Asphalt transfer pump - Shenghui Pump recommends internal gear pump
2021-05-14 17:34:59
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Asphalt mixture refers to a general term for a liquid mixture composed of asphalt, SBS, rubber powder, talcum powder, modifiers and other additives. It is a complex solid and liquid mixture of multiple components. At present, in my country, liquid mixtures are not only widely used and highly valued in the waterproofing membrane industry, but also widely used in other industries.
As the asphalt mixture has both the high viscosity of asphalt and the characteristics of the solid and liquid multiphase mixed medium of the mixture, there are extremely high requirements on the pump's wear resistance and the reliability of the seal in the transportation link. Therefore, many domestic scientific research institutions, pump factories, and end users have never solved this transfer pump problem, forcing many industry units to use screw pumps, gear pumps, heavy oil pumps or Roots pumps and other alternatives due to their own structure. Neither the material of the over-current components can meet the requirements for conveying asphalt mixtures. After one to two months of normal operation, the over-current components cannot be used due to the excessive wear of the over-current components, and the sealing performance cannot meet the requirements. The new pump leaked or was damaged just after it was put into use.
In this case, Shenghui Pump, based on the concept of creating value for customers, sent technicians to conduct in-depth investigations and studies, combined with customer feedback; repeatedly communicated with well-known domestic waterproof manufacturers; summarized the defects of old products in technology and materials; Comprehensive optimization design, research and development of a special pump suitable for conveying liquid asphalt mixture.
1. The flow parts of the pump are made of high-performance wear-resistant materials, ductile iron, tungsten carbide, tool steel, etc., and a special heat treatment process is adopted to ensure that the surface hardness of the flow parts of the pump reaches HRC58 or higher, which not only ensures high resistance The grindability has the toughness of steel parts, which improves the comprehensive mechanical properties of the material, so as to realize the long life of the pump.
2. The seal adopts metal bellows seal, and the seal ring adopts cemented carbide to cemented carbide, which is corrosion-resistant and wear-resistant. The static seal is made of high temperature resistant materials, with a temperature resistance of up to 350, with reliable and stable performance.
3. The pump is designed with a sufficient area of heat preservation cavity. Avoid abnormal damage to the pump caused by insufficient heating of the solidified material in the pump when it is turned on again after the shutdown
4. This pump is easy to maintain, and the front cover can be removed for replacement without removing the pipeline when replacing the seal, realizing online cleaning or maintenance.
5. The gap between the rotor and the rotor, the rotor and the pump system components of the pump is guaranteed to be within a reasonable design parameter, so that the internal leakage of the pump is reduced during operation, and the sealing between the discharge cavity and the suction cavity is high.
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