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洒水车水泵结构及工作原理-j9九游会网址


       洒水泵可起到吸水和加压排水功能,自吸泵可将池塘的水直接吸入罐体内,也可直接从城市街道的消防栓上连接注水,吸入罐体内进行洒水作业。下面就由小编带大家了解下关于洒水车水泵的结构及工作原理吧。
 
 
  洒水车水泵的工作原理如下所示:
 
  1、洒水车水泵采用外混式自吸结构,洒水泵内须存有适量的液体,洒水泵启动后叶轮旋转其进口处产生负压。吸入管路中气体与洒水泵内液体混合通过压出室进入气液分离室。由于气体和液体比重不同气体从液体中分离出来,经出口管路排出,液体在分离室中下没,经回流孔回到叶轮外缘,再次进行气液混合和分离,如此循环直至洒水泵体及吸入管内气体排尽而充满液体而完成自吸过程,洒水泵投入正常输液工作。
 
 
  2、洒水泵工作前,泵内的液体存量必须高于泵轴,因此泵进口处必须接一个向上弯的弯管再接一个水平管和快速接头,快速接头中心线必须高于泵轴中心线300毫米;进口管路系统必须保证不漏气;吸水管的吸入头必须浸没于水下,以免空气吸入水管;出口管道与泵出口连接时必须保证直管长度≥200毫米后再接弯管。
 
  3、洒水车工作时,发动机发出的动力,一部分通过传动系统、行驶系统将动力传至后轮,驱动车辆行驶;另一部分通过取力箱、皮带减速装置带动泵运转。
 
  4、洒水车在运输状态时,取力箱手柄挂空档位,水泵不工作。洒水车在洒水作业时,水泵从水箱中吸水,并将一定压力的水通过管道、阀门输送到车辆前后的洒水装置。
 
  洒水车水泵结构组成部分都有哪些?
 
 
  主要由主动轴、主动齿轮、被动齿轮、机械密封、叶轮、泵体这几部分组成。洒水车水泵采用外混式轴向回液的泵体结构。泵体由吸入室、储液室、回流孔和气液室组成。泵启动后,叶轮将吸入室内所存的液体及吸入管路中的空气一起吸入,并在叶轮内得以完全混合,在离心作用下,混合液体通过压出室进入气液分离室,由于气体比重轻,气体从液体中分离出来,并从出口管中排出,而液体在气液分离室中下沉,经回流孔回到叶轮外缘,进行又一次的气液混合――分离过程,依次循环,直到吸入管内气体排净而充满液体,完成自吸过程,当水流出叶轮后,叶轮中心部分出现真空,吸水池中的水在大气压力作用下经吸水管进入叶轮,由于叶轮不断地旋转,水也不断排出和吸入,形成连续不断的泵水作用。
 
  洒水车的日常维护保养如下所示:
 
 
  (1)汽车底盘和配套泵的维护保养按相应的使用说明书进行。
 
  (2)车辆使用前应按汽车使用说明书的要求进行磨合。
 
  (3)长途转场托运时,车辆前后左右应有固定防滑装置,且四周留有200mm以上空隙,若自行转场时一般应将前喷嘴和后洒水器卸下以防松动丢失。
 
 
  (4)经常检查各出液孔、口有无堵塞现象,发现杂物堵塞时应及时清理干净。
 
  (5)每班作业完毕,应清洗油污、管路卷放整齐,清理现场,关门落锁。
 
  (6)车辆长期不用或冬天存放,应放尽罐体、泵内及管路内余水,存放时应停放在车棚内,擦试干净,以避免暴晒雨淋。
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