The shaft end seal is located on the mixing shaft, between the mixing blade and the support bearing. We often hear users complain about the leakage of slurry from the shaft end seal of the concrete mixer, which seriously affects the project progress. In fact, the equipment is not selected correctly.

　　小编调查发现市场上很多厂家生产的混凝土搅拌机每生产10000m3左右混凝土就要大修一次，不仅维修成本大（一个轴端包括密封组件，造价约1000元及一个300元/只的轴承，双卧轴有四个轴端，大修一次约需5200元），且又因迷宫式结构的密封组件容易磨损经常积满水泥浆，至使维修拆装难度高，每次轴端大修至少三、四天，严重影响生产的进度和经济效益。

　　According to the investigation, many concrete mixers produced by many manufacturers in the market need to be overhauled every time they produce about 10000m3 of concrete, which not only has a high maintenance cost (one shaft end includes a sealing component, the cost is about 1000 yuan and a bearing is 300 yuan / piece; the double horizontal shaft has four shaft ends, and it costs about 5200 yuan to overhaul each time), but also because the sealing components of labyrinth structure are easy to wear, cement is often accumulated In order to make maintenance and disassembly difficult, each shaft end overhaul at least three or four days, seriously affecting the production schedule and economic benefits.
              

　　其实一直以来轴端密封都是国内外混凝土搅拌机设计与制造的共性难题，为尽快提高混凝土搅拌机的技术含量，改善搅拌机轴端密封问题，提高整机性能，增强市场竞争力，经过多方查找资料，着重研究了轴端密封的原理，提出了新的设计思路：

　　In fact, the shaft end seal has always been a common problem in the design and manufacture of concrete mixer at home and abroad. In order to improve the technical content of concrete mixer, improve the sealing problem of shaft end of mixer, improve the performance of the whole machine, and enhance the market competitiveness, the principle of shaft end seal is emphatically studied through searching data from various parties, and a new design idea is proposed

　　1.改变密封形式，采用浮动密封加油脂密封的形式，前后形成四道机械密封；

　　1. Change the seal form, adopt floating seal and grease seal, form four mechanical seals before and after;

　　2.改变密封圈与内浮封座的接触面形式；

　　2. Change the contact surface form between the seal ring and the inner floating seal seat;

　　3.密封圈采用特殊材质，提高密封效果，延长密封件使用寿命；

　　3. The seal ring is made of special material to improve the sealing effect and prolong the service life of the seal;

　　4.加油系统采用四个立泵芯分别向四个轴头供油，避免了使用分流阀的堵塞，减少维修和保养的工作量；

　　4. Four vertical pump cores are used in the refueling system to supply oil to the four shaft heads respectively, so as to avoid the blockage of diverter valve and reduce the workload of repair and maintenance;

　　5.轴端加装润滑油检测点，以检测润滑油脂是否真正到达轴头。

　　5. Install lubricating oil detection point at the shaft end to detect whether the lubricating grease really reaches the shaft head.

　　以上是关于混凝土搅拌机轴端密封的重要性，希望对大家有所帮助，如想了解更多内容欢迎关注我们的网站。

　　The above is about the importance of concrete mixer shaft end seal, hope to help you, if you want to know more, please pay attention to our website.