砂石系統(tǒng)生產(chǎn)能力的確定

1、砂石系統(tǒng)生產(chǎn)能力的確定一、選定工作制度根據(jù)系統(tǒng)性質(zhì)及供料、供水、供電、設備檢修等條件確定。1、月工作天數(shù)：一般為25 天。2、日工作班數(shù)： 2 班或 3 班作業(yè)。3、日工作小時：由日工作班數(shù)和各部位生產(chǎn)情況確定。4、毛料采運時間： 根據(jù)要求的開采強度， 采運設備的生產(chǎn)能力選定。5、半成品加工時間：要求超徑石處理、予篩分、粗碎、中碎的時間一致。 3 班作業(yè)為 1520 小時； 2 班作業(yè)為 1114 小時。6、成品篩洗時間： 3 班作業(yè)為 20 小時； 2 班作業(yè)為 1214 小時。7、人工制砂時間：要求3 班 24 小時作業(yè)，以求產(chǎn)品粒度的穩(wěn)定。二、系統(tǒng)生產(chǎn)能力的確定1、系統(tǒng)總生產(chǎn)能力的確定：

2、主要根據(jù)混凝土澆筑月高峰強度、混凝土級配、各種粒徑的需要量以及生產(chǎn)加工損耗等因素進行綜合考慮確定。按以下公式計算：Q·a· k·k1系統(tǒng)總生產(chǎn)能力： P =(t/h)M·N式中： Q 混凝土澆筑月高峰強度；(m3/ 月)a 每立方米混凝土所需的砂石料；(t/m 3) 常取 2.25 t/m 3k 日生產(chǎn)不均勻系數(shù)；常取1.25k1 混凝土澆筑系數(shù)；常取1.03M 月工作天數(shù)；常取25 天N 日工作小時數(shù)；按工作制度選定。2、系統(tǒng)毛料處理能力： Pm = P/ (t/h)=k2·k3·k4·k5·1+（ k2

3、3;k3）-1式中： P系統(tǒng)總生產(chǎn)能力； (t/h)成品生產(chǎn)率；常取0.8 0.9k 2粉砂流失系數(shù)； 1.1 1.3k 3轉(zhuǎn)運損失系數(shù)； 1.02 1.03k 4沖洗損失系數(shù)； 1.03 1.1k 5級配不平衡系數(shù)； 1.0 1.1毛料的含砂率。3、成品礫石（碎石）生產(chǎn)能力：P = P（1） k ·kZ(t/h)SS成品砂的生產(chǎn)能力： P r = P ·· kr ·kZ(t/h)式中： kS礫石加工（篩洗、轉(zhuǎn)運）損耗系數(shù)；kr 砂料加工（篩洗、轉(zhuǎn)運、流失）損耗系數(shù)；kZ砂石料成品儲存系數(shù)；確定天然砂礫石毛料開采總量V0· 0·K實體

4、開挖總量： V =3（萬 m）A0·（ 1K ）（ K ）（ K ）1233式中： V0砂或礫石控制粒徑的需要量； （萬 m）0砂或礫石控制粒徑的容重；33毛料的天然容重；一般砂取1.5 t/m ，礫石取 1.6t/mK 級配變化系數(shù)；常取1.1A0砂或礫石控制粒徑的天然含量；K1開采損耗系數(shù)；水下開采：砂取0.35 ，礫石取 0.05 ；水上開采：砂取0.15 ，礫石取 0.03 ；K2運輸、堆存損耗系數(shù)；常取0.1K3篩分加工損耗系數(shù)；砂取0.15 ，礫石取 0.03確定砂礫石料堆料場容量1、 確定砂礫石料成品堆料場容量；根據(jù)混凝土高峰期最高月澆筑強度，砂料脫水溫控要求確定：3砂

5、石料成品料場容積： VZ=QH·A·K2/3K 1（萬 m）3式中： QH混凝土最高月澆筑強度； （萬 m/ 月）A 1 m3混凝土所需的砂石料；一般為1.5m3砂石料K2級配變化系數(shù)； 1.1 1.5K1 活庫容與總庫容之比；依地形情況選擇，平地0.552、確定砂礫石毛料堆場容積3毛料堆場容積： V 毛=（Q1Q2）n·K（萬 m）3式中： Q1毛料持續(xù)開采高峰月平均強度； （萬 m/ 月）3Q2相應的月篩分強度； （萬 m/ 月）n 持續(xù)生產(chǎn)月數(shù)；K 毛料儲存系數(shù)；（1.1 1.2 ）3、考慮受汛期的影響，按下式進行堆料場容積的效核計算；VS+VmVZ+QSB

6、A·KZ3式中： VS 汛期毛料開采量； （萬 m）3Vm 毛料堆場儲存量；（萬 m）3V Z 成品砂石料堆場總量（活容積） ；（萬 m）B 每 1 m3混凝土所需的毛料量；A 每 1 m3混凝土所需的成品砂石料；KZ 級配變化系數(shù)； 1.1 1.53QS 汛期混凝土澆筑總量； （萬 m）膠帶機功率計算一、傳動滾筒軸功率計算：1、傳動滾筒軸功率計算：N0=（N1+N2+N3）k3·k4+N4（kw）式中： N0傳動滾筒軸功率； （kw）N1輸送帶及托輥轉(zhuǎn)動部分運轉(zhuǎn)功率；根據(jù)帶寬B(mm)帶速 V(m/s) 、膠帶機水平長度Lh(m) 查表（表 1表 4）N2物料水平運輸功率

7、（kw）；根據(jù)膠帶機輸送量Q(t/h) 、膠帶機水平長度Lh(m)查表（表 5表 7）N3物料垂直提升功率（kw）；根據(jù)膠帶機輸送量Q(t/h) 、物料提升高度H(m)查表（表 8） N4卸料器及導料槽附加功率： （根據(jù)帶寬 B 值、卸料器個數(shù) n 值、導料槽長度 L 值查表 9 確定） （kw）k3附加功率系數(shù)；（根據(jù)膠帶機水平長度Lh 值和傾角值查表 10 選定）k4卸料功率系數(shù)： 光面滾筒取 1.16 ，膠面滾筒取 1.11 ；2、電動機功率計算：電動機功率： N=K·N0/ 式中： K功率備用系數(shù)，一般取1.4 ；N0傳動滾筒軸功率； （kw）總傳動效率：光面滾筒取0.88

8、，膠面滾筒取 0.9 ；膠帶機極限傾角干砂 15；濕砂 27；濕礫石 22 ；篩過的干礫石 18 ；碎石和未篩過的礫石20；B=500mm轉(zhuǎn)動部分運轉(zhuǎn)功率 N1 值表表 1（kw）V清潔、干燥少量塵埃、正常濕度大量塵埃、濕度大（ m/s）L h1.01.251.62.01.01.251.62.01.01.251.62.0(m)100.060.0840.1070.1340.100.1250.160.200.1340.1680.2140.2682070.1680.2140.2680.200.2500.320.400.2680.3360.4280.5360.133040.2510.3220.4020

9、.300.3750.480.600.4020.5040.6420.8040.204010.3350.4290.5360.400.500.640.800.5360.6720.8561.0720.265080.4190.5360.6700.500.6250.801.000.6700.841.0701.340.336050.5030.6430.8040.600.750.961.200.8041.0081.2841.6080.407020.5860.7510.9380.700.8751.121.400.9381.1761.4981.88760.468090.6700.8581.0620.801.001

10、.281.601.0621.3441.7122.1440.539060.7540.9651.2060.901.1251.441.801.2061.5121.9262.4120.603B=650mm轉(zhuǎn)動部分運轉(zhuǎn)功率N1 值表表 2（kw）V清潔、干燥少量塵埃、正常濕度大量塵埃、濕度大（ m/s）L h(m)1.01.251.62.01.01.251.62.01.01.251.62.0100.080.1030.1310.1640.1240.1550.1980.2480.1650.2060.2640.3302020.2050.2620.3280.2480.3100.3970.4960.3300.41

11、30.5280.6600.163040.3080.3940.4920.3720.4650.5950.7440.4950.6190.7920.9900.244060.4100.5250.6560.4960.6200.7940.9920.6600.8251.0561.320.325080.5130.6560.8200.6200.7750.9921.2400.8251.0311.3201.650.416000.6150.7870.9840.7440.9301.1901.4880.9901.2381.5841.980.497020.7180.9181.1480.8681.0851.3891.7361.

12、1551.4441.8482.310.578040.8201.0501.3120.9921.241.5871.9841.3201.6502.1122.640.659060.9231.1811.4761.1161.3951.7862.2321.4851.8562.3762.970.738B=800mm轉(zhuǎn)動部分運轉(zhuǎn)功率N1 值表表 3（kw）V清潔、干燥少量塵埃、正常濕度大量塵埃、濕度大（ m/s）L h1.01.251.62.01.01.251.62.01.01.251.62.0(m)100.110.1380.1760.220.1650.2060.2640.330.220.2750.3520.4

13、4200.220.2750.3520.440.3300.4130.5280.660.440.5500.7040.88300.330.4130.5280.660.4950.6190.7920.990.660.8251.0561.32400.440.5500.7040.880.6600.8251.0561.320.881.1001.4081.76500.550.6880.8801.100.8251.0311.3201.651.101.3751.7602.20600.660.8251.0561.320.9901.2381.5841.981.321.6502.1122.64700.770.9631.2

14、321.541.1551.4441.8482.311.541.9252.4643.08800.881.1001.4081.761.3201.6502.1122.641.762.2002.8163.52900.991.2381.5841.981.4851.8562.3762.971.982.4753.1683.96B=1000mm轉(zhuǎn)動部分運轉(zhuǎn)功率N1 值表表 4（kw）V清潔、干燥少量塵埃、正常濕度大量塵埃、濕度大（ m/s）L h1.01.251.62.01.01.251.62.01.01.251.62.0(m)100.150.1910.2450.3060.2290.2860.3660.458

15、0.3060.3830.4900.6122030.3830.4900.6120.4580.5730.7330.9160.6120.7650.9801.2240.303060.5740.7340.9180.6870.8591.0991.3740.9181.1481.4691.8360.454090.7650.9801.2240.9161.1451.4661.8321.2241.5301.9582.4480.615020.9561.2241.5301.1451.4311.8322.2901.531.9132.4483.0600.766051.1481.4691.8361.3741.7182.198

16、2.7481.8362.2952.9383.6720.917081.3391.7142.1421.6032.0042.5653.2062.1422.6783.4274.2841.078011.5301.9582.4481.8322.2902.9313.6622.4483.0603.9174.8961.229041.7212.2032.7542.0612.5763.304.1222.7543.4434.4065.5081.377清潔、干燥條件下物料水平運輸功率N2 值表表 5（kw）Q102030405060708090100(t/h)L100.005450.01090.01640.0220.0

17、2750.03270.03820.04360.04910.0545200.01090.02180.0330.0440.05450.06540.07630.08720.09810.109300.016350.03270.04910.0660.08180.09810.11450.13080.14720.1635400.02180.04360.0660.0880.1090.13080.15260.17440.19620.218500.027250.05450.0820.1090.13630.16350.19080.21800.24530.2725600.03270.06540.09810.1310.

18、16350.19620.22890.26160.29430.327700.038150.07630.1150.1530.19080.22890.26710.30520.34340.3815800.04360.08720.1310.1750.2180.26160.30520.34880.39240.436900.049050.09810.14720.1970.24530.29430.34340.39240.44150.4905少量塵埃、正常濕度條件下物料水平運輸功率N2 值表表 6（kw）Q102030405060708090100(t/h)100.00820.01640.02450.03270

19、.04090.04910.05720.06540.07360.0817200.01640.03270.04910.06540.08170.09810.11440.13080.14700.1634300.02450.04910.07360.09810.12260.14810.17160.19610.22060.2451400.03270.06540.09810.13080.16340.19610.22880.26150.29420.3268500.04090.08170.12260.16340.20430.24510.2860.32680.36770.4085600.04910.09810.14

20、710.19610.24510.29420.34320.39220.44120.4902700.05720.11440.17160.22880.2860.34320.40040.45760.51470.5719800.06540.13080.19610.26150.32680.39220.45760.52290.58830.6536900.07360.14710.22060.29420.36770.44120.51470.58830.66180.7353大量塵埃、濕度大條件下物料水平運輸功率N2 值表表 7（kw）Q102030405060708090100(t/h)100.01090.021

21、80.03270.04360.05450.06540.07630.08720.09810.1089200.02180.04260.06540.08710.10890.13070.15250.17430.19610.2178300.03270.06540.09810.13070.16340.19610.22870.26140.29410.3267400.04360.08720.13070.17430.21780.26140.30500.34850.39210.4356500.05450.10890.16340.21780.27230.32670.38120.43560.49010.5445600

22、.06540.13070.19610.26140.32670.39210.45740.52280.58810.6534700.07630.15250.22870.30500.38120.45740.53370.6100.68610.7623800.08720.17430.26140.34850.43560.52280.60990.69700.78410.8712900.09810.19610.29410.39210.49010.58810.68610.78410.88210.9801物料垂直提升運輸功率N3 值表表 8（kw）102030405060708090100Q(t/h)0.02730

23、.05460.08190.10920.13650.16380.19110.21840.24570.273120.05460.10920.16380.21840.27300.32760.38220.43680.49140.54630.08190.16380.24570.32760.40950.49140.57330.65520.73710.81940.10920.21840.32760.43680.5460.65520.76440.87360.98281.09250.13650.2730.40950.5460.68250.8190.95551.0921.22851.36560.16380.327

24、60.49140.65520.8190.98281.14661.31041.47421.63870.19110.38220.57330.76440.95551.14661.33771.52881.71991.91180.21840.43680.65520.87361.0921.31041.52881.74721.96562.18490.24570.49140.73710.98281.22851.47421.71991.96562.21132.457卸料器及導料槽附加功率 N4 值表表 9 （kw）帶寬 B（mm）500650800100012001400N卸料器0.3n0.4n0.5n1.0n4（kw）導料槽0