φ200毫米旋转吸咀(见图1)是参考吸粮机和我厂原有吸砂设备改进设计的。经一年多使用表明,吸砂效率有了显著提高: 吸砂设备改用旋转吸咀后,能达到以上效果的主要原因是:旋转吸咀顶部装了三把松料喂料刀,使流动性较差的砂类物起动,获得初速;增大砂和空气的混合比;再加上定向喂料、减少吸料死角等特点,从而使吸砂设备可选用较低输送风速、较高的混合比,作较经济的输送。 φ200 mm rotary nozzle (see Figure 1) is the reference suction grain machine and my factory original sand absorption equipment to improve the design. The use of more than a year shows that sand suction efficiency has improved significantly: sand suction device to spin nozzle, the main reason to achieve the above effect is: Rotary nozzle installed at the top of three loose material feeding knife, so that the flow Sand with poor start-up, to obtain the initial velocity; increase sand and air mixture ratio; together with the directional feeding, reduce the dead ends and other characteristics of the suction device so that sand suction device can choose a lower transmission speed, higher Mixing ratio, for more economical delivery.