so the air quantity in existing coal mining when guaranteeing the later stage exploitation reaches requirement, mostly disposed powerful blower fan, caused the equipment initial investment big, operational efficiency is not high.This ventilator is that two platform independent are placed in the motor in the blower fan, any one-level can be done the single-stage master and fan independent operating, but also double stage tandem operation, the blast of series operation is the twice of single-stage operation; The user can require decision fan operation mode flexibly to the difference of air quantity according to the length in colliery different times, different condition and tunnel, this ventilator is the ventilator that two-stage can solely be opened owing to what adopt, mine the initial stage of production enterprise can only select the one-level blower fan to use as the case may be, save initial investment greatly.

Blower motor is external to occur motor and blower fan connection place card people easily, and personnel get an electric shock, and ventilator cost in operation management is increased.In order to guarantee personnel's life safety, the present invention adopts electric machine built-in among ventilator, and is very simple with regard to what become for the management of fan motor, can reduce the management operating cost of equipment in the running of blower fan.

Claims (1)

1. an impeller is the tandem explosion-proof ventilator that 2 grades two built-in electric motors drives, and ventilator is mainly formed (Fig. 1) by critical pieces such as streamlined slip ring 1, I level main barrel 2, motor 3, I level impeller 4, I level casing 5, middle rectifier 6, II level main barrel 7, II level impeller 8, II level casing 9, back guide 10, diffuser 11 and bases 13.I, II level impeller are identical; Rectifier in the middle of installing additional between I level machine and the II level machine is improved the ventilator overall efficiency; The established angle of blade can be adjusted, and the purpose of adjustment makes the variation that allows ventilator can comply with air quantity, blast in the ventilation system that it is served in desirable, the most economic state work, thereby satisfies mine to the air quantity needs, avoids power wastage.Its major character is a ventilator, and but any one-level master fans independent operatings, but also double stage tandem operation, the blast of ventilator series operation is the twice of single-stage operation blast, and the user can determine the method for operation flexibly according to the length in the different mining period in colliery, different operating condition and tunnel.

Images