The terms and conditions of storage of ointments are determined by technical documentation. Factory-made ointments are stored in a cool, protected from light place from six months to two years or more. The storage conditions of ointments should be strictly observed. Environmental factors, especially temperature changes and light, often adversely affect the quality of ointments.
Valve-type plunger homogenizers are designed for one-, two- and three-stage homogenization.
This process takes place in a special valve system, which is the center of the entire homogenization process. When passing through the smallest openings in the valve under high pressure and constant monitoring, the product finds itself in conditions of high turbulence, which is the most effective mechanism for dividing into particles. The degree of fragmentation depends on the hydraulic conditions in the valve slot area.
These conditions are mainly determined by the homogenization pressure, which determines the speed of movement of the ointment in the valve slot and its height, which determines the hydraulic radius of the flow. Valve-type homogenizers use multi-plunger high-pressure pumps with three, five and even seven plungers. When the plunger moves to the left, the ointment passes into the cylinder through the suction valve, and when the plunger moves to the right, it is pushed through the discharge valve into the chamber on which the pressure gauge is installed for pressure control.
Next, the ointment is sent through the channel to the homogenizing head, in which the valve rises, pre...