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怎么选择合适的压滤机进料泵呢?
添加时间:2020-4-2 15:26:35

压滤机是环保、冶炼等行业常用的过滤设备,有箱式的,有板框式的,运用压滤机必需要配套进料泵,那么这种压滤机进料泵应该选什么样的泵呢?我们得晓得压滤机的特性。


压滤机进料的运用特性是进料时的流量大压力低,到后期bie压时,是流量小扬程高,对进料泵的请求高,因而有以下请求:

    一、泵的进出口应装置阀门、压力表及软衔接抗震节。

    二、在泵的装置次第上,要先装置进出口管路,再固定地脚螺栓,避免衔接管路时对泵产生拉伸性应力,损坏泵。

    三、出口管路间隔压滤机泵装置位置高,应在泵出口处装置止回阀,以防停车时出口高压水锤对泵产生毁坏力和回流招致的叶轮反转。

    四、泵的进出口管路的配置:为减少管道流阻、进步管道的保送效率,泵进、出口管径应大于泵进、出口口径。

    五、为了更能直观看到泵的运转状况,应在泵的出口装置压力表,装置位于泵出口第一个阀门与泵出口法兰之间的直段管路上,否则就没有意义

    六、泵的进出口管路应设重力支撑系统,泵不能接受管道重量,否则时间长了,泵容易发作变形。

    七、回流管的设置:压滤机泵在正常工作状态下,当泵到达一定压力,流量小于额定流量的30%时,此时必需翻开回流管上的阀门停止分流,这样既能稳住压滤机进料的压力,又能确保泵腔内的物料一直坚持含有一定水分的液体状态。否则,压滤机内的压力降落,泵腔中的物料由于憋压,在向心力的作用下使物料甩干,增大了物料与泵的摩擦,缩短泵的运用寿命。

    八、假如是自动控制安装,则倡议在出口管路上装置平安阀,当压力到达一定值后,自动翻开平安阀回流管路。

Filter press is a common filter equipment in environmental protection, smelting and other industries. It has box type and plate frame type. It must be equipped with feed pump when using filter press. What kind of pump should be selected for the feed pump of this filter press? First of all, we need to know the characteristics of the filter press.



The operation characteristic of the filter press feed is that the flow rate is large and the pressure is low when feeding, and the flow rate is small and the head is high when the BIE pressure is in the later stage, and the demand for the feed pump is high, so there are the following requirements:


1、 The inlet and outlet of the pump shall be equipped with valve, pressure gauge and soft joint anti-seismic joint.


2、 In the second place of pump installation, the inlet and outlet pipelines shall be installed first, and then the anchor bolts shall be fixed to avoid tensile stress on the pump and damage to the pump when connecting the pipelines.


3、 The distance between the outlet pipeline and the pump device of the filter press is high. A check valve shall be installed at the outlet of the pump to prevent the high-pressure water hammer at the outlet from damaging the pump and reversing the impeller caused by the backflow when the pump is stopped.


4、 Configuration of pump inlet and outlet pipeline: in order to reduce pipeline flow resistance and improve pipeline delivery efficiency, the inlet and outlet pipe diameters of the pump shall be larger than the inlet and outlet diameters of the pump.


5、 In order to see the operation of the pump more directly, the pressure gauge should be installed at the outlet of the pump. The device is located on the straight line between the first valve at the outlet of the pump and the outlet flange of the pump. Otherwise, it is meaningless


6、 The inlet and outlet pipelines of the pump shall be equipped with a gravity support system, and the pump can not accept the weight of the pipeline, otherwise, the pump will easily deform after a long time.


7、 Setting of return pipe: when the pressure filter pump is in normal working state, when the pump reaches a certain pressure and the flow is less than 30% of the rated flow, it is necessary to turn over the valve on the return pipe at this time to stop the flow diversion, so as to stabilize the pressure of the pressure filter feed, and ensure that the materials in the pump cavity adhere to the liquid state with certain moisture. Otherwise, the pressure in the filter press will drop, and the material in the pump cavity will be dried under the action of centripetal force due to pressure holding, which increases the friction between the material and the pump and shortens the service life of the pump.


8、 If it is an automatic control installation, it is suggested to install a safety valve on the outlet pipeline. When the pressure reaches a certain value, it will automatically open the return pipeline of the safety valve.