METHOD AND DEVICE FOR DISSOLVING A SOLID CONCENTRATE

摘要

The invention relates to a device for dissolving a concentrate in powder form, consisting of a liquid-feeding pipe (10) in which the first end is provided with a means for coupling said pipe to a pressurised liquid source and in which the second end (11) is coupled to a junction point, an extraction pipe (30) in which the first end is coupled to the junction point and which is provided with a valve (31), and a transfer pipe (40) in which the first end is coupled with the junction point and in which the second end is provided with a means for coupling said pipe to a container (50) containing the concentrate to be dissolved. According to the invention, the junction point is located in the throttling of a Venturi tube (20), the feeding pipe (10) being connected to the convergent chamber (21), the extraction pipe (30) to the divergent chamber (22) and the transfer pipe (40) to the throttling (23) of the Venturi tube (20). Thus, if the valve (31) is closed when coupling the pressurised liquid feeding pipe (10), the liquid enters the Venturi tube (20) via the convergence chamber (21) and, since the liquid cannot come back out via the divergence chamber (22) because the valve is closed, the liquid comes back out via the vacuum connection (23). The liquid then passes through the transfer pipe (40) and enters the container (50). When the valve (31) is open, the liquid from the source enters the convergence chamber, passes through the throttling and comes back out via the divergence chamber, causing a negative pressure in the vacuum connection. The saturated liquid held in the container is then sucked up and driven by the liquid passing through the Venturi. When the liquid is emptied from the container the solid concentrate remains. The valve is closed and the cycle starts over.