The cylinder liner seal ring of the mud pump is the key sealing element in the mud pump, which is mainly used to prevent the leakage of mud, water or other media and ensure the normal operation and efficiency of the pump. Butyl reclaimed rubber has good heat resistance, aging resistance and chemical corrosion resistance, which can replace high-priced raw rubber for the production of mud pump cylinder liner sealing rings, effectively reducing the cost of raw materials. When using the vulcanization formula of butyl reclaimed rubber slurry pump cylinder liner sealing ring, the following aspects can be considered.
1. The performance requirements of the sealing ring of the cylinder liner of the mud pump
The sealing ring of the cylinder liner of the mud pump requires the rubber to have good chemical resistance and be able to resist the chemicals in the mud, such as acids, alkalis, salts and oils; Choose materials that can maintain good performance over the operating temperature range of the slurry pump; Due to the presence of solid particles in the slurry, the sealing ring needs to have good wear resistance; Able to withstand the working pressure of the mud pump; As well as good elasticity and recovery performance, to ensure that the sealing ring can still maintain a good sealing effect under pressure changes; The right hardness to ensure that the seal provides good sealing performance without excessive wear due to being too hard.
Butyl reclaimed rubber can meet the basic performance requirements of the mud pump sealing ring, reasonable design of the vulcanization formula of the reclaimed rubber, and the selection of appropriate compounding agent can further improve the processing performance of the mud pump sealing ring and the physical properties of the finished product, and further reduce the cost of raw materials and processing costs on the premise of ensuring product quality
2. Key points of vulcanization formula design of cylinder liner seal ring of butyl reclaimed rubber slurry pump
When using butyl reclaimed rubber as the main raw material to produce the sealing ring of the mud pump cylinder liner, it is first necessary to choose butyl reclaimed rubber with stable physical, mechanical and chemical properties to ensure the stability of the rubber compound.
The sealing ring of butyl reclaimed rubber generally uses sulfur vulcanization system to ensure good cross-linking density and vulcanization efficiency; The use of resin vulcanized IIR reclaimed rubber vulcanized rubber has better heat resistance. Carbon black or white carbon black can be used as a reinforcing agent in the cylinder liner sealing ring of butyl reclaimed rubber slurry pump, such as high wear-resistant carbon black, to improve the wear resistance of reclaimed rubber vulcanized rubber; Use clay or calcium carbonate to fill in moderation. Use softeners, such as petroleum-based or ester oils, to improve processability and increase the flexibility of the finished product. Anti-ozone agents, anti-ultraviolet agents and antioxidants are used in an appropriate amount to improve the aging resistance of the cylinder liner sealing ring of butyl reclaimed rubber slurry pump.
3. Butyl reclaimed rubber production mud pump cylinder liner sealing ring reference formula
50 parts of butyl rubber, 50 parts of butyl reclaimed rubber, 5 parts of zinc oxide, 1 part of stearic acid, 60 parts of carbon black, 3.2 parts of engine oil, 0.5 parts of accelerator DM, 1 part of accelerator TMTD, 1.8 parts of sulfur; total: 172.5 shares.
When using butyl reclaimed rubber to produce mud pump cylinder liner seals, some special processing aids or special treatments may be used, such as surface coating, chemical treatment or adding anti-aging agents, etc., to improve its performance and reliability; We will continue to discuss relevant issues with you in the future.
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