FESTO手拉阀@festo电磁阀@festo资料下载 FESTO手拉阀@festo电磁阀@festo资料下载

FESTO手拉阀@festo电磁阀@festo资料下载
产品介绍
原理：通电时，电磁线圈产生电磁力把关闭件从阀座上提起，阀门打开；断电时，电磁力消失，弹簧把关闭件压在阀座上，阀门关闭。
特点：在真空、负压、零压时能正常工作，但通径一般不超过25mm。
费斯托FESTO分步直动式电磁阀：
原理：它是一种直动和先导式相结合的原理，当入口与出口没有压差时，通电后，电磁力直接把先导小阀和主阀关闭件依次向上提起，阀门打开。当入口与出口达到启动压差时，通电后，电磁力先导小阀，主阀下腔压力上升，上腔压力下降，从而利用压差把主阀向上推开；断电时，先导阀利用弹簧力或介质压力推动关闭件，向下移动，使阀门关闭。
特点：在零压差或真空、高压时亦能可*动作，但功率较大，要求必须水平安装。
费斯托FESTO先导式电磁阀：
原理：通电时，电磁力把先导孔打开，上腔室压力迅速下降，在关
闭件周围形成上低下高的压差，流体压力推动关闭件向上移动，阀门打开；断电时，弹簧力把先导孔关闭，入口压力通过旁通孔迅速腔室在关阀件周围形成下低上高的压差，流体压力推动关闭件向下移动，关闭阀门。
特点：流体压力范围上限较高，可任意安装（需定制）但必须满足流体压差条件。
2.电磁阀从阀结构和材料上的不同与原理上的区别，分为六个分支小类：
直动膜片结构、分步直动膜片结构、先导膜片结构、直动活塞结构、分步直动活塞结构、先导活塞结构。
FESTO手拉阀@festo电磁阀@festo资料下载
产品详细说明
一、根据管道参数选择电磁阀的：通径规格（即DN）、接口方式
1、按照现场管道内径尺寸或流量要求来确定通径（DN）尺寸。
2、接口方式，一般>DN50要选择法兰接口，≤DN50则可根据用户需要自由选择。
二、根据流体参数选择电磁阀的：材质、温度组
1、腐蚀性流体：宜选用耐腐蚀电磁阀和全不锈钢；食用超净流体：宜选用食品级不锈钢材质电磁阀。
2、高温流体：要选择采用耐高温的电工材料和密封材料制造的电磁阀，而且要选择活塞式结构类型的。
FESTO手拉阀@festo电磁阀@festo资料下载
产品型号
SLM-40-205-KF-A-G-NV-PH-E-2I货10P-10-4A-MP-N-D-JM2C+U
SLM-40-105-KF-A-G-NV-PH-E-2I特10P-10-4A-FB-R-U-4C
SLM-40-95-KF-A-G-NV-PH-E-2I价10P-10-4A-MP-N-B-JMCC
SLM-40-195-KF-A-G-NV-PH-E-2I,10P-10-4A-MP-N-D-JMCC
SLM-40-295-KF-A-G-NV-PH-E-2IF10P-10-4A-MP-N-D-JMCC+U
SLM-40-395-KF-A-G-NV-PH-E-2IE10P-10-4A-MP-R-D-J3M
SLM-40-495-KF-A-G-NV-PH-E-2IS10P-10-4A-MP-R-D-J3M+A
SLM-40-595-KF-A-G-NV-PH-E-2IT10P-10-4A-MP-R-D-J3M+U
SLM-40-695-KF-A-G-NV-PH-E-2IO10P-10-4A-MP-R-D-JMCC
SLM-40-795-KF-A-G-NV-PH-E-2I报10P-10-4A-MP-R-V-3MC+UYA
SLM-40-895-KF-A-G-NV-PH-E-2I价10P-10-4A-MP-R-V-DCDC+R
SLM-40-995-KF-A-G-NV-PH-E-2I中10P-10-4B-MP-N-B-3ML+UR-F
SLM-40-1095-KF-A-G-NV-PH-E-2I心10P-10-4B-MP-R-A-3JL+ZW5B
SLM-40-1195-KF-A-G-NV-PH-E-2IT10P-10-4B-MP-R-V-MMJJ+HRA
SLM-40-1295-KF-A-G-NV-PH-E-2I：10P-10-4B-MP-R-X-4D+U
SLM-40-1395-KF-A-G-NV-PH-E-2IO10P-10-4C-AO-N-Y-JLJL+V
SLM-40-1495-KF-A-G-NV-PH-E-2I210P-10-4C-AO-R-Y-4M+P4
SLM-40-15-KF-A-G-NV-PH-E-2II10P-10-4C-AO-R-Y-4M+V
SLM-40-25-KF-A-G-NV-PH-E-2I-10P-10-4C-AO-R-Y-JLJL+P4
SLM-40-35-KF-A-G-NV-PH-E-2I610P-10-4C-FB-R-Z-JM2L+UT
SLM-40-45-KF-A-G-NV-PH-E-2II10P-10-4C-IC-R-U-JMML+U4DA
SLM-40-55-KF-A-G-NV-PH-E-2I510P-10-4C-MP-N-V-4M+YA
SLM-40-65-KF-A-G-NV-PH-E-2I510P-10-4C-MP-R-D-J3M+UR
SLM-40-75-KF-A-G-NV-PH-E-2IZ10P-10-4C-MP-R-D-JMCC+UR
SLM-40-85-KF-A-G-NV-PH-E-2I310P-10-4C-MP-R-U-4J
SLM-12-500-KF-A-G-NV-PH-HV-HH-E-2I510P-10-4C-MP-R-Y-4C+VZ
SLM-12-400-KF-A-G-NV-PH-HV-HH-E-2I610P-10-4R-MP-R-B-4C-H
SLM-12-300-KF-A-G-NV-PH-HV-HH-E-2I,10P-10-6A-MP-N-B-JMMMMC+U
SLM-12-200-KF-A-G-NV-PH-HV-HH-E-2I物10P-10-6A-MP-N-Y-4MTM+TURA
SLM-12-100-KF-A-G-NV-PH-HV-HH-E-2I美10P-10-6A-MP-R-B-6C+HR
SLM-12-90-KF-A-G-NV-PH-HV-HH-E-2I价10P-10-6A-MP-R-B-CMMCCM+THR
SLM-12-80-KF-A-G-NV-PH-HV-HH-E-2I廉10P-10-6A-MP-R-B-J4MC
SLM-12-70-KF-A-G-NV-PH-HV-HH-E-2I,10P-10-6A-MP-R-U-6M+U
SLM-12-60-KF-A-G-NV-PH-HV-HH-E-2I您10P-10-6B-MP-R-Y-6C+MZURA
SLM-12-50-KF-A-G-NV-PH-HV-HH-E-2I的10P-10-6C-MP-N-U-6M+ZHRB
SLM-12-44-KF-A-G-NV-PH-HV-HH-E-2I订10P-10-8A-D1-R-V-5C3L+GEHNAA
SLM-12-450-KF-A-G-NV-PH-HV-HH-E-2I货10P-10-8A-D1-R-B-4C4L+GENAA
SLM-12-350-KF-A-G-NV-PH-HV-HH-E-2I首10P-10-8A-D1-R-B-8C+GENAA
SLM-12-250-KF-A-G-NV-PH-HV-HH-E-2I选10P-10-8A-D1-R-B-8C-EX2+G
SLM-12-150-KF-A-G-NV-PH-HV-HH-E-2I,10P-10-8A-D1-R-V-8G+GEZHNAA-E
SLM-12-160-KF-A-G-NV-PH-HV-HH-E-2I提10P-10-8A-D1-R-Y-8C+GEMZUA
SLM-12-170-KF-A-G-NV-PH-HV-HH-E-2I供10P-10-8A-D2-R-B-8C+GCHND
SLM-12-180-KF-A-G-NV-PH-HV-HH-E-2I选10P-10-8A-D2-R-V-8C+GCH
SLM-12-190-KF-A-G-NV-PH-HV-HH-E-2I型10P-10-8A-D2-R-V-J3C4L+GEGQDTNAA
SLM-12-140-KF-A-G-NV-PH-HV-HH-E-2I,10P-10-8A-D2-R-V-M7C+GEGQDTNAA
SLM-12-130-KF-A-G-NV-PH-HV-HH-E-2I优10P-10-8A-FB-R-B-8C+H
SLM-12-120-KF-A-G-NV-PH-HV-HH-E-2I质10P-10-8A-FB-R-B-8C+U
SLM-12-110-KF-A-G-NV-PH-HV-HH-E-2I真10P-10-8A-FB-R-V-8C+H
SLM-12-220-KF-A-G-NV-PH-HV-HH-E-2I空10P-10-8A-FB-R-Y-5CTCC
SLM-12-260-KF-A-G-NV-PH-HV-HH-E-2I技10P-10-8A-FB-R-Y-8C
SLM-12-270-KF-A-G-NV-PH-HV-HH-E-2I术10P-10-8A-MP-N-U-8M+ZHRA
SLM-12-280-KF-A-G-NV-PH-HV-HH-E-2I,10P-10-8A-MP-R-A-8C
SLM-12-290-KF-A-G-NV-PH-HV-HH-E-2I价10P-10-8A-MP-R-B-6MCC+THR-E
SLM-12-320-KF-A-G-NV-PH-HV-HH-E-2I格10P-10-8A-MP-R-B-8C
SLM-12-360-KF-A-G-NV-PH-HV-HH-E-2I优10P-10-8A-MP-R-B-MCCMCCMC+THR
SLM-12-380-KF-A-G-NV-PH-HV-HH-E-2I惠10P-10-8A-MP-R-U-8C+UA
SLM-12-425-KF-A-G-NV-PH-HV-HH-E-2I，10P-10-8A-MP-R-V-8C+RB
SLM-12-325-KF-A-G-NV-PH-HV-HH-E-2I品10P-10-8A-MP-R-V-8M+HRA
SLM-12-225-KF-A-G-NV-PH-HV-HH-E-2I质10P-10-8A-MP-R-Y-4MLLTM+HRA
SLM-12-125-KF-A-G-NV-PH-HV-HH-E-2I保10P-10-8A-N2-R-Y-8C+GCMND
SLM-12-475-KF-A-G-NV-PH-HV-HH-E-2I证10P-10-8B-ETP-N-V-8N+GQD
SLM-12-375-KF-A-G-NV-PH-HV-HH-E-2I，10P-10-8B-MP-R-Y-8C+MZURA
SLM-12-275-KF-A-G-NV-PH-HV-HH-E-2I销10P-10-8B-N2-N-Z-8C+GAPB
SLM-12-175-KF-A-G-NV-PH-HV-HH-E-2I售10P-10-8C-D1-R-V-8C+GEU
SLM-12-410-KF-A-G-NV-PH-HV-HH-E-2IF10P-10-8C-D2-R-B-8C+GC
SLM-12-310-KF-A-G-NV-PH-HV-HH-E-2IE10P-10-8C-DI-R-Y-8C+GFP
SLM-12-210-KF-A-G-NV-PH-HV-HH-E-2IS10P-10-8C-ET-R-Y-8M+PZ
SLM-12-420-KF-A-G-NV-PH-HV-HH-E-2IT10P-10-8C-MP-N-B-5M3C+Y
SLM-12-430-KF-A-G-NV-PH-HV-HH-E-2IO10P-10-8C-MP-N-Z-MMDLS3C+YA
SLM-12-330-KF-A-G-NV-PH-HV-HH-E-2I有10P-10-8C-MP-R-A-7ML+R
SLM-12-230-KF-A-G-NV-PH-HV-HH-E-2I多10P-10-8C-MP-R-B-8C+HRA
SLM-12-440-KF-A-G-NV-PH-HV-HH-E-2I年10P-10-8C-MP-R-Y-7CL+RHZ
SLM-12-340-KF-A-G-NV-PH-HV-HH-E-2I。10P-14-4A-AE-R-V-4M+U
SLM-12-240-KF-A-G-NV-PH-HV-HH-E-2I上10P-14-4A-MP-N-D-JM2C+U
SLM-12-460-KF-A-G-NV-PH-HV-HH-E-2I海10P-14-4A-MP-R-A-4C+HRA
SLM-12-470-KF-A-G-NV-PH-HV-HH-E-2IF10P-14-4A-MP-R-B-3CL+UR
SLM-12-370-KF-A-G-NV-PH-HV-HH-E-2IE10P-14-4A-MP-R-B-3JC+URA
SLM-12-480-KF-A-G-NV-PH-HV-HH-E-2IS10P-14-4A-MP-R-B-JCJJ+URA
SLM-12-490-KF-A-G-NV-PH-HV-HH-E-2IT10P-14-4A-MP-R-B-JCJL+URA
SLM-12-390-KF-A-G-NV-PH-HV-HH-E-2IO10P-14-4A-MP-R-B-JJCL+URA
SLM-12-485-KF-A-G-NV-PH-HV-HH-E-2I办10P-14-4B-IC-R-B-4M+H4DA
SLM-12-385-KF-A-G-NV-PH-HV-HH-E-2I事10P-14-4B-MP-N-B-4C
SLM-12-285-KF-A-G-NV-PH-HV-HH-E-2I处10P-14-4B-MP-N-Y-JTJL+ZUR
SLM-12-185-KF-A-G-NV-PH-HV-HH-E-2I与10P-14-4B-MP-N-Z-5JLTJ+ZUR
SLM-12-465-KF-A-G-NV-PH-HV-HH-E-2I我10P-14-4B-MP-R-A-3JL+R
SLM-12-365-KF-A-G-NV-PH-HV-HH-E-2I司10P-14-4B-MP-R-A-4J+R
SLM-12-265-KF-A-G-NV-PH-HV-HH-E-2I达10P-14-4C-AZ-N-Y-4M+PB
SLM-12-165-KF-A-G-NV-PH-HV-HH-E-2I成10P-14-4C-MP-N-B-4C+ZH
SLM-12-455-KF-A-G-NV-PH-HV-HH-E-2I长10P-14-4C-MP-N-Y-4L+PZRB
SLM-12-355-KF-A-G-NV-PH-HV-HH-E-2I期10P-14-4C-MP-R-Y-3CL+UY
SLM-12-255-KF-A-G-NV-PH-HV-HH-E-2I的10P-14-6A-FBR-H-JMSLJJ+PA
SLM-12-155-KF-A-G-NV-PH-HV-HH-E-2I合10P-14-6A-IC-R-A-6M+TH6DA-E
SLM-12-445-KF-A-G-NV-PH-HV-HH-E-2I作10P-14-6A-MP-N-V-MC4M+U
SLM-12-345-KF-A-G-NV-PH-HV-HH-E-2I,10P-14-6A-MP-R-Y-MC4M+R
SLM-12-245-KF-A-G-NV-PH-HV-HH-E-2I具10P-14-6B-FB-R-Y-LG3CL+P
SLM-12-145-KF-A-G-NV-PH-HV-HH-E-2I有10P-14-6B-MP-N-B-6C-ZHR
SLM-12-435-KF-A-G-NV-PH-HV-HH-E-2I雄10P-14-6B-MP-R-B-2C3JL+Y
SLM-12-335-KF-A-G-NV-PH-HV-HH-E-2I厚10P-14-6B-MP-R-B-6J+URA
SLM-12-235-KF-A-G-NV-PH-HV-HH-E-2I的10P-14-6B-MP-R-B-JCJJCL+HRA
SLM-12-135-KF-A-G-NV-PH-HV-HH-E-2I资10P-14-6B-MP-R-Y-5CL+URA
SLM-12-415-KF-A-G-NV-PH-HV-HH-E-2I金10P-14-6B-MP-R-Y-6C+URA
SLM-12-315-KF-A-G-NV-PH-HV-HH-E-2I库10P-14-6B-MP-R-Y-CCM3L+URA
SLM-12-215-KF-A-G-NV-PH-HV-HH-E-2I存10P-14-6C-MP-N-U-6J+US
SLM-12-115-KF-A-G-NV-PH-HV-HH-E-2I,10P-14-6C-MP-N-V-5MC+H
SLM-12-405-KF-A-G-NV-PH-HV-HH-E-2I专10P-14-6C-MP-N-V-5MG+H
SLM-12-305-KF-A-G-NV-PH-HV-HH-E-2I业10P-14-6C-MP-N-Y-2M3CL
SLM-12-205-KF-A-G-NV-PH-HV-HH-E-2I的10P-14-6C-MP-N-Y-2M3CL+VZB
SLM-12-105-KF-A-G-NV-PH-HV-HH-E-2I工10P-14-6C-MP-N-Y-6C+Z
SLM-12-95-KF-A-G-NV-PH-HV-HH-E-2I程10P-14-6C-MP-R-A-4MCC+ZUR
SLM-12-195-KF-A-G-NV-PH-HV-HH-E-2I师10P-14-6C-MP-R-U-6M+A
SLM-12-295-KF-A-G-NV-PH-HV-HH-E-2I210P-14-6C-MP-R-Y-4MLM+M
SLM-12-395-KF-A-G-NV-PH-HV-HH-E-2I410P-14-6C-MP-R-Y-6C+UY
SLM-12-495-KF-A-G-NV-PH-HV-HH-E-2I小10P-14-6C-MP-R-Z-6C+UT
SLM-12-45-KF-A-G-NV-PH-HV-HH-E-2I时10P-14-6C-MP-R-Z-MLMJJM+UR
SLM-12-55-KF-A-G-NV-PH-HV-HH-E-2I为10P-14-8A-AC-R-V-8J+UA
SLM-12-65-KF-A-G-NV-PH-HV-HH-E-2I你10P-14-8A-AE-R-Y-JLJLJLJL+ZU
SLM-12-75-KF-A-G-NV-PH-HV-HH-E-2I排10P-14-8A-CC-R-U-8J+GCZUA
SLM-12-85-KF-A-G-NV-PH-HV-HH-E-2I优10P-14-8A-D1-N-A-3JC4L-GCUA
SLM-16-800-KF-A-G-NV-PH-HV-HH-E-2I解10P-14-8A-D1-N-A-JJCC4L+GCUA
SLM-16-700-KF-A-G-NV-PH-HV-HH-E-2I难10P-14-8A-D1-N-Z-8C+GEUNC
SLM-16-600-KF-A-G-NV-PH-HV-HH-E-2I,10P-14-8A-D2-R-B-3CLGGCJ+GEZNBA
SLM-16-500-KF-A-G-NV-PH-HV-HH-E-2I竭10P-14-8A-D2-R-B-4G4L+GE
SLM-16-400-KF-A-G-NV-PH-HV-HH-E-2I诚10P-14-8A-D2-R-B-8G+GE
SLM-16-300-KF-A-G-NV-PH-HV-HH-E-2I与10P-14-8A-ETP-N-V-3G5L
SLM-16-200-KF-A-G-NV-PH-HV-HH-E-2I你10P-14-8A-ET-R-B-6HLL+A
SLM-16-100-KF-A-G-NV-PH-HV-HH-E-2I长10P-14-8A-IC-R-V-6JLL+UA
SLM-16-90-KF-A-G-NV-PH-HV-HH-E-2I期10P-14-8A-IC-R-V-8J+UA
SLM-16-80-KF-A-G-NV-PH-HV-HH-E-2I的10P-14-8A-MP-R-A-8C+HRA
SLM-16-70-KF-A-G-NV-PH-HV-HH-E-2I合10P-14-8A-MP-R-A-8M+HRA
SLM-16-60-KF-A-G-NV-PH-HV-HH-E-2I作10P-14-8A-MP-R-B-8J+UR
SLM-16-50-KF-A-G-NV-PH-HV-HH-E-2I,10P-14-8A-MP-R-U-8C
SLM-16-44-KF-A-G-NV-PH-HV-HH-E-2I公10P-14-8B-D1-N-B-8C+GCZH
SLM-16-650-KF-A-G-NV-PH-HV-HH-E-2I司10P-14-8B-D1-R-A-5C3L+GE
SLM-16-550-KF-A-G-NV-PH-HV-HH-E-2I的10P-14-8B-D1-R-A-8C+GC
SLM-16-450-KF-A-G-NV-PH-HV-HH-E-2I每10P-14-8B-D1-R-A-8C+GE
SLM-16-350-KF-A-G-NV-PH-HV-HH-E-2I位10P-14-8B-D1-R-A-8M+GENA
SLM-16-250-KF-A-G-NV-PH-HV-HH-E-2I员10P-14-8B-D1-R-B-5C3L+GE
SLM-16-150-KF-A-G-NV-PH-HV-HH-E-2I工10P-14-8B-D1-R-B-8C+GE
SLM-16-160-KF-A-G-NV-PH-HV-HH-E-2I珍10P-14-8B-D1-R-K-8C+GEM
SLM-16-170-KF-A-G-NV-PH-HV-HH-E-2I惜10P-14-8B-ET-N-Y-4JC3L+M
SLM-16-180-KF-A-G-NV-PH-HV-HH-E-2I你10P-14-8B-ET-N-Y-CCJCJCLL+M
SLM-16-190-KF-A-G-NV-PH-HV-HH-E-2I的10P-14-8B-FB-N-B-8C+ZH
SLM-16-140-KF-A-G-NV-PH-HV-HH-E-2I每10P-14-8B-FB-R-K-8C+M
SLM-16-130-KF-A-G-NV-PH-HV-HH-E-2I一10P-14-8B-IC-N-K-7CN+MU7E
SLM-16-120-KF-A-G-NV-PH-HV-HH-E-2I次10P-14-8B-MP-N-B-6CLL+ZHR
SLM-16-110-KF-A-G-NV-PH-HV-HH-E-2I的10P-14-8B-MP-N-B-8C
SLM-16-220-KF-A-G-NV-PH-HV-HH-E-2I来10P-14-8B-MP-N-B-8C+ZHB
SLM-16-260-KF-A-G-NV-PH-HV-HH-E-2I电10P-14-8B-MP-N-Z-JMMCJTJJ+ZUR
SLM-16-270-KF-A-G-NV-PH-HV-HH-E-2I、10P-14-8B-MP-R-A-7JL+R
SLM-16-280-KF-A-G-NV-PH-HV-HH-E-2I来10P-14-8B-MP-R-B-7JL+URA
SLM-16-290-KF-A-G-NV-PH-HV-HH-E-2I访10P-14-8B-MP-R-B-8J+URA
SLM-16-320-KF-A-G-NV-PH-HV-HH-E-2I!10P-14-8B-MP-R-Y-3C3MLL+URA
SLM-16-360-KF-A-G-NV-PH-HV-HH-E-2I现10P-14-8B-MP-R-Y-4C3ML+URA
SLM-16-380-KF-A-G-NV-PH-HV-HH-E-2I货10P-14-8B-MP-R-Y-5CMLL+URA
SLM-16-560-KF-A-G-NV-PH-HV-HH-E-2I特10P-14-8B-MP-R-Y-5CMML+URA
SLM-16-580-KF-A-G-NV-PH-HV-HH-E-2I价10P-14-8B-MP-R-Y-6CLL+URA
SLM-16-575-KF-A-G-NV-PH-HV-HH-E-2I,10P-14-8B-MP-R-Y-7CL+URA
SLM-16-680-KF-A-G-NV-PH-HV-HH-E-2IF10P-14-8B-MP-R-Y-8M
SLM-16-725-KF-A-G-NV-PH-HV-HH-E-2IE10P-14-8B-N2-N-B-8C+GAZH
SLM-16-625-KF-A-G-NV-PH-HV-HH-E-2IS10P-14-8C-D1-N-B-8C+ZH
SLM-16-525-KF-A-G-NV-PH-HV-HH-E-2IT10P-14-8C-D1-N-Y-5JLLJ+GEUNB
SLM-16-425-KF-A-G-NV-PH-HV-HH-E-2IO10P-14-8C-D1-R-B-7JN+GE
SLM-16-325-KF-A-G-NV-PH-HV-HH-E-2I报10P-14-8C-D1-R-Y-3C5L+GEU
SLM-16-225-KF-A-G-NV-PH-HV-HH-E-2I价10P-14-8C-D1-R-Y-4C4L+GEU
SLM-16-125-KF-A-G-NV-PH-HV-HH-E-2I中10P-14-8C-D1-R-Y-4C4L+GEV
FESTO手拉阀@festo电磁阀@festo资料下载
：朱小姐
QQ： 3269187186
：0
：0
邮箱：3269187186@QQ.com
地址：东莞市南城区莞太路12号中兴大厦510室
欢迎来电咨询选购！
订购流程：
1、客户确认所需采购产品型号发询价单到或0 东方小姐
2、我方会根据询价单型号查询价格以及交货期，拟一份详细正规报价单
3，客户收到报价单并确认型号无误后订购产品
4、报价单负责人根据客户提供型号以及数量拟份销售合同
5、客户收到合同查阅同意后盖章回传并按照合同销售金额汇款到公司开户行
现货：全款 期货：30%货到我司余款结清（广东内余款也可快递代收）
6、我公司财务查到款后，业务员安排发货并通知客户跟踪运单