In the application of pump equipment, due to the different material properties of fluoroplastic pumps and metal pumps, there are significant differences in their structural designs. These differences directly affect the applicable scenarios and operating performance of the equipment.
The overall framework of fluoroplastic pumps pays more attention to corrosion - resistance adaptability. The shells and force - bearing components mostly adopt a spliced design to avoid overall deformation caused by insufficient material rigidity. For metal pumps, high - strength integration is the core. The shells and main structures often use an integral forming process, and the overall force - bearing support is achieved through the rigidity of the material itself, reducing the sealing pressure caused by splicing gaps.
The impellers of fluoroplastic pumps adopt a low - speed adaptation design. The blade curvature is gentler, and a reinforcement layer is added at the connection part with the hub to make up for the weak impact resistance of fluoroplastic. The impellers of metal pumps can optimize the blade angle according to the high - speed requirements. The blades are thinner, and efficient fluid propulsion is achieved through the high - strength characteristics of metal, without the need for additional reinforcement structures.
The outside of the pump shaft of fluoroplastic pumps needs to be wrapped with a corrosion - resistant protective sleeve, and the matching gap with the bearing is larger to avoid jamming caused by the difference in material thermal expansion coefficients. The pump shaft of metal pumps can be directly and precisely matched with the bearing, and the gap design is more compact. Relying on the wear - resistant characteristics of metal, the shaking during operation is reduced, and the transmission efficiency is improved.
The sealing system of fluoroplastic pumps follows the principle of multi - layer isolation. In addition to conventional sealing parts, a corrosion - resistant gasket will be added outside the sealing surface. At the same time, a non - contact sealing auxiliary design is adopted to reduce the direct friction between the sealing parts and the pump body. The sealing system of metal pumps focuses more on high - pressure adaptation. The fitting degree between the sealing parts and the pump body is higher. A metal sealing ring is often used to enhance the sealing performance to meet the sealing requirements under high - pressure working conditions.
The pipeline connection of fluoroplastic pumps mostly adopts flange connection, and an elastic gasket will be added on the flange contact surface to balance the sealing deviation caused by the thermal deformation of the material. The connection methods of metal pumps are more flexible. In addition to flange connection, threaded connection or welded connection can also be adopted. Relying on the rigidity of metal and the welding stability, a more compact pipeline layout is realized.
To sum up, the structural differences between fluoroplastic pumps and metal pumps are all centered around material properties. The former takes corrosion resistance and adaptation to deformation as the design core, while the latter takes high strength and precise transmission as the optimization direction. Understanding these differences can provide key references for equipment selection and maintenance. In actual purchase, it is crucial to choose a professional and experienced pump company. As an enterprise deeply engaged in the pump industry, TEFFIKO has a profound understanding of the structural characteristics of fluoroplastic pumps and metal pumps. It can provide pump products that meet the structural design standards and have stable performance according to different working condition requirements. Whether it is the application scenario of fluoroplastic pumps that need corrosion resistance or the use requirement of metal pumps that have high requirements for strength and transmission efficiency, TEFFIKO can rely on professional technology and perfect services to provide customers with suitable solutions and help customers select high - quality pump equipment that meets their own needs.
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