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1 前言 煤矿生产过程中产生大量粉尘,高浓度的粉尘严重危害人体健康。近年来在许多尘源处采用了光控自动喷雾措施。光控自动喷雾装置提高了喷雾降尘的自动化程度,但同时存在喷雾水量小、水压损失大的弊病,这是由喷雾装置中的电磁阀通水孔径较小造成的。而在一些断面大、粉尘浓度高的场所,要求喷雾水量大、水压损失小,才能有效降低粉尘浓度,因此,在不改变喷雾装置结构的前提下,我们研究了一种液控阀,用通过喷雾装置的小流量液体控制液控阀中的阀
1 Introduction Coal mine produces a lot of dust in the production process, high concentrations of dust seriously endanger human health. In recent years, many dust sources at the light-controlled automatic spray measures. Light-controlled automatic spray device to improve the degree of automation of the spray dust, but at the same time there is a small amount of water spray, water loss large drawbacks, which is caused by the solenoid valve in the spray device caused by the smaller water flow aperture. In some places with large cross section and high dust concentration, large amount of sprayed water and small water pressure loss are required to reduce the dust concentration effectively. Therefore, without changing the structure of the spray device, we have studied a pilot valve The valve in the pilot valve is controlled by a small flow of liquid from the spray device