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由陕西省宝鸡峡灌溉管理局进行的“QB-90型气力泵水库清淤试验”,经过三年多的辛勤努力,取得丰硕成果。于1984年10月通过了技术鉴定。该项试验取得七个专题研究成果,即气力泵行星式铰刀、电磁自动压缩空气分配器、泵体结构型式、船体和泵体同步移动、不同空压量清淤效果、延长排浑距及水下旋耕式铰刀等试验研究及气力泵的初步计算方法。鉴定认为,这项科研成果已达国内先进水平。该项试验是在宝鸡峡引渭灌区的王家崖水库结合抽浑灌溉进行的。在扬程12米,淤积物平均粒径0.05毫米具体条件下,QB-90型气力泵清淤装置,输浑排沙平均浓度达40％(重量比,每立方米浑水含沙量534公斤)以上,每小时清淤量达37吨以上。以每年工作3000小时计,年清淤能力可超过10万吨。清淤成本每立方米泥沙约0.6元。气力泵是一种新泵型,无高速运转的吸排泥部件,故基本上不存在泥沙磨损问题,装置制作简单、维修量小,可靠性高,是一种造价和运行成本较低的水下清淤机械。气力泵主要用于底孔、放水洞、水电站压力管口附近狭窄水面、深水条件下清淤。在各类挖泥船无法开挖情况下,气力泵可发挥其独特作用。对开展异重流排沙、滞洪排沙、高渠泄水冲滩的水库,可利用气力泵疏通、保持闸前的冲刷漏斗,同时,气力泵也可用于船闸、船坞、航道、港口的清淤。
The “QB-90 Pneumatic Reservoir Dredging Test” conducted by Shaanxi Province Baojixia Irrigation Administration has achieved fruitful results after more than three years of hard work. In October 1984 passed the technical appraisal. The experiment made seven special research results, namely pneumatic pump planetary reamer, electromagnetic automatic compressed air distributor, the pump structure type, the hull and the pump body move synchronously, different air pressure dredging effect, to extend the row distance and Experimental Research on Underwater Rotary Reamer and Preliminary Calculation Method of Pneumatic Pump. Accreditation that the scientific research has reached the domestic advanced level. The experiment was carried out in combination with irrigation of the Wangjiayayu reservoir in the irrigation area of Wei River in Baojixia. In the head of 12 meters, the average sludge size of 0.05 mm under the specific conditions, QB-90 type pneumatic pump dredging device, the average sediment concentration of 40% (weight ratio, muddy water sediment 534 kilograms per cubic meter) Above, the amount of dredging per hour up to 37 tons. With an annual work of 3000 hours, annual dredging capacity can exceed 100,000 tons. Dredging costs about 0.6 yuan per cubic meter of sediment. Pneumatic pump is a new type of pump, suction and discharge mud parts without high-speed operation, so basically there is no problem of sediment wear, the device is simple, small maintenance, high reliability, is a lower cost and operating cost of water Under dredging machinery. Pneumatic pump is mainly used for the bottom hole, drain hole, hydropower station pressure nozzle near the narrow surface, dredging under deep water conditions. In the case of various types of dredging can not excavation, the pump can play its unique role. For reservoirs carrying sediment with different flows, flood discharge and sediment discharge, and flood ditches in high channels can be dredged with pneumatic pumps to keep the scour funnel in front of the gates. At the same time, the pneumatic pump can also be used in shiplocks, docks, waterways and seaports silt.