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由南昌矿山机械研究所设计、长治矿山机械厂生产的BQ-20型轻便装药器,在符山铁矿经过工业试验考核后,于1985年1月24日在山西省长治市通过鉴定。 BQ-20型装药器主要用于平巷掘进、天井掘进和小直径浅孔采矿的爆破工程。该机系以压气为动力,采用了喷射器的原理,即利用喷射器的喷咀产生一股强烈的压气流,在喷射室内形成负压,将药箱中的炸药吸入半导电输药管,进而将炸药吹入炮孔内。由于容器不象国内现有的压入式装药器那样承受高于大气压的压力,因
Designed by Nanchang Mining Machinery Research Institute, the BQ-20 light charger produced by Changzhi Mining Machinery Factory passed the appraisal in Changzhi City, Shanxi Province on January 24, 1985 after the Fuanshan Iron Mine passed the industrial test. BQ-20-type charge is mainly used for roadway tunneling, tunneling and mining of small diameter shallow hole blasting. The machine is driven by compressed air, using the principle of the ejector, that is, the ejector nozzle is used to generate a strong forced air flow to form a negative pressure in the ejecting chamber, and the explosives in the medicine box are sucked into the semiconductive delivery tube, Then the explosives blown into the hole. Since the container does not withstand the pressure of higher than atmospheric pressure as the existing domestic press-type chargers, due to