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①揚(yáng)程是指抽沙泵在單位重量的液體通過(guò)泵后所獲得能量。其值等于泵的吐出口總水頭與吸入口總水頭的數(shù)量。以符號(hào)H表示，單位為米液柱（m）。
H=Hd-Hs
式中：Hd=吐出口總水頭（m） Hs=吸入口總水頭（m）
HS=Z1-HfL1-Hi1
式中：HfL1=吸入口管段沿程水頭損失（m） Hi1=吸入口管段總局部水頭損失（m）Z1=吸入口液面高度 （m）Hd=Z2+HfL1+Hi2+ HV
式中：Z2=吐出口管段沿程水頭損失（m） HfL2=吐出口管段總局部水頭損失（i2=吐出口液面高度(m) V=吐出口水頭擴(kuò)散損失
式中：V2=管路平均流速（m/s） D=管路內(nèi)徑（m） g=重力加速度 f=阻力系數(shù) L=管路當(dāng)量長(zhǎng)度（包括彎頭和閥門損失當(dāng)量）
F值可由公式計(jì)算得出，其中K為絕對(duì)粗糙度（mm）,Re為雷諾數(shù)（純數(shù)值）。

① lift means after pumping sand pump unit weight of liquid through the pump for energy. Its value is equal to the total number of the pump head discharge port and the suction port of the total head. Symbol H represented in meters liquid column (m).
H = Hd-Hs
Where: Hd = spout total head (m) Hs = the inlet total head (m)
HS = Z1-HfL1-Hi1
Where: HfL1 = section along the inlet pipe head loss (m) Hi1 = Administration of the Ministry of the inlet pipe head loss (m) Z1 = suction port surface height (m) Hd = Z2 + HfL1 + Hi2 + HV
Where: Z2 = discharge outlet pipe sections along the head loss (m) HfL2 = discharge outlet pipe section Administration section head loss (i2 = spout surface height (m) V = spit saliva diffusion head loss
Where: V2 = average line velocity (m / s) D = pipe inside diameter (m) g = gravitational acceleration resistance coefficient f = L = line equivalent length (including elbows and valves loss eq)
F value calculated by the formula, wherein K is an absolute roughness (mm), Re is the Reynolds number (pure numeric).