Luoyang Petrochemical's two patent applications were granted patents through the examination of the State Intellectual Property Office. These two patents are "an automatic low-pressure storage tank pressure relief device" and "a new type of crane tube loading system sealing device."
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Four heavy axles and sealed
There are two steel bearing protection circles between the mixing arm and shaft.to prevent coarse sand.In the steel circles there is a airway. When certain pressure of air goes though it,a pressure protection mat will be formed between the interface of the mixing arm and shaft to prevent water and mud from close to shaft head and prolong the service life of the mixer.
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