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水泥自動攪拌車為什么會出現粘灌現象

來源:http://www.qzt12580.com/ 日期:2022-10-03 發布人:zhongke
水泥自動攪拌車為什么會出現粘灌現象?經過實踐和分析,我們認為水泥自動攪拌車粘罐原因可以分為兩大類:即設計不合理和使用不當,主要有以下幾種形式:
Why does the cement automatic mixer stick? Through practice and analysis, we believe that the causes of tank sticking of automatic cement mixer can be divided into two categories: unreasonable design and improper use, mainly in the following forms:
(1)卸料殘余率和葉片設計的不合理。
(1) Discharge residual rate and blade design are unreasonable.
從攪拌筒的內部結構看,水泥自動攪拌車的拌筒是依靠回轉的筒體帶動其中的兩條螺旋葉片所產生的螺旋運動,使混凝土獲得既有“切向”又有“軸向”的復合運動,從而使攪拌筒具有攪拌和卸料的功能,因此形成這一螺旋運動的有關因素,諸如螺旋葉片的曲線參數,攪拌筒的幾何形狀和尺寸等對攪拌車的卸料殘余率都有重要影響。
From the perspective of the internal structure of the mixing drum, the mixing drum of the cement automatic mixer is driven by the rotating cylinder to produce the spiral movement of the two spiral blades, so that the concrete can obtain the composite movement of both "tangential" and "axial", so that the mixing drum has the functions of mixing and unloading. Therefore, the factors related to the formation of this spiral movement, such as the curve parameters of the spiral blades, The geometric shape and size of the mixing drum have an important influence on the discharge residual rate of the mixer truck.
而過大的卸料殘余率意味著攪拌車在卸料結束后在水泥自動攪拌車里會有更多的余料,因而更有可能因日積月累在攪拌罐中粘料。目前大多數廠家采用的是等角對數螺旋線葉片,在卸料殘余率上還有很大的改進空間。
However, excessive discharge residual rate means that there will be more residual materials in the cement automatic mixer truck after the completion of discharge, which is more likely to stick materials in the mixing tank due to accumulation over time. At present, most manufacturers use equiangular logarithmic spiral blades, and there is still much room for improvement in the discharge residual rate.
(2)水泥自動攪拌車工作環境溫度過高。
(2) The working environment temperature of automatic cement mixer is too high.
夏季在南方地區白天中午前后,環境溫度經常超過30℃,在這種情況下運輸混凝土,將會由于混凝土坍落度損失快以及罐體周圍溫度相對更高,因而混凝土更容易粘罐。
In summer, around noon in the day in the south, the ambient temperature often exceeds 30 ℃. When transporting concrete in this case, the concrete will be easier to stick to the tank because of the rapid loss of concrete slump and the higher temperature around the tank relative to the center.
水泥自動攪拌車
(3)運輸距離過長。
(3) The transportation distance is too long.
隨著城市化的進程及城市規劃的要求,越來越多的攪拌站被要求遷到郊區和郊縣,與市區的距離越來越遠,而由于混凝土這一產品的特殊性,任何預拌混凝土在未添加緩凝劑的情況下,都在1h左右進入初凝狀態。
With the process of urbanization and the requirements of urban planning, more and more mixing plants are required to be moved to the suburbs and suburban counties, which are more and more far away from the urban area. Due to the particularity of concrete, any ready mixed concrete will enter the initial setting state in about 1h without adding retarder.
如果這時才進行混凝土澆注施工,不但影響混凝土的工程質量,而且因混凝土失去流動性,易在攪拌筒及葉片上凝結,導致粘罐,嚴重時甚至整車混凝土粘在罐內及造成液壓設備的損壞,所以水泥自動攪拌車運送預拌混凝土有其時間控制的輸送半徑,一般應控制在1h以內。
If the concrete pouring construction is carried out at this time, it will not only affect the quality of the concrete project, but also because the concrete loses its fluidity, it is easy to condense on the mixing drum and blades, which will lead to tank sticking, even if the whole vehicle concrete sticks in the tank and causes damage to the hydraulic equipment. Therefore, the automatic cement mixer has its time controlled delivery radius for transporting ready mixed concrete, which should be controlled within 1h generally.
此外水泥自動攪拌車駕駛員在攪拌車卸料完畢后未及時清理清洗攪拌罐內及葉片上殘留的混凝土,在攪拌車回站過程中不轉動攪拌罐,殘留的混凝土干燥后凝固在拌筒及葉片上,以后就會越聚越多,形成粘罐現象。更多相關內容就來我們網站http://www.qzt12580.com咨詢吧!
In addition, the driver of the automatic cement mixer failed to clean and clean the residual concrete in the mixing tank and on the blades in time after the unloading of the mixer truck, did not rotate the mixing tank when the mixer truck returned to the station, and the residual concrete dried and solidified on the mixing tank and blades, which will accumulate more and more in the future, forming the phenomenon of tank sticking. More relevant content will come to our website http://www.qzt12580.com Consult!

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