针对SPB型射流泵自检泵过程中劳动强度大、不安全等现状,应用定滑轮改变受力方向的原理,研制新型射流泵投捞装置。该装置在应用中减少了劳动强度、提高了安全系数和检泵成功率,取得了较好的社会效益和经济效益,具有较强的推广价值。 In view of the current situation of labor-intensive and unsafe in SPB-type jet pump self-test pump, a new type of jet pump fishing device is developed by applying the principle that the fixed pulley changes the direction of the force. The device reduces the labor intensity in the application, improves the safety factor and the pump success rate, and has achieved good social and economic benefits, and has strong promotion value.