Design And Study On Hydraulic Molding Machine And Technology Of Edible Fungus

Dried edible fungi, especially black fungus and white fungus, were Huey and broke or went moldy very easily so that grade decline caused loss and waste when transported and circulated and stored; Bulky cubage increased railway and highway pressure of transportation: Inferior packaging decreased grade and price of commodity. We designed and studied hydraulic molding machine and technology of edible fungi according to these circumstances; At the same time, a small type of machine was provided for family in order to avoid various loss.First, the research finished the designs of hydraulic drive station and molding device of hydraulic molding machine of edible fungi and the whole machine was installed and tested. Tests proved that the hydraulic molding machine achieved request of design, the pressure of hydraulic drive station could be controlled very well, operation was very convenient, direction-change was agile, the machine could effectively control working parts of hydraulic molding device to finish compression keeping constant pressure and discharging successfully.Second, manufacture technology of black fungus case was confirmed by experiments : selected-wetness-measure-compression molding-self -air-dry-ackaging.Third, the conclusion was obtained through experiments of single factor that influenced the manufacture of black fungus case : moisture content of black fungus before compression should controlled between 18%-28%, working pressure of system should be controlled between 6MPa-14MPa, the time of keeping constant pressure should be over 2 minutes.Fourth, -with black fungus case elasticity reversion ratio in the direction of force and its bibulous ratio and integral degree after absorbing as test indexes that evaluated its compression effect and quality, the influence of factors on test indexes was studied by method of the quadratic orthogonal rotation combination design of three factors and five levels. The optimal technological parameters were obtained: moisture content of black fungus before compression: 20% , working pressure of system: 10MPa, the time of keeping constant pressure: 6 minutes.Finally, in order to verify the correctness of theoretic analysis, the experiment of black fungus case manufacture was done at the condition of the optimal technological parameters. Test result proved that shape of black fungus case was integral, surface was suck, structure was tight, elasticity reversion was small, speed of absorbing was very fast, bibulous ratio was quite high, black fungus was greatly integral and its colon odor and flavor were the same as black fungus that was not compressed .Graduate student: Ying WangMajor. Mechanized Engineering of AgricultureSupervisor Prof. Bolin Mi...