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我院过去筛药劳动强度大,效率低,粉尘污染也较严重,筛出药粉质地也差。结合我院加工量小,场地窄的情况,设计出了一个长1m、宽0.5m、高0.5m的电动筛药箱。该机利用偏心轮使连杆产生往复运动的原理,带动筛箱筛选药粉。但开始由于转速快,振动太大,筛选效果差。为此,调整转速,并在筛箱两侧按装了滑轮,使转速降低,筛箱往复均衡振动约每分钟40～50次,达到了满意效果。由于各种中药制剂在配制中需要药粉颗粒大小不一,又使我们联想到筛底改为活动的可以根据制剂需要,随时更换筛子的型号。于是,将不同型号的筛子制成方型,恰好镶嵌到筛箱内,并可按需要更换型号。这样先后改动了十多
In the past, our hospital had high labor intensity, low efficiency, and serious dust pollution. Screening of powdered medicine powder was also poor. In combination with the small amount of processing and narrow space in our hospital, a 1m long, 0.5m wide and 0.5m high electric screen kit was designed. The machine uses the eccentric wheel to cause the reciprocating motion of the connecting rod and drives the screen box to screen the powder. However, since the speed is fast and the vibration is too great, the screening effect is poor. For this purpose, the speed is adjusted, and pulleys are installed on both sides of the screen box so that the rotation speed is reduced, and the screen box reciprocates and equalizes the vibration about 40 to 50 times per minute, thereby achieving satisfactory results. Since various Chinese medicine preparations require powders of different particle sizes in the preparation, we also think that the screen bottom can be changed to active ones and the model of the screen can be changed at any time according to the preparation requirements. As a result, different types of screens are made into square shapes that are precisely set in the screen box and can be replaced as needed. This has changed more than a dozen