Stepless adjustment of pump truck delivery capacity of small-scale concrete mixer: stepless adjustment of pumping speed is realized, and discharge gate of hopper is installed? Small pump truck price can be in accordance with the specific situation of construction, 33m series concrete mixing machine! It can change the pumping displacement and satisfy different working conditions.

保养办法：1，小型混凝土搅拌一体机保养办法应遵照产品阐明书中对应地要求和办法，对运用前，后泵车相关项目开展查看。直接吊水法1)查看切开环和眼睛板之间的摩擦损坏状况，这是决议直接吊水法清洗胜败的要害。若切开环和眼睛板摩擦损坏不严峻，切开环和眼睛板时间周期＜0.1mm，且它们之间无超越1mm的沟槽划痕，可用直接吊水法。

Maintenance methods: 1. The maintenance method of small-scale concrete mixer should follow the corresponding requirements and methods in the product specification, and check the relevant items of pump truck before and after use. Direct hanging water method 1) check the friction damage condition between the incision ring and the eye plate, which is the key to the success or failure of the direct hanging water method. If the friction damage between the incision ring and the eye plate is not severe, and the time period of the incision ring and eye plate is less than 0.1 mm, and there is no groove scratch beyond 1 mm between them, the direct water lifting method can be used.

           

2)在泵送完砼后再泵送0。15～0。25m3水灰比为1∶1。5或1∶2的砂浆，然后在分配阀中加满水，发动泵送，将砼泵送到浇注位置，直运送管输出端流出清水停止。倘若管道较短，清洗作用较好，则清洗过程到此结束。

2) After pumping concrete, pump 0. 15～0。 The water cement ratio of 25m3 is 1 ∶ 1. 5 or 1:2 mortar, and then fill the distribution valve with water, start pumping, and pump the concrete to the pouring position until clear water flows out of the delivery pipe. If the pipeline is short and the cleaning effect is good, the cleaning process is over.

3)封闭上料斗卸料门，向料斗中加水，当水加砼缸直径2/3高度时，将柱状体头部朝分配阀方向装入砼缸，用1根长约1m，直径约30mm的木制橇棒将柱状体抵住，继续加水拌和轴中心线。撤出撬棒，迅速发动泵送，继续加水，直柱状体从运送管输出端泵出。加活塞法的长处是管道清洗较洁净，水源的流速能够偏低，能够暂停，一起环比减少拆出料口和弯管的费事。

3) Close the discharge door of the upper hopper and add water to the hopper. When the water is added to the height of 2 / 3 of the diameter of the concrete cylinder, the head of the column is loaded into the concrete cylinder in the direction of the distribution valve, and the cylinder is butted with a wooden sled bar about 1m long and 30mm in diameter, and water is added to the center line of the mixing shaft. Remove the crowbar, start pumping quickly, and continue to add water until the cylinder is pumped out of the delivery tube. The advantages of the piston method are that the pipeline cleaning is relatively clean, the water flow rate can be low, can be suspended, and the cost of removing the outlet and elbow is reduced.

4)混凝土搅拌一体机价格封闭在低压泵送状态下的泵送方量，混凝土搅拌一体机胶管价格而实践施工中不足以具备上文讲的的条件。它取决于如下要素。（1）泵送系统恒效率点：现如今国内外企业制作的混凝土泵，其泵送安排均选用恒动力等级系统。

4) The price of the concrete mixing machine is closed in the pumping volume under the low-pressure pumping state, and the rubber tube price of the concrete mixing machine is not enough to meet the conditions mentioned above in the practical construction. It depends on the following elements. (1) Constant efficiency point of pumping system: at present, the pumping arrangement of concrete pump made by domestic and foreign enterprises adopts constant power grade system.

当泵送压力高时泵送方量低，泵送压力低时，泵送方量增加到动力等级安稳，有利于动力和主油泵的合理匹配，从泵送性能曲线可看出，基本恒功率等级曲线MPa左右。

When the pumping pressure is high, the pumping volume is low; when the pumping pressure is low, the pumping volume increases to the power level, which is conducive to the reasonable matching of power and main oil pump. From the pumping performance curve, it can be seen that the basic constant power rating curve is about MPa.

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