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还有一种食品级橡胶软管泵，它的内衬的橡胶层需要达到了食品卫生的要求，同时也需要符合EHEDG或者其他卫生级的要求。还有三元乙丙橡胶软管泵，这种一般适用于绝大多数腐蚀性的化学物质和无机物，内衬橡胶层由三元乙丙橡胶构成，外层也是完整的三元乙丙橡胶。这样的软管具备很强的抗化学腐蚀的特性。以及CSM软管泵，它适用于特别腐蚀性的化学介质，如：强氧化溶剂。软管的内层是CSM，外层是天然橡胶。运行温度达到85℃/185°F。
There is also a food-grade rubber hose pump. Its rubber layer must meet food hygiene requirements, and it must also meet EHEDG or other sanitary requirements. There is also a EPDM hose pump, which is generally suitable for most corrosive chemicals and inorganic materials. The inner rubber layer is composed of EPDM rubber, and the outer layer is also a complete EPDM rubber. Such hoses have strong chemical resistance. And CSM hose pump, it is suitable for particularly corrosive chemical media, such as: strong oxidizing solvents. The inner layer of the hose is CSM and the outer layer is natural rubber. Operating temperature reaches 85 ° C / 185 ° F.
对于软管泵的内部结构，通常有挤压轮和滑靴两种设计方法。对于软管挤压，挤压轮的设计更为柔软，因为当软管被压缩时，挤压轮在软管表面滚动。滑靴的设计不仅压缩了软管，而且在软管表面产生滑动摩擦，使挤压后的管道产生很大的磨损。因此，在采用滑靴结构设计时，必须在泵壳内壁添加足够的润滑油，以帮助延长软管的使用寿命。滑靴的设计和在泵中添加润滑剂，在一定程度上增加了滑靴蠕动泵的复杂性和成本。
一根内壁光滑，强度可靠的特制橡胶软管安装在泵体内部，通过一对压辊沿着软管旋转挤压，这样的 旋转使得介质往一个方向输送而不会倒流，软管在输送介质之后，由被压扁软管的自身弹性和侧导轮的强制下，软管恢复原状，此时，软管内产生高真空将介质再次吸入管腔，然后介质在随之而来的压辊挤压下从软管内排出，如此周而复始，介质不断的被吸入和排出。目前产品使用温度为≤100℃。根据用户需要可以开发使用温度在120℃的软管泵软管产品。
Working principle of hose pump:
A special rubber hose with a smooth inner wall and reliable strength is installed inside the pump body. It is rotated and squeezed along the hose by a pair of pressure rollers. This rotation allows the medium to be transported in one direction without flowing back. After that, due to the elasticity of the flattened hose and the force of the side guide wheels, the hose returns to its original state. At this time, a high vacuum is generated in the hose to suck the medium into the lumen again, and then the medium is pressed by the subsequent pressure roller. It is discharged from the hose under the squeeze, and so on and on, the medium is continuously sucked in and discharged. The current product temperature is ≤100 ℃. According to user needs, we can develop hose pump hose products with a temperature of 120 ℃.
