The utility model provides a speed is carried and is imitated guan tixiao lifting devices under beam -pumping unit well pump, the device include oil -well pump, oil pipe, sand sediment pipe that top -down connected gradually, the chambers of the heart inserts speed and carries the effect pipe in the sand sediment pipe, speed is carried the annular space of imitating between pipe and the sand sediment pipe and is formed the sand setting chamber, and speed is carried and being imitated in the pipe upper end stretches into the oil pipe lower extreme, the inside pressure boost chamber that forms of oil pipe, sand setting chamber cross -sectional area is less than pressure boost chamber cross -sectional area. Sand sediment pipe lower extreme inner wall cup joints to carry in speed imitates theoutside of tubes wall, airtight pressure boost chamber is constituteed jointly in sand setting chamber and pressure boost chamber. Automatic plugging device is connected to the sand sediment pipe lower extreme. The utility model discloses the influence of high gassiness output liquid to the pump efficiency can alleviate, the sand oil recovery can also be taken to this method simultaneously, reduces the influence of sand card.